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Merck's Tulisokibart Met Primary and Key Secondary Endpoints in Phase 2b Study in Patients With Moderate to Severe Hidradenitis Suppurativa (HS)

$MRKPress releaseSep 30, 2026, 8:15 AM ETRead the release

Merck announced positive Phase 2b results for tulisokibart, an anti-TL1A monoclonal antibody, in moderate to severe hidradenitis suppurativa, meeting the primary HiSCR50 endpoint at week 16 in both high- and medium-dose regimens. High-dose patients achieved a 72% HiSCR50 response rate versus 35% on placebo (a 37-point improvement), with medium-dose at 64%; safety was comparable to placebo with no serious or opportunistic infections observed.

Key figures

Drug Name
tulisokibart (MK-7240)
Phase Of Trial
Phase 2b
Hiscr50 placebo
35%
Hiscr75 placebo
15%
Hiscr50 low dose
52%
Primary endpoint
HiSCR50 at week 16
Hiscr50 high dose
72%
Hiscr75 high dose
41%
Serious ae placebo
2.3%
Hiscr50 medium dose
64%
Hiscr75 medium dose
40%
Serious ae high dose
2.4%

AI analysis

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    MRK: Merck's Tulisokibart Met Primary and Key Secondary Endpoints in Phase 2b Study in Patients With Moderate to Severe Hidradenitis Suppurativa (HS) — AI Analysis | Signal8