KCNN4 and pancreatic ductal adenocarcinoma: Indeed, KCa3.1 expression is upregulated in a variety of tumor tissues (Quast et al. 2012; Kovalenko et al. 2016; Mohr et al. 2019; Wen et al. 2020; Bulk et al. 2022; Chen et al. 2022; Faouzi et al. 2016), including pancreatic ductal adenocarcinoma (Soret et al. 2023), where the channel expression was proposed to represent a prognostic biomarker (Jiang et al. 2017).