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Background: Abrocitinib, a selective JAK 1 inhibitor, was recently approved in Europe. Despite its approval, real‐world data on its efficacy and safety in treating moderate‐to‐severe atopic dermatitis (AD) remains limited. Objectives: This study aimed to evaluate the short‐term effectiveness and safety of abrocitinib in a real‐life setting for patients with moderate‐to‐severe AD. Methods: We conducted a retrospective multicenter study involving adult patients with moderate‐to‐severe AD who started abrocitinib treatment between May 1, 2023, and September 30, 2023, in 15 Spanish hospitals. Treatment doses were 100 or 200 mg daily, based on clinical assessment. Data collection included patient demographics, AD history, comorbidities, previous treatments, and disease severity indicators such as SCORing atopic dermatitis (SCORAD), Eczema Area and Severity Index (EASI), body surface area, and Peak Pruritus NRS scores at baseline, 4, 12, and 24 weeks. Quality of life was measured using the Dermatology Life Quality Index (DLQI), and safety was assessed by monitoring adverse reactions and various biochemical parameters. Results: The cohort comprised 76 patients with an average age of 33.93 years; 57.89% were male. Before abrocitinib, 36.84% were naïve to advanced therapies. The baseline mean scores were SCORAD 47.04, EASI 21.79, and DLQI 15.01. At Week 24, there were significant improvements: EASI was reduced to 2.81, and 70.58% of the patients achieved EASI 75. However, 18.42% discontinued treatment mainly due to inefficacy or adverse effects. The safety profile was favorable, with 22.37% reporting mild adverse events (AEs) and one serious case of cutaneous lymphoma. Conclusions: This first Spanish series assessing abrocitinib in real‐world conditions reveals a significant improvement in AD symptoms and quality of life in a range of severity and prior treatment failures. Abrocitinib was well‐tolerated, with few serious AEs, highlighting its potential as an effective treatment option for AD. [ABSTRACT FROM AUTHOR]

Interleukin (IL)-9 is present in atopic dermatitis (AD) lesions and is considered to be mainly produced by skin-homing T cells expressing the cutaneous lymphocyte-associated antigen (CLA). However, its induction by AD-associated triggers remains unexplored. Circulating skin-tropic CLA+ and extracutaneous/systemic CLA− memory T cells cocultured with autologous lesional epidermal cells from AD patients were activated with house dust mite (HDM) and staphylococcal enterotoxin B (SEB). Levels of AD-related mediators in response to both stimuli were measured in supernatants, and the cytokine response was associated with different clinical characteristics. Both HDM and SEB triggered heterogeneous IL-9 production by CLA+ and CLA− T cells in a clinically homogenous group of AD patients, which enabled patient stratification into IL-9 producers and non-producers, with the former group exhibiting heightened HDM-specific and total IgE levels. Upon allergen exposure, IL-9 production depended on the contribution of epidermal cells and class II-mediated presentation; it was the greatest cytokine produced and correlated with HDM-specific IgE levels, whereas SEB mildly induced its release. This study demonstrates that both skin-tropic and extracutaneous memory T cells produce IL-9 and suggests that the degree of allergen sensitization reflects the varied IL-9 responses in vitro, which may allow for patient stratification in a clinically homogenous population. [ABSTRACT FROM AUTHOR]

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Background: Baricitinib treatment in adults with moderate‐to‐severe atopic dermatitis (AD) has demonstrated rapid improvements in itch as well as AD sign severity and affected body surface area as assessed by the Eczema Area and Severity Index (EASI) total score, whether administered as monotherapy or in combination with topical corticosteroids (TCS). As EASI clinical signs differ in time course and associated antecedents, the effects of baricitinib on each individual clinical sign are of interest. Objectives: In this post hoc analysis, we aimed to investigate the effects of baricitinib on individual EASI subscores, namely excoriation, oedema/papulation, erythema and lichenification, in both monotherapy and TCS combination therapy trials. Methods: We analysed the percent change from baseline in individual EASI subscores from three phase‐III, double‐blind, 16‐week trials of baricitinib in monotherapy (BREEZE‐AD1/BREEZE‐AD2) and TCS combination therapy (BREEZE‐AD7) cohorts via mixed model repeated measures (MMRM). Results: Baricitinib 4 mg showed rapid and sustained improvements in all four clinical signs in both cohorts. Significant effects emerged at week 1 for excoriation, oedema/papulation and erythema scores in monotherapy (p < 0.001) and TCS combination therapy (p < 0.001, p < 0.01, p < 0.001), plateaued at week 4, and remained significant versus placebo through week 16. The effect on lichenification scores also emerged early, at week 1 in monotherapy (p < 0.05) and week 2 in combination therapy (p < 0.001), with scores continuously improving without a clear plateau. Effect magnitude was highest in excoriation scores, exhibiting near‐maximal reduction in week 1 of monotherapy and remaining highest across all timepoints in combination therapy. Conclusions: Rapid and sustained improvements were observed across clinical signs of inflammation and particularly on excoriation following baricitinib treatment. Our findings suggest that selective inhibition of janus kinases 1 and 2 leads to rapid and sustained control of skin inflammation, and that rapid reductions in itch translate into early disruption of the itch‐scratch cycle. [ABSTRACT FROM AUTHOR]

