CACNG4 and neoplasm: CACNG4, an L-type voltage-gated calcium channel gamma subunit, has been reported to be overexpressed in several cancers (Kuznetsova et al., 2007; Zhang et al., 2016; Slattery et al., 2018) and may promote calcium homeostasis to increase the survival and metastatic ability of tumor cells (Kanwar et al., 2020).