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Objectives: NHS England publishes monthly national and regional estimated dementia diagnosis rates (DDR) to assess the healthcare system's effectiveness in identifying dementia cases. Previous research indicates that sociodemographic factors, such as ethnic minority status, socioeconomic deprivation, and rurality, influence both healthcare quality and dementia risk. This study aimed to examine the association between these sociodemographic factors and DDR, and to estimate an ethnicity-adjusted DDR using available ethnic group data., Method: We analysed NHS Digital Primary Care Dementia Data electronic health records for July 2023. We used a linear regression model to determine the association between DDR and ethnicity, deprivation, and rurality factors using local authority region level data. We also adjusted the DDR at the level of sub-integrated care boards based on previously published odds ratios of dementia diagnosis by ethnic group., Results: Regression modelling revealed that areas with higher proportions of minority ethnic groups and greater rurality had lower DDRs. Conversely, higher levels of deprivation were linked to higher DDRs. After adjusting for different odds ratios for dementia in minority ethnic groups, the national DDR decreased by 1%, with regional diagnosis rates dropping by up to 5.4%., Conclusion: Higher regional proportional ethnic minority population and greater rurality were associated with a lower DDR which might reflect poorer access to diagnostic services. Higher deprivation levels were associated with a higher DDR which might reflect higher rates of dementia in more deprived populations. We discuss measures to improve the accuracy and utility of the DDR, with a specific focus on ethnicity.

Objectives: Endogenous retroelements (EREs) stimulate type 1 interferon (IFN-I) production but have not been explored as potential interferonogenic triggers in Rheumatoid Arthritis (RA). We investigated ERE expression in early RA (eRA), a period where IFN-I is increased., Methods: ERE expression (LTR5, LINE1, SINE) in disease modifying treatment naïve eRA whole blood and bulk synovial tissue was examined by RT-PCR and Nanostring alongside IFN-α activity. Circulating lymphocyte subsets, including B cell subsets, from eRA patients and early psoriatic arthritis (ePsA), were flow cytometrically sorted and similarly examined. Existing established RA and osteoarthritis (OA) synovial single-cell sequencing data was re-interrogated to identify repeat elements, and associations explored., Results: There was significant co-expression of all ERE classes and IFNA in eRA synovial tissue (n=22, p<0.0001) and significant positive associations between whole blood LINE1 expression (n=56) and circulating IFN-α protein (p=0.018) and anti-CCP titres (p<0.0001). ERE expression was highest in circulating eRA B-cells, particularly naïve B-cells compared with ePsA, with possible ERE regulation by SAMDH1 implicated and associations with IFNA again observed. Finally, in established RA synovium, LTRs, particularly ERVK, were most increased in RA compared with OA where, for all synovial subsets (monocytes, B-cells, T-cells and fibroblasts), ERE expression associated with increased IFN-I signalling (p<0.001)., Conclusions: Peripheral blood and synovial ERE expression is examined for the first time in eRA highlighting both a potential causal relationship between ERE and IFN-I production and an intriguing association with anti-CCP autoantibodies. This suggests EREs may contribute to RA pathophysiology with implications for future novel therapeutic strategies., (This article is protected by copyright. All rights reserved.)

Current rheumatoid arthritis (RA) treatments do not restore immune tolerance. Investigating dendritic cell (DC) populations in human synovial tissue (ST) may reveal pathways to reinstate tolerance in RA. Using single-cell and spatial transcriptomics of ST biopsies, as well as co-culture systems, we identified condition- and niche-specific DC clusters with distinct functions. Healthy tissue contained tolerogenic AXL + DC2s in the lining niche. In active RA, the hyperplasic lining niche was populated with inflammatory DC3s that activated CCL5-positive effector memory T cells, promoting synovitis. Lymphoid niches that emerged in the sublining layer were enriched with CCR7 + DC2s, which interacted with naive T cells, potentially driving the local expansion of new effector T cells. Remission saw the resolution of these pathogenic niches but lacked recovery of tolerogenic DC2s and exhibited activation of blood precursors of ST-DC3 clusters prior to flare-ups. Targeting pathogenic DC3s or restoring tolerogenic DC2s may help restore immune homeostasis in RA joints., Competing Interests: Declaration of interests The authors declare no competing interests., (Copyright © 2024 The Author(s). Published by Elsevier Inc. All rights reserved.)

It has been suggested that the diagnostic landscape of Alzheimer disease (AD) is undergoing a profound transformation, marked by a shift toward a biomarker-based approach, as proposed by the Revised Criteria for Diagnosis and Staging of Alzheimer's Disease. These criteria advocate for diagnosing AD solely on biomarkers, without requiring clinical symptoms. This article explores the drivers behind this transition, primarily influenced by the Food and Drug Administration's approval of amyloid-lowering treatments. We evaluate the proposed criteria, which allow for an AD diagnosis based on amyloid "A" or phosphorylated tau "T1" positivity through surrogate amyloid PET imaging, CSF, or plasma biomarkers, and consider the arguments for and against their use. The merits of the new criteria include a clearer definition of AD, which is currently used interchangeably to refer to both the presence of neuropathology and the clinical syndrome. We argue that a purely biological definition risks a category error and emphasize the need for longitudinal data to establish the lifetime risk of dementia in amyloid-positive and tau-positive individuals. We also caution against limiting the scope of biomarker-based AD diagnosis to amyloid and tau alone. In conclusion, we recommend that the criteria remain within the research domain for the present while advocating for the considered adoption of plasma biomarkers in clinical practice.

Brain health means optimal physiological brain function across the normal life-course. It encompasses not only healthy brain aging but also brain diseases, their diagnosis and treatment. In all these areas, molecular science has advanced our understanding. This multi-disciplinary review combines viewpoints from laboratory science, clinical medicine and the bioscience industry. First, we review the advances that molecular science has brought to brain health in the past twenty years. These include therapeutic antibodies for CNS diseases (multiple sclerosis, Alzheimer disease) and the dramatic introduction of RNA-targeted therapeutics. Second, we highlight areas where greater molecular understanding is needed. Salient examples are the relation of brain structure to cognitive symptoms, and molecular biomarkers for diagnosis, target discovery and testing of interventions. Finally, we speculate on aspects of molecular science that are likely to advance brain health in the next twenty years. These include: cell senescence and chronobiology; gene editing (notably, CRISPR) and RNA targeting (RNA interference, miRNA manipulation); brain-immune interactions; novel drug targets (AQP4, HIF1, Toll-like receptors); and novel chemistry to make new drugs (molecular machines, quantum molecular modelling and "click" chemistry). Early testing of the relationships between molecular pathways and clinical manifestations will drive much-needed breakthroughs in neurology and psychiatry., Competing Interests: Hainsworth leads MRC-Dementias Platform UK Vascular Experimental Medicine group and was Chief Investigator on the PASTIS trial. He has received honoraria from Eli Lilly and NIA and serves as a scientific consultant for Aribio Inc. Blackburn is a Non-Executive Board Member of Umecrine Cognition AB. Bradshaw holds a role within ISTAART Immunity and Neurodegeneration PIA and is a Founder of IMAD Therapeutics. Isaacs was Principal Investigator on the PASTIS trial. He has been a PI on clinical trials funded by Roche, Merck and Lupin Pharmaceuticals and has received funds from Nestle, Biogen and Roche. All other authors report no conflicts of Interest related to this manuscript. All the claims stated here come from the various authors’ personal opinions and reflections. The text in this article is in no sense official or legally binding., (© 2024 The Authors. Published by Elsevier B.V.)

Objectives: Extracellular vesicles (EVs) are abundant in body fluids, contributing to intercellular signalling by transferring cargo that includes microRNAs (miRs)-themselves implicated in pathobiology. For the first time we evaluated the potential of EV miRs to contribute diagnostic information in early RA, predict methotrexate (MTX) efficacy or shed light on the drug's mechanism of action., Methods: Seven hundred and ninety-eight miRs isolated from serum-derived EVs of 46 patients with untreated RA, 23 with untreated polymyalgia rheumatica (PMR; inflammatory disease control group) and 12 in whom significant inflammatory disease had been excluded (non-inflammatory controls; NICs) were profiled (NanoString); the same measurements were made for RA patients after 6 months' MTX treatment. Analyses took multiple testing into account., Results: Twenty-eight EV miRs were robustly differentially expressed between early RA (but not PMR) patients and NICs after correction for age and sex, suggesting discriminatory value. Cross-validated partial least squares-discriminant analysis also indicated the predictive potential of a distinct baseline EV miR signature with respect to MTX-induced remission at 6 months. The change in expression of 13 miRs over the course of MTX treatment differed significantly between responders and non-responders, and four of those exhibiting increased relative abundance amongst responders have known roles in regulating the pathogenic potential of synovial fibroblasts, namely miR-212-3p, miR-338-5p, miR-410-3p and miR-537., Conclusion: Our data highlight the potential of serum EV miRs as diagnostic and therapeutic biomarkers, highlighting a novel potential mechanism by which MTX may exert its therapeutic effect in early RA that warrants further investigation., (© The Author(s) 2023. Published by Oxford University Press on behalf of the British Society for Rheumatology.)

Background: Checkpoint inhibitors (CPIs) are widely used in cancer treatment, with transformative impacts on survival. They nonetheless carry a significant risk of toxicity in the form of immune-related adverse events (IrAEs), which may be sustained and life-altering. IrAEs may require high-dose and/or prolonged steroid use and represent a significant healthcare burden. They mimic immune-mediated inflammatory diseases (IMIDs) but understanding of their pathogenesis is limited. The MEDALLION project aims to determine targetable mechanisms of immune dysregulation in IrAE development, employing an immune monitoring approach to determine changes in circulating and tissue resident cells of CPI recipients who do/do not develop them and assessing the contribution of the microbiome in parallel., Methods: MEDALLION is a non-randomised longitudinal cohort study aiming to recruit 66 cancer patient recipients of anti-PD1/PD-L1, anti-CTLA-4 or combination therapy. Eligible participants include those with malignant melanoma in the adjuvant or metastatic setting, mesothelioma and non-small cell lung carcinoma (NSCLC) treated in the metastatic setting. Comprehensive clinical evaluation is carried out alongside blood, skin swab and stool sampling at the time of CPI initiation (baseline) and during subsequent routine hospital visits on 6 occasions over a 10-month follow-up period. It is conservatively anticipated that one third of enrolled patients will experience a "significant IrAE" (SirAE), defined according to pre-determined criteria specific to the affected tissue/organ system. Those developing such toxicity may optionally undergo a biopsy of affected tissue where appropriate, otherwise being managed according to standard of care. Peripheral blood mononuclear cells will be analysed using multi-parameter flow cytometry to investigate immune subsets, their activation status and cytokine profiles. Stool samples and skin swabs will undergo DNA extraction for 16 S ribosomal RNA (rRNA) sequencing and internal transcribed spacer (ITS) gene sequencing to determine bacterial and fungal microbiome diversity, respectively, including species associated with toxicity. Stored tissue biopsies will be available for in situ and single-cell transcriptomic evaluation. Analysis will focus on the identification of biological predictors and precursors of SirAEs., Discussion: The pathogenesis of IrAEs will be assessed through the MEDALLION cohort, with the potential to develop tools for their prediction and/or strategies for targeted prevention or treatment., Trial Registration: The study was registered on 18/09/2023 in the ISRCTN registry (43,419,676)., (© 2024. The Author(s).)

Background: Phase three trials of the monoclonal antibodies lecanemab and donanemab, which target brain amyloid, have reported statistically significant differences in clinical end-points in early Alzheimer's disease. These drugs are already in use in some countries and are going through the regulatory approval process for use in the UK. Concerns have been raised about the ability of healthcare systems, including those in the UK, to deliver these treatments, considering the resources required for their administration and monitoring., Aims: To estimate the scale of real-world demand for monoclonal antibodies for Alzheimer's disease in the UK., Method: We used anonymised patient record databases from two National Health Service trusts for the year 2019 to collect clinical, demographic, cognitive and neuroimaging data for these cohorts. Eligibility for treatment was assessed using the inclusion criteria from the clinical trials of donanemab and lecanemab, with consideration given to diagnosis, cognitive performance, cerebrovascular disease and willingness to receive treatment., Results: We examined the records of 82 386 people referred to services covering around 2.2 million people. After applying the trial criteria, we estimate that a maximum of 906 people per year would start treatment with monoclonal antibodies in the two services, equating to 30 200 people if extrapolated nationally., Conclusions: Monoclonal antibody treatments for Alzheimer's disease are likely to present a significant challenge for healthcare services to deliver in terms of the neuroimaging and treatment delivery. The data provided here allows health services to understand the potential demand and plan accordingly.

Efficacy to biologics in rheumatoid arthritis (RA) patients is variable and is likely influenced by each patient's circulating drug levels. Using modelling and simulation, the aim of this study was to investigate whether adalimumab and etanercept biosimilar dosing intervals can be altered to achieve therapeutic drug levels at a faster/similar time compared to the recommended interval. RA patients starting subcutaneous Amgevita or Benepali (adalimumab and etanercept biosimilars, respectively) were recruited and underwent sparse serum sampling for drug concentrations. Drug levels were measured using commercially available kits. Pharmacokinetic data were analysed using a population approach (popPK) and potential covariates were investigated in models. Models were compared using goodness-of-fit criteria. Final models were selected and used to simulate alternative dosing intervals. Ten RA patients starting the adalimumab biosimilar and six patients starting the etanercept biosimilar were recruited. One-compartment PK models were used to describe the popPK models for both drugs; no significant covariates were found. Typical individual parameter estimates were used to simulate altered dosing intervals for both drugs. A simulation of dosing the etanercept biosimilar at a lower rate of every 10 days reached steady-state concentrations earlier than the usual dosing rate of every 7 days. Simulations of altered dosing intervals could form the basis for future personalised dosing studies, potentially saving costs whilst increasing efficacy.

