The entire family of tumor protein p53 (TP53) enhances functions such as apoptosis and autophagy in normal cellular functioning. TP53 is a tumor repressor gene that is often inactivated in human cancers. Reactivating p53 has proven difficult to achieve therapeutically, however. Researchers at MD Anderson Cancer Center are investigating other members of the p53 pathway in order to elucidate new therapeutic options to suppress p53-deficient tumor growth. ΔN isoforms of two members of the p53 family, p63 and p73, are usually overexpressed in cancers and these isoforms (which lack the acidic transactivation domain) act on p53 in a dominant-negative fashion, [...]