APOB and acute lymphoblastic leukemia: The level of triglycerides in B‐ALL is significantly higher than the normal group and obese patients (Figure 1A), whereas the level of total cholesterol, apolipoprotein A1(apoA1), high‐ and low‐density lipoprotein cholesterol (HDL and LDL) is lower, and Apolipoprotein B (apoB) and Lipoprotein (a) showed no difference (Figure S1A–C).