METHODS FOR THE IDENTIFICATION AND TREATMENT OF PATIENTS SENSITIVE TO ANTI IGF-1R INHIBITION THERAPY

摘要

Disclosed herein are methods of stratifying a patient population into an IGF-1R inhibitor responder or resistant population comprising assaying a sample of cells derived from a patient to determine if a cell from the patient sample is sensitive to treatment with an IGF-1R inhibitor and selecting a patient for treatment with an IGF-1R inhibitor if the cells from the patient are determined to be sensitive. The determination is based upon either the expression levels of wild type LKB1 in the patient sample wherein a low level of expression of the protein or the gene encoding the biomarker protein is predictive of a favorable outcome to an IGF-1R targeted therapy or detecting the presence of a loss of function mutant LKB1 in the sample, wherein presence of the mutant is predictive of a favorable outcome. The presence of the mutant may be accompanied by determining the expression level of IGF-1R in the same sample, wherein a concomitant increase in the level of expression of IGF-1R in addition to detecting the presence of the mutant protein also predicts a favorable outcome to an IGF-1R targeted therapy. Methods of treating a patient are also provided.