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Bristol Myers Squibb Presents Analyses from Pivotal QUAZAR® AML-001 Study of Onureg® (azacitidine tablets; CC-486) in Adults with Acute Myeloid Leukemia in First Remission

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Analysis showed treatment with Onureg improved overall survival in patients with both measurable residual disease (MRD) positive status and MRD negative status compared to placebo from the time of randomization

Additional analysis showed improved overall survival in patients independent of number of consolidation treatment cycles received compared to placebo

Bristol Myers Squibb (NYSE: BMY) today announced new results from the QUAZAR® AML-001 study presented at the 62nd American Society of Hematology (ASH) Annual Meeting and Exposition, evaluating Onureg® (azacitidine tablets; CC-486), an oral hypomethylating agent, as a treatment for adult patients with acute myeloid leukemia (AML) who achieved first complete remission (CR) or CR with incomplete blood count recovery (CRi) following intensive induction chemotherapy. Results demonstrated treatment with Onureg improved overall survival (OS), the primary endpoint of the study, as well as showed clinical benefit across other key secondary endpoints, compared to placebo, in patients with AML in first remission.

A longitudinal assessment of measurable residual disease (MRD) status from QUAZAR® AML-001 evaluated treatment with Onureg in patients with both MRD positive (MRD+) and MRD negative (MRD-) status at baseline. The MRD evaluable cohort comprised 463/472 randomized patients (Onureg, N=236; placebo, N=227).

  • Median OS was prolonged with Onureg compared with placebo in patients who were either MRD+ (median 14.6 vs. 10.4 months, respectively; HR: 0.69 [95% CI: 0.51, 0.93]) or MRD- (median 30.1 vs. 24.3 months; HR: 0.81 [0.59, 1.12]) at baseline.

  • The median duration of MRD negativity was extended with Onureg vs. placebo (11.0 vs. 5.0 months, respectively; HR: 0.62 [95% CI: 0.48, 0.78]). Treatment with Onureg also resulted in a higher rate of MRD response (MRD+ to MRD-) vs. placebo: 37% vs. 19%, respectively.

  • Median relapse-free survival (RFS) was extended with Onureg for both MRD+ (7.1 vs. 2.7 months, respectively; HR: 0.58 [95% CI: 0.43, 0.78]) and MRD- patients (13.4 vs. 7.8 months; HR: 0.71 [0.52, 0.98]).

  • The MRD assay used in the QUAZAR® AML-001 study is not part of the label recently approved by the U.S. Food and Drug Administration (FDA) for Onureg as a continued treatment for adult patients with AML who achieved first CR or CRi following intensive induction chemotherapy and who are not able to complete intensive curative therapy.

Results from a separate post-hoc analysis evaluated treatment with Onureg in patients from the QUAZAR® AML-001 study who had a range of prior consolidation chemotherapy cycles.

  • 472 patients were randomized to Onureg (N=238) or placebo (N=234) and most patients (80%) received consolidation before study entry. Common agents used for consolidation were cytarabine, idarubicin and daunorubicin.

  • In the cohort where no prior consolidation was administered, median OS with Onureg (N=52) vs. placebo (N=42) was 23.3 vs. 10.9 months, respectively (HR: 0.55 [95% CI: 0.34, 0.89]), and median RFS was 8.4 vs. 3.9 months (0.55 [0.34, 0.88]).

  • In the cohort of patients who received one cycle of consolidation treatment, median OS was 21.0 vs. 14.3 months with Onureg (N=110) vs. placebo (N=102), respectively (HR: 0.75 [95% CI: 0.55, 1.02]), and median RFS was 10.0 vs. 4.7 months (0.72 [0.53, 0.99]).

  • In the ≥2 consolidations cohort, median OS was 28.6 months with Onureg (N=76) vs. 17.6 months with placebo (N=90) (HR: 0.75 [95% CI: 0.50, 1.11]), and median RFS was 13.0 vs. 6.1 months (0.59 [0.41, 0.87]).

"These analyses from the QUAZAR® AML-001 study provide further insight into the clinical activity of Onureg and its potential role in the treatment paradigm of patients with acute myeloid leukemia in first remission following intensive chemotherapy," said Andrew Wei, MBBS, Ph.D., QUAZAR® AML-001 lead investigator, Alfred Hospital and Monash University, Melbourne, Australia. "Persistence of acute myeloid leukemia is frequently measurable after intensive chemotherapy, and these new analyses from the pivotal trial demonstrate that Onureg can improve survival in patients with or without measurable residual disease, and across a range of consolidation cycles."