Objective: International trials can be challenging to operationalise due to incompatibilities between country-specific policies and infrastructures. The aim of this systematic review was to identify the operational complexities of conducting international trials and identify potential solutions for overcoming them., Design: Systematic review., Data Sources: Medline, Embase and Health Management Information Consortium were searched from 2006 to 30 January 2023., Eligibility Criteria: All studies reporting operational challenges (eg, site selection, trial management, intervention management, data management) of conducting international trials were included., Data Extraction and Synthesis: Search results were independently screened by at least two reviewers and data were extracted into a proforma., Results: 38 studies (35 RCTs, 2 reports and 1 qualitative study) fulfilled the inclusion criteria. The median sample size was 1202 (IQR 332-4056) and median number of sites was 40 (IQR 13-78). 88.6% of studies had an academic sponsor and 80% were funded through government sources. Operational complexities were particularly reported during trial set-up due to lack of harmonisation in regulatory approvals and in relation to sponsorship structure, with associated budgetary impacts. Additional challenges included site selection, staff training, lengthy contract negotiations, site monitoring, communication, trial oversight, recruitment, data management, drug procurement and distribution, pharmacy involvement and biospecimen processing and transport., Conclusions: International collaborative trials are valuable in cases where recruitment may be difficult, diversifying participation and applicability. However, multiple operational and regulatory challenges are encountered when implementing a trial in multiple countries. Careful planning and communication between trials units and investigators, with an emphasis on establishing adequately resourced cross-border sponsorship structures and regulatory approvals, may help to overcome these barriers and realise the benefits of the approach. OPEN SCIENCE FRAMEWORK REGISTRATION NUMBER: osf-registrations-yvtjb-v1., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2024. Re-use permitted under CC BY. Published by BMJ.)

Objectives: Biologic DMARDs (bDMARDs) are widely used in patients with RA, but response to bDMARDs is heterogeneous. The objective of this work was to identify pretreatment proteomic biomarkers associated with RA clinical outcome measures in patients starting bDMARDs., Methods: Sequential window acquisition of all theoretical fragment ion spectra mass spectrometry (SWATH-MS) was used to generate spectral maps of sera from patients with RA before and after 3 months of treatment with the bDMARD etanercept. Protein levels were regressed against RA clinical outcome measures, i.e. 28-joint DAS (DAS28) and its subcomponents and DAS28 <2.6 (i.e. remission). The proteins with the strongest evidence for association were analysed in an independent, replication dataset. Finally, subnetwork analysis was carried out using the Disease Module Detection algorithm and biological plausibility of identified proteins was assessed by enrichment analysis., Results: A total of 180 patients with RA were included in the discovery dataset and 58 in the validation dataset from a UK-based prospective multicentre study. Ten individual proteins were found to be significantly associated with RA clinical outcome measures. The association of T-complex protein 1 subunit η with DAS28 remission was replicated in an independent cohort. Subnetwork analysis of the 10 proteins from the regression analysis identified the ontological theme, with the strongest associations being with acute phase and acute inflammatory responses., Conclusion: This longitudinal study of 180 patients with RA commencing etanercept has identified several putative protein biomarkers of treatment response to this drug, one of which was replicated in an independent cohort., (© The Author(s) 2023. Published by Oxford University Press on behalf of the British Society for Rheumatology.)

The Advances in Targeted Therapies meets annually, convening experts in the field of rheumatology to both provide scientific updates and identify existing scientific gaps within the field. To review the major unmet scientific needs in rheumatology. The 23rd annual Advances in Targeted Therapies meeting convened with more than 100 international basic scientists and clinical researchers in rheumatology, immunology, infectious diseases, epidemiology, molecular biology and other specialties relating to all aspects of immune-mediated inflammatory diseases. We held breakout sessions in five rheumatological disease-specific groups including: rheumatoid arthritis (RA), psoriatic arthritis (PsA), axial spondyloarthritis (axSpa), systemic lupus erythematosus (SLE), systemic sclerosis (SSc) and vasculitis, and osteoarthritis (OA). In each group, experts were asked to identify and prioritise current unmet needs in clinical and translational research. An overarching theme across all disease states is the continued need for clinical trial design innovation with regard to therapeutics, endpoint and disease endotypes. Within RA, unmet needs comprise molecular classification of disease pathogenesis and activity, pre-/early RA strategies, more refined pain profiling and innovative trials designs to deliver on precision medicine. Continued scientific questions within PsA include evaluating the genetic, immunophenotypic, clinical signatures that predict development of PsA in patients with psoriasis, and the evaluation of combination therapies for difficult-to-treat disease. For axSpA, there continues to be the need to understand the role of interleukin-23 (IL-23) in pathogenesis and the genetic relationship of the IL-23-receptor polymorphism with other related systemic inflammatory diseases (eg, inflammatory bowel disease). A major unmet need in the OA field remains the need to develop the ability to reliably phenotype and stratify patients for inclusion in clinical trials. SLE experts identified a number of unmet needs within clinical trial design including the need for allowing endpoints that reflect pharmacodynamic/functional outcomes (eg, inhibition of type I interferon pathway activation; changes in urine biomarkers). Lastly, within SSc and vasculitis, there is a lack of biomarkers that predict response or disease progression, and that allow patients to be stratified for therapies. There remains a strong need to innovate clinical trial design, to identify systemic and tissue-level biomarkers that predict progression or response to therapy, endotype disease, and to continue developing therapies and therapeutic strategies for those with treatment-refractory disease. This document, based on expert consensus, should provide a roadmap for prioritising scientific endeavour in the field of rheumatology., Competing Interests: Competing interests: KLW has received research grants and/or consulting honoraria from Janssen Pfizer, AbbVie, Union Chimique Belge (UCB), Eli Lilly & Company, Galapagos, GlaxoSmithKline (GSK), Roche, Gilead, BMS, Regeneron, Sanofi, AstraZeneca, Novartis; JDI has received grants and/or consulting honoraria from Janssen, GSK, Pfizer, Abbvie, BMS, Gilead, Roche, Eli Lilly, Anaptys Bio, Sonoma; PM has received grants and/or consulting honoraria from AbbVie, Acelyrin, Aclaris, Amgen, Boehringer Ingelheim, BMS, Eli Lilly, Galapagos, Gilead, GlaxoSmithKline, Inmagene, Janssen, Moonlake, Novartis, Pfizer, Sun Pharma, Takeda, UCB, Ventyx; JEG has received grants and/or consulting honoraria from Abbvie, BMS, Gilead, Galapagos, Janssen, Lilly, MSD, Novartis, Pfizer, Roche Chugai, Sanofi; MHB has received grants and/or consulting honoraria (all paid to host institution) from Abbvie, Boehringer-Ingelheim, Galapagos, Gilead and Pfizer Ltd. MKC has received grants or consulting honoraria from AMPEL BioSolutions, Astra Zeneca, BMS, Gilead Sciences, and GSK; JK has received research grants (paid to UMass Chan Medical School) from Aker BioMarine AS; Galapagos NV; and Novartis Pharmaceuticals Corp.; and consulting honoraria from Alvotech Swiss AG; Boehringer Ingelheim GmbH; Bristol Myers Squibb Co.; Fresenius Kabi; Inmagene LLC; Kolon TissueGene, Inc.; Novartis Pharmaceuticals Corp.; Organon LLC; Pfizer Inc.; Samsung Bioepis; Sandoz Inc.; Scipher Medicine; Teijin Pharma Ltd.; Viatris Inc.; and UCB Inc; LC serves on a Data Safety Monitoring Board for Kezar Life Sciences and has research grants from Argenyx; AK has received grants and/or consulting honoraria from Amgen, Eli Lilly, Galapagos, Gilead, Janssen, Novartis, UCB and Pfizer; XB has received grants and/or consulting honoraria from AbbVie, BMS, MSD, Celgene, Chugai, Merck, Novartis, Pfizer, Sandoz, and UCB; RFvV has received grants and/or consulting honoraria; CO has no competing interests; HPK has received grants and/or consulting honoraria from SS has received grants and/or consulting honoraria from Amgen, AbbVie, AstraZeneca, Boehringer-Ingelheim, BMS, Eli Lilly, GSK, Janssen and UCB; MK has received grants and/or consulting honoraria (all paid to institution) from UCB, Pfizer, Novartis, Galapagos, CHDR and Jansen; DA has received grants and/or consulting honoraria from Abbvie, Amgen, Galapagos, Lilly, Janssen, Merck, Novartis, Pfizer, Sandoz, and Sanofi; IBM has received grants and/or consulting honoraria from AbbVie, Amgen, BMS, Causeway Therapeutics, Cabaletta, Eli Lilly, Gilead, Janssen, Novartis, Pfizer, Sanofi, UCB, Evelo, Compugen, AstraZeneca, Moonlake, and serves as a NHS GGC board member, Evelo Board of Directors, Versus Arthritis Trustee Status; TWJH has no competing interests to disclose; REV has received grants and/or consulting honoraria from AbbVie, Amgen, Boehringer Ingelheim, BMS, Janssen-Cilag, GSK, Hexal, Neutrolis, Novartis, and Pfizer; EMG: serves as an associate editor at the New England Journal of Medicine and receives royalties from Elsevier; FCB has no competing interests to disclose; JSS has received research grants and/or consulting honoraria from AbbVie, Amgen, AstraZeneca, Astro, Bristol-Myers Squibb, Chugai, Janssen, Lilly, Merck Sharp & Dohme, Novartis-Sandoz, Pfizer, R-Pharma, Roche, Samsung, and UCB serves as the editor of Annals of Rheumatic Diseases but was not involved in the handling or review of this manuscript., (© Author(s) (or their employer(s)) 2024. No commercial re-use. See rights and permissions. Published by BMJ.)

Background: Individuals with serum antibodies to citrullinated protein antigens (ACPA), rheumatoid factor, and symptoms, such as inflammatory joint pain, are at high risk of developing rheumatoid arthritis. In the arthritis prevention in the pre-clinical phase of rheumatoid arthritis with abatacept (APIPPRA) trial, we aimed to evaluate the feasibility, efficacy, and acceptability of treating high risk individuals with the T-cell co-stimulation modulator abatacept., Methods: The APIPPRA study was a randomised, double-blind, multicentre, parallel, placebo-controlled, phase 2b clinical trial done in 28 hospital-based early arthritis clinics in the UK and three in the Netherlands. Participants (aged ≥18 years) at risk of rheumatoid arthritis positive for ACPA and rheumatoid factor with inflammatory joint pain were recruited. Exclusion criteria included previous episodes of clinical synovitis and previous use of corticosteroids or disease-modifying antirheumatic drugs. Participants were randomly assigned (1:1) using a computer-generated permuted block randomisation (block sizes of 2 and 4) stratified by sex, smoking, and country, to 125 mg abatacept subcutaneous injections weekly or placebo for 12 months, and then followed up for 12 months. Masking was achieved by providing four kits (identical in appearance and packaging) with pre-filled syringes with coded labels of abatacept or placebo every 3 months. The primary endpoint was the time to development of clinical synovitis in three or more joints or rheumatoid arthritis according to American College of Rheumatology and European Alliance of Associations for Rheumatology 2010 criteria, whichever was met first. Synovitis was confirmed by ultrasonography. Follow-up was completed on Jan 13, 2021. All participants meeting the intention-to-treat principle were included in the analysis. This trial was registered with EudraCT (2013-003413-18)., Findings: Between Dec 22, 2014, and Jan 14, 2019, 280 individuals were evaluated for eligibility and, of 213 participants, 110 were randomly assigned to abatacept and 103 to placebo. During the treatment period, seven (6%) of 110 participants in the abatacept group and 30 (29%) of 103 participants in the placebo group met the primary endpoint. At 24 months, 27 (25%) of 110 participants in the abatacept group had progressed to rheumatoid arthritis, compared with 38 (37%) of 103 in the placebo group. The estimated proportion of participants remaining arthritis-free at 12 months was 92·8% (SE 2·6) in the abatacept group and 69·2% (4·7) in the placebo group. Kaplan-Meier arthritis-free survival plots over 24 months favoured abatacept (log-rank test p=0·044). The difference in restricted mean survival time between groups was 53 days (95% CI 28-78; p<0·0001) at 12 months and 99 days (95% CI 38-161; p=0·0016) at 24 months in favour of abatacept. During treatment, abatacept was associated with improvements in pain scores, functional wellbeing, and quality-of-life measurements, as well as low scores of subclinical synovitis by ultrasonography, compared with placebo. However, the effects were not sustained at 24 months. Seven serious adverse events occurred in the abatacept group and 11 in the placebo group, including one death in each group deemed unrelated to treatment., Interpretation: Therapeutic intervention during the at-risk phase of rheumatoid arthritis is feasible, with acceptable safety profiles. T-cell co-stimulation modulation with abatacept for 12 months reduces progression to rheumatoid arthritis, with evidence of sustained efficacy beyond the treatment period, and with no new safety signals., Funding: Bristol Myers Squibb., Competing Interests: Declaration of interests APC, PE, IBM, RT, KR, and TH received grant funding from Bristol Myers Squibb. APC, PE, and BAF received consulting fees from Bristol Myers Squibb. APC, PE, and MAD'A received speakers' bureau fees from Bristol Myers Squibb. MJ and SQ were beneficiaries of the APIPPRA study grant awarded by Bristol Myers Squibb. All other authors declare no competing interests., (Copyright © 2024 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY 4.0 license. Published by Elsevier Ltd.. All rights reserved.)

