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--In the pivotal BEYOND study, Reblozyl significantly increased hemoglobin levels, which were sustained over longer time compared to placebo

Bristol Myers Squibb (NYSE: BMY) today announced the Committee for Medicinal Products for Human Use (CHMP) of the European Medicines Agency has recommended approval of Reblozyl(R) (luspatercept) as a treatment for adult patients with anemia associated with non'transfusion-dependent (NTD) beta thalassemia. The recommendation will now be reviewed by the European Commission (EC), which has the authority to approve medicines for use in the European Union (EU). Upon approval, this would represent the third authorized indication for Reblozyl in the EU.

The CHMP adopted a positive opinion based on results from the pivotal Phase 2 BEYOND study, evaluating the efficacy and safety of Reblozyl versus placebo in 145 adults with NTD beta thalassemia. Patients were eligible to receive best supportive care, including red blood cell transfusions, iron-chelating agents, use of antibiotic, antiviral, and antifungal therapy, and/or nutritional support, as needed.

Reblozyl is an erythroid maturation agent approved in the EU, the United States, China and Canada to address anemia-associated, transfusion-dependent beta thalassemia and transfusion-dependent lower-risk myelodysplastic syndromes, representing an important class of therapy for eligible patients.

"Beta thalassemia is an inherited blood disorder that puts patients at significant risk for long-term clinical complications that can impair their quality of life, regardless of whether they require regular blood transfusions," said Noah Berkowitz, M.D., Ph.D., senior vice president, Hematology Development, Bristol Myers Squibb. "Results from the BEYOND study showed Reblozyl improved anemia associated with non-transfusion-dependent beta thalassemia by sustaining hemoglobin increases in 77% of patients regardless of their baseline hemoglobin status. The potential approval of Reblozyl for patients with non-transfusion-dependent beta thalassemia represents an important development in the EU where several countries present with a high prevalence and where more people are impacted by the disease."

The EC is expected to deliver its final decision within 67 days of receipt of the CHMP opinion. The decision will be applicable to all EU member states, Iceland, Norway and Liechtenstein.*

Reblozyl is being developed and commercialized through a global collaboration with Merck following Merck's acquisition of Acceleron Pharma, Inc. in November 2021.

*Centralized Marketing Authorization does not include approval in Great Britain (England, Scotland and Wales).

About BEYOND

BEYOND (NCT03342404) is a Phase 2, double-blind, randomized, placebo-controlled, multicenter study to determine the efficacy and safety of luspatercept (ACE-536) versus placebo in adults with non-transfusion-dependent beta thalassemia. The study is divided into the Screening Period, Double-blind Treatment Period (DBTP), Open-label Phase (OLP), and Post-Treatment Follow-up Period (PTFP) and randomized 145 subjects at a 2:1 ratio of Reblozyl versus placebo. All patients were eligible to receive best supportive care, which included red blood cell transfusions; iron-chelating agents; use of antibiotic, antiviral, and antifungal therapy; and/or nutritional support, as needed. The primary endpoint of the study is the proportion of subjects who have an increase from baseline greater-than or equal to1.0 g/dL in mean of hemoglobin values over a continuous 12-week interval from Week 13 to Week 24 of treatment in the absence of transfusions. Key secondary endpoints include mean change in non-transfusion-dependent beta thalassemia-patient reported outcome (NTDT-PRO) Tiredness and Weakness (TW) domain score and baseline hemoglobin (Hb).

Results demonstrated 74 of 96 (77.1%) patients in the Reblozyl treatment arm achieved the study's primary endpoint, greater-than or equal to1.0 g/dL mean Hb increase from baseline, versus 0 of 49 (0%) patients in the placebo arm (P<0.0001).

In a key secondary endpoint of the study, 47 of 96 patients (49.0%) treated with Reblozyl achieved mean Hb increase of greater-than or equal to1.5 g/dL compared to baseline from Week 37-48 in the absence of transfusions versus 0 patients (0%) in the placebo arm. In the Reblozyl arm, 89.6% of patients remained transfusion free at weeks 1-24 versus 67.3% of patients in the placebo arm. Improvements in patient reported quality of life outcomes (tiredness and weakness) were also observed to correlate with Hb increases.

Serious adverse reactions occurred in 11.5% of patients (n=11) who received Reblozyl and in 25% of patients (n=24) who received placebo. The most common adverse reactions occurring in greater-than or equal to10% of patients treated with Reblozyl were bone pain (36%), headache (30%), arthralgia (29%), back pain (28%), prehypertension (23%), hypertension (20%), cough (18%), diarrhea (17%), influenza-like illness (17%), asthenia (13%), influenza (13%), insomnia (11%) and nausea (10%).

