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XBiotech Launches Phase II Clinical Trial Evaluating Vilamakitug for the Treatment of Active Axial Spondyloarthritis

$XBITPress releaseJun 15, 2026, 9:00 AM ETRead the release

XBiotech announced that the FDA completed its 30-day review of the IND application for the V-SPINE study without placing a clinical hold, clearing the path for U.S. patient enrollment. The Phase II, double-blind, placebo-controlled trial will evaluate 400 mg of vilamakitug administered via 16 weekly subcutaneous injections in 150 adult participants with active axial spondyloarthritis. The primary endpoint is the proportion of participants achieving an ASAS40 response at Week 16, with a 12-week open-label extension planned for all participants.

Key figures

Drug Name
vilamakitug
Phase Of Trial
Phase II
Dosage
400 mg
Study name
V-SPINE (PT064)
Administration
16 weekly subcutaneous injections
Primary endpoint
ASAS40 response at Week 16
Participant count
150
Prior asset sale value
$1.35 billion

AI analysis

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    XBIT: XBiotech Launches Phase II Clinical Trial Evaluating Vilamakitug for the Treatment of Active Axial Spondyloarthritis — AI Analysis | Signal8