FDA approves Miltenyi Biotec's CliniMACS CD34 Reagent System for prevention of GVHD

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Miltenyi Biotec announced today that the U.S. Food and Drug Administration (FDA) has approved the company's CliniMACS CD34 Reagent System as a Humanitarian Use Device for the prevention of graft-versus-host disease (GVHD) in patients with acute myeloid leukemia (AML) in first complete remission undergoing allogeneic stem cell transplantation (SCT) from a matched related donor.

The CliniMACS CD34 Reagent System decreases the risk of developing GVHD, a life-threatening complication that can occur following an allogeneic transplant, in which T cells from the donor attack various tissues of the recipient. The FDA-approved device efficiently removes donor T cells from the graft prior to transplantation by enriching CD34+ blood stem cells, which go on to repopulate the patient's immune and blood building systems.

"When chronic GVHD develops after stem cell transplantation, the result is a substantial decrease in the patient's quality of life," said Stefan Miltenyi, president and founder of Miltenyi Biotec. "We are very excited to be able to provide a new treatment option to clinicians and their patients having to undergo a transplantation procedure."

The FDA approval was based on data from a Phase II, single-arm, multi-center study (BMT CTN 0303) conducted by the Blood and Marrow Transplant Clinical Trials Network which is supported by The National Heart, Lung, and Blood Institute and The National Cancer Institute of The National Institutes of Health. The trial showed that following intensive myeloablative conditioning, stem cell transplantation from an identical sibling donor processed using the CliniMACS CD34 Reagent System as the sole means of GVHD prophylaxis leads to a low incidence of chronic GVHD (19 percent at two years after transplantation) without negatively affecting relapse, engraftment, overall survival or disease-free survival (Pasquini et al. (2012), JCO and Devine et al. (2011), Biol Blood Marrow Transplant).

"The low incidence of acute and chronic GVHD, in the absence of additional immunosuppression are distinct advantages in using the CliniMACS CD34 Reagent System," said Dr. Robert J. Soiffer, Chief of the Division Hematologic Malignancies at the Dana-Farber Cancer Institute and investigator in the Blood and Marrow Transplant Clinical Trials Network.

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