Alpha-Fetoprotein, Hereditary Persistence of, also known as hereditary persistence of alpha-fetoprotein, is related to contractures, pterygia, and spondylocarpotarsal fusion syndrome 1a and testicular germ cell tumor. An important gene associated with Alpha-Fetoprotein, Hereditary Persistence of is AFP (Alpha Fetoprotein). Affiliated tissues include liver and testis, and related phenotype is elevated circulating alpha-fetoprotein concentration.