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CLINICAL TRIAL, PHASE II
COMPARATIVE STUDY
JOURNAL ARTICLE
MULTICENTER STUDY
RANDOMIZED CONTROLLED TRIAL
RESEARCH SUPPORT, NON-U.S. GOV'T
Phase 2 Trial of Selective Tyrosine Kinase 2 Inhibition in Psoriasis.
New England Journal of Medicine 2018 October 5
BACKGROUND: Tyrosine kinase 2 (TYK2) signaling pathways, which mediate cytokine signaling, are implicated in the pathophysiology of psoriasis. Selective inhibitors of TYK2 may be effective in treating psoriasis.
METHODS: We conducted a phase 2, double-blind trial of a TYK2 inhibitor, BMS-986165, in adults with moderate-to-severe psoriasis, excluding patients with a previous lack of response to agents targeting cytokine signaling through the same tyrosine kinase pathway. Patients were randomly assigned to receive the drug orally at a dose of 3 mg every other day, 3 mg daily, 3 mg twice daily, 6 mg twice daily, or 12 mg daily or to receive placebo. The primary end point was a 75% or greater reduction from baseline in the Psoriasis Area and Severity Index (PASI) score at week 12 (higher scores indicate greater severity of psoriasis).
RESULTS: A total of 267 patients received at least one dose in an intervention group of the trial. At week 12, the percentage of patients with a 75% or greater reduction in the PASI score was 7% (3 of 45 patients) with placebo, 9% (4 of 44 patients) with 3 mg of BMS-986165 every other day (P=0.49 vs. placebo), 39% (17 of 44 patients) with 3 mg daily (P<0.001 vs. placebo), 69% (31 of 45 patients) with 3 mg twice daily (P<0.001 vs. placebo), 67% (30 of 45 patients) with 6 mg twice daily (P<0.001 vs. placebo), and 75% (33 of 44 patients) with 12 mg daily (P<0.001 vs. placebo). There were three serious adverse events in patients receiving the active drug, as well as one case of malignant melanoma 96 days after the start of treatment.
CONCLUSIONS: Selective inhibition of TYK2 with the oral agent BMS-986165 at doses of 3 mg daily and higher resulted in greater clearing of psoriasis than did placebo over a period of 12 weeks. Larger and longer-duration trials of this drug are required to determine its safety and durability of effect in patients with psoriasis. (Funded by Bristol-Myers Squibb; ClinicalTrials.gov number, NCT02931838 .).
METHODS: We conducted a phase 2, double-blind trial of a TYK2 inhibitor, BMS-986165, in adults with moderate-to-severe psoriasis, excluding patients with a previous lack of response to agents targeting cytokine signaling through the same tyrosine kinase pathway. Patients were randomly assigned to receive the drug orally at a dose of 3 mg every other day, 3 mg daily, 3 mg twice daily, 6 mg twice daily, or 12 mg daily or to receive placebo. The primary end point was a 75% or greater reduction from baseline in the Psoriasis Area and Severity Index (PASI) score at week 12 (higher scores indicate greater severity of psoriasis).
RESULTS: A total of 267 patients received at least one dose in an intervention group of the trial. At week 12, the percentage of patients with a 75% or greater reduction in the PASI score was 7% (3 of 45 patients) with placebo, 9% (4 of 44 patients) with 3 mg of BMS-986165 every other day (P=0.49 vs. placebo), 39% (17 of 44 patients) with 3 mg daily (P<0.001 vs. placebo), 69% (31 of 45 patients) with 3 mg twice daily (P<0.001 vs. placebo), 67% (30 of 45 patients) with 6 mg twice daily (P<0.001 vs. placebo), and 75% (33 of 44 patients) with 12 mg daily (P<0.001 vs. placebo). There were three serious adverse events in patients receiving the active drug, as well as one case of malignant melanoma 96 days after the start of treatment.
CONCLUSIONS: Selective inhibition of TYK2 with the oral agent BMS-986165 at doses of 3 mg daily and higher resulted in greater clearing of psoriasis than did placebo over a period of 12 weeks. Larger and longer-duration trials of this drug are required to determine its safety and durability of effect in patients with psoriasis. (Funded by Bristol-Myers Squibb; ClinicalTrials.gov number, NCT02931838 .).
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