SCGB3A2 (also named uteroglobin-related protein 1, UGRP1 and high in normal-2, HIN-2), the first member of the SCGB gene superfamily, that is highly expressed in airway epithelial Club cells with various biological functions, including anti-lung cancer activity (93–95). Here, SCGB3A2 is linked to lung carcinoma.