We observed a high genetic correlation between the 21 meta-analyzed BroadABC samples and the 7 Psychiatric Genetics Consortium/iPSYCH samples, with the “Effective N” as weight (rg = 0.93, p = 9.04 × 10−8), indicating strong overlap of genetic effects. Hence, we continued with the combined 28 samples (N = 85,359) for all analyses.
