The ApoB/ApoA1 ratio in the HCC group [0.65 (0.47, 0.85)], which was notably lower than those of the LC group [0.80(0.63, 1.07)] and CHB group [0.93(0.76, 1.30)] (P < 0.05). This evidence concerns the gene APOA1 and laryngotracheoesophageal cleft.