APOB and acute myeloid leukemia: After calculation of the best weighting coefficients by the regularization parameter lambda and the 1-SE criteria (Supplement Figure 1), a five-factor prognostic model was selected to be included using the equation: RS= - 0.23× serum Apo A-I levels - 0.84×serum Apo B levels - 0.93×serum HDL levels -0.63× serum CHO levels + 0.93 × serum TG levels, and the RS for each AML patient was calculated as described above.