P-Glycoprotein Expression as a Predictor of the Outcome of Therapy for Neuroblastoma

Abstract
Multidrug resistance in chemotherapy for cancer is characterized by increased genetic expression of P-glycoprotein, which acts as an ATP-dependent drug-efflux pump. To determine whether P-glycoprotein levels are of prognostic value in such cases, we measured these levels immunohistochemically in a retrospective study of sequential tumor samples from 67 children with neuroblastoma.

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