TRAPPC9 and early-onset autosomal dominant Alzheimer disease: Examples of newly added disease connections for TRAPP subunits include miscarriage for TrappC2 (Wen et al., 2015), cancer for TrappC4 (Weng et al., 2014), and TrappC9 (Wetterskog et al., 2014; Zhang et al., 2015), intellectual disability and schizophrenia for TrappC9 (Khattak and Mir, 2014; McCarthy et al., 2014), and Alzheimer's disease for TrappC6 (Hamilton et al., 2011; Chang et al., 2015).