Sex differences in the efficacy, safety and persistence of patients with psoriatic arthritis treated with tofacitinib: a post-hoc analysis of phase 3 trials and long-term extension

Risk Stratification of Patients with Psoriatic Arthritis and Ankylosing Spondylitis for Treatment with Tofacitinib: A Review of Current Clinical Data

In this commentary, we review clinical data which helps inform individualized benefit-risk assessment for tofacitinib in patients with psoriatic arthritis (PsA) and ankylosing spondylitis (AS). ORAL Surveillance, a safety trial of patients ≥ 50 years of age with rheumatoid arthritis (RA) and cardiovascular risk factors, found increased rates of safety outcomes (including major adverse cardiovascular events [MACE], malignancies excluding non-melanoma skin cancer, and venous thromboembolism) with tofacitinib versus tumor necrosis factor inhibitors (TNFi). Post hoc analyses of ORAL Surveillance have identified subpopulations with different relative risk versus TNFi; higher risk with tofacitinib was confined to patients ≥ 65 years of age and/or long-time current/past smokers, and specifically for MACE, patients with a history of atherosclerotic cardiovascular disease (ASCVD). In patients without these risk factors, risk differences between tofacitinib and TNFi could not be detected. Given differences in demographics, pathophysiology, and comorbidities, we sought to examine whether the risk stratification observed in RA is also appropriate for PsA and AS. Data from the PsA tofacitinib development program show low absolute risk of safety outcomes in patients < 65 years of age and never smokers, and low MACE risk in patients with no history of ASCVD, consistent with results from ORAL Surveillance. No MACE, malignancies, or venous thromboembolism were reported in the tofacitinib AS development program. The mechanism of the ORAL Surveillance safety findings is unknown, and there are no similar prospective studies of sufficient size and duration. Accordingly, it is appropriate to use a precautionary approach and extrapolate differentiating risk factors identified from ORAL Surveillance (age ≥ 65 years, long-time current/past smoking, and history of ASCVD) to PsA and AS. We recommend an individualized approach to treatment decisions based on these readily identifiable risk factors, in line with updated labeling for Janus kinase inhibitors and international guidelines for the treatment of PsA and AS.Trial Registration: NCT02092467, NCT01262118, NCT01484561, NCT00147498, NCT00413660, NCT00550446, NCT00603512, NCT00687193, NCT01164579, NCT00976599, NCT01059864, NCT01359150, NCT02147587, NCT00960440, NCT00847613, NCT00814307, NCT00856544, NCT00853385, NCT01039688, NCT02281552, NCT02187055, NCT02831855, NCT00413699, NCT00661661, NCT01877668, NCT01882439, NCT01976364, NCT00678210, NCT01710046, NCT01241591, NCT01186744, NCT01276639, NCT01309737, NCT01163253, NCT01786668, NCT03502616.

Sex Differences in the Effectiveness of First-Line Tumor Necrosis Factor Inhibitors in Psoriatic Arthritis: Results From the European Spondyloarthritis Research Collaboration Network

OBJECTIVE

Women with psoriatic arthritis (PsA) may have reduced tumor necrosis factor inhibitor (TNFi) effectiveness compared to men. We examined sex differences in treatment response and retention rates during 24 months of follow-up among patients with PsA initiating their first TNFi.

METHODS

Data from patients with PsA across 13 European Spondyloarthritis Research Collaboration Network registries starting their first TNFi were pooled. Logistic regression was used to analyze the association between sex and treatment response using low disease activity (LDA) according to the Disease Activity Score in 28 joints using the C-reactive protein level (DAS28-CRP) (<3.2) at six months as the primary outcome. Analyses were adjusted for age, country, conventional synthetic disease-modifying antirheumatic drug treatment, and TNFi start year. Retention rates were explored using the Kaplan-Meier estimator.

