The overexpression of ectonucleotide pyrophosphatase/phosphodiesterase 1 (ENPP1) is tied to poor prognosis in several cancer types, including osteosarcoma and Ewing sarcoma, and is therefore a potential therapeutic target in these cancers. In this regard, Avammune Therapeutics Inc. is developing an ENPP1 inhibitor – AVA-NP-695.