An additional post-hoc analysis showed treatment with Onureg was associated with reduced risk of hospitalization events and days in hospital, as well as estimated cost savings associated with hospitalizations, compared with placebo. Hospitalization events in the study were collected starting from informed consent signature through 28 days after the last intraperitoneal (IP) dose. Rates of hospitalization and days in hospital were adjusted for duration of Onureg and placebo exposure. 469 patients received Onureg (N=236) or placebo (N=233). In all, 108 patients (45.8%) in the Onureg arm and 118 (50.6%) in the placebo arm were hospitalized. The analysis showed that Onureg reduced exposure-related rate of hospitalization and days in hospital compared to placebo in the QUAZAR® AML-001 study. Additionally, the analysis showed that extended remission periods with Onureg compared to placebo may translate into hospitalization-related cost reductions due to reduced rates of hospitalization and days in the hospital.

"New data we’re presenting for Onureg at ASH highlight its potential to improve long-term outcomes for people living with this aggressive blood cancer," said Samit Hirawat, M.D., executive vice president, chief medical officer, global drug development, Bristol Myers Squibb. "Moreover, oral treatment options like Onureg that can be taken at home are even more important than ever before for patients."

About QUAZAR® AML-001

QUAZAR® AML-001, is a Phase 3, international, randomized, double-blind study. Eligible patients were ages 55 years or older, had newly diagnosed AML, intermediate or poor cytogenetics, had achieved first CR or CRi following intensive induction chemotherapy with or without consolidation treatment (per investigator preference prior to study entry) within four months before randomization, and were not candidates for hematopoietic stem cell transplant (HSCT) at the time of screening. The study enrolled 472 patients, randomized 1:1 to receive either Onureg 300 mg (N=238) or placebo (N=234) orally, once daily, for 14 days of a 28-day cycle, plus best supportive care.1

About AML

There will be nearly 20,000 new cases of acute myeloid leukemia (AML) in the United States this year, accounting for 1.1% of all cancer cases, with an estimated 11,180 deaths resulting from the disease. There were an estimated 64,500 people living with AML in the United States in 2017.2 AML is one of the most common acute leukemias in adults. AML is characterized by the rapid growth of abnormal cells in the bone marrow and as such interferes with normal blood cell production and function. Because of the impaired production of red blood cells, platelets and white blood cells, it can present with signs of anemia, bleeding and infections.3 AML is a heterogeneous disease associated with diverse genetic mutations, and can rapidly progress and lead to death if not promptly treated.4 AML response to treatment may be of short duration, meaning following patients' initial response to chemotherapy, there is still a very high risk of relapse, thus representing a significant unmet need for continued treatment options that prolong overall survival.5

About Onureg®

Onureg, the first and only FDA-approved continued AML treatment for patients in first remission, is an oral hypomethylating agent that incorporates into DNA and RNA. The main mechanism of action is thought to be hypomethylation of DNA, as well as direct cytotoxicity to abnormal hematopoietic cells in the bone marrow. Hypomethylation may restore normal function to genes that are critical for cell differentiation and proliferation.6,7

INDICATION

  • ONUREG is indicated for continued treatment of adult patients with acute myeloid leukemia who achieved first complete remission (CR) or complete remission with incomplete blood count recovery (CRi) following intensive induction chemotherapy and are not able to complete intensive curative therapy.

IMPORTANT SAFETY INFORMATION

CONTRAINDICATIONS

  • ONUREG is contraindicated in patients with known severe hypersensitivity to azacitidine or its components.

WARNINGS AND PRECAUTIONS

  • Risks of Substitution with Other Azacitidine Products: Due to substantial differences in the pharmacokinetic parameters, the recommended dose and schedule for ONUREG are different from those for the intravenous or subcutaneous azacitidine products. Treatment of patients using intravenous or subcutaneous azacitidine at the recommended dosage of ONUREG may result in a fatal adverse reaction. Treatment with ONUREG at the doses recommended for intravenous or subcutaneous azacitidine may not be effective. Do not substitute ONUREG for intravenous or subcutaneous azacitidine.

