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International study suggests improved treatment alternative for lymphoid leukemia
Date:2/11/2013

CINCINNATI Discovering what they call the "Achilles' heel" for lymphoid leukemia, an international research team has tested a possible alternative treatment that eradicated the disease in mouse models.

Reporting their results Feb. 11 in the journal Cancer Cell, the scientists said the targeted molecular therapy described in their study could have direct implications for current treatment of Acute Lymphoid Leukemia (ALL) in people.

Led by researchers at Cincinnati Children's Hospital Medical Center and the Institut de recherches cliniques de Montreal (ICRM), the study found that leukemic cells depend on a protein called Gfi1 for survival. Removing the protein in mouse models of the disease weakened and killed the leukemia cells. Researchers said this should make the leukemia more susceptible to chemo and radiation therapies the current frontline treatments for ALL.

"Chemo and radiation therapies are very non-specific and can be toxic to patients. Our findings suggest that combining the inhibition of Gfi1 with these treatments may allow the use of lower cytotoxic doses and directly benefit patients," said H. Leighton Grimes, PhD, co-senior investigator on the study and researcher in the divisions of Cellular and Molecular Immunology and Experimental Hematology at Cincinnati Children's.

Also collaborating was co-senior investigator, Tarik Mry, PhD, president and scientific director of the ICRM in Montreal.

The researchers said the need for better treatment options is evident. Beside the potential toxicity of current therapeutic options, many ALL patients relapse after initial remission of their disease.

A cancer that affects blood cells and the immune system, ALL is the most common type of leukemia in children from infancy up to age 19, according to the Leukemia and Lymphoma Society of America. ALL occurs most often in the first decade of life but increases in frequency again in older individuals. Ac
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Contact: Nick Miller
nicholas.miller@cchmc.org
513-803-6035
Cincinnati Children's Hospital Medical Center
Source:Eurekalert

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