XR9576

Definition / meaning of XR9576

A substance that is being studied in the treatment of cancer. It may help tumor cells respond again to drugs they have become resistant (unable to respond) to. XR9576 is a type of multidrug resistance inhibitor and a type of P-glycoprotein antagonist. Also called tariquidar.

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Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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