There were DCBs specific for lung cancer, such as SLC34A2, GABRG1, ROS1, AGR2, GNAT3, SFTPA2, MUC5B, SFTA3, SMIM22, CXCL17, BPIFA1, and WFDC2, as well as for breast cancer, such as CSN1S1, FABP7, OPN1SW, SCGB2A2, LALBA, CASP14, KLK5, and WFDC2. Here, WFDC2 is linked to lung cancer.