MFN2 and hearing loss disorder: Previously reported concomitant symptoms of CMT2A such as cognitive impairment (Tomaselli et al., 2018), stroke (Tomaselli et al., 2018), spinal cord atrophy (Hikiami et al., 2018), hearing loss (Hikiami et al., 2018), and vocal cord paralysis were not found in our patients (Zuchner et al., 2006).