AGR2 and Charcot-Marie-Tooth disease: These results underscore the importance of further endeavors to analyze the correlation between the expression levels of AGR2, 14-3-3ε and α-actinin 4 in tumor cells, as well as the levels of serum AGR2, 14-3-3ε and α-actinin 4 under stress conditions, using specimens from an expanding number of CMT patients.