For instance, based on its high expression in cancer cells, SLC25A5 (ANT2) was postulated to preferentially import ATP made by glycolysis, an activity that maintains the mitochondrial membrane potential and by extension, other essential mitochondrial functions (Stepien et al., 1992; Giraud et al., 1998; Chevrollier et al., 2005). The gene discussed is SLC25A5; the disease is cancer.