SHANK3 and autism: In addition, our results also reinforce the need for the detailed LD mapping, mutation screening and CNV analysis of SHANK3 in different population or other neurodevelopmental disorders. The present study did not find strong evidence of SHANK3 polymorphisms and autism or identify any described non-synonymous mutations in our cohort. These might indicate that SHANK3 doesn't represent a major susceptibility gene for autism in the autism families ascertained from Chinese Han population.