Bristol Myers Squibb Announces ZENBEXUS In Combination With Daratumumab And Dexamethasone Demonstrates Superior Progression-Free Survival Vs. Standard Of Care In Relapsed And Refractory Multiple Myeloma In Phase 3 EXCALIBER-RRMM Study
Bristol Myers Squibb's Phase 3 EXCALIBER-RRMM study showed ZENBEXUS (iberdomide) with daratumumab and dexamethasone improved progression-free survival in relapsed/refractory multiple myeloma vs. standard care. The trial included 800 patients, with 16-month median follow-up. ZENBEXUS has accelerated approval for multiple myeloma treatment.
How this was made
The 30-second read
Why it matters
The trial met its primary endpoints, showing superior PFS and MRD negativity, positioning the drug for potential approval and market entry.
Market read
Positive Phase 3 results are a catalyst for BMY stock and may influence oncology biotech valuations.
What to watch
High rates of serious infections and neutropenia could temper enthusiasm and affect market perception.
Background
Bristol Myers Squibb announced Phase 3 data for ZENBEXUS (iberdomide) in combination therapy for relapsed/refractory multiple myeloma.
Ticker impact
Phase 3 EXCALIBER-RRMM trial shows ZENBEXUS combo improves progression‑free survival versus standard of care in RRMM.
upward pressure as market prices in superior PFS results
Phase 3 data is material for a late‑stage oncology asset; superior efficacy drives upside expectations.
Market effects
May boost broader multiple‑myeloma and oncology biotech sector as a new effective regimen emerges.
Positive for US biotech market; limited immediate impact on other regions.
Adds to global pipeline confidence for immunomodulatory therapies.
Counterpoint
Investors may wait for FDA decision and long‑term safety data before pricing in the upside.
Key entities
- companyBristol Myers Squibb
Pharmaceutical company developing ZENBEXUS.
- drugZENBEXUS (iberdomide)
Investigational oral cereblon E3 ligase modulator for multiple myeloma.

