PMID- 26800231 OWN - NLM STAT- MEDLINE DCOM- 20170613 LR - 20220408 IS - 1365-2133 (Electronic) IS - 0007-0963 (Linking) VI - 174 IP - 6 DP - 2016 Jun TI - A randomized phase 2b trial of baricitinib, an oral Janus kinase (JAK) 1/JAK2 inhibitor, in patients with moderate-to-severe psoriasis. PG - 1266-76 LID - 10.1111/bjd.14403 [doi] AB - BACKGROUND: Plaque psoriasis is a chronic and often debilitating skin disorder and proinflammatory cytokines are known to play a key role in the disease process. OBJECTIVES: To evaluate the safety and efficacy of baricitinib, an oral Janus kinase (JAK) 1/JAK2 inhibitor, in patients with moderate-to-severe psoriasis in a randomized, double-blind, placebo-controlled, dose-ranging phase 2b study. METHODS: Patients were randomized (n = 271) to receive placebo or oral baricitinib at 2, 4, 8 or 10 mg once daily for 12 weeks (Part A). Dose adjustment for 12 additional weeks was based on percentage improvement in the Psoriasis Area and Severity Index (PASI) score. The primary end point was Psoriasis Area and Severity Index (PASI) 75% (PASI-75) at 12 weeks for North American patients (n = 238); secondary end points were safety and efficacy measures in the entire population. RESULTS: At week 12, more North American patients in the 8-mg (43%) and 10-mg (54%) baricitinib groups than in placebo group (17%; P < 0.05) achieved PASI-75. All baricitinib-treated groups had greater mean changes from baseline in their PASI scores (P < 0.05) at 12 weeks and (except 2 mg) had higher rates of PASI-50 than the placebo group; statistically significant PASI-90 responses were achieved in the 8-mg and 10-mg groups at 8 and 12 weeks. More than 81% of PASI-75 responders maintained their scores through 24 weeks. During Part A, study discontinuations due to adverse events (AEs) were 0%, 0%, 2.8%, 6.3% and 5.8% and treatment-emergent AE rates were 44%, 50%, 47%, 58% and 64% for placebo and 2-, 4-, 8- and 10-mg baricitinib groups, respectively. No opportunistic infections were observed in any treatment group. Dose-dependent changes in laboratory values were observed. CONCLUSIONS: Patients with moderate-to-severe psoriasis treated with baricitinib for 12 weeks achieved significant improvements in PASI-75. CI - (c) 2016 The Authors. British Journal of Dermatology published by John Wiley & Sons Ltd on behalf of British Association of Dermatologists. FAU - Papp, K A AU - Papp KA AD - K.A. Papp Clinical Research and Probity Medical Research, 135 Union Street East, Waterloo, ON, N2J 1C4, Canada. FAU - Menter, M A AU - Menter MA AD - Baylor University Medical Center, Dallas, TX, U.S.A. FAU - Raman, M AU - Raman M AD - Centre for Dermatology and Probity Medical Research, Richmond Hill, ON, Canada. FAU - Disch, D AU - Disch D AD - Eli Lilly and Company, Indianapolis, IN, U.S.A. FAU - Schlichting, D E AU - Schlichting DE AD - Eli Lilly and Company, Indianapolis, IN, U.S.A. FAU - Gaich, C AU - Gaich C AD - Eli Lilly and Company, Indianapolis, IN, U.S.A. FAU - Macias, W AU - Macias W AD - Eli Lilly and Company, Indianapolis, IN, U.S.A. FAU - Zhang, X AU - Zhang X AD - Eli Lilly and Company, Indianapolis, IN, U.S.A. FAU - Janes, J M AU - Janes JM AD - Eli Lilly and Company, Indianapolis, IN, U.S.A. LA - eng PT - Clinical Trial, Phase II PT - Journal Article PT - Multicenter Study PT - Randomized Controlled Trial DEP - 20160405 PL - England TA - Br J Dermatol JT - The British journal of dermatology JID - 0004041 RN - 0 (Azetidines) RN - 0 (Dermatologic Agents) RN - 0 (Purines) RN - 0 (Pyrazoles) RN - 0 (Sulfonamides) RN - EC 2.7.10.2 (JAK1 protein, human) RN - EC 2.7.10.2 (JAK2 protein, human) RN - EC 2.7.10.2 (Janus Kinase 1) RN - EC 2.7.10.2 (Janus Kinase 2) RN - ISP4442I3Y (baricitinib) SB - IM MH - Azetidines/*administration & dosage/adverse effects MH - Dermatologic Agents/*administration & dosage/adverse effects MH - Dose-Response Relationship, Drug MH - Double-Blind Method MH - Drug Administration Schedule MH - Female MH - Humans MH - Janus Kinase 1/antagonists & inhibitors MH - Janus Kinase 2/antagonists & inhibitors MH - Male MH - Middle Aged MH - Psoriasis/*drug therapy MH - Purines MH - Pyrazoles MH - Sulfonamides/*administration & dosage/adverse effects MH - Treatment Outcome EDAT- 2016/01/23 06:00 MHDA- 2017/06/14 06:00 CRDT- 2016/01/23 06:00 PHST- 2016/01/11 00:00 [accepted] PHST- 2016/01/23 06:00 [entrez] PHST- 2016/01/23 06:00 [pubmed] PHST- 2017/06/14 06:00 [medline] AID - 10.1111/bjd.14403 [doi] PST - ppublish SO - Br J Dermatol. 2016 Jun;174(6):1266-76. doi: 10.1111/bjd.14403. Epub 2016 Apr 5.