MCU and breast cancer: Previous studies have suggested a role for MCU as a promoter of invasion and metastasis in breast cancer and colorectal carcinoma-derived cell lines (Curry et al., 2013; Marchi et al., 2013; Tang et al., 2015; Cardenas et al., 2016; Tosatto et al., 2016; Ren et al., 2017; Yu et al., 2017; Liu et al., 2020).