Trop-2(Expressed in breast, cervix, colorectal, esophagus, gastric, certain lung cancers, squamous cell carcinoma of the oral cavity, ovary, pancreas, prostate, stomach, thyroid, urinary bladder, and uterus, also in several hematologic malignancies such as leukemia, extranodal nasal type lymphoma (ENK/TL) and NHL). The gene discussed is TACSTD2; the disease is lung cancer.