| abstract |
The present invention provides compositions and methods for evaluating the likelihood that a tumor is sensitive to an mTOR inhibitor, e.g., rapamycin or a rapamycin analog. The invention provides FKBP proteins as biomarkers for predicting the likelihood that a tumor is sensitive to an mTOR inhibitor. The methods include assessing the expression or activity of an FKBP protein, e.g., FKBP 12, in a subject with a tumor or in a sample derived from a tumor. Additional biomarkers and biomarker combinations are also provided. The invention also provides kits containing, e.g., a validated antibody or ligand for assessing the expression or activity of an FKBP protein. |