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Objectives: Some studies have reported a possible association between exposure to tumour necrosis factor (TNF) inhibitors and an increased risk of melanoma. The aim of this study was to investigate the incidence of invasive cutaneous melanomas in patients with rheumatoid arthritis (RA) treated with TNF inhibitors (TNFi), other biologic disease modifying drugs and non-biologic therapy.Methods: Eleven biologic registers from nine European countries participated in this collaborative project. According to predefined exposure definitions, cohorts of patients with RA were selected. Using the country-specific general population of each register as reference, age, sex and calendar year standardised incidence ratios (SIRs) of invasive histology-confirmed cutaneous melanoma were calculated within each register. Pooled SIR and incidence rate ratios (IRRs) comparing biologic cohorts to biologic-naïve were calculated across countries by taking the size of the register into account.Results: Overall 130 315 RA patients with a mean age of 58 years contributing 579 983 person-years were available for the analysis and 287 developed a first melanoma. Pooled SIRs for biologic-naïve, TNFi and rituximab-exposed patients were 1.1 (95% CI 0.9 to 1.4), 1.2 (0.99 to 1.6) and 1.3 (0.6 to 2.6), respectively. Incidence rates in tocilizumab and abatacept-exposed patients were also not significantly increased. IRR versus biologic-naïve patients were: TNFi 1.1 (95% CI 0.8 to 1.6); rituximab 1.2 (0.5 to 2.9).Conclusions: This large European collaborative project did not confirm an overall increased risk of melanoma following exposure to TNFi. [ABSTRACT FROM AUTHOR]

Objective To develop and validate an international set of classification criteria for primary Sjögren's syndrome (SS) using guidelines from the American College of Rheumatology (ACR) and the European League Against Rheumatism (EULAR). These criteria were developed for use in individuals with signs and/or symptoms suggestive of SS. Methods We assigned preliminary importance weights to a consensus list of candidate criteria items, using multi-criteria decision analysis. We tested and adapted the resulting draft criteria using existing cohort data on primary SS cases and non-SS controls, with case/non-case status derived from expert clinical judgment. We then validated the performance of the classification criteria in a separate cohort of patients. Results The final classification criteria are based on the weighted sum of 5 items: anti-SSA/Ro antibody positivity and focal lymphocytic sialadenitis with a focus score of ≥1 foci/4 mm2, each scoring 3; an abnormal ocular staining score of ≥5 (or van Bijsterveld score of ≥4), a Schirmer's test result of ≤5 mm/5 minutes, and an unstimulated salivary flow rate of ≤0.1 ml/minute, each scoring 1. Individuals with signs and/or symptoms suggestive of SS who have a total score of ≥4 for the above items meet the criteria for primary SS. Sensitivity and specificity against clinician-expert-derived case/non-case status in the final validation cohort were high, i.e., 96% (95% confidence interval [95% CI] 92-98%) and 95% (95% CI 92-97%), respectively. Conclusion Using methodology consistent with other recent ACR/EULAR-approved classification criteria, we developed a single set of data-driven consensus classification criteria for primary SS, which performed well in validation analyses and are well-suited as criteria for enrollment in clinical trials. [ABSTRACT FROM AUTHOR]

Objective. To reach a European consensus on the definition and characterization of the main organ-specific extraglandular manifestations in primary SS. Methods. The EULAR-SS Task Force Group steering committee agreed to approach SS-related systemic involvement according to the EULAR SS Disease Activity Index (ESSDAI) classification and proposed the preparation of four separate manuscripts: articular, cutaneous, pulmonary and renal ESSDAI involvement; muscular, peripheral nervous system, CNS and haematological ESSDAI involvement; organs not included in the ESSDAI classification; and lymphoproliferative disease. Currently available evidence was obtained by a systematic literature review focused on SS-related systemic features. Results. The following information was summarized for articular, cutaneous, pulmonary and renal involvement: a clear, consensual definition of the clinical feature, a brief epidemiological description including an estimate of the prevalence reported