in the follow-up psychosis samples was modest (at a 0.05 significance level, power was about 57% for ASD, 42% for strict autism, and 23% for multiplex ASD). In contrast, we found significant association of rs4583255[T] with low BMI in the published GIANT consortium GWAS dataset of 123,865 individuals48 (P = 0.0039) and in 22,651 Icelanders who were not included in the GIANT study (P = 0.00047).