Objectives: Long-term outcomes in rheumatoid arthritis (RA) depend on early and effective disease control. Methotrexate (MTX) remains the first-line disease modifying therapy, however there are no biomarkers with which to identify those most likely to achieve remission. To address this unmet need we explored metabolic pathways involved in MTX mechanism of action within circulating CD4+T cells in a cohort of treatment naive patients with early RA., Methods: Purified CD4+T cells were isolated from peripheral blood of 68 patients with early RA commencing MTX. The expression of a range of putative MTX metabolism and mechanism of action targets were explored by flow-cytometry and transcriptional analysis. From these data significant predictors of Disease Activity Score 28-C reactive protein (DAS28-CRP) remission (<2.4 at 6 months) were determined by logistic regression (clinical; flow-cytometry data) and linear modelling (gene expression data)., Results: Low baseline DAS28-CRP was associated with remission at 6 months (p=0.02). Expression of the ectonucleotidase CD39, involved in ATP-ADP conversion during adenosine synthesis, was higher on CD4+CD25 High regulatory T cells at baseline in those achieving remission (molecules of equivalent fluorescence 1264 vs 847; p=0.007). Expression of other adenosine signalling elements in CD4+T cells were also upregulated at baseline in patients achieving remission: AMPD1 (p<0.001), ADORA2b (p=0.039) and ADORA3 (p=0.047). When combined into a single predictive metric, a combination of these variables outperformed baseline DAS28-CRP in prediction of early remission (area under the curve 0.92 vs 0.67, p=0.001) CONCLUSIONS: Adenosine signalling is important in the achievement of early remission with MTX in RA and biomarkers of adenosine activity may hold utility for the stratification of therapy in early disease., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2024. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)

Immune-mediated inflammatory diseases (IMIDs) are typically characterised by relapsing and remitting flares of inflammation. However, the unpredictability of disease flares impedes their study. Addressing this critical knowledge gap, we use the experimental medicine approach of immunomodulatory drug withdrawal in rheumatoid arthritis (RA) remission to synchronise flare processes allowing detailed characterisation. Exploratory mass cytometry analyses reveal three circulating cellular subsets heralding the onset of arthritis flare - CD45RO + PD1 hi CD4 + and CD8 + T cells, and CD27 + CD86 + CD21 - B cells - further characterised by single-cell sequencing. Distinct lymphocyte subsets including cytotoxic and exhausted CD4 + memory T cells, memory CD8 + CXCR5 + T cells, and IGHA1+ plasma cells are primed for activation in flare patients. Regulatory memory CD4 + T cells (Treg cells) increase at flare onset, but with dysfunctional regulatory marker expression compared to drug-free remission. Significant clonal expansion is observed in T cells, but not B cells, after drug cessation; this is widespread throughout memory CD8 + T cell subsets but limited to the granzyme-expressing cytotoxic subset within CD4 + memory T cells. Based on our observations, we suggest a model of immune dysregulation for understanding RA flare, with potential for further translational research towards novel avenues for its treatment and prevention., (© 2024. The Author(s).)

Purpose of Review: Type 1 interferons (IFN-I) are of increasing interest across a wide range of autoimmune rheumatic diseases. Historically, research into their role in rheumatoid arthritis (RA) has been relatively neglected, but recent work continues to highlight a potential contribution to RA pathophysiology., Recent Findings: We emphasise the importance of disease stage when examining IFN-I in RA and provide an overview on how IFN-I may have a direct role on a variety of relevant cellular functions. We explore how clinical trajectory may be influenced by increased IFN-I signalling, and also, the limitations of scores composed of interferon response genes. Relevant environmental triggers and inheritable RA genetic risk relating to IFN-I signalling are explored with emphasis on intriguing data potentially linking IFN-I exposure, epigenetic changes, and disease relevant processes. Whilst these data cumulatively illustrate a likely role for IFN-I in RA, they also highlight the knowledge gaps, particularly in populations at risk for RA, and suggest directions for future research to both better understand IFN-I biology and inform targeted therapeutic strategies., (© 2023. The Author(s).)

Janus kinases (JAKs) are a family of cytosolic tyrosine kinases that regulate cytokine signal transduction, including cytokines involved in a range of inflammatory diseases, such as RA, psoriasis, atopic dermatitis and IBD. Several small-molecule JAK inhibitors (JAKis) are now approved for the treatment of various immune-mediated inflammatory diseases. There are, however, key differences between these agents that could potentially translate into unique clinical profiles. Each JAKi has a unique chemical structure, resulting in a distinctive mode of binding within the catalytic cleft of the target JAK, and giving rise to distinct pharmacological characteristics. In addition, the available agents have differing selectivity for JAK isoforms, as well as off-target effects against non-JAKs. Other differences include effects on haematological parameters, DNA damage repair, reproductive toxicity and metabolism/elimination. Here we review the pharmacological profiles of the JAKis abrocitinib, baricitinib, filgotinib, peficitinib, tofacitinib and upadacitinib., (© The Author(s) 2023. Published by Oxford University Press on behalf of the British Society for Rheumatology.)

Competing Interests: Competing interests: All authors have completed the ICMJE uniform disclosure form at www.icmje.org/disclosure-of-interest/ and declare: support from the MRC-NIHR Methodology Research Programme for the submitted work. JdB has served on advisory boards and received fees from companies including Amgen, Astra Zeneca, Astellas, Bayer, Bioxcel Therapeutics, Daiichi, Genentech/Roche, GlaxoSmithKline (GSK), Harpoon, ImCheck Therapeutics, Janssen, Merck Serono, Merck Sharp and Dohme, Pfizer, and Sanofi Aventis; is an employee of the ICR, which has received funding or other support for his research work from AZ, Astellas, Bayer, Cellcentric, Daiichi, Genentech, Genmab, GSK, Janssen, Merck Serono, MSD, Menarini/Silicon Biosystems, Orion, Sanofi Aventis, Sierra Oncology, Taiho, Pfizer, and Vertex (the ICR has a commercial interest in abiraterone and poly (ADP-ribose) polymerase (PARP) inhibition in DNA repair defective cancers and PI3K/AKT pathway inhibitors (no personal income); was named as an inventor, with no financial interest for patent 8 822 438, submitted by Janssen that covers the use of abiraterone acetate with corticosteroids; has been chief investigator/principal investigator of many industry sponsored clinical trials; and is an NIHR senior investigator. The views expressed in this article are those of the author(s) and not necessarily those of the NHS, the NIHR, or the Department of Health. AM is employed by GSK. TRJE has received honorariums for consultancies (payable to the employing institution) from Ascelia, Astra Zeneca, Bayer, Bicycle Therapeutics, Bristol-Myers Squibb, Celgene Eisai, Karus Therapeutics, Medivir, MSD, Otsuka, Roche, and Seagen and honorariums for speaker’s fees (payable to employing institution) from Astra Zeneca, Ascelia, Bayer, Bicycle Therapeutics, Bristol Myers Squibb, Celgene, Eisai, Nucana, Otsuka, MSD, Roche, Medivir, Seagen, and United Medical; has received support of costs of commercial clinical trials (payable to employing institution) from Astra Zeneca, Basilea, Bayer, Celgene, MiNa Therapeutics, Roche, Pfizer, Sierra, Lilly, Eisai, GSK, Novartis, Bicycle Therapeutics, Johnson and Johnson, CytomX, Vertex, Plexxikon, Boehringer, Athinex, Adaptimmune, Bristol Myers Squibb, MSD, Medivir, Versatem, Nucana, Immunocore, Berg, Beigene, Iovance, Modulate, BiolinerX, Merck Serono, Nurix Therapeutics, T3P, Janssen Clovis, Sanofi-Aventis, Halozyme, Starpharma, UCB, Sapience, Seagen, Avacta, and Codiak; has received funding from Cancer Research UK, Chief Scientist’s Office Scotland, and the MRC; and is also the editor-in-chief of the British Journal of Cancer and has an honorary clinical contract with the NHS Greater Glasgow and Clyde Health Board. RP is an employee and a stockholder in F Hoffmann la Roche, and a family member is also an employee and a stockholder of F Hoffmann la Roche. KSH declares grant funding (payable to the employing institution) received by the Medical Research Future Fund (grant 2007425), National Health and Medical Research Council of Australia (grants 2016420 and 2015705), and Heart Foundation of Australia (grant 106607). SH and A-WC are members of the SPIRIT-CONSORT executive group and leading the current update of the SPIRIT 2013 and CONSORT 2010 reporting guidelines, funded by the UK MRC NIHR Better Methods, Better Research (MR/W020483/1). MU acted as consultant for eXYSTAT, Saryga, PTC Therapeutics International, ImCheck Therapeutics. MC is director of the Birmingham Health Partners Centre for Regulatory Science and Innovation, director of the Centre for Patient Reported Outcomes Research, and is an NIHR senior investigator. MJC receives funding from the NIHR, UK Research and Innovation (UKRI), NIHR Birmingham Biomedical Research Centre, NIHR Surgical Reconstruction and Microbiology Research Centre, NIHR, Applied Research Collaboration West Midlands, UK SPINE, Research England, European Regional Development Fund DEMAND Hub at the University of Birmingham and University Hospitals Birmingham NHS Foundation Trust, and the NIHR Birmingham-Oxford Blood and Transplant Research Unit in Precision Transplant and Cellular Therapeutics; funding from Health Data Research UK, Innovate UK (part of UKRI), Macmillan Cancer Support, UCB Pharma, Janssen, GSK, Gilead Sciences, European Commission, European Federation of Pharmaceutical Industries and Associations, and the Brain Tumour Charity; personal fees from Aparito, CIS Oncology, Takeda Pharmaceuticals, Merck, Daiichi Sankyo, Glaukos, GSK, the Patient-Centered Outcomes Research Institute, Genentech, and Vertex Pharmaceuticals outside the submitted work; and lecture fees from the University of Maastricht, Maastricht, Netherlands; in addition, a family member owns shares in GSK. DPR is the volunteer vice president of the Canadian Arthritis Patient Alliance, a patient led and run organisation that derives most of its funding from independent grants from pharmaceutical companies. OB is an employee of Bayer AG. JM is an employee of Cytel (Australia). LS declares grant funding from AstraZeneca, Bayer, Pfizer, Merck, Roche, REPARE, Treadwell, and Janssen; has provided expert testimony for CADTH Health Canada; and also declares ownership of AstraZeneca stock/options. LM received speaker fees from Bayer; co-organiser, chair, and speaker fees at two educational preceptorships (online webinars); advisory board/consultancy honorariums from Tesaro, BMS, and Illumina; and is a member of external data monitoring committees for early phase clinical trials run between Eisai and Merck. RL is an employee and stockholder of Bristol Myers Squibb. JB declares consultancy fees from Mirati, Insmed, Oxford Biotherapeutics, Biosapien, EMD Serono, Ipsen, Merck Sharp and Dohme, Perus, BMS, and Bexion; grant funding from Abbvie, Astellas, Atreca, Bayer, Dragonfly, I-Mab, Lilly, Incyte, EMD Serono, Pfizer, BMS, Transcenta Therapeutics, Tyra, Totus, Sumitomo Dainippon Pharma Oncology, 23 and me, Parthenon, and Hibercell; JB also sits on data safety monitoring committees for Astra Zeneca, Novocure, and Boehringer-Ingelheim. All other authors declare no conflicts of interest.

Mild cognitive impairment (MCI) represents a liminal state between full cognitive health and dementia. The diagnosis is applied unevenly and cannot be accurately prognosticated, even with the use of biomarkers, and there is no established intervention to reduce risk of progression to dementia. Owing to the limited benefit and potential for iatrogenic harm associated with an MCI diagnosis, a better understanding of its psychosocial consequences is needed. In the linked paper, Munawar and colleagues provide cautious optimism; their patients were generally unharmed by an MCI diagnosis. However, the majority of patients and families either did not recall or did not fully understand the implications for future dementia risk. Only 20% made lifestyle changes, and the number receiving hearing aids was very low. These data demonstrate the poor return on using the clinic as the setting for improving 'brain health'. Initiatives to prevent dementia are more effectively and equitably applied at population level.

Cerebral small vessel disease (SVD) is a major cause of cognitive impairment in older people. As secondary endpoints in a phase-2 randomised clinical trial, we tested the effects of single administration of a widely-used PDE5 inhibitor, tadalafil, on cognitive performance in older people with SVD. In a double-blinded, placebo-controlled, cross-over trial, participants received tadalafil (20 mg) and placebo on two visits ≥ 7 days apart (randomised to order of treatment). The Montreal Cognitive Assessment (MOCA) was administered at baseline, alongside a measure to estimate optimal intellectual ability (Test of Premorbid Function). Then, before and after treatment, a battery of neuropsychological tests was administered, assessing aspects of attention, information processing speed, working memory and executive function. Sixty-five participants were recruited and 55 completed the protocol ( N  = 55, age: 66.8 (8.6) years, range 52-87; 15/40 female/male). Median MOCA score was 26 (IQR: 23, 27], range 15-30). No significant treatment effects were seen in any of the neuropsychological tests. There was a trend towards improved performance on Digit Span Forward (treatment effect 0.37, C.I. 0.01, 0.72; P  = 0.0521). We did not identify significant treatment effects of single-administration tadalafil on neuropsychological performance in older people with SVD. The trend observed on Digit Span Forward may help to inform future studies., Clinical Trial Registration: http://www.clinicaltrials.gov. Unique identifier: NCT00123456, https://eudract.ema.europa.eu. Unique identifier: 2015-001,235-20NCT00123456., Competing Interests: MMHP and LRB were employed as part of the PASTIS trial, JDI was Principal Investigator and AHH was Chief Investigator. CK is a PI on clinical trials funded by Bristol-Myers-Squibb and Bayer, and has received funding from NovoNordisk, all not relevant to the present trial. JDI has been a PI on clinical trials funded by Roche, Merck and Lupin Pharmaceuticals and has received funds from Nestle, Biogen and Roche, none relevant to the present trial. AHH leads MRC-Dementias Platform UK Vascular Experimental Medicine group. All other authors report no relevant disclosures. The trial was subject to an ICH-Good Clinical Practice (GCP) inspection by the UK medicines regulator, the MHRA, in September 2019, which identified a number of regulatory findings associated with the management of the trial. These are outlined in the supplementary information., (© 2023 The Authors.)

