Number Needed to Treat Network Meta-Analysis to Compare Biologic Drugs for Moderate-to-Severe Psoriasis

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INTRODUCTION: Number needed to treat (NNT) estimates are a practical metric to help identify the most effective therapies. Our objective is to compare 11 biologic drugs for moderate-to-severe psoriasis in terms of NNT. METHODS: The NNT data were obtained from a Bayesian network meta-analysis of 42 double-blind, randomized, phase 3 clinical trials for 11 biologics (adalimumab, brodalumab, certolizumab pegol, etanercept, guselkumab, infliximab, ixekizumab, risankizumab, secukinumab, tildrakizumab, and ustekinumab). We determined NNT to achieve Psoriasis Area and Severity Index (PASI) 75/90/100 responses at weeks 4, 8, 12, 16, and 48/52 and Dermatology Life Quality Index (DLQI) response 0, 1 at week 12. RESULTS: Highest efficacy (lowest NNT) was with brodalumab and ixekizumab for PASI 90 at weeks 4, 8, and 12; ixekizumab for PASI 90/100 at week 16; and brodalumab for PASI 100 at week 12. After 48/52 weeks, risankizumab had the highest efficacy for PASI 90/100 overlapping with guselkumab, brodalumab, and ixekizumab for PASI 90 and with brodalumab and ixekizumab for PASI 100. Ixekizumab had the highest efficacy for DLQI (0,1) at week 12. CONCLUSIONS: Brodalumab and ixekizumab had the lowest NNTs for achieving PASI responses at early time points and were not significantly different than risankizumab and guselkumab after 48/52 weeks.

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