We have serious concerns regarding two recent highly publicized papers proposing early biomarker tests for autism or autism spectrum disorder (ASD) (Braunschweig et al.
2013, Walker et al.
2013). The paper of Braunschweig et al. concerns patterns of anti-brain antibodies detected in maternal plasma, while Walker et al. report on the occurrence of a microscopic morphological abnormality (the trophoblast inclusion) in placental tissue. Both groups suggest that their measure should be used clinically to test for autism/ASD risk and to influence early intervention, and websites promoting the tests have been established (pediatricbioscience.com; medicine.yale.edu/obgyn/kliman/autism/asd/index.aspx). …