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Combo therapies tested to overcome drug resistance in melanoma patients
Date:8/2/2011

ach to developing combination therapies. The key was to figure out how to combine the molecules so that the cancer cannot get around them. Why wait for the cancer to escape? Let's block all the pathways right from the start."

Lo said this study highlights the need not only to identify mechanisms of acquired resistance to targeted inhibitors, but also to understand the signaling network associated with each mechanism to generalize potential translatable approaches to overcome drug resistance.

Once the right combinations of drugs were used together, the inhibitors "consistently triggered cell death in a highly efficient and consistent manner," the study states. "Together, our findings offer a rational strategy to guide clinical testing in pre-identified subsets of patients who relapse during treatment with BRAF inhibitors."

Lo said a clinical trial could be planned that first examines the patients' cancers to identify the resistance mechanisms at play. Those patients could then be funneled into a study pairing the inhibitors that target those specific pathways. Patients with other resistance mechanisms at work would be placed in studies testing inhibitors specific to their resistance mechanisms.

The next step, Lo said, is to identify all the mechanisms of resistance in this form of melanoma.


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Contact: Kim Irwin
kirwin@mednet.ucla.edu
310-206-2805
University of California - Los Angeles Health Sciences
Source:Eurekalert

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