About Beta Thalassemia

Beta thalassemia is an inherited blood disorder caused by a genetic defect in hemoglobin. It is one of the most common autosomal recessive disorders, and the total annual incidence of symptomatic individuals is estimated at 1 in 100,000 people globally.(1,2) The disease is associated with ineffective erythropoiesis, which results in the production of fewer and less healthy red blood cells, often leading to severe anemia--a condition that can be debilitating and can lead to other complications for patients--as well as other serious health issues such as iron overload.(3) Treatment options for anemia associated with beta thalassemia are limited, consisting mainly of frequent red blood cell transfusions and iron chelation therapy, and have the potential to contribute to iron overload, which can cause serious complications such as organ damage.(1) Non-transfusion-dependent beta thalassemia is a term used to describe patients who do not require lifelong regular transfusions for survival, though they may experience a range of significant clinical complications and require intermittent or more frequent transfusions for defined periods of time.(4)

About Reblozyl(R)

Reblozyl, a first-in-class therapeutic option, promotes late-stage red blood cell maturation in animal models.(1)Reblozyl is being developed and commercialized through a global collaboration with Merck following Merck's acquisition of Acceleron Pharma, Inc. in November 2021. Reblozyl is currently approved in the U.S. for the treatment of:

anemia in adult patients with beta thalassemia who require regular red blood cell transfusions, and anemia failing an erythropoiesis stimulating agent and requiring 2 or more red blood cell units over 8 weeks in adult patients with very low- to intermediate-risk myelodysplastic syndrome with ring sideroblasts (MDS-RS) or with myelodysplastic/myeloproliferative neoplasm with ring sideroblasts and thrombocytosis (MDS/MPN-RS-T).

Reblozyl is not indicated for use as a substitute for red blood cell transfusions in patients who require immediate correction of anemia.

Important Safety Information

WARNINGS AND PRECAUTIONS

Thrombosis/Thromboembolism

In adult patients with beta thalassemia, thromboembolic events (TEE) were reported in 8/223 (3.6%) REBLOZYL-treated patients. TEEs included deep vein thrombosis, pulmonary embolus, portal vein thrombosis, and ischemic stroke. Patients with known risk factors for thromboembolism (splenectomy or concomitant use of hormone replacement therapy) may be at further increased risk of thromboembolic conditions. Consider thromboprophylaxis in patients at increased risk of TEE. Monitor patients for signs and symptoms of thromboembolic events and institute treatment promptly.

Hypertension

Hypertension was reported in 10.7% (61/571) of REBLOZYL-treated patients. Across clinical studies, the incidence of Grade 3 to 4 hypertension ranged from 1.8% to 8.6%. In patients with beta thalassemia with normal baseline blood pressure, 13 (6.2%) patients developed systolic blood pressure (SBP) greater-than or equal to130 mm Hg and 33 (16.6%) patients developed diastolic blood pressure (DBP) greater-than or equal to80 mm Hg. In adult patients with MDS with normal baseline blood pressure, 26 (29.9%) patients developed SBP greater-than or equal to130 mm Hg and 23 (16.4%) patients developed DBP greater-than or equal to80 mm Hg. Monitor blood pressure prior to each administration. Manage new or exacerbations of preexisting hypertension using anti-hypertensive agents.

Extramedullary Hematopoietic Masses

In adult patients with transfusion-dependent beta thalassemia, EMH masses were observed in 3.2% of REBLOZYL-treated patients, with spinal cord compression symptoms due to EMH masses occurring in 1.9% of patients (BELIEVE and REBLOZYL long-term follow-up study).

In a study of adult patients with non-transfusion-dependent beta thalassemia, a higher incidence of EMH masses was observed in 6.3% of REBLOZYL-treated patients vs. 2% of placebo-treated patients in the double- blind phase of the study, with spinal cord compression due to EMH masses occurring in 1 patient with a prior history of EMH. REBLOZYL is not indicated for use in patients with non-transfusion-dependent beta thalassemia.

Possible risk factors for the development of EMH masses in patients with beta thalassemia include history of EMH masses, splenectomy, splenomegaly, hepatomegaly, or low baseline hemoglobin (3 (greater-than or equal to2%) adverse reactions included fatigue, hypertension, syncope and musculoskeletal pain. A fatal adverse reaction occurred in 5 (2.1%) patients. The most common (greater-than or equal to10%) adverse reactions included fatigue, musculoskeletal pain, dizziness, diarrhea, nausea, hypersensitivity reactions, hypertension, headache, upper respiratory tract infection, bronchitis, and urinary tract infection.

