New research examines why some children born with heart defects also have developmental disabilities. HHMI investigator is among 6 honored for excellence in research aimed at curing intractable diseases and extending human life. New research shows that about 10 percent of severe cases of congenital heart disease are caused by genetic mutations that are absent in the parents of affected children. Nine HHMI investigators and one HHMI Professor are elected to the American Academy of Arts and Sciences.