FDA Lifts Partial Clinical Hold on MDS and AML Magrolimab Studies

 U.S. Pivotal Studies to Restart Enrollment Immediately –

 Decision Based on Review of the Comprehensive Safety Data from Each Trial –

Gilead Sciences, Inc. (Nasdaq: GILD) today announced that the U.S. Food and Drug Administration (FDA) lifted the partial clinical hold placed on studies evaluating its investigational agent magrolimab in combination with azacitidine. The FDA removed the partial clinical hold after a review of the comprehensive safety data from each trial.

With today’s decision from the FDA, enrollment in the U.S. can resume for the studies investigating magrolimab in combination with azacitidine in myelodysplastic syndrome (MDS) and acute myeloid leukemia (AML). Gilead, in close coordination with regulatory authorities, is planning to re-open enrollment in the magrolimab studies that were placed on a voluntary hold outside of the U.S. The company is also working with the FDA regarding the remaining partial clinical hold affecting studies evaluating magrolimab in diffuse large B-cell lymphoma and multiple myeloma. The ongoing clinical studies evaluating magrolimab in solid tumors were not subject to the clinical hold.

“Our confidence in the risk-benefit profile of magrolimab has been unwavering, and we continue to believe in the potential for this treatment to address the unmet medical needs faced by people living with MDS and AML,” said Merdad Parsey, MD, PhD, Chief Medical Officer, Gilead Sciences. “This is a significant milestone for Gilead and, more importantly, for patients diagnosed with these cancers. We look forward to continuing our work developing magrolimab and advancing this potential cancer treatment option.”

During the partial clinical hold, patients already enrolled in the affected Gilead magrolimab studies, including the pivotal, Phase 3 ENHANCE study, continued receiving treatment. Prior to the trial hold, Gilead already met the pre-specified enrollment threshold required for the first interim analysis of the ENHANCE study. Based on this, Gilead is confident the readout for the first interim analysis remains on schedule for 2023.

Magrolimab was granted Breakthrough Therapy designation for the treatment of newly diagnosed MDS by the FDA in 2020. In addition to MDS and AML, magrolimab is being developed in several hematologic cancers and solid tumor malignancies. Magrolimab is an investigational product and is not approved by any regulatory authority for any use; its safety and efficacy have not been established.

About Myelodysplastic Syndrome (MDS)

MDS is a rare, often unrecognized, under-diagnosed, bone marrow disorder widely considered to be a form of cancer. In MDS, the body’s bone marrow does not make enough mature, healthy red blood cells, white blood cells and/or platelets. While many cases may go undiagnosed, current estimates show that ~100,000 new cases are diagnosed each year. Therapeutic advancement for higher-risk MDS has been limited in the last 15 years and stem cell transplant is the only potential cure, but those older than 65 or with other conditions are often not eligible.

One in three people with MDS will progress to AML, one of the most common types of leukemia in adults. Approximately 10,000 people die every year from AML in the U.S.

About Acute Myeloid Leukemia (AML)

AML is a type of cancer that starts in the bone marrow and can quickly move to the blood and other parts of the body, including the lymph nodes, spleen and central nervous system. AML most often develops from cells that would turn into red blood cells, neutrophils, and platelets but can also evolve from other blood disorders such as myelodysplastic syndromes. Approximately 20,000 Americans will be diagnosed with AML each year.

About Magrolimab

Magrolimab is a potential, first-in-class investigational monoclonal antibody against CD47 and a macrophage checkpoint inhibitor that is designed to interfere with recognition of CD47 by the SIRPα receptor on macrophages, with the goal of blocking the “don’t eat me” signal used by cancer cells to avoid being ingested by macrophages. Magrolimab is being developed in several hematologic cancers, including myelodysplastic syndrome (MDS), acute myeloid leukemia (AML) as well as solid tumor malignancies. More information about clinical trials with magrolimab is available at www.clinicaltrials.gov.

About Gilead Sciences

Gilead Sciences, Inc. is a biopharmaceutical company that has pursued and achieved breakthroughs in medicine for more than three decades, with the goal of creating a healthier world for all people. The company is committed to advancing innovative medicines to prevent and treat life-threatening diseases, including HIV, viral hepatitis and cancer. Gilead operates in more than 35 countries worldwide, with headquarters in Foster City, California.

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