Whole genome screening may be useful in the molecular diagnosis of CMT

The diagnostic yield of standard genetic studies for Charcot-Marie-Tooth (CMT) disease remains relatively poor despite the use of high-throughput sequencing (NGS). South Korean researchers have adopted a “whole-genome sequencing” (WGS) strategy in an attempt to remedy these difficulties.

  • Seventy-two families were included in the study,
  • no molecular signature had been obtained in these families (after whole exome sequencing, a duplication of the PMP22 gene having been ruled out beforehand),
  • of these, 19 could be resolved using WGS,
  • four concerned genes outside the sphere of peripheral neuropathies.

This study demonstrates the value of WGS and foreshadows future diagnostic techniques for CMT.

 

Whole-genome sequencing in clinically diagnosed Charcot-Marie-Tooth disease undiagnosed by whole-exome sequencing. Kim YG, Kwon H, Park JH et al. Brain Commun. 2023 Apr.