Chromosome 19p13.13 Deletion Syndrome, also known as chromosome 19p13.13 duplication syndrome, is related to strabismus and hypotonia. An important gene associated with Chromosome 19p13.13 Deletion Syndrome is DEL19P13.13 (Chromosome 19p13.13 Deletion Syndrome). Affiliated tissues include eye and brain, and related phenotypes are macrocephaly and abnormal facial shape