Three new studies examine the relationship between prenatal medication exposure and autism.   The results from these studies are not always consistent, suggesting there may be something missing from the study of medication use in pregnancy and risk in the child.  What is lacking in these studies is genetic information.  Without data on the genetics of the mother or the child, researchers are missing opportunities to address more specific research questions.  Clinicians lack data to implement  personalized medicine approaches.  The findings don’t suggest genetic research, they urge that genetics be integrated with environmental exposure information.