In summary, in this first large-scale bivariate GWAS meta-analysis of TBLH-BMD and TB-LM in pediatric cohorts, we identified eight GWS loci (in/near WNT4, GALNT3, MEPE, CPED1/WNT16, TNFSF11, RIN3, TOM1L2/SREBF1, and PPP6R3/LRP5). This evidence concerns the gene PPP6R3 and tuberculosis.