PMID- 22924949 OWN - NLM STAT- MEDLINE DCOM- 20130115 LR - 20220330 IS - 1365-2133 (Electronic) IS - 0007-0963 (Linking) VI - 167 IP - 3 DP - 2012 Sep TI - Efficacy and safety of tofacitinib, an oral Janus kinase inhibitor, in the treatment of psoriasis: a Phase 2b randomized placebo-controlled dose-ranging study. PG - 668-77 LID - 10.1111/j.1365-2133.2012.11168.x [doi] AB - BACKGROUND: Tofacitinib is a novel, oral Janus kinase inhibitor under investigation as a potential treatment for plaque psoriasis. OBJECTIVES: This Phase 2b, 12-week, dose-ranging study (A3921047, NCT00678210) aimed to characterize the exposure-response, efficacy and safety of tofacitinib vs. placebo in patients with moderate-to-severe chronic plaque psoriasis. METHODS: One hundred and ninety-seven patients were randomized. The primary endpoint was the proportion of patients achieving a >/= 75% reduction in the Psoriasis Area and Severity Index (PASI 75) score at week 12. RESULTS: At week 12, PASI 75 response rates were significantly higher for all tofacitinib twice-daily groups: 25.0% (2 mg; P < 0.001), 40.8% (5 mg; P < 0.0001) and 66.7% (15 mg; P < 0.0001), compared with placebo (2.0%). Significant increases in the proportion of PASI 75 responses were seen by week 4 and were maintained at week 12. Exposure-response over the 0-15 mg tofacitinib twice-daily dose range was successfully characterized. PASI 50, PASI 90 and Physician's Global Assessment response rates were also higher for tofacitinib vs. placebo. The most frequently reported adverse events (AEs) were infections and infestations: 22.4% (2 mg twice daily), 20.4% (5 mg twice daily), 36.7% (15 mg twice daily) and 32.0% (placebo). Discontinuations due to AEs were 6.0%, 2.0%, 4.1% and 6.1% of patients in the placebo, and 2, 5 and 15 mg twice-daily tofacitinib groups, respectively. Dose-dependent increases from baseline in mean serum high-density lipoprotein, low-density lipoprotein and total cholesterol, and decreases in haemoglobin and neutrophils were observed. CONCLUSION: Short-term treatment with oral tofacitinib results in significant clinical improvement in patients with moderate-to-severe plaque psoriasis and is generally well tolerated. CI - (c) 2012 The Authors. BJD (c) 2012 British Association of Dermatologists. FAU - Papp, K A AU - Papp KA AD - Probity Medical Research, 135 Union Street East, Waterloo, ON N2J 1C4, Canada. kapapp@probitymedical.com FAU - Menter, A AU - Menter A FAU - Strober, B AU - Strober B FAU - Langley, R G AU - Langley RG FAU - Buonanno, M AU - Buonanno M FAU - Wolk, R AU - Wolk R FAU - Gupta, P AU - Gupta P FAU - Krishnaswami, S AU - Krishnaswami S FAU - Tan, H AU - Tan H FAU - Harness, J A AU - Harness JA LA - eng SI - ClinicalTrials.gov/NCT00678210 PT - Clinical Trial, Phase II PT - Journal Article PT - Multicenter Study PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't PL - England TA - Br J Dermatol JT - The British journal of dermatology JID - 0004041 RN - 0 (Dermatologic Agents) RN - 0 (Piperidines) RN - 0 (Pyrimidines) RN - 0 (Pyrroles) RN - 87LA6FU830 (tofacitinib) RN - EC 2.7.10.2 (Janus Kinase 3) SB - IM MH - Administration, Oral MH - Adult MH - Chronic Disease MH - Dermatologic Agents/*administration & dosage/adverse effects MH - Dose-Response Relationship, Drug MH - Double-Blind Method MH - Female MH - Humans MH - Janus Kinase 3/*antagonists & inhibitors MH - Male MH - Piperidines MH - Psoriasis/*drug therapy MH - Pyrimidines/*administration & dosage/adverse effects MH - Pyrroles/*administration & dosage/adverse effects MH - Treatment Outcome EDAT- 2012/08/29 06:00 MHDA- 2013/01/16 06:00 CRDT- 2012/08/29 06:00 PHST- 2012/08/29 06:00 [entrez] PHST- 2012/08/29 06:00 [pubmed] PHST- 2013/01/16 06:00 [medline] AID - 10.1111/j.1365-2133.2012.11168.x [doi] PST - ppublish SO - Br J Dermatol. 2012 Sep;167(3):668-77. doi: 10.1111/j.1365-2133.2012.11168.x.