TF and liver cancer: The OR of liver cancer was 2.45 (95% CI, 0.81, 7.45; p = 0.11), 2.11 (95% CI, 1.16, 3.83; p = 0.02), 10.89 (95% CI, 2.44, 48.59; p = 0.002) and 0.30 (95% CI, 0.17, 0.53; p = 2 × 10−5) for one SD increase in genetically predicted serum iron, log10 ferritin, ferritin saturation and transferrin levels.