Alzheimer's disease and related dementias (ADRD) remain a major health-care challenge with few licensed medications. Repurposing existing drugs may afford prevention and treatment. Phosphodiesterase-5 (PDE5) is widely expressed in vascular myocytes, neurons, and glia. Potent, selective, Food and Drug Administration-approved PDE5 inhibitors are already in clinical use (sildenafil, vardenafil, tadalafil) as vasodilators in erectile dysfunction and pulmonary arterial hypertension. Animal data indicate cognitive benefits of PDE5 inhibitors. In humans, real-world patient data suggest that sildenafil and vardenafil are associated with reduced dementia risk. While a recent clinical trial of acute tadalafil on cerebral blood flow was neutral, there may be chronic actions of PDE5 inhibition on cerebrovascular or synaptic function. We provide a perspective on the potential utility of PDE5 inhibitors for ADRD. We conclude that further prospective clinical trials with PDE5 inhibitors are warranted. The choice of drug will depend on brain penetration, tolerability in older people, half-life, and off-target effects., Highlights: Potent phosphodiesterase-5 (PDE5) inhibitors are in clinical use as vasodilators.In animals PDE5 inhibitors enhance synaptic function and cognitive ability.In humans the PDE5 inhibitor sildenafil is associated with reduced risk of Alzheimer's disease.Licensed PDE5 inhibitors have potential for repurposing in dementia.Prospective clinical trials of PDE5 inhibitors are warranted., Competing Interests: Dr. Hainsworth has received honoraria from Eli‐Lilly and from NIA. He is chair of the Dementias Platform UK Vascular Experimental Medicine group. Dr. Arancio is a co‐inventor of a series of PDE5 inhibitors that were licensed by Columbia University to Aribio Co. Dr. Elahi is chair of the Vascular Cognitive Disorders Group within ISTAART. Dr. Isaacs has received advisory board fees from Roche and Nestle Scientific, consultancy fees from Roche, and a speaker's fee from Biogen, all paid to his institution. He has received funded conference registration, travel, and accommodation from Roche. Dr. Cheng has received honoraria from National Institute on Aging (NIA)., (© 2023 The Authors. Alzheimer's & Dementia: Translational Research & Clinical Interventions published by Wiley Periodicals LLC on behalf of Alzheimer's Association.)

This study aimed to determine the minimum number of days required to reliably estimate free-living sedentary time, light-intensity physical activity (LPA) and moderate-intensity physical activity (MPA) using accelerometer data in people with Rheumatoid Arthritis (RA), according to Disease Activity Score-28-C-reactive protein (DAS-28-CRP). Secondary analysis of two existing RA cohorts with controlled (cohort 1) and active (cohort 2) disease was undertaken. People with RA were classified as being in remission (DAS-28-CRP < 2.4, n = 9), or with low (DAS-28-CRP ≥ 2.4-≤ 3.2, n = 15), moderate (DAS-28-CRP > 3.2-≤ 5.1, n = 41) or high (DAS-28-CRP > 5.1, n = 16) disease activity. Participants wore an ActiGraph accelerometer on their right hip for 7 days during waking hours. Validated RA-specific cut-points were applied to accelerometer data to estimate free-living sedentary time, LPA and MPA (%/day). Single-day intraclass correlation coefficients (ICC) were calculated and used in the Spearman Brown prophecy formula to determine the number of monitoring days required to achieve measurement reliability (ICC ≥ 0.80) for each group. The remission group required ≥ 4 monitoring days to achieve an ICC ≥ 0.80 for sedentary time and LPA, with low, moderate and high disease activity groups requiring ≥ 3 monitoring days to reliably estimate these behaviours. The monitoring days required for MPA were more variable across disease activity groups (remission =  ≥ 3 days; low =  ≥ 2 days; moderate =  ≥ 3 days; high =  ≥ 5 days). We conclude at least 4 monitoring days will reliably estimate sedentary time and LPA in RA, across the whole spectrum of disease activity. However, to reliably estimate behaviours across the movement continuum (sedentary time, LPA, MPA), at least 5 monitoring days are required., (© 2023. Crown.)

Background: The COVID-19 pandemic impacted on the provision of care and routine activity of all National Health Service (NHS) services. While General Practitioner referrals to memory services in England have returned to pre-pandemic levels, the estimated dementia diagnosis rate (DDR) fell by 5.4% between March 2020 and February 2023., Methods: In this paper we explore whether this reduction is accurate or is an artefact of the way the NHS collects data., Results: We explore the processes that may have affected national dementia diagnosis rates during and following the COVID-19 pandemic., Conclusions: We discuss what action could be taken to improve the DDR in the future., (© 2023 The Authors. International Journal of Geriatric Psychiatry published by John Wiley & Sons Ltd.)

