SCN5A and cancer: In this study, it was surprising to notice that non-cancer cells, NL-20 and BEAS-2B, also expressed mRNA for NaV1.6, NaV1.7, plus NaV1.5 for the latter, had NaVα proteins as observed in western blotting experiments, but that these proteins seemed to be incorrectly matured and not addressed at the plasma membrane (Roger et al., 2007).