2 Slattery Slattery ML ML Patter Patter JD JD Samowitz Samowitz W W Schaffer Schaffer D D Leppert Leppert M M « Methylenetetrahydrofolate reductase, diet, and risk of colorectal cancer » « Methylenetetrahydrofolate reductase, diet, and risk of colorectal cancer » Cancer Epidemilo Biomarkers Prev Cancer Epidemilo Biomarkers Prev 1999 1999 8 8 6 6 513 513 8 8. Here, MTHFR is linked to colorectal cancer.