Background: Targeting interleukin (IL)-6 has become a major therapeutic strategy in the treatment of immune-mediated inflammatory disease. Interference with the IL-6 pathway can be directed at the specific receptor using anti-IL-6Rα antibodies or by directly inhibiting the IL-6 cytokine. This paper is an update of a previous consensus document, based on most recent evidence and expert opinion, that aims to inform on the medical use of interfering with the IL-6 pathway., Methods: A systematic literature research was performed that focused on IL-6-pathway inhibitors in inflammatory diseases. Evidence was put in context by a large group of international experts and patients in a subsequent consensus process. All were involved in formulating the consensus statements, and in the preparation of this document., Results: The consensus process covered relevant aspects of dosing and populations for different indications of IL-6 pathway inhibitors that are approved across the world, including rheumatoid arthritis, polyarticular-course and systemic juvenile idiopathic arthritis, giant cell arteritis, Takayasu arteritis, adult-onset Still's disease, Castleman's disease, chimeric antigen receptor-T-cell-induced cytokine release syndrome, neuromyelitis optica spectrum disorder and severe COVID-19. Also addressed were other clinical aspects of the use of IL-6 pathway inhibitors, including pretreatment screening, safety, contraindications and monitoring., Conclusions: The document provides a comprehensive consensus on the use of IL-6 inhibition to treat inflammatory disorders to inform healthcare professionals (including researchers), patients, administrators and payers., Competing Interests: Competing interests: DA: Grants or contracts from any entity: AbbVie, Amgen, Eli Lilly, Novartis, Roche, SoBi and Sanofi; Consulting fees: AbbVie, Amgen, Eli Lilly, Janssen, Merck, Novartis, Pfizer, Roche and Sandoz; Support for attending meetings and/or travel: AbbVie, Gilead, Sandoz, Pfizer, BMSAK: Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events: AbbVie, Bristol-Myers Squibb, Celgene, Eli-Lilly, Gilead, Janssen, Merck Sharp and Dohme, Novartis and PfizerKK: Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events: Boehringer Ingelheim, UCB Pharma and AbbVie; Support for attending meetings and/or travel: AbbVie, Gilead, Sandoz, Pfizer and BMSJI: Grants or contracts from any entity: Pfizer, GSK and Janssen; Consulting fees: AbbVie, Gilead and BMS; Payment or honoraria for lectures, presentations, speaker bureaus, manuscript writing or educational events: AbbVie, Gilead and Roche; Support for attending meetings and/or travel: Eli Lilly and Gilead; Participation on a Data Safety Monitoring Board or Advisory Board: Eli Lilly; Leadership or fiduciary role in other board, society, committee or advocacy group: Versus Arthritis Board member (unpaid) NS: Grants or contracts from any entity: AstraZeneca, Boehringer Ingelheim, Novartis and Roche Diagnostics; Consulting fees: Afimmune, Amgen, AstraZeneca, Boehringer Ingelheim, Eli Lilly, Hanmi Pharmaceuticals, MSD, Novartis, Novo Nordisk, Pfizer and SanofiMV: Grants or contracts from any entity: PfizerBC: Grants or contracts from any entity: Pfizer, Roche, Chugai and Novartis; Consulting fees: AbbVie, Celltrion, Janssen, Gilead-Galapagos, Eli Lilly, Novartis, Roche-Chugai; Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events: AbbVie, BMS, Celltrion, Gilead-Galapagos, Janssen, Eli Lilly, Merck, Pfizer and Roche-ChugaiNB: All support for the present manuscript: Vienna Medical Academy; Consulting fees: Amgen, EULAR, Galapagos, Global Alliance for Patient Access, Grunenthal, Eli Lilly, Pfizer and Sanofi; Support for attending meetings and/or travel: EULAR and Global Alliance for Patient Access; Receipt of equipment, materials, drugs, medical writing, gifts or other services: GalapagosJB: Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events: Eli Lilly and Galapagos; Participation on a Data Safety Monitoring Board or Advisory Board: SyneosGRB: All support for the present manuscript: Sanofi; Consulting fees: AbbVie, Galapagos, Lilly, Pfizer, Roche and Sanofi; Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events: AbbVie, Galapagos, Lilly, Pfizer, Roche and SanofiVPB: Grants or contracts from any entity: NIH (NIAID/NIAMS), The Cedar Hill Foundation, Amgen and BMS; Consulting fees: Amgen, BMS, Genzyme, Gilead, Janssen, Pfizer and Sanofi-Aventis; Participation on a Data Safety Monitoring Board or Advisory Board: KAI for NIHRC: noneEC: Grants or contracts from any entity: Bio-Cancer, Biogen, Novartis, Pfizer and Sanofi; Consulting fees: AbbVie, Amgen, BMS, Biocon, Eli Lilly, Galapagos, Chugai Pharma, Janssen, Novartis, Pfizer, Regeneron, Roche, Sanofi and RPharm; Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events: AbbVie, Amgen, BMS, Chugai Pharma, Eli Lilly, Galapagos, Gilead, Janssen, Novartis, Pfizer, Regeneron, Roche, RPharm and Sanofi; Support for attending meetings and/or travel: Gilead, Galapagos, AbbVie and Eli LillyMT: Grants or contracts from any entity: Albireo, Cymabay, Falk, Gilead, Intercept, MSD, Takeda, Alnylam and Ultragenyx; Consulting fees: Albireo, BioMX, Boehringer Ingelheim, Falk, Genfit, Intercept, Janssen, MSD, Gilead, Novartis, Shire, Phenex and Regulus; Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events: Falk Foundation, Gilead, Intercept and MSD; Support for attending meetings and/or travel: AbbVie, Falk, Gilead and Intercept; Patents planned, issued or pending: Co-Inventor patent on medical use of nor-UDCATS: Grants or contracts from any entity: AbbVie and Roche; Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events: AbbVie, Roche, Sanofi, Takeda and NovartisCC: Grants or contracts from any entity: AbbVie, Boehringer Ingelheim, Ewopharma, Lilly, Novartis and Pfizer; Consulting fees: AbbVie, Amgen, Boehringer Ingelheim, Ewopharma, Lilly, Novartis and Pfizer; Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events: AbbVie, Amgen, Boehringer Ingelheim, Ewopharma, Lilly, Novartis and Pfizer; Participation on a Data Safety Monitoring Board or Advisory Board: AbbVie, Amgen, Boehringer Ingelheim, Ewopharma and Pfizer; Leadership or fiduciary role in other board, society, committee or advocacy group: Romanian Society of Rheumatology, Romanian Registry of Rheumatic Diseases and Romanian League against RheumatismMKC: Grants or contracts from any entity: Gilead; Consulting fees: AstraZeneca, BMS, GSK and Shannon Pharmaceuticals; Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events: AstraZeneca and Gilead; Leadership or fiduciary role in other board, society, committee or advocacy group: Arthritis Foundation, New York Chapter; Stock or stock options: Johnson and Johnson, Regeneron and AmgenMD: All support for the present manuscript: Medical academy of Vienna; Grants or contracts from any entity: Roche, Sanofi, Pfizer, AbbVie, Eli Lilly, BMS, Merck, Galapagos and UCB; Consulting fees: Roche, Sanofi, Pfizer, AbbVie, Eli Lilly, BMS, Merck, Galapagos and UCB; Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events: Roche, Sanofi, Pfizer, AbbVie, Eli Lilly, BMS, Merck, Galapagos and UCBGP: none. DvdH: Consulting fees: AbbVie, Bayer, BMS, Cyxone, Eisai, Galapagos, Gilead, Glaxo-Smith-Kline, Janssen, Lilly, Novartis, Pfizer and UCB Pharma; Other financial or non-financial interests: Director of Imaging Rheumatology bv.PE: Grants or contracts from any entity: Abbvie, BMS, Lilly, Novartis, Pfizer, Roche and Samsung; Consulting fees: Abbvie, Astra-Zeneca, Boehringer Ingelheim, Galapagos, Gilead, Eli Lilly and Novartis; Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events: Abbvie, BMS, GSK, Eli Lilly and NovartisEM: All support for the present manuscript: University of Vienna funding; Grants or contracts from any entity: Roche, Jansen, Pfizer, AbbVie and Novartis; Consulting fees: GSK, Roche, Novartis, AbbVie, Pfizer, Janssen, Eli Lilly and AstraZeneca; Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events: GSK, Pfizer, AbbVie, Lilly, Amgen, Janssen and AstraZeneca; Participation on a Data Safety Monitoring Board or Advisory Board: GSKRF: Consulting fees: AbbVie, Amgen, BMS, GSK, Gilead, Pfizer, Novartis and Eli Lilly; Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events: AbbVie and Pfizer; Participation on a Data Safety Monitoring Board or Advisory Board: AbbVie, Pfizer, Eli Lilly and GSKCG: noneKH: Grants or contracts from any entity: Pfizer and BMS; Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events: AbbViePAM: Grants or contracts from any entity: AbbVie, AstraZeneca, Boeringher-Ingelheim, Bristol-Myers Squibb, ChemoCentryx, Eicos, Forbius, Genentech/Roche, Genzyme/Sanofi, GlaxoSmithKline, InflaRx, Sanofi and Takeda; Royalties or licenses: UpToDate; Consulting fees: AbbVie, AstraZeneca, Boeringher-Ingelheim, Bristol-Myers Squibb, ChemoCentryx, CSL Behring, Dynacure, EMDSerono, Forbius, Genentech/Roche, Genzyme/Sanofi, GlaxoSmithKline, Immagene, InflaRx, Jannsen, Kiniksa, Kyverna, Magenta, MiroBio, Mitsubishi, Neutrolis, Novartis, Pfizer, Regeneron, Sparrow, Takeda and TalarisTT: Grants or contracts from any entity: Chugai Pharmaceutical; Consulting fees: Chugai, Janssen and Rpharma; Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events: Chugai, BMS, Janssen and SanofiXM: Consulting fees: BMS, Novartis, Galapagos, Sanofi, GSK, Pfizer, Janssen and UCBKW: Grants or contracts from any entity: BMS and Pfizer; Consulting fees: AbbVie, BMS, Eli Lily, Galapagos, Gilead, Pfizer, Roche, UCB, GSK, Novartis, AstraZeneca, Regeneron and SanofiMdW: Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events: Pfizer, Celgene, Eli Lilly and UCBKP: Payments for lectures: Roche, AbbVie, Pfizer, Eli Lilly, Amgen, SOBI, UCB and MSD; Advisory Board: Roche, AbbVie, Pfizer, Eli Lilly, Amgen, SOBI, UCB and MSDPN: Grants or contracts from any entity: Roche, Abbvie, Pfizer, Janssen, Gilead/Galapagos, BMS, Novartis and Eli Lilly; Consulting fees: Abbvie, Pfizer, janssen, BMS, Novartis, Lilly, Roche and Gilead/Galapagos; Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events: Abbvie, Pfizer, janssen, BMS, Novartis, Lilly, Roche and Gilead/GalapagosYT: Grants or contracts from any entity: Asahi-Kasei, Abbvie, Chugai, Mitsubishi-Tanabe, Eisai, Takeda, Corrona, Daiichi-Sankyo, Kowa and Behringer-Ingelheim; Consulting fees: Eli Lilly, Daiichi-Sankyo, Taisho, Ayumi, Sanofi, GSK and Abbvie; Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events: Gilead, AbbVie, Boehringer-Ingelheim, Eli Lilly, Mitsubishi-Tanabe, Chugai, Amgen, YL Biologics, Eisai, Astellas, Bristol-Myers and AstraZenecaCD: Grants or contracts from any entity: FWF Austria and Celgene; Consulting fees: AbbVie, MSD, Pfizer, Roche, Sanofi, Janssen, Novartis, Eli Lilly and Galapagos; Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events: AbbVie, MSD, Pfizer, Roche, Sanofi, Janssen, Novartis, Eli Lilly and Galapagos; Support for attending meetings and/or travel: AbbVie, MSD, Pfizer, Roche, Sanofi, Janssen, Novartis, Eli Lilly and Galapagos; Receipt of equipment, materials, drugs, medical writing, gifts or other services: MSDMLH: Grants or contracts from any entity: Novartis, Roche and Sandoz; Consulting fees: BMS and Samsung Bioepis; Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events: MSD, AbbVie, Novartis, Merck, Eli Lilly, Medac and Sandoz; Support for attending meetings and/or travel: The DANBIO registry; Participation on a Data Safety Monitoring Board or Advisory Board: CellTrion and Eli Lilly; Leadership or fiduciary role in other board, society, committee or advocacy group: Chair of the DANBIO steering committee, Member of the Danish Rheumatism Association’s Board, Member of the Danish Rheumatism Association’s research council, Member of EULAR Quality of Care Committee, Co-chair of the EuroSpA collaboration; Receipt of equipment, materials, drugs, medical writing, gifts or other services: Study drug for the NORD-STAR study/ Abatacept and Certolizumab pegolHSK: Consulting fees: Roche, Chugai and Sanofi-Aventis; Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events: Roche, Chugai and Sanofi-Aventis; Participation on a Data Safety Monitoring Board or Advisory Board: Roche, Chugai and Sanofi-AventisMN: Grants or contracts from any entity: Pfizer, Amgen, Galapagos and AbbVie; Consulting fees: AbbVie; Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events: Celgene and AbbVie; Participation on a Data Safety Monitoring Board or Advisory Board: AbbVieAS: Grants or contracts from any entity: oint, unconditional grant from AbbVie, Amgen, BMS, Celltrion, Fresenius Kabi, Hexal, Lilly, MSD, Viatris, Pfizer, Roche, Samsung Bioepis, Sanofi-Aventis and UCB; Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events: AbbVie, Amgen, BMS, Celltrion, Janssen, Lilly, Pfizer, Roche, Sanofi and UCBAL: Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events: AbbVie, MSD, Alfasigma, Celltrion, BMS, Celgene, Eli-Lilly, Sanofi Genzyme, Pfizer, Galapagos, Gilead, Novartis and SOBIAR: Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events: AbbVie, Angelini, Pfizer, Novartis, Reckitt Benckiser and SOBI; Leadership or fiduciary role in other board, society, committee or advocacy group: President, Pediatric Rheumatology European Society (PReS)ARR: Consulting fees: Sanofi, Roche, AbbVie, Eli Lilly, Gilead, BMS and Novartis; Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events: AbbVie, Pfizer, Sanofi, UCB, BMS, Gilead, Roche, Novartis and Janssen; Payment for expert testimony: AbbVie, Novartis and Gilead; Support for attending meetings and/or travel: AbbVie and Sanofi; Participation on a Data Safety Monitoring Board or Advisory Board: RPharmIM: Grants or contracts from any entity: AbbVie, BMS, Eli Lilly, Janssen, Pfizer, UCB, Amgen and Novartis; Consulting fees: AbbVie, BMS, Eli Lilly, Janssen, Pfizer, Sanofi, Novartis, Gilead, Amgen, UCB, GSK and Moonlake; Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events: AbbVie; Leadership or fiduciary role in other board, society, committee or advocacy group: Vice Principal & Head of MVLS College/University of Glasgow, Board Member/ NHS Greater Glasgow & Clyde and Evelo; Stock or stock options: Causeway Therapeutics, Compugen, Cabaletta and EveloBio; JS: grants to his institution from Abbvie, Astro, AstraZeneca, Janssen, Lilly, Merck Sharpe & Dohme, Pfizer, and Roche; Expert advice for, or had symposia speaking engagements with, AbbVie, Amgen, AstraZeneca, Astro, Bristol-Myers Squibb, Celgene, Celltrion, Chugai, Gilead, ILTOO Pharma, Janssen, Lilly, Merck Sharp & Dohme, Novartis-Sandoz, Pfizer, R-Pharm, Roche, Samsung, Sanofi and UCB., (© Author(s) (or their employer(s)) 2023. No commercial re-use. See rights and permissions. Published by BMJ.)

Objectives: Interventions aimed at increasing TNF-α inhibitor serum drug levels (SDLs) may improve treatment response; however, previous studies suggesting SDL cut-offs have not accounted for treatment adherence. The aim of this study was to establish the relationship between adalimumab/certolizumab SDLs and EULAR good vs non-/moderate response and to define SDL cut-offs associated with good response in fully adherent patients., Methods: In a prospective observational study, 475 patients with RA were treated with certolizumab (n = 192) or adalimumab (n = 283). At baseline and 3, 6 and 12 months, patients had 28-joint DAS, self-reported treatment adherence and SDLs measured. Fully adherent patients were analysed as a subgroup. Follow-up data at 3, 6 and 12 months were analysed separately. Median SDLs were compared in good vs non-/moderate response patients and receiver operating characteristics (ROC) curves were used to establish cut-off SDLs., Results: Fully adherent good responders had significantly higher median adalimumab/certolizumab SDLs compared with non-/moderate responders (P = 0.04 and P = 0.0005, respectively). ROC analysis reported 3 month non-trough adalimumab SDLs discriminated good vs non-/moderate response with an area under the curve (AUC) of 0.63 (95% CI 0.52, 0.75), with a cut-off of 7.5 mg/l being 39.1% specific and 80.9% sensitive. Similarly, 3 month non-trough certolizumab SDLs discriminated good vs non-/moderate response with an AUC of 0.65 (95% CI 0.51, 0.78), with a cut-off of 26.0 mg/l being 43.9% specific and 77.8% sensitive., Conclusion: In fully adherent patients, higher SDLs are detected in good responders, suggesting that interventions to improve SDLs, such as encouraging adherence, could improve treatment response. The 3 month non-trough SDL cut-offs of 7.5 mg/l for adalimumab and 26.0 mg/l for certolizumab may be useful in clinical practice., (© The Author(s) 2022. Published by Oxford University Press on behalf of the British Society for Rheumatology.)

To detail the unmet clinical and scientific needs in the field of rheumatology. After a 2-year hiatus due to the SARS-CoV-2 pandemic, the 22nd annual international Advances in Targeted Therapies meeting brought together more than 100 leading basic scientists and clinical researchers in rheumatology, immunology, epidemiology, molecular biology and other specialties. Breakout sessions were convened with experts in five rheumatological disease-specific groups including: rheumatoid arthritis (RA), psoriatic arthritis, axial spondyloarthritis, systemic lupus erythematosus and connective tissue diseases (CTDs). In each group, experts were asked to identify and prioritise current unmet needs in clinical and translational research, as well as highlight recent progress in meeting formerly identified unmet needs. Clinical trial design innovation was emphasised across all disease states. Within RA, developing therapies and trials for refractory disease patients remained among the most important identified unmet needs and within lupus and spondyloarthritis the need to account for disease endotypes was highlighted. The RA group also identified the need to better understand the natural history of RA, pre-RA states and the need ultimately for precision medicine. In CTD generally, experts focused on the need to better identify molecular, cellular and clinical signals of early and undifferentiated disease in order to identify novel drug targets. There remains a strong need to develop therapies and therapeutic strategies for those with treatment-refractory disease. Increasingly it is clear that we need to better understand the natural history of these diseases, including their 'predisease' states, and identify molecular signatures, including at a tissue level, which can facilitate disease diagnosis and treatment. As these unmet needs in the field of rheumatic diseases have been identified based on consensus of expert clinicians and scientists in the field, this document may serve individual researchers, institutions and industry to help prioritise their scientific activities., Competing Interests: Competing interests: KLW has received research grants and/or consulting honoraria from Janssen Pfizer, AbbVie, Union Chimique Belge (UCB), Eli Lilly & Company, Galapagos, GlaxoSmithKline (GSK), Roche, Gilead, BMS, Regeneron, Sanofi, AstraZeneca, Novartis; JDI has received grants and/or consulting honoraria from Janssen, Pfizer, AbbVie, BMS, Gilead, Roche, UCB, Eli Lilly; PJM has received grants and/or consulting honoraria from AbbVie, Acelyrin, Aclaris, Amgen, Boehringer Ingelheim, BMS, Eli Lilly, Galapagos, Gilead, GlaxoSmithKline, Inmagene, Janssen, Moonlake, Novartis, Pfizer, Sun Pharma, UCB; DTB has received grants/or consulting honoraria from AstraZeneca, Abbvie, Pfiser, GSK and Lilly; XB has received grants and/or consulting honoraria from AbbVie, BMS, MSD, Celgene, Chugai, Merck, Novartis, Pfizer, Sandoz, and UCB; J-EG has received grants and/or consulting honoraria from Abbvie, BMS, Gilead, Galapagos, Lilly, MSD, Novartis, Pfizer, Roche Chugai, Sanofi; SS has received grants and/or consulting honoraria from Amgen, AbbVie, Biogen, Eli Lilly, GSK, Janssen, UCB, Pfizer, Boehringer Ingelheim and Novartis; MM has received grants and/or consulting honoraria from Lilly, GSK, Astra Zeneca, UCB, Janssen, Abbvie and Pfizer; NB has received grants and/or consulting honoraria from Roche, MSD, Pfizer, GSK, Galapagos, Vifor and Lilly; RL has received grants and/or consulting honoraria from Abbvie, Boehringer-Ingelheim, Celgene, Eli-Lilly, Galapagos, Janssen, MSD, Novartis, Pfizer, Sandoz, Kabi-Fresenius, Biosplice (formerly Samumed) and UCB; DA has received grants and/or consulting honoraria from Abbvie, Amgen, Galapagos, Lilly, Janssen, Merck, Novartis, Pfizer, Sandoz and Sanofi; IBM has received grants and/or consulting honoraria from AbbVie, Amgen, BMS, Causeway Therapeutics, Cabaletta, Eli Lilly, Gilead, Janssen, Novartis, Pfizer, Sanofi, UCB, Evelo, Compugen, AstraZeneca, Moonlake and serves as a NHS GGC board member, Evelo Board of Directors, Versus Arthritis Trustee Status; REV has received grants and/or consulting honoraria from AbbVie, Amgen, Boehringer Ingelheim, BMS, Janssen-Cilag, GSK, Hexal, Neutrolis, Novartis and Pfizer; EMG: serves as an associate editor at the New England Journal of Medicine; JSS has received research grants and/or consulting honoraria from AbbVie, Amgen, AstraZeneca, Astro, Bristol-Myers Squibb, Chugai, Janssen, Lilly, Merck Sharp & Dohme, Novartis-Sandoz, Pfizer, R-Pharma, Roche, Samsung and UCB serves as the editor of Annals of Rheumatic Diseases but was not involved in the handling or review of this manuscript., (© Author(s) (or their employer(s)) 2023. No commercial re-use. See rights and permissions. Published by BMJ.)