RESULTS

We analyzed the treatment response of 7,679 patients with PsA (50% women) with available data on LDA at six months. At baseline, women and men had similar characteristics, including mean DAS28-CRP (women vs men, 4.4 [SD 1.2] vs 4.2 [SD 1.2]), though patient-reported outcome measures were worse in women. At six months, 64% of women and 78% of men had LDA (relative risk [RR] 0.82; 95% confidence interval [CI] 0.80-0.84). This difference was similar after adjustment (RR 0.83; 95% CI 0.81-0.85). TNFi retention rates were evaluated in 17,842 patients with PsA. Women had significantly lower retention rates than men at all time points (women 79%, 64%, and 50% vs men 88%, 77%, and 64% at 6, 12, and 24 months, respectively).

CONCLUSION

Despite comparable disease characteristics at baseline, women with PsA have reduced treatment response and retention rates to their first TNFi, highlighting the need to consider sex differences in PsA research and management.

Difficult-to-treat psoriatic arthritis (D2T PsA): a scoping literature review informing a GRAPPA research project

BACKGROUND

Psoriatic arthritis (PsA) is a multifaceted condition with a broad spectrum of manifestations and a range of associated comorbidities. A notable segment of patients with PsA remains resistant to even advanced therapeutic interventions. This resistance stems from myriad causes, including inflammatory and non-inflammatory factors.

OBJECTIVES

To collate and critically assess the various definitions and criteria of difficult-to-treat (D2T PsA present in the literature.

METHODS

Using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR) guidelines, we conducted a scoping review in July 2023, searching PubMed, American College of Rheumatology Convergence 2022, European Alliance of Associations for Rheumatology Congress 2023, Google Scholar and cited articles. Selection was made by two independent authors using Rayyan software, and conflicts were adjudicated by a third author. Eligibility criteria for PubMed focused on all article designs that were written in English, with full-text available, from the past decade, excluding only those not defining D2T PsA or targeting other populations.

RESULTS

From the 565 references sourced, 15 studies were analysed, revealing considerable variations in defining both 'active disease' and 'resistant PsA', which was most often termed 'D2T' PsA.

CONCLUSION

The definitions and criteria for D2T PsA and for 'active disease' are notably heterogeneous, with considerable variation across sources. The ongoing Group for Research and Assessment of Psoriasis and Psoriatic Arthritis initiative stands to bridge these definitional gaps and aims to provide guidance for clinicians and illuminate a path for pharmaceuticals and regulatory agencies to follow.

Differences in treatment response between female and male psoriatic arthritis patients during IL-12/23 therapy with or without methotrexate: post hoc analysis of results from the randomised MUST trial

BACKGROUND

The influence of sex on treatment outcomes during interleukin-12/23 therapy in patients with psoriatic arthritis (PsA) has not been explored.

OBJECTIVE

To conduct exploratory post hoc analyses of sex-stratified data from the MUST trial, an investigator-initiated, multicentre, phase 3b study in which patients with active PsA initiating treatment with open-label ustekinumab were randomised to treatment with placebo or methotrexate (MTX).

METHODS

We evaluated baseline characteristics, key treatment outcomes and adverse events stratified by sex, with a focus on outcomes that did not include erythrocyte sedimentation rate (ESR) as a component due to the known elevation of ESR in females.

RESULTS

A total of 166 patients were treated with ustekinumab+MTX (37 female, 50 male) or ustekinumab+placebo (32 female, 47 male). At baseline, females had a significantly longer time since PsA diagnosis and greater impairment in physical function, but similar joint counts. At week 24, both females and males showed marked improvements to ustekinumab with or without MTX. Females generally had numerically reduced treatment responses compared with males, although differences did not achieve statistical significance. MTX did not show an overall effect on treatment outcomes, but was associated with faster enthesitis responses in males only. Adverse events were generally comparable, but females in the ustekinumab+MTX group had higher levels of gastrointestinal disorders.

CONCLUSION

Females and males with PsA had differences in baseline characteristics, treatment responses and adverse events during therapy. A better understanding of sex-based differences in PsA may help optimise treatment.

