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Scientists identify FLT3 gene as a valid therapeutic target in acute myeloid leukemia
Date:4/15/2012

is also Co-Director of the Institute for Genomics and Multiscale Biology at Mount Sinai. "Furthermore, if we can find out when the drug resistant mutations occur exactly, clinicians may be able to prescribe another drug more quickly."

In this era of personalized medicine, many drugs have been developed to target the mutations in genes that cause cancer - in an effort to attack the cancer with minimal side effects. Oftentimes, patients develop resistance to drugs and new therapeutic strategies must be applied, so physicians use a second line drug, or combination of drugs, in an effort to target the new gene mutations that develop. Knowing exactly when this mutation and subsequent resistance occurs may be very helpful in identifying when new therapies may be prescribed.

In this study, researchers worked with eight leukemia patients who had participated in a clinical trial involving a compound known as AC220, the first clinically-active FLT3 inhibitor. All eight patients relapsed after first achieving deep remissions with AC220. The relapse indicated that patients had developed a resistance to the drug.

AML is characterized by the rapid growth of abnormal white blood cells that accumulate in the bone marrow and interfere with the production of normal blood cells. Treatment includes chemotherapy in order to eliminate leukemic cells and stem cell transplantation. However, through the identification of a valid therapeutic target (FLT3), scientists can begin to develop new and more effective therapies in the future.

"Mount Sinai is deeply committed to addressing the problem of drug resistance in all diseases including cancer and infections with viruses or bacteria," said Kasarskis. "This study certainly tries to address the issue, and will look forward to making continued progress in this area."


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Source:Eurekalert

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