Safety and efficacy of long-term tofacitinib treatment in East Asian patients with ulcerative colitis in OCTAVE Open.

BACKGROUND AND AIM: Tofacitinib is an oral small molecule Janus kinase inhibitor for the treatment of ulcerative colitis (UC). We present safety and efficacy data from patients from East Asia (Japan, Korea, and Taiwan) in OCTAVE Open, an open-label, long-term extension study. METHODS: Patients in remission at OCTAVE Open baseline received tofacitinib 5 mg twice daily (BID); all others received tofacitinib 10 mg BID. Proportions and IRs (unique patients with events/100 patient-years) were calculated for adverse events (AEs) of special interest. Efficacy endpoints were evaluated up to 36 months. RESULTS: In OCTAVE Open, 105/944 patients were from East Asia (tofacitinib 5 mg BID, n = 22; tofacitinib 10 mg BID, n = 83). Overall, 87.6% and 24.8% of patients had AEs and serious AEs, respectively; IRs (95% CI) for AEs of special interest were herpes zoster (HZ; non-serious and serious), 6.07 (3.40-10.02); serious infections, 1.47 (0.40-3.76); opportunistic infections, 1.91 (0.62-4.45); major cardiovascular adverse events, 0.37 (0.01-2.04); malignancies (excluding non-melanoma skin cancer [NMSC]), 0.37 (0.01-2.04); and NMSC, 0.00 (0.00-1.35). No deaths, venous thromboembolic events, or gastrointestinal perforations occurred. At month 36, 68.2% and 54.2% of patients had a clinical response, 68.2% and 53.0% had endoscopic improvement, and 63.6% and 49.4% were in remission with tofacitinib 5 and 10 mg BID, respectively. CONCLUSIONS: The HZ IR in East Asian patients was numerically higher versus the global study population; excluding HZ, tofacitinib safety and efficacy were consistent with the global study population.

Tofacitinib as Induction and Maintenance Therapy in Japanese Patients with Active Ulcerative Colitis.

BACKGROUND: Tofacitinib is an oral, small molecule Janus kinase inhibitor approved in Japan for the treatment of ulcerative colitis (UC). Differences in the safety profile of tofacitinib in Japanese patients versus the global population, such as a higher risk of herpes zoster, have been reported. OBJECTIVES: We conducted post hoc analyses of tofacitinib treatment in Japanese patients with moderate-to-severe UC in two global phase III studies. METHODS: In OCTAVE Induction 1 (NCT01465763), 62 patients were randomized to placebo or tofacitinib 10 mg twice daily (b.i.d.). In OCTAVE Sustain (NCT01458574), 39 patients with clinical response in OCTAVE Induction 1 were re-randomized to placebo, tofacitinib 5 mg, or 10 mg b.i.d. Efficacy endpoints included: remission (primary endpoint; total Mayo score ≤2; no individual subscore >1; rectal bleeding subscore 0); mucosal healing (Mayo endoscopic subscore ≤1); clinical response (≥30% and ≥3-point decrease from induction study baseline total Mayo score; decrease in rectal bleeding subscore ≥1 or absolute subscore ≤1). Adverse events (AEs) and clinical laboratory parameters were recorded. RESULTS: At week 8 of OCTAVE Induction 1, 22.4% of patients achieved remission with tofacitinib (placebo, 7.7%). At week 52 of OCTAVE Sustain, 31.3% and 66.7% of patients receiving tofacitinib 5 and 10 mg b.i.d., respectively, achieved remission (placebo, 9.1%). The occurrence of AEs or serious AEs in Japanese patients was generally similar to that in the global study population, with no new or unexpected safety risks observed. CONCLUSIONS: Although patient numbers were small, tofacitinib demonstrated numerically greater efficacy versus placebo among Japanese patients in OCTAVE Induction 1 and OCTAVE Sustain, with a safety profile consistent with that of the global study population.

Corrigendum: Tofacitinib induction and maintenance therapy in East Asian patients with active ulcerative colitis: subgroup analyses from three phase 3 multinational studies.

[This corrects the article on p. 233 in vol. 16, PMID: 29743836.].