Background: Dupilumab has shown to be an effective and safe treatment for patients with moderate‐to‐severe atopic dermatitis (AD). Objective: To evaluate the predictive factors of response (PRF) in patients with moderate‐to‐severe AD treated with dupilumab. Methods: Observational, retrospective and multicentre study conducted on adult patients diagnosed with moderate‐to‐severe AD treated with dupilumab, with a post‐treatment follow‐up of at least 16 weeks. The primary endpoints were EASI‐75 and the IGA scale at week 52. Results: A total of 198 patients were included in the analysis. Mean age was 38 ± 15.1 years and 116 (58.6%) were men. The most prevalent AD‐predominant phenotypes were flexural eczema (45.3%), head‐and‐neck eczema (18.2%) and erythroderma (17.7%). At week 52, 140 (86.4%) patients achieved EASI‐75 and 119 (93.0%) achieved an improvement in ≥2 points from baseline in IGA score. Women were 3.6 times more likely to achieve EASI‐75 response than men (Odds ratio: 3.58; p = 0.020). While increased body mass index significantly reduced the probability of obtaining an improvement of ≥2 points in the IGA scale at week 52 (odds ratio: 0.88; p = 0.049). Conclusions: Dupilumab was an effective treatment in patients with moderate‐to‐severe AD. Additionally, sex and body mass index were significantly associated with achieving EASI‐75 and an improvement of ≥2 points in the IGA scale, respectively, at week 52. [ABSTRACT FROM AUTHOR]

Background Tralokinumab was recently approved for the treatment of moderate-to-severe atopic dermatitis (AD) and is the first selective interleukin (IL)-13 inhibitor that specifically neutralizes IL-13 with high affinity. Objectives To determine the real-life short-term effectiveness and safety of tralokinumab treatment in patients with moderate-to-severe AD. Methods A multicentre retrospective study was conducted including adult patients with moderate-to-severe AD who started tralokinumab treatment from 1 April to 30 June 2022 in 16 Spanish hospitals. Demographic and disease characteristics, severity and quality of life scales were collected at the baseline visit and at weeks 4 and 16. Results Eighty-five patients were included. Twenty-seven patients (32%) were non-naive to advanced therapy (biological or Janus kinase inhibitors inhibitors). All included patients had severe disease with baseline Eczema Area and Severity Index (EASI) scores of 25.4 (SD 8.1), Dermatology Life Quality Index (DLQI) 15.8 (5.4) and peak pruritus numerical rating scale (PP-NRS) 8.1 (1.8) and 65% had an Investigator's Global Assessment (IGA) of 4. At week 16, there was improvement on all scales. The mean EASI decreased to 7.5 (SD 6.9, 70% improvement), SCORing Atopic Dermatitis improved 64% and PP-NRS, 57%. Also, 82%, 58% and 21% of the patients achieved EASI 50, 75 and 90, respectively. The percentage of EASI 75 responders was significantly higher among the naive vs. non-naive groups (67% vs. 41%). The safety profile was acceptable. Conclusions Patients, with a long history of disease and prior multidrug failure, showed a good response to tralokinumab, confirming clinical trial results. [ABSTRACT FROM AUTHOR]

We present the case of a 63‐year‐old woman who developed dermatomyositis after hematopoietic stem cell transplantation. Anti‐melanoma differentiation‐associated gene 5 (anti‐MDA5) antibodies were positive and pulmonary involvement was severe and progressive. In addition, we also report that the patient's sister and donor also developed dermatomyositis. She had positive anti‐PL7 antibodies and negative anti‐MDA5 antibodies. The occurrence of autoimmune diseases after allogeneic hematopoietic stem cell transplantation is infrequent and difficult to interpret due to the reconstitution of the immune system and the multifactorial origin of most of these diseases. To our knowledge, this is the first described case of a hematopoietic progenitor transplant donor and recipient developing dermatomyositis. These findings make us wonder whether the dermatomyositis in this case is due to a shared genetic predisposition or to the donor's disease developing in the recipient. [ABSTRACT FROM AUTHOR]

