Moreover, we found that in consistent with a previous study [18], Mdga2 +/− mice displayed autism-like behaviors including impaired nest building ability (Fig 1C), increased repetitive self-grooming behavior (Fig 1D), and deficits in social affiliation (Fig 1E), sociability (Fig 1F), and social novelty (Fig 1F). The gene discussed is MDGA2; the disease is autism.