Cytokine Signalling Forum

Publications





August 19

Efficacy and Safety of Peficitinib (ASP015K) in Patients with Rheumatoid Arthritis and an Inadequate Response to Methotrexate: Results of a Phase III Randomised, Double-Blind, Placebo-Controlled Trial (RAJ4) in Japan

Takeuchi T, Tanaka Y, Tanaka S, Kawakami A, Iwasaki M, Katayama K, Rokuda M, Izutsu H, Ushijima S, Kaneko Y, Shiomi T, Yamada E, van der Heijde D.
Ann Rheum Dis 2019 DOI: 10.1136/annrheumdis-2019-215164

Peficitinib (PEF) 100 and 150 mg demonstrated robust clinical and structural efficacy in patients with RA who have an inadequate response to MTX. In Japan, two JAK inhibitors, TOF and BARI are currently available for RA patients with an inadequate response to conventional therapies. This randomized phase 3 study (RAJ4), assessed the efficacy and safety of two PEF doses in combination with MTX compared to PBO, in Japanese MTX-IR. Patients were randomized 1:1:1 to PBO, PEF 100 mg and 150 mg with...

Keywords: JAK, Peficitinib, Clinical, Phase 3

February 17

Peficitinib, a JAK Inhibitor, in Combination with Limited Conventional Synthetic DMARDs in the Treatment of Moderate-to-severe Rheumatoid Arthritis

Genovese MC, Greenwald M, Codding C, Zubrzycka-Sienkiewicz A, Kivitz AJ, Wang A, Shay K, Wang X, Garg JP, Cardiel MH.
Arthritis Rheumatol DOI 10.1002/art.40054. Accepted article.

In this Phase 2b study in patients with moderate to severe RA, once-daily peficitinib in combination with limited csDMARDs reduced the symptoms of RA, demonstrated a dose-dependent ACR20 response rate over 12 weeks, and showed acceptable tolerability. This 12-week study included patients who had an inadequate response or intolerance to csDMARDs (N=289). Patients were randomised 1:1:1:1:1 to peficitinib 25-, 50-, 100, 150 mg or matching placebo. Statistically significant differences in the AC...

Keywords: JAK, Peficitinib, Clinical, Phase 2

December 16

Peficitinib, a JAK Inhibitor, in the Treatment of Moderate-to-severe Rheumatoid Arthritis in Methotrexate-inadequate Responders

Kivitz AJ, Gutierrez-Ureña SR, Poiley J, Genovese MC, Kristy R, Shay K, Wang X, Garg JP, Zubrzycka-Sienkiewicz A.
Arthritis & Rheum 2016; ePub ahead of print

This Phase 2b study of peficitinib (ASP015K), an orally administered once-daily JAK inhibitor, plus MTX, demonstrated efficacy across multiple secondary endpoints with higher peficitinib doses. Peficitinib in combination with MTX was well tolerated with a safety profile that was consistent with previous studies. A high placebo response rate was seen in both Latin and North America, when patient data were stratified. This high placebo rate is problematic for the accurate interpretation of pefic...

Keywords: JAK, Peficitinib, Clinical, Phase 2

July 16

Efficacy and safety of the oral Janus kinase inhibitor peficitinib (ASP015K) monotherapy in patients with moderate to severe rheumatoid arthritis in Japan:�a 12-week, randomised, double-blind, placebo-controlled phase IIb study

Takeuchi et al.
Ann Rheum Dis. 2016 Jun;75:1057-64. doi: 10.1136/annrheumdis-2015-208279. Epub 2015 Dec 15

Peficitinib (ASP015K) is a novel orally bioavailable JAK inhibitor in development for the treatment of RA. It inhibits JAK1, JAK2, JAK3 and Tyk2 enzyme activities and has moderate selectivity or JAK3 inhibition. Here the authors report the findings of a 12-week, randomized, double-blind, placebo-controlled phase IIb study evaluating efficacy, safety and dose response of peficitinib (25, 50, 100, or 150 mg) as once-daily oral monotherapy in Japanese patients with moderate to severe RA. The prim...

Keywords: JAK, Peficitinib, Clinical, Phase 2