CD79A and laryngotracheoesophageal cleft: The analysis between C. pneumoniae infection and the risk of LC revealed that the overall pooled estimates among patients with IgA seropositive (OR = 1.88, 95% CI = 1.30–2.70, p < 0.001, 3084 cases and 3503 controls from 15 studies) (Figure 3) and IgG seropositive titers (OR = 1.50, 95% CI = 1.10–2.04, p = 0.010, 3047 cases and 3272 controls from 13 studies) (Figure 4) were significantly higher in LC patients than in the control groups.