The proportion of CD83+ CD200+ cells in patients was higher than in the healthy persons (median 13.71 %, range from 6.17 to 44.47 %; mean 15.99 ± 8.99% vs. median 10.79 %, range from 6.12 to 22.68 %; mean 11.22 ± 3.85 %, p = 0.02), and the highest frequencies of the described cells were noted in G3 LC (Fig. 7). The gene discussed is CD200; the disease is laryngotracheoesophageal cleft.