SLC34A2 and non-small cell lung carcinoma: Studies have shown that it is highly expressed in small intestine, kidney and the type II alveolar epithelium cells (AT-II) of lung, where it takes part in the synthesis of AT-II pulmonary surfactant.5, 6, 7 Studies also reported that AT-II cells are potential cancer stem cells that lead to the development of non-small cell lung cancer (NSCLC),8, 9 suggesting potential relation between SLC34A2 and cancer.