in the main clinical series and a brief list of the key clinical and diagnostic features that could help physicians clearly identify these features. Unfortunately we found that the body of evidence relied predominantly on information retrieved from individual cases, and the scientific information provided was heterogeneous. The analysis of types of involvement was biased due to the unbalanced reporting of severe cases over non-severe cases, although the main sources of bias were the heterogeneous definitions of organ involvement (or even the lack of definition in some studies) and the heterogeneous diagnostic approach used in studies to investigate involvment of each organ. Conclusion. The proposals included in this article are a first step to developing an optimal diagnostic approach to systemic involvement in primary SS and may pave the way for further development of evidence-based diagnostic and therapeutic guidelines. [ABSTRACT FROM AUTHOR]

In order to address the main challenges related to the rare diseases (RDs) the European Commission launched the European Reference Networks (ERNs), virtual networks involving healthcare providers (HCPs) across Europe. The mission of the ERNs is to tackle low prevalence and RDs that require highly specialised treatment and a concentration of knowledge and resources. In fact, ERNs offer the potential to give patients and healthcare professionals across the EU access to the best expertise and timely exchange of lifesaving knowledge, trying to make the knowledge travelling more than patients. For this reason, ERNs were established as concrete European infrastructures, and this is particularly crucial in the framework of rare and complex diseases in which no country alone has the whole knowledge and capacity to treat all types of patients.It has been five years since their kick-off launch in Vilnius in 2017. The 24 ERNs have been intensively working on different transversal areas, including patient management, education, clinical practice guidelines, patients' care pathways and many other fundamental topics. The present work is therefore aimed not only at reporting a summary of the main activities and milestones reached so far, but also at celebrating the first 5 years of the ERN on Rare and Complex Connective Tissue and Musculo-skeletal Diseases (ReCONNET), in which the members of the network built together one of the 24 infrastructures that are hopefully going to change the scenario of rare diseases across the EU.

Background: Rheumatic and musculoskeletal immune-related adverse events (irAEs) are observed in about 10% of patients with cancer receiving checkpoint inhibitors (CPIs). Given the recent emergence of these events and the lack of guidance for rheumatologists addressing them, a European League Against Rheumatism task force was convened to harmonise expert opinion regarding their identification and management., Methods: First, the group formulated research questions for a systematic literature review. Then, based on literature and using a consensus procedure, 4 overarching principles and 10 points to consider were developed., Results: The overarching principles defined the role of rheumatologists in the management of irAEs, highlighting the shared decision-making process between patients, oncologists and rheumatologists. The points to consider inform rheumatologists on the wide spectrum of musculoskeletal irAEs, not fulfilling usual classification criteria of rheumatic diseases, and their differential diagnoses. Early referral and facilitated access to rheumatologist are recommended, to document the target organ inflammation. Regarding therapeutic, three treatment escalations were defined: (1) local/systemic glucocorticoids if symptoms are not controlled by symptomatic treatment, then tapered to the lowest efficient dose, (2) conventional synthetic disease-modifying antirheumatic drugs, in case of inadequate response to glucocorticoids or for steroid sparing and (3) biological disease-modifying antirheumatic drugs, for severe or refractory irAEs. A warning has been made on severe myositis, a life-threatening situation, requiring high dose of glucocorticoids and close monitoring. For patients with pre-existing rheumatic disease, baseline immunosuppressive regimen should be kept at the lowest efficient dose before starting immunotherapies., Conclusion: These statements provide guidance on diagnosis and management of rheumatic irAEs and aim to support future international collaborations., Competing