Efficacy of tofacitinib in psoriatic arthritis: literature review and case report

Abstract

The article presents the results of a search in the PubMed and Google Scholar databases (meta-analyses, systematic reviews, clinical trials and case studies) evaluating the treatment of PsA with tofacitinib (TOFA). The review contains the most up-to-date information about the efficacy and safety of TOFA, a drug from the group of janus kinase inhibitors (JAKi), a brief description of the mechanism of action of TOFA is given, with mention of blocked signaling intracellular pathways. The spectrum of “key” clinical manifestations of psoriatic arthritis (PsA) is described, in which the therapeutic potential of TOFA (peripheral arthritis, psoriasis, enthesitis and dactylitis) is most fully revealed. The results of the main randomized controlled trials (OPAL Broaden and OPAL Beyond), postmarketing trials, descriptive studies and clinical observations are considered, and the high efficacy of TOFA for the treatment of PsA patients who did not respond to therapy with synthetic disease-modifying drugs and/ or Tumor Necrosis Factor inhibitors (TNFi) is demonstrated. The results (and their interpretation) of studying the safety of long-term use of different doses of TOFA – 5 mg 2 times a day and 10 mg 2 times a day and retention (“survival”) are presented therapy, with an emphasis on adverse events of special interest (“large” cardiological events (MACE), oncologics, infections). The results of treatment with tofacitinib in patients with PsA according to the All-Russian register of patients are presented. The pronounced positive effect of TOFA on the parameters that are defined as “patient-reported outcome – PRO” is particularly emphasized: indicators of fatigue, self-assessment, patient’s assessment of his condition according to VAS, assessment by HAQ-DI (Health Assessment Questionnaire), SF-36 (non-specific questionnaire for quality assessment patient’s life), etc. A clinical observation is presented that demonstrates a vivid therapeutic effect on arthritis, enteritis, dactylitis, clinical signs of spondylitis, sacroiliitis, as well as the skin process in a patient with active PsA.