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

Through a groundbreaking new gene sequencing technology, researchers have demonstrated that the gene FLT3 is a valid therapeutic target in Acute Myeloid Leukemia, AML, one of the most common types of leukemia.

The technique, developed by Pacific Biosciences, allows for the rapid and comprehensive detection of gene mutations in patients with AML. The findings, published online April 15 in Nature, are a result of collaboration among scientists at the University of California, San Francisco, Pacific Biosciences and Mount Sinai School of Medicine. The discovery may help lead to the development of new drugs to treat AML.

"By sequencing the FLT3 gene in AML patients who have relapsed on therapy targeted against FLT3, we have determined that FLT3 is a valid therapeutic target, and this will certainly help us better understand the physiology of this type of leukemia in order to help us develop new therapies in the future," said Andrew Kasarskis, PhD, who performed the research with colleagues at Pacific Biosciences prior to becoming Vice Chair of the Department of Genetics and Genomic Sciences at Mount Sinai School of Medicine. "In addition, sequencing hundreds of single molecules of FLT3 allowed us to see drug resistance mutations at low frequency. This increased ability to see resistance will let us identify the problem of the resistance sooner in a patient's clinical course and help us take steps to address it."

Historically, DNA sequencing of individual molecules in a mixture has been difficult and time-consuming to achieve. However, Pacific Bioscience's single molecule real-time sequencer, the PacBio RS, identified mutations in the sequence reads obtained in a single run even at low levels, on the order of 1 to 3 percent of total sequence reads.

"This finding may have great utility for drug development, as we can begin to test drugs or a combination of drugs in patients with AML who have relapsed," added Kasarskis, who
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Contact: Mount Sinai Press Office
newsmedia@mssm.edu
212-241-9200
The Mount Sinai Hospital / Mount Sinai School of Medicine
Source:Eurekalert

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