Of those positive STM results, positive CYFRA21-1 results (n = 125) predominated in patients with bronchiectasis, followed by positive CA199 results (n = 100), positive SCC results (n = 80), positive NSE (n = 70), positive CA125 (n = 66), positive CA72–4 results (n = 40) and positive CEA results (n = 8). This evidence concerns the gene ENO2 and bronchiectasis.