Effects of systemic therapies on pruritus in adults with atopic dermatitis: a systematic review and meta-analysis

Comparative efficacy of targeted systemic therapies for pruritus in moderate-to-severe atopic dermatitis without topical treatment: a network meta-analysis

BACKGROUND

Chronic pruritus is the most prevalent and severe symptom of atopic dermatitis (AD).

OBJECTIVE

This network meta-analysis aims to assess the comparative efficacy of systemic targeted monotherapies in alleviating pruritus among adults and adolescents with moderate-to-severe AD.

METHODS

Data were collected from phase 3/4 randomized controlled trials (RCTs) published until 24 August 2024, focusing on targeted therapies for moderate-to-severe AD. The outcome measure was the proportion of patients achieving a ≥ 4-point improvement from baseline on the Pruritus Numerical Rating Scale (NRS). This analysis included both primary endpoints (week 12 or week 16) and secondary endpoints (weeks 2, 4, and 8).

RESULTS

Eleven reports comprising 16 studies with 8,462 participants were included. At all time points examined, targeted therapies demonstrated statistically significant efficacy over placebo, with upadacitinib 30 mg showing the highest response rate. The next most effective treatments at the primary endpoint were abrocitinib 200 mg, upadacitinib 15 mg, dupilumab 300 mg, and lebrikizumab 250 mg. Cumulative ranking probabilities at secondary endpoints varied based on time points.

CONCLUSION

Targeted therapies, particularly upadacitinib 30 mg, showed significant advantages in managing moderate-to-severe AD pruritus. Further direct comparative trials are needed for conclusive evidence.

Effectiveness of systemic treatments on pruritus associated with atopic dermatitis: A systematic review in pediatric patients

BACKGROUND/OBJECTIVES

Itch is one of the hallmarks of atopic dermatitis (AD), which has a significant impact on the quality of life of pediatric patients with AD and their caregivers. We aimed to conduct a systematic review and meta-analysis to evaluate the antipruritic effects of systemic AD treatments in pediatric patients with AD.

METHODS

PubMed, EMBASE, Cochrane, and Web of Science databases were searched, including studies providing original data on the effects of systemic treatment on pruritus in pediatric patients (<18 years) with AD. Placebo-controlled trials reporting a Peak Pruritus Numerical Rating Scale 4 (PP-NRS4) response were included in a meta-analysis.

RESULTS

A total of 30 studies were included, with most evidence available for dupilumab. Overall, marked improvements of pruritus (50% or greater reduction in pruritus outcome measurements) were found for treatment with cyclosporin A (2-16 years), dupilumab (6 months-17 years), abrocitinib, and upadacitinib (both 12 and 17 years). Nemolizumab (12-17 years) may be promising in reducing pruritus in pediatric patients; however, data are limited. Only five randomized controlled trials could be included in our meta-analysis, in which dupilumab, abrocitinib, and upadacitinib showed a significantly higher probability of achieving a PP-NRS4 response compared with placebo. Our study was limited by a lack of homogeneity of included studies.

CONCLUSIONS

Cyclosporin A, dupilumab, abrocitinib, and upadacitinib are all effective in decreasing pruritus and, therefore, in improving the quality of life in children with AD. As more systemic treatments for AD become available, it will be imperative to incorporate patient-oriented treatment goals such as reduction of pruritus into therapeutic decision-making.

A case of dupilumab combination therapy for exacerbation of atopic dermatitis in a patient with eosinophilic granulomatosis with polyangiitis treated with mepolizumab

We report a 60-year-old male with eosinophilic granulomatosis with polyangiitis (EGPA) complicated with atopic dermatitis (AD). The patient was initially treated with prednisolone, cyclosporine A, and mepolizumab (MEPO). Due to worsening skin symptoms after prednisolone tapering, dupilumab (DUP) was added as an adjunctive therapy for AD confirmed by skin biopsy. The combination therapy of MEPO and DUP resulted in rapid improvement of skin symptoms, suggesting it may be an effective therapeutic option for patients with EGPA and AD. This case report emphasises the importance of a multidisciplinary approach in treating complex diseases such as EGPA and AD.

