TwoSampleMR analysis revealed that 15 genes (DNAJC19, ETHE1, HTATIP2, HINT1, GLRX2, MTRF1L, MICOS10, MTHFS, MRM3, NUDT9, NDUFB4, RMDN1, SIRT5, and SPATA20, UQCRB) were causally associated with CRC (Figure 3). This evidence concerns the gene MTHFS and colorectal carcinoma.