Objectives: The inflammatory protein calprotectin (MRP8/14) has been identified as a promising biomarker of treatment response in rheumatoid arthritis (RA). Our aim was to test MRP8/14 as a biomarker of response to tumour necrosis factor (TNF)-inhibitors in the largest RA cohort to date and to compare with C-reactive protein (CRP)., Methods: Serum MRP8/14 was measured in 470 patients with RA about to commence treatment with adalimumab (n=196) or etanercept (n=274). Additionally, MRP8/14 was measured in the 3-month sera of 179 adalimumab-treated patients. Response was determined using European League against Rheumatism (EULAR) response criteria calculated using the traditional 4-component (4C) DAS28-CRP and alternate validated versions using 3-component (3C) and 2-component (2C), clinical disease activity index (CDAI) improvement criteria and change in individual outcome measures. Logistic/linear regression models were fitted for response outcome., Results: In the 3C and 2C models, patients with RA were 1.92 (CI: 1.04 to 3.54) and 2.03 (CI: 1.09 to 3.78) times more likely to be classified as EULAR responders if they had high (75th quartile) pre-treatment levels of MRP8/14 compared with low (25th quartile). No significant associations were observed for the 4C model. When only using CRP as a predictor, in the 3C and 2C analyses, patients above the 75th quartile were 3.79 (CI: 1.81 to 7.93) and 3.58 (CI: 1.74 to 7.35) times more likely to be EULAR responders and addition of MRP8/14 did not significantly improve model fit (p values=0.62 and 0.80, respectively). No significant associations were observed in the 4C analysis. Exclusion of CRP from the outcome measure (CDAI) did not result in any significant associations with MRP8/14 (OR 1.00 (CI: 0.99 to 1.01), suggesting that the associations were due to the correlation with CRP and that there is no additional utility of MRP8/14 beyond use of CRP in patients with RA starting TNFi therapy., Conclusion: Beyond correlation with CRP, we found no evidence to suggest that MRP8/14 explains additional variability in response to TNFi in patients with RA over and above CRP alone., Competing Interests: Competing interests: KLH reports grants from BMS and Pfizer, and honoraria from AbbVie for speaking at an educational meeting, outside the submitted work. AB is an NIHR Senior Investigator and has received grants from BMS, Pfizer, Galapagos and Scipher Medicine as well as honoraria from Roche-Chugai for speaking at educational meetings. SV and DP have received grants from BMS outside the submitted work. AWM is an NIHR Senior Investigator and has received grants or honoraria on behalf of the University of Leeds from Roche-Chugai, Kiniska Pharmaceuticals, Regeneron, Sanofi, Vifor, Abbvie and GlaxoSmithKline for work unrelated to this manuscript. JDI has received research funding from GSK, Janssen and Pfizer, and speaker/consultancy fees from AbbVie, BMS, Gilead, Roche and UCB outside of this submitted work. KLH is an Associate Editor at the Annals of Rheumatic Diseases but had no role in the peer review of this work. All other authors declare no other competing interests., (© Author(s) (or their employer(s)) 2023. Re-use permitted under CC BY. Published by BMJ.)

We previously hypothesized that functional cognitive disorder is characterized by heightened subjective mental effort, exhausted attentional reserve and metacognitive failure. To test this hypothesis, we administered a Stroop colour-word task in which attentional demand was varied by task difficulty (congruent versus incongruent cues) and the presence of a secondary auditory stimulus (passive or active listening to an oddball-type paradigm). We measured subjective mental effort, objective performance (reaction times and accuracy), metacognition and EEG-based biomarkers of mental workload. We tested 19 functional cognitive disorder patients and 23 healthy controls. Patients reported higher levels of depression, anxiety, fatigue, pain, sleep disruption, dissociation and obsessiveness. They rated their memory as significantly poorer than healthy controls; however, accuracy did not differ between groups in any condition. In contrast to healthy controls, patients rated their performance as poorer on the congruent Stroop task with background noise compared to silent conditions. Functional cognitive disorder was consistently associated with slower reaction times but this was not exacerbated by increased attentional demand. Patients but not healthy controls reported greater mental workload in noisy conditions but EEG biomarkers were similar between groups, regardless of task difficulty. Functional cognitive disorder has significant syndromic overlap with mood disorders and chronic fatigue and pain. It is associated with global metacognitive failure whereas local (task-specific) metacognition is only selectively impaired. Patients were slower than healthy controls, which might contribute to the 'brain fog' reported in this condition. Although subjective mental effort was increased in noisy conditions, we found no evidence of attentional exhaustion in functional cognitive disorder. Our results indicate that functional cognitive disorder is a multisystem condition affecting reaction time, subjective mental effort and global metacognition., (© The Author(s) 2022. Published by Oxford University Press on behalf of the Guarantors of Brain. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)

Age-associated B cells (ABCs) are an immune cell subset linked to autoimmunity, infection and ageing, and whose pathophysiological importance was recently highlighted using single cell synovial tissue profiling. To elucidate their pathophysiological relevance, peripheral blood (PB) ABCs from early rheumatoid arthritis (eRA) patients naïve to disease-modifying anti-rheumatic drugs (DMARDs) were compared with their synovial fluid (SF) counterparts, and to PB ABCs from psoriatic arthritis patients and healthy controls. PB and SF B-cell subsets were phenotyped by multi-parameter flow cytometry, sorted and subjected to gene expression profiling (NanoString nCounter® Immunology V2 Panel) and functional characterization (stimulated cytokine measurements by immunoassay). PB ABCs of eRA patients, which are transcriptionally distinct from those of control cohorts, express chemokine receptors and adhesion molecules, such as CXCR3, that favour homing to inflammatory sites over lymphoid tissue. These cells are an activated, class-switched B-cell subset expressing high levels of HLA-DR, co-stimulatory molecules and T-bet. Their secretion profile includes IL-12p70 and IL-23 but low levels of IL-10. High surface expression of FcRL family members, including FcRL3, furthermore suggests a role for these cells in autoimmunity. Finally, and unlike in the periphery where they are rare, ABCs are the predominant B-cell subsets in SF. These observations indicate the predilection of ABCs for inflammatory tissue in RA, where their propensity for antigen presentation and pro-inflammatory phenotype may support autoimmune pathology. Their potential as a therapeutic target therefore warrants further study., (© 2022 The Authors. Immunology published by John Wiley & Sons Ltd.)

Sarcopenia, a disorder that involves the generalized loss of skeletal muscle strength and mass, was formally recognized as a disease by its inclusion in the International Classification of Diseases in 2016. Sarcopenia typically affects older people, but younger individuals with chronic disease are also at risk. The risk of sarcopenia is high (with a prevalence of ≥25%) in individuals with rheumatoid arthritis (RA), and this rheumatoid sarcopenia is associated with increased likelihood of falls, fractures and physical disability, in addition to the burden of joint inflammation and damage. Chronic inflammation mediated by cytokines such as TNF, IL-6 and IFNγ contributes to aberrant muscle homeostasis (for instance, by exacerbating muscle protein breakdown), and results from transcriptomic studies have identified dysfunction of muscle stem cells and metabolism in RA. Progressive resistance exercise is an effective therapy for rheumatoid sarcopenia but it can be challenging or unsuitable for some individuals. The unmet need for anti-sarcopenia pharmacotherapies is great, both for people with RA and for otherwise healthy older adults., (© 2023. Springer Nature Limited.)

People with rheumatoid arthritis (RA) are disproportionately affected by sarcopenia, the generalised loss of muscle strength and mass, consequently facing an increased risk of falls, functional decline and death. Currently, there are no approved pharmacological treatments for sarcopenia. RA patients who start tofacitinib (a Janus kinase inhibitor) develop small increases in serum creatinine that are not explained by renal function changes and could reflect sarcopenia improvement. The RAMUS Study is a proof of concept, single-arm observational study in which patients with RA who commence tofacitinib according to routine care will be offered participation according to eligibility criteria. Participants will undergo lower limb quantitative magnetic resonance imaging, whole-body dual energy x-ray absorptiometry, joint examination, muscle function testing and blood tests at three time points: prior to starting tofacitinib and 1 and 6 months afterwards. Muscle biopsy will be performed before and 6 months after starting tofacitinib. The primary outcome will be lower limb muscle volume changes following treatment initiation. The RAMUS Study will investigate whether muscle health improves following tofacitinib treatment for RA. Identifying a potential pharmacological treatment for sarcopenia could have important implications for individuals with RA and for older people in general. ISRCTN registry ID: 13364395., (Copyright: © 2023 Hylonome Publications.)

Background: Granulocyte-macrophage colony-stimulating factor (GM-CSF) and dysregulated myeloid cell responses are implicated in the pathophysiology and severity of COVID-19., Methods: In this randomised, sequential, multicentre, placebo-controlled, double-blind study, adults aged 18-79 years (Part 1) or ≥70 years (Part 2) with severe COVID-19, respiratory failure and systemic inflammation (elevated C-reactive protein/ferritin) received a single intravenous infusion of otilimab 90 mg (human anti-GM-CSF monoclonal antibody) plus standard care (NCT04376684). The primary outcome was the proportion of patients alive and free of respiratory failure at Day 28., Results: In Part 1 (n=806 randomised 1:1 otilimab:placebo), 71% of otilimab-treated patients were alive and free of respiratory failure at Day 28 versus 67% who received placebo; the model-adjusted difference of 5.3% was not statistically significant (95% CI -0.8-11.4%, p=0.09). A nominally significant model-adjusted difference of 19.1% (95% CI 5.2-33.1%, p=0.009) was observed in the predefined 70-79 years subgroup, but this was not confirmed in Part 2 (n=350 randomised) where the model-adjusted difference was 0.9% (95% CI -9.3-11.2%, p=0.86). Compared with placebo, otilimab resulted in lower serum concentrations of key inflammatory markers, including the putative pharmacodynamic biomarker CC chemokine ligand 17, indicative of GM-CSF pathway blockade. Adverse events were comparable between groups and consistent with severe COVID-19., Conclusions: There was no significant difference in the proportion of patients alive and free of respiratory failure at Day 28. However, despite the lack of clinical benefit, a reduction in inflammatory markers was observed with otilimab, in addition to an acceptable safety profile., Competing Interests: Conflict of interest: J. Patel, D. Bass, A. Cahn, K. Davy, S. Fernandes, A. Gupta, K. Hanrott, D. Inman, E. Jarvis, D. Lakshminarayanan, S. Mukherjee, C. O'Shea, L. Schifano, J.E. Smith, R. Williamson and M. Layton are shareholders and/or employees of GSK. A. Beishuizen, X. Bocca Ruiz, H. Boughanmi, H. Colombo, G.J. Criner, J. de-Miguel-Díez, P.A. Doreski, B. François, T. Hatlen, J.D. Isaacs, N. Kostina, T. Kropotina, J-C. Lacherade, P. Martinez-Ayala, C. McEvoy, F. Meziani, M. Monchi, R. Muñoz-Bermúdez, G. Plantefeve, L.E. Schwab, Z. Shahid, M. Shirano, E. Sprinz, C. Summers, N. Terzi and Y. Trefilova were investigators in the OSCAR trial, which was funded by GSK. X. Bocca Ruiz has served as a clinical trial investigator for AstraZeneca and Zambon. B. François reports consultancy fees with GSK, Enlivex, Inotrem, Takeda, Aridis, Transgene, AM-Pharma, Asahi-Kasai and Biomérieux within the past 36 months. R. Muñoz-Bermúdez has participated on an advisory board for GSK. J.D. Isaacs has received research funding from GSK, Janssen and Pfizer, and personal fees from AbbVie, BMS, Gilead, Roche and UCB, all outside the submitted work, as well as support for event attendance from Eli Lilly and Gilead. A. Beishuizen has received consultancy fees from GSK. C. McEvoy has received research funding from the National Institutes of Health, US Department of Defense, Patient-Centered Outcomes Research Institute, GSK and AstraZeneca. C. Summers’ institution has received research funding from GSK, AstraZeneca, the Wellcome Trust, The Medical Research Council and National Institute for Health Research to support her work outside the area of the submitted manuscript. C. Summers has received personal fees from AbbVie, Roche and GSK. G.J. Criner has received research grants from ALung Technologies Inc., American College of Radiology, American Lung Associations, AstraZeneca, BioScale Inc., Boehringer Ingelheim, BREATH Therapeutics Inc., COPD Foundation, Coridea/ZIDAN, Corvus, Dr Karen Burns of St Michael's Hospital, Fisher & Paykel Healthcare Ltd, Galapagos NV, GSK, Kinevent, Lungpacer Medical Inc., National Heart Lung and Blood Institute, Nurvaira Inc., Patient-Centered Outcomes Research Institute, Pulmonary Fibrosis Foundation, PulmonX, Respironics Inc., Respivant Sciences, Spiration Inc., Steward St Elizabeth's Medical Center of Boston Inc. and Veracyte Inc.; and received personal fees from Amgen, AstraZeneca, Boehringer Ingelheim, Broncus Medical, CSA Medical, EOLO Medical, Gala Therapeutics, GSK, Helios Medical, Ion, Merck, Medtronic, Mereo BioPharma, NGM Biopharmaceuticals, Novartis, Olympus, PulmonX, Respironics Inc., Respivant Sciences, The Implementation Group and Verona Pharma. J. Neisen is an employee and shareholder of AstraZeneca, and a shareholder and former employee of GSK. L.E. Schwab reports holding shares in Johnson & Johnson and BMS, and participated on the Holy Cross Health Institutional Review Board. Z. Shahid has received research funding from Karyopharm. M. Shirano is an investigator in separate trials funded by Roche and AstraZeneca, and has received payment for lectures from Gilead Sciences. E. Sprinz participates on a data safety monitoring board/advisory board for, and has received consulting fees and honoraria from, GSK, Janssen and Gilead. M.A. Tidswell received a fee for serving on the independent data monitoring committee for this study, as well as for serving on a data safety monitoring board/advisory board for Spectral Diagnostics Inc., ReAlta Life Sciences Inc., Celltrion Inc., AstraZeneca and Molecular Partners AG. Additionally, M.A. Tidswell has held a research contract with Edesa Biotech Research Inc., RevImmune SAS, Spectral Diagnostics, Beyond Air Inc., National Institutes of Health and National Heart, Lung, and Blood Institute. D. Wyncoll received a fee for serving on the independent data monitoring committee for this study, has served as a study adjudicator for AstraZeneca, and reports consulting fees and/or honoraria from Gilead and Shionogi. J. de-Miguel-Díez, H. Boughanmi, J-C. Lacherade, P. Martinez-Ayala, T. Hatlen, G. Plantefeve, N. Terzi, M. Shirano, N. Kostina, T. Kropotina, Y. Trefilova and M. Monchi have no other conflicts of interest to declare., (Copyright ©The authors 2023.)

