Chromosome 1q21.1 Duplication Syndrome, also known as 1q21.1 microduplication syndrome, is related to autism and autism spectrum disorder. An important gene associated with Chromosome 1q21.1 Duplication Syndrome is DUP1Q21 (Chromosome 1q21.1 Duplication Syndrome). Affiliated tissues include heart and bone, and related phenotypes are intellectual disability and global developmental delay