From Table 3 all seronegative IgA (OR = 0.69, 95% CI = 0.42–1.16, p = 0.16, 2113 cases and 2562 controls from 11 studies) and IgG (OR = 0.66, 95% CI = 0.42–105, p = 0.08, 1947 cases and 2307 controls from 8 studies) titers are not associative risk factors among LC patients. This evidence concerns the gene CD79A and laryngotracheoesophageal cleft.