Interests: Competing interests: MK: honoraria from Abbvie, BMS, Lilly, Novartis, Pfizer; TRDJR: grants from AbbVie, Takeda, UCB, Janssen, GSK and honoraria from Abbvie, Pfizer, Takeda, Lilly, Medimmune, Novartis, GSK, BMS, AstraZeneca, Janssen; XM: honoraria from BMS; COB: grants and honoraria from BMS and honoraria from Genetech/Roche, Sanofi/Regeneron; OL: grant from Gilead and honoraria from BMS, MSD, AstraZeneca, Janssen; JLe: grants from Novartis, Pfizer and honoraria from Abbvie, AstraZeneca, BMS, Celgene, Hospira, Janssen-Cilag, LEO Pharma, Lilly, MSD, Novartis, Pfizer, Roche, Sanofi, UCB; AM: grants from BMS, Merus and honoraria from Merck Serono, Lytix, BMS, Symphogen, Amgen, AZ/Medimmune, Servier, Gritstone, Pierre Fabre, EISAI, Sanofi; TS: honoraria from Pfizer, Lilly, Novartis, BMS, Abbvie, Sanofi; EHC: grants from Biogen, grants and honoraria from Amgen, Bio-Cancer, Roche, UCB, Pfizer, honoraria from Chugai Pharma, Abbvie, BMS, Celgene, Eli Lilly, Janssen, ObsEva, Regeneron, Sanofi, SynAct Pharma, Tonix, Gilead; LT: honoraria from Novartis; KB: grants from Abbvie, Novartis, Rheumaliga Baden-Württemberg and honoraria from MSD, Abbvie, BMS, Janssen, Lilly, Mundipharma, Novartis, Pfizer, Roche, UCB; KV: speaker fees from BMS; JLa: grants from Aveo and Pharmacyclics, grants and honoraria from Achilles Therapeutics, MSD, Nektar, Novartis, Pierre Fabre, Pfizer, Roche/Genetech and Immunocore, honoraria from AstraZeneca, Boston Biomedical, BMS, Eisai, EUSA Pharma, GSK, Ipsen, Imugen, Incyte, iOnctura, Kymab, Merck Serono, Secarna, Vitaccess and Covance; JBAGH: grants from BMS, Novartis and advisory boards and/or lectures for MSD, BMS, Roche, Novartis; J-EG: grants from BMS, UCB, Pfizer, Sanofi and honoraria from BMS, Lilly, Pfizer, Sanofi-Genzyme, UCB., (© Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)

The provisional EULAR recommendations address several aspects of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus, and the disease caused by SARS-CoV-2, COVID-19 and are meant for patients with rheumatic and musculoskeletal diseases (RMD) and their caregivers. A task force of 20 members was convened by EULAR that met several times by videoconferencing in April 2020. The task force finally agreed on five overarching principles and 13 recommendations covering four generic themes: (1) General measures and prevention of SARS-CoV-2 infection. (2) The management of RMD when local measures of social distancing are in effect. (3) The management of COVID-19 in the context of RMD. (4) The prevention of infections other than SARS-CoV-2. EULAR considers this set of recommendations as a 'living document' and a starting point, which will be updated as soon as promising new developments with potential impact on the care of patients with RMD become available., Competing Interests: Competing interests: RBML received honoraria for lecturing and consultation from AbbVie, Amgen, BMS, Celgene, Galapagos, Gilead, Janssen, Eli Lilly, Novartis, Pfizer, UCB and is owner and director of Rheumatology Consultancy BV. PMM received consulting/speaker’s fees from Abbvie, BMS, Celgene, Eli Lilly, Janssen, MSD, Novartis, Pfizer, Roche and UCB and is supported by the National Institute for Health Research (NIHR) University College London Hospitals (UCLH) Biomedical Research Centre (BRC). The views expressed are those of the authors and not necessarily those of the (UK) National Health Service (NHS), the NIHR, or the (UK) Department of Health. LG received research grants from Lilly, Pfizer, Sandoz; and consulting fees from AbbVie, Amgen, BMS, Biogen, Celgene, Janssen, Lilly, Novartis, Pfizer, Sanofi-Aventis and UCB. GRB received honoraria for lectures and consulting from AbbVie, Amgen, BMS, Gilead, Janssen, Lilly, Novartis, Pfizer, Sanofi-Aventis, Roche, 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. 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. JDI received research grants from Pfizer and honoraria for lectures and/or consulting from AbbVie, Amgen, Eli Lilly, Gilead, Merck & Co, Roche and UCB. MG received honoraria for lectures and consulting and grants to his institution: AbbVie, BMS, Gilead, Janssen, Novartis, MSD, AstraZeneca, ViiV. HS-K received honoraria for lectures and consulting from AbbVie, Amgen, BMS, Gilead, Janssen, Lilly, Novartis, Pfizer, Sanofi-Aventis, Roche and UCB. IM 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., (© Author(s) (or their employer(s)) 2020. No commercial re-use. See rights and permissions. Published by BMJ.)

