In a second step, we identified each Repository phenotype’s supplementary phenotypes. A phenotype is supplementary to a target phenotype (and vice versa) if the pairwise genetic correlation between the phenotypes exceeds 0.6 in absolute value. Under this definition, the estimates in Supplementary Table 9 identify each target phenotype’s supplementary phenotypes. These are listed in the column “Input files” of Supplementary Table 10 (set to “No Supplementary Phenotypes” if the phenotype has genetic correlation less than 0.6 with all other phenotypes). For 37 of the 53 Repository phenotypes, we identified at least one supplementary phenotype.