Tofacitinib induction and maintenance therapy in East Asian patients with active ulcerative colitis: subgroup analyses from three phase 3 multinational studies.

BACKGROUND/AIMS: Tofacitinib is an oral, small-molecule Janus kinase inhibitor being investigated for ulcerative colitis (UC). In OCTAVE Induction 1 and 2, patients with moderately to severely active UC received placebo or tofacitinib 10 mg twice daily (BID) for 8 weeks. Clinical responders in OCTAVE Induction were re-randomized to 52 weeks' therapy with placebo, tofacitinib 5 mg BID, or tofacitinib 10 mg BID. METHODS: We conducted post-hoc efficacy and safety analyses of East Asian patients in OCTAVE Induction 1 and 2 and OCTAVE Sustain. RESULTS: A total of 121 East Asian (Japan, Korea, and Taiwan) patients were randomized in OCTAVE Induction 1 and 2 (placebo, n=26; tofacitinib 10 mg BID, n=95), and 63 in OCTAVE Sustain (placebo, n=20; tofacitinib 5 mg BID, n=22; tofacitinib 10 mg BID, n=21). At week 8 of OCTAVE Induction 1 and 2, 18.9% of patients (18/95) achieved remission with tofacitinib 10 mg BID versus 3.8% (1/26) with placebo. In OCTAVE Sustain, the week 52 remission rates were 45.5% (10/22), 47.6% (10/21), and 15.0% (3/20) with 5 mg BID, 10 mg BID, and placebo, respectively. Adverse event rates were similar between groups in OCTAVE Induction and numerically higher with tofacitinib in OCTAVE Sustain. Serious adverse event rates were similar across groups in all studies. Infections were numerically more frequent with tofacitinib than placebo. Increases in serum lipid levels were observed with tofacitinib. CONCLUSIONS: In East Asian patients with UC, tofacitinib demonstrated numerically greater efficacy versus placebo as induction and maintenance therapy, with a safety profile consistent with the global study population. ClinicalTrials.gov: NCT01465763; NCT01458951; NCT01458574.

Efficacy and Safety of Bococizumab (RN316/PF-04950615), a Monoclonal Antibody Against Proprotein Convertase Subtilisin/Kexin Type 9, in Hypercholesterolemic Japanese Subjects Receiving a Stable Dose of Atorvastatin or Treatment-Naive　- Results From a Randomized, Placebo-Controlled, Dose-Ranging Study.

BACKGROUND: A Phase 2, dose-ranging study of bococizumab, a monoclonal anti-proprotein convertase subtilisin/kexin type 9 antibody, was conducted in Japanese subjects to assess its efficacy, safety, and tolerability in this population.Methods and Results:Two different hypercholesterolemic study populations were enrolled concurrently: Japanese subjects with uncontrolled low-density lipoprotein cholesterol (LDL-C) despite atorvastatin treatment (LDL-C ≥100 mg/dL; n=121), and Japanese subjects naive to lipid-lowering agents and with LDL-C ≥130 mg/dL (n=97). Subjects within each study population were randomized to bococizumab 50, 100, or 150 mg, or placebo, q14D for 16 weeks; an open-label ezetimibe 10 mg daily arm was also included for the atorvastatin-treated population. Significant, dose-dependent reductions in fasting LDL-C levels were observed in all bococizumab arms of both study populations at Weeks 12 and 16 (adjusted mean percent changes from baseline: 54.1-76.7% for atorvastatin-treated subjects and 47.7-66.8% for treatment-naive subjects; P<0.001 vs. placebo for all). Bococizumab also caused dose-dependent changes in other lipid parameters in both study populations at Weeks 12 and 16. No serious adverse events (AEs) related to bococizumab treatment occurred and all treatment-emergent AEs were mild or moderate in severity. No dose-dependent relationship between bococizumab treatment and development of anti-drug antibodies was observed. CONCLUSIONS: Bococizumab was well tolerated and significantly reduced fasting LDL-C in atorvastatin-treated and treatment-naive hypercholesterolemic Japanese subjects. (Clinicaltrials.gov identifier: NCT02055976.).