HSPG2 and laryngotracheoesophageal cleft: Considering the N-PLC group (CHB group, LC group) as the control group and the PLC group as the case group, BCP 1762/1764 mutation was assigned “1” and no mutation was assigned “0.” The ROC curve of the BCP region 1762/1764 mutation combined with GGT and GGTII for PLC diagnosis, and the AUC of the BCP region 1762/1764 mutation combined with GGT and that combined with GGT and GGTII were 0.816 (95% CI [0.743, 0.888]) and 0.818 (95% CI [0.743, 0.892]), respectively.