  • Myelosuppression: New or worsening Grade 3 or 4 neutropenia and thrombocytopenia occurred in 49% and 22% of patients who received ONUREG. Febrile neutropenia occurred in 12%. A dose reduction was required for 7% and 2% of patients due to neutropenia and thrombocytopenia. Less than 1% of patients discontinued ONUREG due to either neutropenia or thrombocytopenia. Monitor complete blood counts and modify the dosage as recommended. Provide standard supportive care, including hematopoietic growth factors, if myelosuppression occurs.

  • Increased Early Mortality in Patients with Myelodysplastic Syndromes (MDS): In AZA-MDS-003, 216 patients with red blood cell transfusion-dependent anemia and thrombocytopenia due to MDS were randomized to ONUREG or placebo. 107 received a median of 5 cycles of ONUREG 300 mg daily for 21 days of a 28-day cycle. Enrollment was discontinued early due to a higher incidence of early fatal and/or serious adverse reactions in the ONUREG arm compared with placebo. The most frequent fatal adverse reaction was sepsis. Safety and effectiveness of ONUREG for MDS have not been established. Treatment of MDS with ONUREG is not recommended outside of controlled trials.

  • Embryo-Fetal Toxicity: ONUREG can cause fetal harm when administered to a pregnant woman. Azacitidine caused fetal death and anomalies in pregnant rats via a single intraperitoneal dose less than the recommended human daily dose of oral azacitidine on a mg/m2 basis. Advise pregnant women of the potential risk to a fetus. Advise females of reproductive potential to use effective contraception during treatment with ONUREG and for at least 6 months after the last dose. Advise males with female partners of reproductive potential to use effective contraception during treatment with ONUREG and for at least 3 months after the last dose.

ADVERSE REACTIONS

  • Serious adverse reactions occurred in 15% of patients who received ONUREG. Serious adverse reactions in ≥2% included pneumonia (8%) and febrile neutropenia (7%). One fatal adverse reaction (sepsis) occurred in a patient who received ONUREG.

  • Most common (≥10%) adverse reactions with ONUREG vs placebo were nausea (65%, 24%), vomiting (60%, 10%), diarrhea (50%, 21%), fatigue/asthenia (44%, 25%), constipation (39%, 24%), pneumonia (27%, 17%), abdominal pain (22%, 13%), arthralgia (14%, 10%), decreased appetite (13%, 6%), febrile neutropenia (12%, 8%), dizziness (11%, 9%), pain in extremity (11%, 5%).

LACTATION

  • There are no data regarding the presence of azacitidine in human milk or the effects on the breastfed child or milk production. Because of the potential for serious adverse reactions in the breastfed child, advise women not to breastfeed during treatment with ONUREG and for 1 week after the last dose.

Please see full Prescribing Information for ONUREG.

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.

Celgene and Juno Therapeutics are wholly owned subsidiaries of Bristol-Myers Squibb Company. In certain countries outside the U.S., due to local laws, Celgene and Juno Therapeutics are referred to as, Celgene, a Bristol Myers Squibb company and Juno Therapeutics, a Bristol Myers Squibb company.

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 on historical performance and 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, whether Onureg for the indication described in this release will be commercially successful and that continued approval of such product candidate for such indication described in this release may be contingent upon verification and description of clinical benefit in confirmatory trials. 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, 2019, 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:

  1. Onureg Prescribing Information. Onureg U.S. Product Information. Last updated: September 2020. Princeton, NJ: Bristol-Myers Squibb Company.

  2. SEER. Cancer Stat Facts: Leukemia — Acute Myeloid Leukemia (AML). https://seer.cancer.gov/statfacts/html/amyl.html. Accessed on: July 23, 2020.

  3. SEER. Adult Acute Myeloid Leukemia Treatment (PDQ®)–Patient Version. https://www.cancer.gov/types/leukemia/patient/adult-aml-treatment-pdq. Accessed on: July 23, 2020.

  4. Int J Hematol Oncol Stem Cell Res. Acute Myeloid Leukemia—Genetic Alterations and Their Clinical Prognosis. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5767295/.

  5. American Cancer Society. Typical Treatment of Acute Myeloid Leukemia (Except APL). https://www.cancer.org/cancer/acute-myeloid-leukemia/treating/typical-treatment-of-aml.html. Accessed on: July 23, 2020.

  6. Garcia-Manero et al. J Clin Oncol. 2011;29(18):2521–7.

  7. Laille et al. PLoS One. 2015;10(8):e0135520.

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