PMP22 and Charcot-Marie-Tooth disease: The ROC area-under the curve (AUC) for NCAM1 to identify CMT patients from age- and sex-matched healthy controls was 0.748 (95% CI; 0.6268–0.869), for GARS/AARS-related CMT versus control AUC was 0.7467 (95% CI; 0.578–0.914) and for CMT1A 0.797 (95% CI; 0.661–0.9324), respectively (Fig. 3B–D).