MMP2 and laryngotracheoesophageal cleft: Furthermore, it was also revealed that MMP-2 rs243865 had significant association with LC incidence among the overall populations under the allelic and dominant models (allelic model, OR = 0.654, 95% CI = 0.507–0.844, p = 0.001; dominant model, OR = 0.613, 95% CI = 0.457–0.823, p = 0.001).