FDA grants accelerated approval to Bristol Myers Squibb’s Zenbexus for relapsed multiple myeloma

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13 August 2026

Bristol Myers Squibb announced that the U.S. Food and Drug Administration has granted accelerated approval to ZENBEXUS™ (iberdomide), in combination with daratumumab and hyaluronidase-fihj and dexamethasone, for the treatment of adult patients with multiple myeloma who have received at least one prior line of therapy including a proteasome inhibitor and an immunomodulatory agent. 

 

The approval was granted under the FDA accelerated approval pathway and is based on minimal residual disease-negative complete response data from the Phase 3 EXCALIBER-RRMM trial. In the primary efficacy population, the ZDd regimen showed an MRD-negative complete response rate of 41% compared with 21% for daratumumab, bortezomib and dexamethasone.
Continued approval may be contingent upon verification and description of clinical benefit in confirmatory trial(s).
ZENBEXUS is described as the first FDA-approved CELMoD therapy, belonging to the class of cereblon-modulating protein degraders, for multiple myeloma.
The prescribing information includes boxed warnings for embryo-fetal toxicity and serious venous and arterial thromboembolism, as well as warnings and precautions related to neutropenia, infections and second primary malignancies. 

 

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