Objectives: To provide an update of the European League Against Rheumatism (EULAR) rheumatoid arthritis (RA) management recommendations to account for the most recent developments in the field., Methods: An international task force considered new evidence supporting or contradicting previous recommendations and novel therapies and strategic insights based on two systematic literature searches on efficacy and safety of disease-modifying antirheumatic drugs (DMARDs) since the last update (2016) until 2019. A predefined voting process was applied, current levels of evidence and strengths of recommendation were assigned and participants ultimately voted independently on their level of agreement with each of the items., Results: The task force agreed on 5 overarching principles and 12 recommendations concerning use of conventional synthetic (cs) DMARDs (methotrexate (MTX), leflunomide, sulfasalazine); glucocorticoids (GCs); biological (b) DMARDs (tumour necrosis factor inhibitors (adalimumab, certolizumab pegol, etanercept, golimumab, infliximab), abatacept, rituximab, tocilizumab, sarilumab and biosimilar (bs) DMARDs) and targeted synthetic (ts) DMARDs (the Janus kinase (JAK) inhibitors tofacitinib, baricitinib, filgotinib, upadacitinib). Guidance on monotherapy, combination therapy, treatment strategies (treat-to-target) and tapering on sustained clinical remission is provided. Cost and sequencing of b/tsDMARDs are addressed. Initially, MTX plus GCs and upon insufficient response to this therapy within 3 to 6 months, stratification according to risk factors is recommended. With poor prognostic factors (presence of autoantibodies, high disease activity, early erosions or failure of two csDMARDs), any bDMARD or JAK inhibitor should be added to the csDMARD. If this fails, any other bDMARD (from another or the same class) or tsDMARD is recommended. On sustained remission, DMARDs may be tapered, but not be stopped. Levels of evidence and levels of agreement were mostly high., Conclusions: These updated EULAR recommendations provide consensus on the management of RA with respect to benefit, safety, preferences and cost., Competing Interests: Competing interests: DA: grants from Abbvie, Novartis, Roche and honoraria from Abbvie, Amgen, Celgene, Lilly, Medac, Merck, Novartis, Pfizer, Roche, Sandoz, Sanofi/Genzyme; MA: honoraria from AbbVie, Astra Zeneca, BMS, Boehringer Ingelheim, Chugai, HEXAL, Lilly, MSD, Novartis, Pfizer, Roche, Sanofi, UCB; JA: grants from Abbvie, BMS, Lilly, Merck, Pfizer, Roche, Samsung Bioepis, UCB; AB: grants from Pfizer, Bristol-Myers Squibb and honoraria from Pfizer, Roche, AbbVie, Bristol-Myers Squibb, UCB, MSD, Novartis, Sanofi, Biogen, Sandoz, Celltrion, Nordic, Gilead; JWJB: honoraria from Lilly, Roche, Sanofi; MB: honoraria from BMS, Teva, Novartis, Pfizer, GSK; AdB: grants from Abbvie, Biogen, Celltrion and honoraria from Abbvie, Biogen, Boehringer-Ingelheim, Celgene, Fresenius, MSD, Roche.MHB has received grants from Pfizer, Roche and UCB and consulting fees from Abbvie, Eli-Lilly, Merck.Serono, Pfizer, Sandoz, Sanofi; GB: grants from Abbvie, Pfizer, Sanofi, UCB and honoraria from Abbvie, Celgene, Gilead, Lilly, MSD, Novartis, Pfizer, Sanofi, Roche. FB: grants from Abbvie, BMS, Horizon, Medac, Pfizer, Roche, Lilly, Sanofi and honoraria from Abbvie, Galapagos, Horizon, Medac, Pfizer, Roche, Sanofi, Janssen, BMS, MSD, Lilly; RC: