SLC12A5 and cholangiocarcinoma: For miR‐194‐3p, it is reported that SLC12A5 could function as a ceRNA sponge for miR‐194‐3p to regulate TWIT1 expression, thus exerting oncogenic function in lung adenocarcinoma (Xia et al., 2019); lncRNA PTPRG‐AS1 could act as a miR‐194‐3p sponge to regulate the metastasis of nasopharyngeal carcinoma cells (Yi et al., 2019); and CG200745 could inhibit cholangiocarcinoma growth by upregulating the expression of miR‐194‐3p (Jung et al., 2017).