-1,4-galactosyltransferase, CDG, Disorder of Manganese Transport and Glycosylation, Gly204Cys, Gly38Arg, Impaired galactosylation, Manganese, SLC39A8, SLC39A8 Deficiency, SLC39A8 deficiency, Val33Met, c, c., c.1004G>C, c.1019T, c.1019T>A, c.112G>C, c.610G, c.610G>T, c.97G>A, carbohydrate, child, cranial asymmetry, deformed skull, dysproportionate dwarfism, galactose, hearing loss, hypsarrhythmia, infantile spasms, inherited glycosylation disorders, manganese, maternal allele, p.Gly204Cys, p.Gly38Arg, p.Ile340Asn, p.Ser335Thr, p.Val33Met, psychomotor retardation, seizures, short limbs, trace element deficiency, transferrin, type II congenital disorder of glycosylation