Among these genes, PIGY, PIGW, PIGG, PIGM, PIGV, PIGN, PIGL, PIGA, PIGO, PIGT, PIGC, PIGQ, PIGP, PGAP1, PGAP2, and PGAP3 variants were reported to be related to human genetic diseases (Freeze et al., 2014). This evidence concerns the gene PGAP2 and hereditary disease.