GPC4 is a symbol for the gene, Glypican 4, in humans. Other names include: Glypican-4; K-glypican; glypican proteoglycan 4. The encoded protein has an amino acid length of 556 and a mass of 62.4 kDa. Other isoforms may exist. GPC4 is a member of the Glypican family. This gene shares homology with other species, including: Mouse, Rat, Zebrafish, Frog, Chicken.