The present disclosure is directed to methods of screening a compound for modulating activity at a TNF-like weak inducer of apoptosis (TWEAK) binding site on a cysteine-rich domain (CRD) of fibroblast growth factor-inducible 14 (Fn14). The present disclosure also provides heterocyclic compounds and pharmaceutically acceptable salts thereof and methods for the prevention, treatment, and amelioration of cell proliferative disorders with these compounds.