Objective: To develop EULAR points-to-consider for therapeutic drug monitoring (TDM) of biopharmaceuticals in inflammatory rheumatic and musculoskeletal diseases (RMDs)., Methods: The points-to-consider were developed in accordance with EULAR standardised operation procedures by a multidisciplinary task force from eight European countries, based on a systematic literature review and expert consensus. Level of evidence and strength of the points-to-consider were determined, and mean levels of agreement among the task force were calculated using a 10-point rating scale., Results: Six overarching principles and 13 points-to-consider were formulated. The level of agreement among the task force for the overarching principles and points-to-consider ranged from 8.4 to 9.9.The overarching principles define TDM and its subtypes, and reinforce the underlying pharmacokinetic/pharmacodynamic principles, which are relevant to all biopharmaceutical classes. The points-to-consider highlight the clinical utility of the measurement and interpretation of biopharmaceutical blood concentrations and antidrug antibodies in specific clinical scenarios, including factors that influence these parameters. In general, proactive use of TDM is not recommended but reactive TDM could be considered in certain clinical situations. An important factor limiting wider adoption of TDM is the lack of both high quality trials addressing effectiveness and safety of TDM and robust economic evaluation in patients with RMDs. Future research should focus on providing this evidence, as well as on further understanding of pharmacokinetic and pharmacodynamic characteristics of biopharmaceuticals., Conclusion: These points-to-consider are evidence-based and consensus-based statements for the use of TDM of biopharmaceuticals in inflammatory RMDs, addressing the clinical utility of TDM., Competing Interests: Competing interests: AvT: has received unrestricted research grants from Pfizer, Abbvie, Novartis, UCB and Biogen and consultancy fees from Novartis; AB: has received Grant/research support, fees for consultancies or as a speaker from Abbvie, Amgen, Pfizer, Novartis, BMS, Nordic, Sanofi, Sandoz, Lilly, UCB, Roche; GLG: has acted as a consultant or received speakers fees from AbbVie, Boehringer-Mannheim, Eli Lilly, Novartis, Orion Pharma, Pfizer, Roche and UCB; MJ: has received travel expenses from Abbvie and speakers fees from Grifols in the last 5 years; PDWK: consultancy/speaker fees/sponsorship from Abbvie, Gilead, Lilly, Novartis, Sanofi, Sobi; DM: has acted as a consultant and given lectures on behalf of his institution for Pfizer, Novartis, Grifols; he has been invited to attend an international congress by Janssen-Cilag. His institution received grants for research from the non-governmental organisation Lions Club Tours Val de France; VN-C: has received research grants/honoraria from AbbVie, Janssen, Lilly, Novartis, Pfizer, and UCB; MP: speaker or consultancy from Abbvie, Celltrion, Gilead, Lilly, Biogen Janssen- Cilag. Unrestricted educational grants Abbvie, Celgene, Lilly, Roche, Grifols, Biogen; SRS: has received consulting/speaker’s fees from 67 Health, Ampersand Health, Envision Pharma Group, Janssen, and On The Pulse Consultancy, and is an employee of Envision Pharma Group, unrelated to the work presented in this manuscript; JDI: grant income from Pfizer, GSK, Janssen and consultancy/speaker fees/sponsorship from Abbvie, BMS, Gilead, Roche, UCB., (© Author(s) (or their employer(s)) 2023. No commercial re-use. See rights and permissions. Published by BMJ.)

Aims and Method: This paper analyses how practice varied between patients aged <65 and ≥65 years in the 2019 UK national memory service audit., Results: Data on 3959 patients were analysed. Those aged <65 (7% of the sample) were less likely than those aged ≥65 to be diagnosed with dementia (23 v. 67%) and more likely to receive a functional, psychiatric or no diagnosis. Younger patients were more likely to have magnetic resonance imaging; use of dementia biomarkers was low in both groups. Frontotemporal dementia and functional cognitive disorder were diagnosed infrequently. Use of dementia navigators/advisors and carer psychoeducation was similar between groups; younger patients were less likely to be offered but more likely to accept cognitive stimulation therapy., Clinical Implications: Memory services seeing younger people need expertise in functional cognitive disorder, alongside clinical skills and technologies to diagnose rarer forms of dementia. Further work is needed to understand why cognitive stimulation therapy is less frequently offered to younger people.

The first EULAR provisional recommendations on the management of rheumatic and musculoskeletal diseases (RMDs) in the context of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), largely based on expert opinion, were published in June 2020. Since then, an unprecedented number of clinical studies have accrued in the literature. Several SARS-CoV-2 vaccines have been approved for population-wide vaccination programmes in EULAR-affiliated countries. Studies regarding vaccination of patients with (inflammatory) RMDs have released their first results or are underway.EULAR found it opportune to carefully review to what extent the initially consensus expert recommendations stood the test of time, by challenging them with the recently accumulated body of scientific evidence, and by incorporating evidence-based advice on SARS-CoV-2 vaccination. EULAR started a formal (first) update in January 2021, performed a systematic literature review according to EULAR's standard operating procedures and completed a set of updated overarching principles and recommendations in July 2021. Two points to consider were added in November 2021, because of recent developments pertaining to additional vaccination doses., Competing Interests: Competing interests: RBML received honoraria for lecturing and consultation from AbbVie, Amgen, BMS, Celgene, Galapagos, Gilead, Janssen, Eli Lilly, Novartis, Pfizer, UCB, is chair of EULAR’s committee for the quality of care and is owner and director of Rheumatology Consultancy BV. RBML is chair of EULAR’s committee of quality of care. AN received honoraria for lectures and consulting form BMS, UCB, Chigai and Roche. JWJB received honoraria for lectures and consulting from Fresnius, Galapagos, Syneos. GRB received honoraria for lectures and consulting from AbbVie, Amgen, BMS, Gilead, Janssen, Lilly, Novartis, Pfizer, Sanofi-Aventis, Roche, UCB. RC received honoraria for lectures from AbbVie, Janssen, Roche, Sanofi. BC received honoraria for lecturing and consultation from AbbVie, BMS, Celltrion, Galapagos, Gilead, Janssen, Eli Lilly, Merck, Novartis, Pfizer, Roche-Chugai. RC received honoraria for lectures and consulting or travel support from AbbVie, Janssen, Nordic Pharma, Roche and Sanofi. JRC received research grants and consulting from Amgen, AbbVie, BMS, GSK, Janssen, Lilly, Novartis, Pfizer, and chairs the ACR COVID Vaccine Guidance Task Force. OE received honoraria for lecturing and consultation from AbbVie, BMS, Celgene, Gilead, Janssen, Eli Lilly, Novartis, Pfizer and B.I. MWH Consultation and speaker’s fees from ALK and Roche. LH received a speaker’s fee from Grünenthal, honoraria for writing articles from MedMedia, and travel support from AbbVie, Biogen, BMS, MSD, Novartis and Roche. AI received consultancies, honoraria, speaker-fees from AbbVie, MSD, Alfasigma, Celltrion, BMS, Celgene, Eli Lilly, Sanofi, Genzyme, Pfizer, Galapagos, Gilead, Novartis, SOBI and research grants from MSD, Alfasigma, AbbVie. AI is acting president of EULAR. JDI received research grants from Pfizer, Janssen and GSK and honoraria for lectures, conference support from Eli Lilly and Gilead, and speaker/consulting fees from AbbVie, Gilead, Roche and UCB. XM received consulting fees from BMS, Gilead, Janssen, Pfizer, Samsung, UCB. BC received honoraria from AbbVie, BMS, Gilead, Janssen, Lilly, Merck, Novartis, Pfizer, Roche-Chugai, Sanofi and UCB; and research grants from Novartis, Pfizer, and Roche. IBM received research grants from Lilly, Pfizer, BMS, Celgene, Janssen; and consulting fees from AbbVie, BMS, Celgene, Gilead, Janssen, Lilly, Novartis, Pfizer, Sanofi-Aventis and UCB. IBM is past president of EULAR. HS-K received honoraria for lectures and consulting from AbbVie, Amgen, BMS, Gilead, Janssen, Lilly, Novartis, Pfizer, Sanofi-Aventis, Roche and UCB. JSS received grants to his institution from AbbVie, AstraZeneca, Janssen, Lilly, MSD, Pfizer and Roche and provided expert advice for, or had symposia speaking engagements with, AbbVie, Amgen, AstraZeneca, Astro, Bristol Myers Squibb, Celgene, Celltrion, Chugai, Gilead, ILTOO Pharma, Janssen, Lilly, MSD, Novartis-Sandoz, Pfizer, Roche, Samsung, Sanofi and UCB. JSS is editor of the Annals of Rheumatic Diseases. KW received honoraria and consultancy fees from AbbVie, Lilly, Roche, GSK, Novartis, BMS, Pfizer, UCB, Janssen, Regeneron and Sanofi. VN-C received research grants/honoraria from AbbVie, Janssen, Lilly, Novartis, Pfizer, and UCB. PMM received consulting/speaker’s fees from AbbVie, BMS, Celgene, Eli Lilly, Galapagos, Janssen, MSD, Novartis, Pfizer, Roche and UCB, all unrelated to this manuscript., (© Author(s) (or their employer(s)) 2022. No commercial re-use. See rights and permissions. Published by BMJ.)

For many oncological conditions, the application of timely and patient-tailored targeted therapies, or precision medicine, is a major therapeutic development that has provided considerable clinical benefit. However, despite the application of increasingly sophisticated technologies, alongside advanced bioinformatic and machine-learning algorithms, this success is yet to be replicated for the rheumatic diseases. In rheumatoid arthritis, for example, despite an array of targeted biologic and conventional therapeutics, treatment choice remains largely based on trial and error. The concept of the 'precision gap' for rheumatic disease can help us to identify factors that underpin the slow progress towards the discovery and adoption of precision-medicine approaches for rheumatic disease. In a rheumatic disease such as rheumatoid arthritis, it is possible to identify four themes that have slowed progress, solutions to which should help to close the precision gap. These themes relate to our fundamental understanding of disease pathogenesis, how we determine treatment response, confounders of treatment outcomes and trial design., (© 2022. Springer Nature Limited.)

