CHCHD10 and lower motor neuron syndrome with late-adult onset: CHCHD10‐related diseases include mitochondrial DNA instability disorder, frontotemporal dementia‐amyotrophic lateral sclerosis (FTD‐ALS) clinical spectrum, late‐onset spinal motor neuropathy (SMAJ), and Charcot–Marie–Tooth disease type 2 (CMT2).