Chromosome 3q13.31 Deletion Syndrome, also known as 3q13 microdeletion syndrome, is related to galactosemia iii and solar retinopathy. An important gene associated with Chromosome 3q13.31 Deletion Syndrome is DEL3Q13.31 (Chromosome 3q13.31 Deletion Syndrome). Affiliated tissues include testes, and related phenotypes are macrocephaly and agenesis of corpus callosum