honoraria from Abbvie, BMS, Celgene, Celltrion, Gilead, Janssen, Lilly MSD, Mundipharma, Novartis-Sandoz, Pfizer, Roche, Sanofi and UCB; MC; honoraria from Abbvie, Astellas, BMS, Lilly, Pfizer and Roche; DDC: no conflict; CC: honoraria from AbbVie, Accord Healthcare, Alfasigma, Berlin Chemie, Egis, Eli Lilly, Ewopharma, Genesis, MSD, Mylan, Novartis, Pfizer, Roche, Sandoz, UCB; MD: grants from Pfizer, Abbvie, UCB, Janssen, Novartis and honoraria from Pfizer, Abbvie, UCB, Janssen, MSD, Novartis, BMS, Celgene, Biogen, Sandoz; CJE: grants from Abbvie, Biogen and honoraria from Abbvie, BMS, Biogen, Celgene, Fresenius, Gilead, Janssen, Lilly, Mundipharma, Pfizer, MSD, Novartis, Roche, Samsung, Sanofi, UCB; PE: grants from AbbVie, Novartis, Samsung, Lilly and honoraria from AbbVie, Novartis, BMS, Gilead, Samsung, Lilly; AF: grants from BMS, Pfizer and honoraria from AB2 BIO, Abbvie, BMS, Lilly, MSD, Pfizer, Roche, Sanofi; LG: grants from Abbvie, BMS, Lilly, UCB and honoraria from Abbvie, Biogen, Celgene, Janssen, Lilly, Novartis, Pfizer, Sanofi-Aventis, UCB; J-EG: grants from BMS, Pfizer and honoraria from Abbvie, BMS, Lilly, Sanofi-Genzyme, Roche, UCB; MLH: grants from Abbvie, Biogen, BMS, Celltrion, MSD, Novartis, Orion, Pfizer, Samsung, UCB; TH: grants from Lilly, Merck, UCB, BMS, Janssen, Pfizer, Sanofi-Aventis, Galapagos, Boeringher and honoraria from Abblynx, BMS, Janssen, Pfizer, Sanofi-Aventis, Crescendo Bioscience, Galapagos, Lilly; AK: honoraria from BMS, Pfizer, Celgene, MSD; MK: no conflicts of interest; RBML: honoraria from AbbVie, BMS, Celgene, Eli-Lilly, Jansen Pharmaceuticals, Galapagos, Novartis, MSD, Pfizer, UCB and Director of Rheumatology Consultancy BV; XM: honoraria from BMS, Gilead, Pfizer, Samsung, UCB; IBM: grants from Astra Zeneca, UCB, BMS, Janssen, GSK, Compugen, Boehringer, Celgene and honoraria from Abbvie, BMS, Janssen, Novartis, UCB, Astra Zeneca, Celgene, Causeway, Lilly, Leo, Novimmune; EM: grants from Pfizer, Lilly, BMS, AbbVie, GSK, Astra and honoraria from Pfizer, BMS, Roche, Lilly, AbbVie, Gemma, Sanofi; TWJH: grants from Eli Lilly, Merck, UCB, BMS, Janssen, Pfizer, Sanofi-Aventis, Galapagos, Boehringer and honoraria from Abblynx, Abbvie, BMS, Boehringer, Crescendo-Bioscience, Epirus, Galapagos, Janssen, Lilly, Merck, Novartis, Nycomed, Pfizer, Roche, Sanofi-Aventis, Takeda, UCB; ZL: no conflicts of interest; UM-L: honoraria from Abbvie, BMS, MSD, Chugai, Roche, Pfizer, Sanofi, Boehringer, Actelion, Medac, Lilly; GP: no conflicts of interest; JP: grants from BMS, Merck, UCB and honoraria from AbbVie, Actelion, Amgen, BMS, Bayer, GSK, Lilly, Merck, Novartis, Pfizer, Roche, Sandoz, Sanofi, UCB; AR-R: honoraria from Abbvie, Chugai, BMS, Sanofi, Roche, Lilly, Janssen, Novartis, Celgene, MSD, UCB; AR-W: grants from Pfizer, Abbvie and honoraria from Abbvie, Amgen, BMS, Janssen, Lilly, Medac, Nordic Pharma, Novartis, Pfizer, Roche-Chugai, Sanofi, UCB; KS: grants from Amgen, Ironwood/AstraZeneca, Horizon, SOBI, Takeda and honoraria from AbbVie, Amgen, Ironwood/AstraZeneca, Bayer, Gilead, Horizon, Kowa, Radius, Roche/Genentech, SOBI, Takeda, Teijin; MSV: no conflicts of interest. AS: honoraria from Novartis; JSS: grants from Abbvie, AstraZeneca, Janssen, Lilly, Novartis, Roche and honoraria from Abbvie, Amgen, AstraZeneca, Astro, BMS, Celgene, Celltrion, Chugai, Gilead, ILTOO, Janssen, Lilly, MSD, Novartis-Sandoz, Pfizer, Roche, Samsung, Sanofi, UCB; AS: