Abstract: The current disclosure describes effective therapeutic treatments and diagnostic/prognostic methods for colorectal cancer based on the expression or activity level of biomarkers. Aspects of the disclosure relate to a method for treating a subject for colorectal cancer, the method comprising treating the subject for colorectal cancer after the expression level of one or more biomarker genes from Table 1, Table 2, Table 3, Table 4, Table 5, Table S2, Table S3, Table S4, Table S5, FIG. 4A, and/or FIG. 4B has been determined in a sample from the subject.