LACTATION

It is not known whether REBLOZYL is excreted into human milk or absorbed systemically after ingestion by a nursing infant. REBLOZYL was detected in milk of lactating rats. When a drug is present in animal milk, it is likely that the drug will be present in human milk. Because many drugs are excreted in human milk, and because of the unknown effects of REBLOZYL in infants, a decision should be made whether to discontinue nursing or to discontinue treatment. Because of the potential for serious adverse reactions in the breastfed child, breastfeeding is not recommended during treatment and for 3 months after the last dose.

Please see full Prescribing Information and Summary of Product Characteristics for REBLOZYL.

Bristol Myers Squibb: Creating a Better Future for People with Cancer

Bristol Myers Squibb is inspired by a single vision -- transforming people's lives through science. The goal of the company's cancer research is to deliver medicines that offer each patient a better, healthier life and to make cure a possibility. Building on a legacy across a broad range of cancers that have changed survival expectations for many, Bristol Myers Squibb researchers are exploring new frontiers in personalized medicine, and through innovative digital platforms, are turning data into insights that sharpen their focus. Deep scientific expertise, cutting-edge capabilities and discovery platforms enable the company to look at cancer from every angle. Cancer can have a relentless grasp on many parts of a patient's life, and Bristol Myers Squibb is committed to taking actions to address all aspects of care, from diagnosis to survivorship. Because as a leader in cancer care, Bristol Myers Squibb is working to empower all people with cancer to have a better future.

About Bristol Myers Squibb

Bristol Myers Squibb is a global biopharmaceutical company whose mission is to discover, develop and deliver innovative medicines that help patients prevail over serious diseases. For more information about Bristol Myers Squibb, visit us at BMS.com or follow us on LinkedIn, Twitter, YouTube, Facebook and Instagram.

Cautionary Statement Regarding Forward-Looking Statements

This press release contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995 regarding, among other things, the research, development and commercialization of pharmaceutical products. All statements that are not statements of historical facts are, or may be deemed to be, forward-looking statements. Such forward-looking statements are based current expectations and projections about our future financial results, goals, plans and objectives and involve inherent risks, assumptions and uncertainties, including internal or external factors that could delay, divert or change any of them in the next several years, that are difficult to predict, may be beyond our control and could cause our future financial results, goals, plans and objectives to differ materially from those expressed in, or implied by, the statements. These risks, assumptions, uncertainties and other factors include, among others, that the CHMP opinion is not binding on the EC, that Reblozyl(R) (luspatercept) may not receive regulatory approval for the additional indication described in this release in the currently anticipated timeline or at all, that any marketing approvals, if granted, may have significant limitations on their use, and, if approved, whether such product candidate for such additional indication described in this release will be commercially successful. No forward-looking statement can be guaranteed. Forward-looking statements in this press release should be evaluated together with the many risks and uncertainties that affect Bristol Myers Squibb's business and market, particularly those identified in the cautionary statement and risk factors discussion in Bristol Myers Squibb's Annual Report on Form 10-K for the year ended December 31, 2021, as updated by our subsequent Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and other filings with the Securities and Exchange Commission. The forward-looking statements included in this document are made only as of the date of this document and except as otherwise required by applicable law, Bristol Myers Squibb undertakes no obligation to publicly update or revise any forward-looking statement, whether as a result of new information, future events, changed circumstances or otherwise.

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References:

Galanello R, Origa R. Beta thalassemia. Orphanet Journal of Rare Diseases. 2010;5(11). Available at: https://ojrd.biomedcentral.com/articles/10.1186/1750-1172-5-11. Accessed February 2022. Iolascon, A., et al. (2019, June). EHA research roadmap on hemoglobinopathies and thalassemia: Hemasphere. https://journals.lww.com/hemasphere/fulltext/2019/06000/eha_research_roadmap_on_hemoglobinopathies_and.4.aspx#:~:text=The%20annual%20incidence%20of%20symptomatic,1%20in%2010%2C000%20in%20Europe.&text=Migrations%20from%20endemic%20areas%20to,thalassemia%20in%20large%20urban%20centers. Accessed November 2022. Rivella, S. (2013). Ineffective erythropoiesis and thalassemias. Available at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3703923/pdf/nihms-490109.pdf. Accessed February 2022. Musallam, K. M., Rivella, S., Vichinsky, E., & Rachmilewitz, E. A. (2013). Non-transfusion-dependent thalassemias. Haematologica, 98(6), 833-844. https://doi.org/10.3324/haematol.2012.066845. Accessed February 2022.

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