grants from AbbVie, Bristol-Myers Squibb, Celltrion, Hexal AG Lilly, MSD Sharp & Dome, Pfizer, Roche, Samsung Bioepis, Sanofi-Aventis, UCB and honoraria from AbbVie, BMS, MSD, Pfizer, Roche; TT: grants from AbbVie, Asahikasei, Astellas, AYUMI, Chugai, Daiichi Sankyo, Eisai, Mitsubishi Tanabe, Nipponkayaku, Novartis, Pfizer, Takeda and honoraria from AbbVie, Astellas, Astra Zeneca, BMS, Chugai, Diaichi Sankyo, Eisai, Eli Lilly, GlaxoSmithKline, Janssen, Mitsubishi Tanabe, Nipponkayaku, Novartis, Pfizer, Sanofi, Teijin, Taiho Pharmaceutical, Taisho Pharmaceutical, Takeda, UCB; DvdH: grants from UCB and honoraria from AbbVie, Amgen, Astellas, AstraZeneca, BMS, Boehringer Ingelheim, Celgene, Daiichi, Eli-Lilly, Galapagos, Gilead, GlaxoSmithKline, Janssen, Merck, Novartis, Pfizer, Regeneron, Roche, Sanofi, Takeda, UCB and Director Imaging Rheumatology BV; YvE-H: honoraria from Celgene; RFvV: grants from BMS, GSK, Lilly, UCB and honoraria from AbbVie, AstraZeneca, Biotest, BMS, Celgene, GSK, Janssen, Lilly, Novartis, Pfizer, Roche, UCB; RW: grants from Roche, BMS and honoraria from Celltrion, Galapagos-Gilead; MdW: honoraria from 'Stichting Tools', Janssen-Cilag., (© Author(s) (or their employer(s)) 2020. No commercial re-use. See rights and permissions. Published by BMJ.)

Objective: To develop new classification criteria for systemic lupus erythematosus (SLE) jointly supported by the European League Against Rheumatism (EULAR) and the American College of Rheumatology (ACR)., Methods: This international initiative had four phases. 1) Evaluation of antinuclear antibody (ANA) as an entry criterion through systematic review and meta-regression of the literature and criteria generation through an international Delphi exercise, an early patient cohort, and a patient survey. 2) Criteria reduction by Delphi and nominal group technique exercises. 3) Criteria definition and weighting based on criterion performance and on results of a multi-criteria decision analysis. 4) Refinement of weights and threshold scores in a new derivation cohort of 1,001 subjects and validation compared with previous criteria in a new validation cohort of 1,270 subjects., Results: The 2019 EULAR/ACR classification criteria for SLE include positive ANA at least once as obligatory entry criterion; followed by additive weighted criteria grouped in 7 clinical (constitutional, hematologic, neuropsychiatric, mucocutaneous, serosal, musculoskeletal, renal) and 3 immunologic (antiphospholipid antibodies, complement proteins, SLE-specific antibodies) domains, and weighted from 2 to 10. Patients accumulating ≥10 points are classified. In the validation cohort, the new criteria had a sensitivity of 96.1% and specificity of 93.4%, compared with 82.8% sensitivity and 93.4% specificity of the ACR 1997 and 96.7% sensitivity and 83.7% specificity of the Systemic Lupus International Collaborating Clinics 2012 criteria., Conclusion: These new classification criteria were developed using rigorous methodology with multidisciplinary and international input, and have excellent sensitivity and specificity. Use of ANA entry criterion, hierarchically clustered, and weighted criteria reflects current thinking about SLE and provides an improved foundation for SLE research., (© 2019, American College of Rheumatology.)