Influence of sex on the persistence of different classes of targeted therapies for psoriatic arthritis: a cohort study of 14 778 patients from the French health insurance database (SNDS)

BACKGROUND

Sex differences in phenotype presentation, disease trajectory and treatment response in psoriatic arthritis (PsA) have been reported. Nevertheless, whether classes of targeted therapies differentially affect men and women with PsA remains unclear.

OBJECTIVES

To assess the effect of sex on the long-term persistence of each class of targeted therapies in PsA.

METHODS

This nationwide cohort study involved the administrative healthcare database of the French health insurance scheme linked to the hospital discharge database. We included all adults with PsA who were new users of targeted therapies (not in the year before the index date) during 2015-2021 and studied all treatment lines during the study period. Persistence was defined as the time from treatment initiation to discontinuation and was estimated by the Kaplan-Meier method. Comparison of persistence by sex involved multivariate frailty models with conventional synthetic disease-modifying antirheumatic drugs and prednisone as time-dependant variables.

RESULTS

We included 14 778 patients with PsA who were new users of targeted therapies: 8475 (57%) women (mean age 50±13 years; 15 831 lines), 6303 (43%) men (mean age 51±13 years; 10 488 lines). Overall, 1-year persistence was 52% for women and 62% for men and at 3 years it was 27% and 39%, respectively. After adjustments, persistence was lower for women than men for inhibitors of tumour necrosis factor (TNFi) (adjusted HR (HRa) 1.4, 99% CI 1.3 to 1.5) and interleukin 17 inhibitor (IL17i) (HRa 1.2, 99% CI 1.1 to 1.3) but not IL12/23i (HRa 1.1, 99% CI 0.9 to 1.3), IL23i (HRa 1.1, 99% CI 0.7 to 1.5) or Janus kinase inhibitor (JAKi) (HRa 1.2, 99% CI 0.9 to 1.6).

CONCLUSION

The treatment persistence was lower for women than men for TNFi and IL17i but not for IL12/23i, IL23i or JAKi.

Gender perspective in psoriasis: a scoping review and proposal of strategies for improved clinical practice by European dermatologists

Background

The prevalence of psoriasis is similar between men and women; however, evidence exists of sex- and gender-related differences in disease expression, impact, coping, and needs of patients with psoriasis. These differences are essential and should be considered in clinical practice and research.

Objective

To compile available evidence on sex- and gender-related differences in psoriasis, identify the most critical gaps in clinical practice and research, and use it to propose strategies for improved clinical practice.

Methods

Six European dermatologists selected the topics to consider according to their relevance in the dermatology setting with the support of methodologists. Evidence on sex- and gender-related differences was obtained by a scoping review based on search strategies in Medline and Cochrane Library from inception to October 2021 using the following terms: arthritis, psoriatic, psoriasis, gender, and sex. The panel discussed the results and proposed strategies by consensus.

Results

The scoping review identified broad themes: (1) clinical expression, (2) severity and patient-reported outcomes, (3) psychosocial impact, (4) access to treatments and propensity to treat, (5) comorbidities, and (6) treatment effect. The strategies are based on these broad themes.

Limitations

No risk of bias assessment was done due to the scoping nature of the review.

Conclusion

This review offers insights into gender differences in psoriasis, providing a foundation for improving clinical practice and patient outcomes.

Sex-related differences in patient characteristics, and efficacy and safety of advanced therapies in randomised clinical trials in psoriatic arthritis: a systematic literature review and meta-analysis

BACKGROUND

Sex-related differences in clinical manifestations and disease outcomes exist in psoriatic arthritis, however, there is limited information on sex-related differences in randomised controlled trials of psoriatic arthritis. We aimed to compare patient characteristics and efficacy and safety of advanced therapies (including biological and targeted synthetic therapies) between male and female patients with psoriatic arthritis participating in randomised controlled trials.

METHODS

In this systematic review and meta-analysis, we searched Medline, Embase, and Central databases, and conference abstract archives, from their inception to June 10, 2022, for randomised controlled trials that assessed the efficacy of advanced therapies in psoriatic arthritis. Two reviewers extracted information on participants' characteristics and rates of American College of Rheumatology (ACR) 20 and ACR50 response and minimal disease activity (MDA) by sex. Random-effects models were used to calculate pooled effects of ACR20, ACR50, and MDA in male versus female patients by drug class.

