Chromosome Xq27.3-Q28 Duplication Syndrome, is also known as xq27.3q28 duplication syndrome. An important gene associated with Chromosome Xq27.3-Q28 Duplication Syndrome is DUPXQ27.3Q28 (Chromosome Xq27.3-Q28 Duplication Syndrome). Affiliated tissues include testes and eye, and related phenotypes are failure to thrive and global developmental delay