Background: Lymphomas comprise a heterogeneous group of malignant diseases with highly variable prognosis. Rheumatoid arthritis (RA) is associated with a twofold increased risk of both Hodgkin's lymphoma (HL) and non-Hodgkin's lymphoma (NHL). It is unknown whether treatment with biologic disease-modifying antirheumatic drugs (bDMARDs) affect the risk of specific lymphoma subtypes., Methods: Patients never exposed to (bionaïve) or ever treated with bDMARDs from 12 European biologic registers were followed prospectively for the occurrence of first ever histologically confirmed lymphoma. Patients were considered exposed to a bDMARD after having received the first dose. Lymphomas were attributed to the most recently received bDMARD., Results: Among 124 997 patients (mean age 59 years; 73.7% female), 533 lymphomas were reported. Of these, 9.5% were HL, 83.8% B-cell NHL and 6.8% T-cell NHL. No cases of hepatosplenic T-cell lymphoma were observed. Diffuse large B-cell lymphoma (DLBCL) was the most frequent B-cell NHL subtype (55.8% of all B-cell NHLs). The subtype distributions were similar between bionaïve patients and those treated with tumour necrosis factor inhibitors (TNFi). For other bDMARDs, the numbers of cases were too small to draw any conclusions. Patients with RA developed more DLBCLs and less chronic lymphocytic leukaemia compared with the general population., Conclusion: This large collaborative analysis of European registries has successfully collated subtype information on 533 lymphomas. While the subtype distribution differs between RA and the general population, there was no evidence of any modification of the distribution of lymphoma subtypes in patients with RA treated with TNFi compared with bionaïve patients., Competing Interests: Competing interests: AR received speaker fees (less than $10 000) from Celgene and Janssen. XM received honorarium (less than $10 000) from BMS, Pfizer and UCB. LD has received speaker fees from UCB and MSD. KH received grant/research support from Pfizer and honoraria (less than $10 000) from Abbvie and Pfizer. AS received speaker fees (less than $10 000) from BMS, MSD, Pfizer, Roche and Sanofi-Aventis. AZ received grant/research support from Abbvie, Amgen, BMS, MSD, Roche, Pfizer and UCB for the German biologics register RABBIT and speaker fees (less than $10 000) from BMS, MSD, Novartis, Pfizer, Roche, Sanofi and UCB. JEG received honorarium (less than $10 000) from Abbvie, BMS, MSD, Pfizer, Roche and UCB. JM received less than $10 000 for honoraria and consultancies from Roche. JZ received honorarium (less than $10 000) from Abbvie and Hospira. FI received personal fees from Actelion, Celgene, Janssen, Pfizer, AbbVie, UCB and MSD outside the submitted work. JA received grant/research support from AstraZeneca, Merck, Lilly and Pfizer, and has received grant support from Abbvie, Pfizer, Merck, Roche, BMS and UCB for the ARTIS register. JL received honoraria (less than $10 000) from Novartis-Sandoz and Pfizer., (© Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2017. All rights reserved. No commercial use is permitted unless otherwise expressly granted.)

Objectives: To validate the two recently developed disease activity indexes for assessment of primary Sjögren's syndrome (SS): the European League Against Rheumatism (EULAR) SS Patient Reported Index (ESSPRI) and the EULAR SS Disease Activity Index (ESSDAI)., Methods: A prospective international 6-month duration validation study was conducted in 15 countries. At each visit, physicians completed ESSDAI, SS disease activity index (SSDAI), Sjögren's Systemic Clinical Activity Index (SCAI) and physician global assessment (PhGA); and patients completed ESSPRI, Sicca Symptoms Inventory (SSI), Profile of Fatigue and Discomfort (PROFAD) and patient global assessment (PGA). Psychometric properties (construct validity, responsiveness and reliability) were evaluated and compared between scores., Results: Of the 395 patients included, 145 (37%) and 251 (64%) had currently active or current or past systemic manifestations, respectively. EULAR scores had higher correlation with the gold standard than other scores (ESSDAI with PhGA: r=0.59; ESSRPI with PGA: r=0.70). Correlations between patient and systemic scores were very low (ranging from 0.07 to 0.29). All systemic scores had similar large responsiveness in improved patients. Responsiveness of patient scores was low but was significantly higher for ESSPRI compared with SSI and PROFAD. Reliability was very good for all scores., Conclusions: ESSDAI and ESSPRI had good construct validity. All scores were reliable. Systemic scores had a large sensitivity to change in patients whose disease activity improves. Patient scores had a small sensitivity to change, however, significantly better for ESSPRI. Systemic and patient scores poorly correlated, suggesting that they are 2 complementary components that should be both evaluated, but separately., (Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.)