The present disclosure provides SETD2 protein inhibitors, and methods, compositions, and kits for treating diseases, disorders, or conditions in a subject with a SETD2 protein inhibitor and, optionally, a second therapeutic agent, wherein the second therapeutic agent comprises one or more glucocorticoid receptor agonists, one or more immunomodulatory drugs, one or more proteasome inhibitors, one or more Bcl-2 inhibitors, one or more pleiotropic pathway modulators, one or more XPO1 inhibitors, one or more histone deacetylase inhibitors, or one or more EZH2 inhibitors, or a combination thereof.