ATP5IF1 and cancer: The inhibition of ATP synthesis by the inhibitor protein was not matched by the majority of studies reporting measurements of ATP synthesis rate and ΔΨ both in IF1-silenced and control cancer cells (Fujikawa et al., 2012; Runswick et al., 2013; Barbato et al., 2015; Sgarbi et al., 2018a; Tanton et al., 2018).