IRAK4 degrader in hidradenitis suppurativa and atopic dermatitis: a phase 1 trial

Toll-like receptor-driven and interleukin-1 (IL-1) receptor-driven inflammation mediated by IL-1 receptor-associated kinase 4 (IRAK4) is involved in the pathophysiology of hidradenitis suppurativa (HS) and atopic dermatitis (AD). KT-474 (SAR444656), an IRAK4 degrader, was studied in a randomized, double-blind, placebo-controlled phase 1 trial where the primary objective was safety and tolerability. Secondary objectives included pharmacokinetics, pharmacodynamics and clinical activity in patients with moderate to severe HS and in patients with moderate to severe AD. KT-474 was administered as a single dose and then daily for 14 d in 105 healthy volunteers (HVs), followed by dosing for 28 d in an open-label cohort of 21 patients. Degradation of IRAK4 was observed in HV blood, with mean reductions after a single dose of ≥93% at 600-1,600 mg and after 14 daily doses of ≥95% at 50-200 mg. In patients, similar IRAK4 degradation was achieved in blood, and IRAK4 was normalized in skin lesions where it was overexpressed relative to HVs. Reduction of disease-relevant inflammatory biomarkers was demonstrated in the blood and skin of patients with HS and patients with AD and was associated with improvement in skin lesions and symptoms. There were no drug-related infections. These results, from what, to our knowledge, is the first published clinical trial using a heterobifunctional degrader, provide initial proof of concept for KT-474 in HS and AD to be further confirmed in larger trials. ClinicalTrials.gov identifier: NCT04772885 .

Automated Machine Learning Analysis of Patients With Chronic Skin Disease Using a Medical Smartphone App: Retrospective Study

BACKGROUND

Rapid digitalization in health care has led to the adoption of digital technologies; however, limited trust in internet-based health decisions and the need for technical personnel hinder the use of smartphones and machine learning applications. To address this, automated machine learning (AutoML) is a promising tool that can empower health care professionals to enhance the effectiveness of mobile health apps.

OBJECTIVE

We used AutoML to analyze data from clinical studies involving patients with chronic hand and/or foot eczema or psoriasis vulgaris who used a smartphone monitoring app. The analysis focused on itching, pain, Dermatology Life Quality Index (DLQI) development, and app use.

METHODS

After extensive data set preparation, which consisted of combining 3 primary data sets by extracting common features and by computing new features, a new pseudonymized secondary data set with a total of 368 patients was created. Next, multiple machine learning classification models were built during AutoML processing, with the most accurate models ultimately selected for further data set analysis.

RESULTS

Itching development for 6 months was accurately modeled using the light gradient boosted trees classifier model (log loss: 0.9302 for validation, 1.0193 for cross-validation, and 0.9167 for holdout). Pain development for 6 months was assessed using the random forest classifier model (log loss: 1.1799 for validation, 1.1561 for cross-validation, and 1.0976 for holdout). Then, the random forest classifier model (log loss: 1.3670 for validation, 1.4354 for cross-validation, and 1.3974 for holdout) was used again to estimate the DLQI development for 6 months. Finally, app use was analyzed using an elastic net blender model (area under the curve: 0.6567 for validation, 0.6207 for cross-validation, and 0.7232 for holdout). Influential feature correlations were identified, including BMI, age, disease activity, DLQI, and Hospital Anxiety and Depression Scale-Anxiety scores at follow-up. App use increased with BMI >35, was less common in patients aged >47 years and those aged 23 to 31 years, and was more common in those with higher disease activity. A Hospital Anxiety and Depression Scale-Anxiety score >8 had a slightly positive effect on app use.

CONCLUSIONS

This study provides valuable insights into the relationship between data characteristics and targeted outcomes in patients with chronic eczema or psoriasis, highlighting the potential of smartphone and AutoML techniques in improving chronic disease management and patient care.