FINDINGS

We included 54 trials (11 514 [50·9%] of 22 621 participants were female and 11 107 [49·1%] were male). Sex-disaggregated results were reported in a minority of studies (nine [17%] of 54 reported baseline characteristics by sex, 18 [33%] reported efficacy by sex, and two [4%] reported safety endpoints by sex). At baseline, male patients had lower baseline tender joint count (mean difference -3·01 [95% CI -3·83 to -2·18], health assessment questionnaire scores (-0·28 [-0·33 to -0·24]), pain scores (-4·58 [-6·86 to -2·30]), patient global assessment (-3·22 [-5·27 to -1·17]), and physician global assessment (-1·34 [-2·08 to -0·08]) than did female patients. Male patients had higher baseline psoriasis area and severity index scores (mean difference 1·95 [95% CI 0·78 to 3·11]) and C-reactive protein concentrations (2·57 [0·40 to 4·74]) than did female patients. ACR20 response by sex varied across drug classes, with higher rates in males than females with interleukin (IL)-17 inhibitors (odds ratio [OR] 1·70 [95% CI 1·38-2·11]), IL-23 inhibitor (1·46 [1·20-1·78]), IL-12 and IL-23 inhibitor (2·67 [1·39-5·09]), and tumour necrosis factor (TNF) inhibitors (1·55 [1·11-2·18]), but no difference with JAK and TYK2 inhibitors (1·10 [0·87-1·38]). Similarly, ACR50 response rates were higher in male patients versus female patients in all drug classes, with exception of JAK and TYK2 inhibitors (TNF inhibitors, OR 2·17 [95% CI 1·62-2·90]; IL-17 inhibitors, 1·93 [1·56-2·38]; IL-23 inhibitor, 1·71 [1·25-2·34]; IL-12 and 23 inhibitor, 2·43 [1·14-5·20]; and JAK and TYK2 inhibitors, 1·09 [0·73-1·62]). Male patients were more likely to reach MDA with most drug classes, including IL-17 inhibitors (OR 1·99 [95% CI 1·50-2·63]), IL-23 inhibitors (1·79 [1·29-2·50]), TNF inhibitors (2·62 [1·54-4·44]), and JAK and TYK2 inhibitors (1·77 [1·15-2·73]). Risk of bias was low for most studies.

INTERPRETATION

Biological sex of patients with psoriatic arthritis influences their response to advanced therapies, but the effect varies by drug class. Selective reporting might have influenced these results. Future trials should report baseline characteristics and endpoint results by sex.

FUNDING

Canadian Rheumatology Association.

Managing psoriatic arthritis in different clinical scenarios

INTRODUCTION

Psoriatic arthritis (PsA) is a chronic, immune-mediated disease characterized by synovio-entheseal inflammation. It is estimated to affect around 30% of patients with psoriasis and significantly reduces patients' physical function and quality of life. There is a growing number of treatment options for PsA, but due to the heterogeneous clinical features of the disease and prevalence of comorbidities, managing PsA can be challenging.

AREAS COVERED

In this article, we review current understanding of the disease and available pharmacological options. Based on published treatment guidelines, emerging evidence and clinical experience, we provide our expert opinion on treatment strategies, taking into consideration the predominant disease domain and the presence of comorbidities, which can impact treatment decisions and clinical outcomes.

EXPERT OPINION

Biological and targeted synthetic disease-modifying agents are dramatically improving the lives of patients with PsA. Biosimilar TNF inhibitors offer a particularly versatile and cost-effective option, whilst newer biologics and targeted synthetic molecules that can be used to treat most domains of psoriatic disease are an attractive alternative to TNF inhibitors. Despite a lack of consensus on treatment sequencing and tapering, it is important that PsA patients, especially those with comorbidities, are looked after by a multidisciplinary team to optimize their care.