MUC1 and bronchiectasis: When we explored individual cases with (n = 4) and without (n = 6) bronchiectasis, QILD scores were relatively higher in the patients with bronchiectasis (median 29.4 versus 13.2, respectively; p = 0.11) despite similar levels of KL-6 (median 346.2 versus 364.6 U/mL, respectively, p = 0.35).