FAM21C is a symbol for the gene, Family with sequence similarity 21 member C, in humans. Other names include: WASH complex subunit FAM21C; Vaccinia virus penetration factor; VPEF; family with sequence similarity 21, member C. The encoded protein has an amino acid length of 1318 and a mass of 144.7 kDa. Other isoforms may exist. FAM21C is a member of the FAM21 family. This gene shares homology with other species, including: Rat, Zebrafish.