JAK2 and acute lymphoblastic leukemia: After selecting SNPs with genomic significance and clumping for LD, 95, 11, 22, 8, 7, 13, 4, 4, and 17 instrumental variables were extracted to perform MR analysis for ALL, ASXL1, DNMT3A, GNB1, JAK2, PPM1D, SF3B1, SRSF2, TET2, respectively.