Disclosed herein are compositions and methods for treating cancer in a subject. In some embodiments, the methods involve generating an immune response in an individual by inducing the expression of neoantigens on the surface of abnormal (such as proliferative) cells. In one embodiment, a method of treating cancer in a subject includes administering amlexanox in combination with immune modulators, such as checkpoint inhibitors, immune co-stimulatory molecules, TLR agonists, and TNFR superfamily agonists. In one embodiment, the checkpoint inhibitors are selected from antibodies against PD-1, PD-L1, and CTLA-4.