Izifo zamaphaphu e-interstitial ziyiqembu lezinkinga zamaphaphu ezihlakazekayo ezihambisana nokugula nokufa.Njengenkomba yokubhujiswa kwe-alveolar epithelial cell kanye nokuvuselelwa, i-KL-6 isetshenziselwa ukutholwa okusheshayo, okulula, ukonga, okuphindaphindayo nokungahlaseli, okuphakeme kunezindlela zakudala ezifana ne-high-resolution lung CT, i-alveolar lavage kanye ne-lung biopsy.Izinga le-KL-6 ku-serum yesiguli lingathathwa njengenkomba yokuvimbela kusenesikhathi isifo samaphaphu.