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Efficacy of Tofacitinib for the Treatment of Psoriatic Arthritis: Pooled Analysis of Two Phase 3 Studies.


ABSTRACT:

Introduction

Tofacitinib is an oral Janus kinase inhibitor for the treatment of psoriatic arthritis (PsA). This post hoc analysis assessed the efficacy of tofacitinib using pooled data from two phase 3 studies of patients with active PsA.

Methods

Data were pooled from OPAL Broaden (NCT01877668) and OPAL Beyond (NCT01882439). Patients had active PsA and either an inadequate response (IR) to ≥ 1 conventional synthetic disease-modifying antirheumatic drug (csDMARD) and were tumor necrosis factor inhibitor (TNFi)-naïve (OPAL Broaden), or had IR to ≥ 1 TNFi (OPAL Beyond). Pooled data included tofacitinib 5 or 10 mg twice daily (BID; to month 6) and placebo (to month 3; patients then switched to tofacitinib 5 or 10 mg BID). Patients also received one background csDMARD. Endpoints included American College of Rheumatology (ACR)20 response and change from baseline in Health Assessment Questionnaire-Disability Index (HAQ-DI) at month 3 (primary endpoints), ACR50/70 response, HAQ-DI response (decrease from baseline ≥ 0.35) and improvements in painful and swollen joint counts, psoriasis, enthesitis and dactylitis to month 6.

Results

A total of 710 patients were included (tofacitinib 5 mg BID: 238; tofacitinib 10 mg BID: 236; placebo: 236). Primary endpoints showed significant improvements at month 3 in patients receiving tofacitinib 5 or 10 mg BID vs. placebo. Significant improvements in HAQ-DI response, painful and swollen joints, psoriasis, enthesitis and dactylitis vs. placebo were observed for both tofacitinib doses at month 3. Efficacy was maintained to month 6 (final pooled time point).

Conclusions

In a pooled analysis of csDMARD-IR/TNFi-naïve and TNFi-IR patients, tofacitinib was superior to placebo at month 3 across four PsA domains: peripheral arthritis, psoriasis, enthesitis and dactylitis.

Trial registration

OPAL Broaden (NCT01877668); OPAL Beyond (NCT01882439).

Funding

Pfizer Inc.

SUBMITTER: Nash P 

PROVIDER: S-EPMC6251851 | biostudies-literature |

REPOSITORIES: biostudies-literature

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