Chromosome 2q35 Duplication Syndrome, also known as syndactyly, is related to syndactyly, type iii and syndactyly, type iv. An important gene associated with Chromosome 2q35 Duplication Syndrome is CUP2Q35 (Syndactyly, Type I), and among its related pathways/superpathways are Endochondral ossification with skeletal dysplasias and Head and neck squamous cell carcinoma. The drugs Clonidine and Pharmaceutical Solutions have been mentioned in the context of this disorder. Affiliated tissues include bone and skin, and related phenotypes are finger syndactyly and toe syndactyly