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Nurix Therapeutics Announces First Patient Enrolled in Registrational Phase 3 DAYBreak CLL-306 Trial of Bexobrutideg in Relapsed/Refractory Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma

$NRIXPress releaseAug 4, 2026, 1:00 AM ETRead the release

Nurix Therapeutics and partner Roche have enrolled the first patient in the global Phase 3 DAYBreak CLL-306 trial evaluating Bexobrutideg for relapsed/refractory CLL/SLL. This is the first registrational Phase 3 trial for Bexobrutideg, a targeted protein degrader of BTK, and is designed to demonstrate superiority versus the current standard of care, pirtobrutinib.

Key figures

Drug Name
Bexobrutideg (NX-5948)
Phase Of Trial
Phase 3
Comparator drug
pirtobrutinib
Patients targeted
620
Primary endpoints
objective response rate (ORR) and progression free survival (PFS)
Randomization ratio
1:1

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