Background: Rituximab is widely used to treat autoimmunity but clinical response varies. Efficacy is determined by the efficiency of B-cell depletion, which may depend on various Fc gamma receptor (FcγR)-dependent mechanisms. Study of FcγR is challenging due to the complexity of the FCGR genetic locus. We sought to assess the effect of FCGR variants on clinical response, B-cell depletion and NK-cell-mediated killing in rheumatoid arthritis (RA) and systemic lupus erythematosus (SLE)., Methods: A longitudinal cohort study was conducted in 835 patients [RA = 573; SLE = 262]. Clinical outcome measures were two-component disease activity score in 28-joints (2C-DAS28CRP) for RA and British Isles Lupus Assessment Group (BILAG)-2004 major clinical response (MCR) for SLE at 6 months. B-cells were evaluated by highly-sensitive flow cytometry. Single nucleotide polymorphism and copy number variation for genes encoding five FcγRs were measured using multiplex ligation-dependent probe amplification. Ex vivo studies assessed NK-cell antibody-dependent cellular cytotoxicity (ADCC) and FcγR expression., Findings: In RA, carriage of FCGR3A-158V and increased FCGR3A-158V copies were associated with greater 2C-DAS28CRP response (adjusted for baseline 2C-DAS28CRP). In SLE, MCR was associated with increased FCGR3A-158V, OR 1.64 (95% CI 1.12-2.41) and FCGR2C-ORF OR 1.93 (95% CI 1.09-3.40) copies. 236/413 (57%) patients with B-cell data achieved complete depletion. Homozygosity for FCGR3A-158V and increased FCGR3A-158V copies were associated with complete depletion in combined analyses. FCGR3A genotype was associated with rituximab-induced ADCC, and increased NK-cell FcγRIIIa expression was associated with improved clinical response and depletion in vivo. Furthermore, disease status and concomitant therapies impacted both NK-cell FcγRIIIa expression and ADCC., Interpretation: FcγRIIIa is the major low affinity FcγR associated with rituximab response. Increased copies of the FCGR3A-158V allele (higher affinity for IgG1), influences clinical and biological responses to rituximab in autoimmunity. Enhancing FcγR-effector functions could improve the next generation of CD20-depleting therapies and genotyping may stratify patients for optimal treatment protocols., Funding: Medical Research Council, National Institute for Health and Care Research, Versus Arthritis., Competing Interests: Declaration of interests Prof Bruce has received research grants from GSK, consulting fees from GSK, UCB, Eli Lilly & Co, BMS, Aurinia, IL-TOO and AstraZeneca and speaker fees from AstraZeneca, GSK and UCB within the last 3 years. Dr Vital has received honoraria and consulting fees from Roche within the last 3 years. All other authors declare no competing interest related to the work described in this manuscript., (Copyright © 2022 The Authors. Published by Elsevier B.V. All rights reserved.)

Introduction: There are few randomized clinical trials in vascular cognitive impairment (VCI). This trial tested the hypothesis that the PDE5 inhibitor tadalafil, a widely used vasodilator, increases cerebral blood flow (CBF) in older people with symptomatic small vessel disease, the main cause of VCI., Methods: In a double-blind, placebo-controlled, cross-over trial, participants received tadalafil (20 mg) and placebo on two visits ≥7 days apart (randomized to order of treatment). The primary endpoint, change in subcortical CBF, was measured by arterial spin labelling., Results: Tadalafil increased CBF non-significantly in all subcortical areas (N = 55, age: 66.8 (8.6) years) with greatest treatment effect within white matter hyperintensities (+9.8%, P = .0960). There were incidental treatment effects on systolic and diastolic blood pressure (-7.8, -4.9 mmHg; P < .001). No serious adverse events were observed., Discussion: This trial did not identify a significant treatment effect of single-administration tadalafil on subcortical CBF. To detect treatment effects may require different dosing regimens., (© 2022 The Authors. Alzheimer's & Dementia published by Wiley Periodicals LLC on behalf of Alzheimer's Association.)

Background: No reliable biomarkers to predict response to TNF inhibitors (TNFi) in RA patients currently exist. The aims of this study were to replicate changes in gene co-expression modules that were previously reported in response to TNFi therapy in RA; to test if changes in module expression are specific to TNFi therapy; and to determine whether module expression transitions towards a disease-free state in responding patients., Method: Published transcriptomic data from the whole blood of disease-free controls (n = 10) and RA patients, treated with the TNFi adalimumab (n = 70) or methotrexate (n = 85), were studied. Treatment response was assessed using the EULAR response criteria following 3 or 6 months of treatment. Change in transcript expression between pre- and post-treatment was recorded for previously defined modules. Linear mixed models tested whether modular expression after treatment transitioned towards a disease-free state., Results: For 25 of the 27 modules, change in expression between pre- and post-treatment in the adalimumab cohort replicated published findings. Of these 25 modules, six transitioned towards a disease-free state by 3 months (P < 0.05), irrespective of clinical response. One module (M3.2), related to inflammation and TNF biology, significantly correlated with response to adalimumab. Similar patterns of modular expression, with reduced magnitude, were observed in the methotrexate cohort., Conclusion: This study provides independent validation of changes in module expression in response to therapy in RA. However, these effects are not specific to TNFi. Further studies are required to determine whether specific modules could assist molecular classification of therapeutic response., (© The Author(s) 2022. Published by Oxford University Press on behalf of the British Society for Rheumatology.)

Objectives: Control of disease activity in RA is a crucial part of its management to prevent long-term joint damage and disability. This study aimed to identify early predictors of poor disease activity at 5 and 10 years, focusing on comorbidities and clinical/sociodemographic factors at first presentation., Methods: Patients from two UK-based RA cohorts were classified into two groups; low (&lt;3.2) and moderate/high (≥3.2) DAS using 28 joint counts (DAS28) at 5/10 years. Clinical variables (e.g. rheumatoid nodules, erosions), sociodemographic factors (e.g. ethnicity, deprivation) and comorbidities were recorded at baseline and yearly thereafter. The Rheumatic Diseases Comorbidity Index quantified patient comorbidity burden. Binary logistic regression models (outcome low vs moderate/high DAS28) were fitted using multiple imputation., Results: A total of 2701 patients living with RA were recruited (mean age 56.1 years, 66.9% female); 5-year data were available for 1718 (63.4%) patients and 10-year data for 820 (30.4%). Baseline Rheumatic Diseases Comorbidity Index was not associated with DAS28 at 5 [odds ratio (OR) 1.05, 95% CI 0.91, 1.22] or 10 years (OR 0.99, 95% CI 0.75, 1.31) in multivariable analyses. Sociodemographic factors (female gender, worse deprivation) and poorer baseline HAQ-Disability Index were associated with DAS28 ≥3.2 at both timepoints. Being seropositive was associated with 5-year DAS28 ≥3.2., Conclusion: This study demonstrates an association between sociodemographic and clinical factors and long-term RA disease activity, in models adjusting for comorbidity burden. The findings call for more holistic and targeted patient management in patients with RA and provide insights for more individualized management plans even on first presentation to rheumatology., (© The Author(s) 2022. Published by Oxford University Press on behalf of the British Society for Rheumatology.)

Tolerogenic dendritic cell (tolDC) therapies aim to restore self-tolerance in patients suffering from autoimmune diseases. Phase 1 clinical trials with tolDC have shown the feasibility and safety of this approach, but have also highlighted a lack of understanding of their distribution in vivo . Fluorine-19 magnetic resonance imaging ( 19 F-MRI) promises an attractive cell tracking method because it allows for detection of 19 F-labelled cells in a non-invasive and longitudinal manner. Here, we tested the suitability of nanoparticles containing 19 F ( 19 F-NP) for labelling of therapeutic human tolDC for detection by 19 F-MRI. We found that tolDC readily endocytosed 19 F-NP with acceptable effects on cell viability and yield. The MRI signal-to-noise ratios obtained are more than sufficient for detection of the administered tolDC dose (10 million cells) at the injection site in vivo , depending on the tissue depth and the rate of cell dispersal. Importantly, 19 F-NP labelling did not revert tolDC into immunogenic DC, as confirmed by their low expression of typical mature DC surface markers (CD83, CD86), low secretion of pro-inflammatory IL-12p70, and low capacity to induce IFN-γ in allogeneic CD4 + T cells. In addition, the capacity of tolDC to secrete anti-inflammatory IL-10 was not diminished by 19 F-NP labelling. We conclude that 19 F-NP is a suitable imaging agent for tolDC. With currently available technologies, this imaging approach does not yet approach the sensitivity required to detect small numbers of migrating cells, but could have important utility for determining the accuracy of injecting tolDC into the desired target tissue and their efflux rate., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. The reviewer PR declared participation with the authors in the INSTRuCT Consortium to the handling editor., (Copyright © 2022 Cooke, Neal, Wood, de Vries, Anderson, Diboll, Pratt, Stanway, Nicorescu, Moyse, Hiles, Caulfield, Dickinson, Blamire, Thelwall, Isaacs and Hilkens.)

Objectives: An interferon (IFN) gene signature (IGS) is present in approximately 50% of early, treatment naive rheumatoid arthritis (eRA) patients where it has been shown to negatively impact initial response to treatment. We wished to validate this effect and explore potential mechanisms of action., Methods: In a multicentre inception cohort of eRA patients (n=191), we examined the whole blood IGS ( MxA, IFI44L, OAS1, IFI6, ISG15 ) with reference to circulating IFN proteins, clinical outcomes and epigenetic influences on circulating CD19+ B and CD4+ T lymphocytes., Results: We reproduced our previous findings demonstrating a raised baseline IGS. We additionally showed, for the first time, that the IGS in eRA reflects circulating IFN-α protein. Paired longitudinal analysis demonstrated a significant reduction between baseline and 6-month IGS and IFN-α levels (p<0.0001 for both). Despite this fall, a raised baseline IGS predicted worse 6-month clinical outcomes such as increased disease activity score (DAS-28, p=0.025) and lower likelihood of a good EULAR clinical response (p=0.034), which was independent of other conventional predictors of disease activity and clinical response. Molecular analysis of CD4+ T cells and CD19+ B cells demonstrated differentially methylated CPG sites and dysregulated expression of disease relevant genes, including PARP9, STAT1, and EPSTI1 , associated with baseline IGS/IFNα levels. Differentially methylated CPG sites implicated altered transcription factor binding in B cells (GATA3, ETSI, NFATC2, EZH2) and T cells (p300, HIF1α)., Conclusions: Our data suggest that, in eRA, IFN-α can cause a sustained, epigenetically mediated, pathogenic increase in lymphocyte activation and proliferation, and that the IGS is, therefore, a robust prognostic biomarker. Its persistent harmful effects provide a rationale for the initial therapeutic targeting of IFN-α in selected patients with eRA., Competing Interests: Competing interests: JDI discloses research grants from Pfizer, Janssen and GSK; conference support from Eli Lilly and Gilead; speaker/consulting fees from AbbVie, BMS, Gilead, Roche and UCB. FAHC discloses speaker fees from AstraZeneca.The remaining authors have no competing interests., (© Author(s) (or their employer(s)) 2022. Re-use permitted under CC BY. Published by BMJ.)

Cerebral small vessel disease (SVD) is common in older people and is associated with lacunar stroke, white matter hyperintensities (WMH) and vascular cognitive impairment. Cerebral blood flow (CBF) is reduced in SVD, particularly within white matter.Here we quantified test-retest reliability in CBF measurements using pseudo-continuous arterial spin labelling (pCASL) in older adults with clinical and radiological evidence of SVD (N=54, mean (SD): 66.9 (8.7) years, 15 females/39 males). We generated whole-brain CBF maps on two visits at least 7 days apart (mean (SD): 20 (19), range 7-117 days).Test-retest reliability for CBF was high in all tissue types, with intra-class correlation coefficient [95%CI]: 0.758 [0.616, 0.852] for whole brain, 0.842 [0.743, 0.905] for total grey matter, 0.771 [0.636, 0.861] for deep grey matter (caudate-putamen and thalamus), 0.872 [0.790, 0.923] for normal-appearing white matter (NAWM) and 0.780 [0.650, 0.866] for WMH (all p<0.001). ANCOVA models indicated significant decline in CBF in total grey matter, deep grey matter and NAWM with increasing age and diastolic blood pressure (all p<0.001). CBF was lower in males relative to females (p=0.013 for total grey matter, p=0.004 for NAWM).We conclude that pCASL has high test-retest reliability as a quantitative measure of CBF in older adults with SVD. These findings support the use of pCASL in routine clinical imaging and as a clinical trial endpoint.All data come from the PASTIS trial, prospectively registered at: https://eudract.ema.europa.eu (2015-001235-20, registered 13/05/2015), http://www.clinicaltrials.gov (NCT02450253, registered 21/05/2015)., (© 2021. The Author(s).)

Objectives: Evidence suggests that factors beyond disease activity associate with functional disability in RA. The primary study objective was to explore associations between comorbidities, sociodemographic factors and functional outcomes at five and 10 years., Methods: RA patients from two UK prospective cohorts were grouped into low (<1.5) and high (≥1.5) five- and 10-year health assessment questionnaire (HAQ) score. Clinical variables (e.g. disease activity, rheumatoid nodules, erosions) and sociodemographic factors (e.g. ethnicity, deprivation) were recorded at baseline and yearly thereafter. Comorbidity was measured using the Rheumatic Diseases Comorbidity Index (RDCI). Binary logistic regression models were fitted using multiple imputation., Results: In total, 2701 RA patients were recruited (mean age 56.1 years, 66.9% female). A total of 1718 (63.4%) had five-year and 820 (30.4%) 10-year follow-up data. In multivariable analysis, no association was found between RDCI and HAQ ≥ 1.5 at five or 10 years. Sociodemographic factors (increased age at disease onset, female gender, minority ethnicity) were associated with higher odds of HAQ ≥ 1.5 at five and 10 years, with worse deprivation additionally associated with HAQ ≥ 1.5 at 10 years (OR 0.79, 95% CI: 0.69, 0.90)., Conclusion: Comorbidities at baseline have not been found to be associated with worse RA functional outcome in the long-term. On the other hand, sociodemographic factors, independently of disease measures, are associated with worse functional outcome in RA at five and 10 years, in models adjusting for comorbidity burden. Tailoring management interventions according to not only clinical disease parameters but also patient sociodemographic factors may improve long-term outcomes including functional disability., (© The Author(s) 2021. Published by Oxford University Press on behalf of the British Society for Rheumatology.)