Pruritogenic Mediators and New Antipruritic Drugs in Atopic Dermatitis

Atopic dermatitis (AD) is a common highly pruritic chronic inflammatory skin disorder affecting 5-20% of children worldwide, while the prevalence in adults varies from 7 to 10%. Patients with AD experience intense pruritus that could lead to sleep disturbance and impaired quality of life. Here, we analyze the pathophysiology of itchiness in AD. We extensively review the histamine-dependent and histamine-independent pruritogens. Several receptors, substance P, secreted molecules, chemokines, and cytokines are involved as mediators in chronic itch. We also, summarize the new emerging antipruritic drugs in atopic dermatitis.

Treatment With Dupilumab in Patients With Atopic Dermatitis: Systematic Review and Meta-Analysis

Atopic dermatitis (AD) is a type 2 chronic skin disorder associated with systemic and psychosocial comorbidities decreasing the quality of life for many patients. Dupilumab, a human monoclonal antibody that blocks interleukins IL-4 and IL-13, is a recently added systematic treatment option with an emerging evidence base. Here, we assessed the safety and efficacy of dupilumab in patients with AD. We conducted a systematic review and meta-analysis of placebo-controlled randomized clinical trials evaluating the safety and efficacy of dupilumab on AD-related outcomes including clinical symptoms, quality of life and adverse events (AE). Subgroup analysis was further performed in adults and children/adolescents. Fourteen trials were included: twelve in adults (n = 3,817) and two in children/adolescents (n = 618). Dupilumab decreased the Eczema Area Severity Index (EASI) score [standardized mean difference (SMD) = −0.98; 95% confidence interval (95% CI) = (−1.09, −0.88)], the percent change difference in Scoring Atopic Dermatitis (SCORAD) [mean difference (MD) = −31.56, 95% CI = (−33.75, −29.36)], and in pruritus Numeric Rating Scale (pNRS) [MD = −29.24, 95% CI = (−32.11, −26.37)]. It also achieved a reduction of at least ≥75% in the EASI score [Risk Ratio (RR) = 2.89, 95% CI = (2.47, 3.38)], the Investigator’s Global Assessment (IGA) score ≤1 [RR = 3.47, 95% CI = (2.96, 4.06)] and eight additional endpoints with no signs of increased AE compared to placebo. In subgroup analysis, the results were concordant for both groups. Dupilumab improved clinical symptoms and quality of life in adults and children/adolescents with a safety profile comparable to placebo.

Quantifying Physician Preferences for Systemic Atopic Dermatitis Treatments Using a Discrete-Choice Experiment

Introduction

As research continues, new drugs will no doubt be added to the current pool of treatments for moderate-to-severe atopic dermatitis (AD). This raises the need for studies to determine prescriber preferences for different pharmacological options and the factors that influence their choice of treatment. Here we aim to explore physician preferences in the systemic treatment of moderate-to-severe AD, identify the sociodemographic characteristics that can influence physician preferences, and evaluate their satisfaction with current AD therapies.

Methods

A discrete-choice experiment (DCE) survey was administered to physicians treating patients with AD in Spain. Results were analyzed using a conditional logit model to estimate the relative importance of each attribute and the maximum risk accepted to achieve therapeutic benefit.

Results

A total of 28 respondents completed the DCE survey (67.9% female, mean age 45.9 years). Participants identified objective clinical efficacy and risk of severe adverse events (AEs) as the most important attributes, followed by improvement in sleep and pruritus and faster onset of action from the start of the treatment. Respondents gave less importance to mode of administration and therapeutic benefit in other atopic conditions. Respondents were willing to accept an increased risk of severe AEs and mild-to-moderate AEs leading to treatment discontinuation due to intolerance in order to obtain improvements in efficacy, sleep, and pruritus, and long-term clinical benefit.

Conclusion

Our findings can help prescribers choose the most appropriate systemic AD therapy.

Supplementary Information

The online version contains supplementary material available at 10.1007/s13555-022-00723-z.