MSH3 expression status determines the responsiveness of cancer cells to the chemotherapeutic treatment with PARP inhibitors and platinum drugs

摘要

Abstract Methods for treating a patient at risk for or diagnosed with colorectal cancer are disclosed herein. The method of the present invention determines the overall expression of MSH3 in cells suspected of being colorectal cancer cells from the patient and predicting the efficacy of therapy with a genotoxic anti-neoplastic agent for treating the patient, wherein a decrease in the overall expression of MSH3 in 5 the patient cells when compared to the expression of MSH3 in normal colorectal cells indicates a predisposition to responsiveness to genotoxic anti-neoplastic agent therapy, wherein the therapy comprises administering an effective amount of the genotoxic anti-neoplastic agent therapy to patients.