Introduction/Background Lebrikizumab (LEB) is a novel monoclonal antibody that binds with high affinity and slow off-rate to interleukin (IL)-13, thereby blocking the downstream effects of IL-13 with high potency. ADvocate1 (NCT04146363) and ADvocate2 (NCT04178967) are identically designed Phase 3 trials that evaluated LEB as a monotherapy treatment for moderate-to-severe atopic dermatitis (AD). Many patients who met the protocol-defined response criteria at Week 16, defined as achieving ≥75% improvement in the Eczema Area and Severity Index (EASI 75) or an Investigator's Global Assessment of 0 or 1 (IGA 0/1) without use of rescue therapy, maintained a deep response up to Week 521. Deep response was defined as maintaining an IGA 0 (clear skin), a 100% improvement in the Eczema Area and Severity Index (EASI 100), or a Pruritus Numeric Rating Scale score of 0 or 1 (Pruritus NRS 0/1). Patients completing Week 52 were given the option to roll over into a long-term extension (LTE) study, ADjoin (NCT04392154), allowing the opportunity to analyze deep response for a longer period of time. This analysis supports the evolution of AD treatment goals toward maintaining higher efficacy thresholds for a longer duration. Objectives To present the long-term maintenance of LEB's depth of response for up to 104 weeks of treatment (52 weeks in the ADvocate studies and 52 weeks in the ADjoin study). Methods Patients entering ADjoin from ADvocate1 and ADvocate2 continued taking the same LEB dose as the parent study. Patients receiving placebo (LEB withdrawal) during the maintenance period of ADvocate1 and ADvocate2 transitioned to receive LEB every 2 weeks (Q2W) during ADjoin (data not included in this analysis). The proportion of patients achieving IGA and EASI responses were calculated from the LEB-treated patients who were IGA 0/1 or EASI 75 responders, respectively, at Week 16 in ADvocate1 and ADvocate2. The proportion of patients achieving a Pruritus NRS 0/1 response were calculated from the LEB patients who were per protocol responders at Week 16 of ADvocate1 and ADvocate2. Each patient's absolute Pruritus NRS score was calculated by averaging daily scores from the previous seven days with at least one nonmissing value. The weekly score was then rounded to the nearest integer. Consistent with common reporting practices for LTE studies, this post hoc analysis reports observed data which were analyzed regardless of rescue medication use or treatment discontinuation. Results From Week 52 to Week 104, the proportion of IGA 0 responders was maintained and slightly increased in patients treated with LEB Q2W (50.8% [N=59] to 52.3% [N=44]) and LEB every 4 weeks (Q4W; 43.5% [N=69] to 45.5% [N=55]). Greater improvements over the second year of treatment were seen in the proportion of EASI 100 responders treated with LEB Q2W (36.4% [N=88] to 39.7% [N=68]) and LEB Q4W (30.7% [N=101] to 41.3% [N=80]) as well as the proportion of Pruritus NRS 0/1 responders treated with LEB Q2W (46.3% [N=80] to 57.4% [N=61]) and Q4W (47.9% [N=94] to 55.4% [N=65]). Although rescue medication was allowed during ADjoin, a relatively low proportion of patients received ≥1 topical rescue medication in the LEB Q2W (9.8%) and LEB Q4W (15.2%) treatment arms. Conclusions These 2-year results demonstrate an extended maintenance of deep response in patients treated with LEB Q2W and LEB Q4W after responding to 16 weeks of LEB Q2W. Approximately 50% and 40% of LEB-treated patients sustained total skin clearance (IGA 0 and EASI 100, respectively) and more than 55% of LEB-treated patients reported no or minimal itch (Pruritus NRS 0/1). Maintenance treatment with LEB Q2W and LEB Q4W allows patients and providers to elevate their expected treatment goals in AD beyond EASI 75 and IGA 0/1 response. [ABSTRACT FROM AUTHOR]

In the Th2 high group, in contrast to the Th2 low, the IL-13 response by SEB CLA SP + sp T cells directly correlated with EASI score and plasma levels of CCL17 and sIL-2R (Figure 2A-C). I Staphylococcus aureus i , memory skin-homing cutaneous lymphocyte-associated antigen (CLA) SP + sp T cells and IL-13 constitute relevant players in atopic dermatitis (AD) pathogenesis.1 Since circulating CLA SP + sp T cells reflect cutaneous abnormalities present in human inflammatory skin diseases,2 an I ex vivo i coculture model made of purified circulating CLA SP +/- sp effector and central memory T cells and autologous lesional epidermal cells was established. SEB-induced IL-13 production in CLA+ memory T cells defines Th2 high and Th2 low responders in atopic dermatitis. [Extracted from the article]

This article discusses the use of Janus kinase (JAK) inhibitors as a treatment option for atopic dermatitis (AD). The authors report on two cases of AD patients who initially responded well to upadacitinib, a JAK inhibitor, but later experienced a loss of efficacy. However, after a period of discontinuation and reintroduction of the drug, both patients showed a positive response again. The article also mentions a study that suggests the phenomenon of acquired reversible resistance to JAK inhibitors, which could explain the treatment failures observed. The authors conclude that the treat-retreat strategy could be a viable option for managing treatment failure in AD patients undergoing JAK inhibitor treatment. [Extracted from the article]