Daniel H. Geschwind, M.D., Ph.D., of the University of California, Los Angeles, seeks to understand the genetic basis of social and communication deficits in autism spectrum disorders. Some of these deficits can be reduced in animal models with infusions of the hormone oxytocin into the nervous system, which promotes context-dependent social behaviors. Dr. Geschwind's team will explore the genetic and molecular mechanisms driving oxytocin's effects in autism. To do so, they will study a gene expressed in oxytocin-producing neurons that encodes a chemical called Cntnap2 (for contactin-associated protein-like 2. The team will test whether the Cntnap2 gene contributes to social deficits in autism by regulating the structure of, and signaling from, oxytocin-producing neurons.