MCAHS caused by PIGN, PIGA, and PIGT genes was named as MCAHS1 (GPIBD3, OMIM #614080), MCAHS2 (GPIBD4, OMIM #316818), MCAHS3 (GPIBD7, OMIM # 615398), respectively, according to the time of the first report. The gene discussed is PIGA; the disease is multiple congenital anomalies/dysmorphic syndrome.