One aspect of this disclosure is directed to a method for treating a cancer in a subject in need thereof by administering to the subject at least a first compound and a second compound together or separately. The first compound is an effective amount of a checkpoint inhibitor optionally with at least one pharmaceutically acceptable carrier. The second compound is an effective amount of an Anti-Tumor Immune Enhancer (ATIE) optionally with at least one pharmaceutically acceptable carrier. The compounds can be administered together or separately.
