Helsmoortel-Van Der Aa Syndrome, also known as hvdas, is related to syndromic intellectual disability and autism spectrum disorder. An important gene associated with Helsmoortel-Van Der Aa Syndrome is ADNP (Activity Dependent Neuroprotector Homeobox), and among its related pathways/superpathways are Chromatin organization and PKMTs methylate histone lysines. The drugs Ketamine and Anesthetics have been mentioned in the context of this disorder. Affiliated tissues include heart and brain, and related phenotypes are global developmental delay and delayed speech and language development