The 15q11.2‐q13.1 duplication syndrome involves several genes implicated in autism, playing key roles in neurodevelopment and specifically expressed in the central nervous system, for example, ATP10A (OMIM #605855), UBE3A (OMIM #601623), and the GABRB3 (OMIM #137192), GABRG3 (OMIM #600233), and GABRA5 genes (Urraca et al., 2013). The gene discussed is GABRG3; the disease is autism.