Chromosome Xp11.22 Duplication Syndrome, also known as xp11.22 microduplication syndrome, is related to non-syndromic x-linked intellectual disability and intellectual developmental disorder, x-linked 19. An important gene associated with Chromosome Xp11.22 Duplication Syndrome is DUPXP11.22 (Xp11.22 Microduplication Syndrome). Related phenotypes are intellectual disability and macrocephaly