TOMM40 and Alzheimer disease: TOMM40, a channel-forming subunit at OMM constituting the TOMM40 complex for protein import into mitochondria (Humphries et al., 2005; Manczak et al., 2011; Liu et al., 2018), is proposed as a novel biomarker of AD (Mise et al., 2017; Ochi et al., 2020).