KCNJ2 and small cell lung carcinoma: In particular, Kir2.1, Kir2.4, Kir3.2, Kir3.3, and Kir3.4 are expressed in NSCLC (Sakai et al., 2002; Plummer et al., 2005; Wu and Yu, 2019) and SCLC (Plummer et al., 2005; Liu et al., 2015) cell lines (Tables 4, 5).