P2X7 is also expressed in human NSCLC cell lines including A549, PC9 and H292 cells but not in the nonmalignant bronchial epithelial cells BEAS-2B (Barden et al., 2009; Takai et al., 2012; Jelassi et al., 2013; Takai et al., 2014). The gene discussed is P2RX7; the disease is non-small cell lung carcinoma.