Bristol Myers Experiences Another Setback as Heart Drug Milvexian Proves Ineffective
Written by Emily J. Thompson, Senior Investment Analyst
Updated: Nov 14 2025
0mins
Source: Benzinga
Trial Discontinuation: Bristol Myers Squibb and Johnson & Johnson have halted the Phase 3 Librexia ACS trial for milvexian due to an interim analysis indicating it is unlikely to meet its primary efficacy endpoint, although no new safety concerns were identified.
Impact on Other Trials: The Independent Data Monitoring Committee recommended that two other Phase 3 trials in the Librexia program continue as planned, with results expected in 2026, despite concerns about the implications for the LIBREXIA-STROKE study.
Analyst Insights: Analysts view the setback in the ACS trial as a modest negative signal for the LIBREXIA-STROKE study, while the atrial fibrillation trial is seen as having a larger market opportunity and may be less affected.
Stock Performance: Following the announcement, Bristol Myers Squibb shares fell by 3.59%, reflecting investor concerns over the trial's discontinuation and the company's recent challenges with multiple late-stage trial setbacks.
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Analyst Views on BMY
Wall Street analysts forecast BMY stock price to fall
20 Analyst Rating
8 Buy
11 Hold
1 Sell
Moderate Buy
Current: 60.650
Low
37.00
Averages
55.86
High
68.00
Current: 60.650
Low
37.00
Averages
55.86
High
68.00
About BMY
Bristol-Myers Squibb Company is a global biopharmaceutical company. It is engaged in the discovery, development and delivery of transformational medicines for patients facing serious diseases in areas: oncology, hematology, immunology, cardiovascular, neuroscience and other areas. Its growth portfolio includes Opdivo (nivolumab), Opdivo Qvantig (nivolumab and hyaluronidase-nvhy), Yervoy (ipilimumab), Reblozyl (luspatercept-aamt), Opdualag (nivolumab and relatlimab-rmbw), Breyanzi (lisocabtagene maraleucel), Camzyos (mavacamten), Zeposia (ozanimod), Abecma (idecabtagene vicleucel), and Sotyktu (deucravacitinib). Its other growth products include Onureg, Inrebic, and Empliciti. Its legacy portfolio includes Eliquis (apixaban), Revlimid (lenalidomide), Pomalyst/Imnovid (pomalidomide), Sprycel (dasatinib), and Abraxane (paclitaxel albumin-bound particles for injectable suspension). Opdivo (nivolumab) is a fully human monoclonal antibody that binds to the PD-1 on T and NKT cells.
About the author
Emily J. Thompson
Emily J. Thompson, a Chartered Financial Analyst (CFA) with 12 years in investment research, graduated with honors from the Wharton School. Specializing in industrial and technology stocks, she provides in-depth analysis for Intellectia’s earnings and market brief reports.
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- Clinical Trial Results: Bristol Myers Squibb's heart drug Camzyos demonstrated significant efficacy in a Phase 3 trial involving adolescents aged 12 to 17, effectively reducing heart pressure and improving heart function and symptoms, indicating its potential to be the first approved treatment for rare heart disease in this demographic.
- Patient Improvement: Among the 44 patients in the trial, those treated with Camzyos exhibited consistent improvements across various heart performance metrics, including reduced obstruction and changes in heart structure, highlighting the drug's effectiveness and potential market in adolescent patients.
- Safety Assessment: The safety profile of Camzyos was encouraging, with side effect rates similar between the drug and placebo groups, and no new safety concerns identified during the study, further bolstering its prospects for use in younger patients.
- Future Research Plans: Bristol Myers Squibb intends to continue studying Camzyos and present longer-term results in the future; if approved by regulators, the drug could provide a new treatment option for adolescents, potentially improving symptoms and reducing the need for more invasive procedures.
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- Safety Profile: The safety profile of Camzyos in adolescents was comparable to that in adults, with no new safety signals identified and no patients experiencing left ventricular ejection fraction (LVEF) below 50%, providing reassurance for its use in this population.
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- High Patient Completion Rate: Approximately 86% of patients completed the 8-week treatment, with discontinuation rates of 15.1% in the slower and 13.5% in the faster transition groups, and no patients discontinued due to lack of efficacy, showcasing Cobenfy's good tolerability.
- Significant Symptom Improvement: The mean change in PANSS total scores was -4.2 for the slower transition group and -3.1 for the faster group, with both groups showing a CGI-S score change of -0.2, indicating notable symptom improvement and supporting Cobenfy's clinical application potential.
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