Abstract: Provided are novel antigenic polypeptides comprising tumor-associated peptides, and compositions comprising the same. Such antigenic polypeptides and compositions are particularly useful as immunotherapeutics (e.g., cancer vaccines). Also provided are methods of inducing a cellular immune response using the polypeptides and compositions, methods of treating a disease using the polypeptides and compositions, kits comprising the polypeptides and compositions, methods of making the compositions, and antibodies and T cell receptors that specifically bind to the polypeptides.