Table 5

Hit rates for rare Charcot–Marie–Tooth genes

GeneMutations found (n)Patients screened (n)% Hit rate of No screened
LITAF41852.2
SH3TC293292.7
NEFL31831.6
EGR241353
TRPV4*53531.4
HSPB1*94112.2
HSPB8*14060.2
MTMR22922.2
  • All patients in this cohort were negative for PMP22 duplication or MFN2 mutations depending on whether they had CMT1 or CMT2.

  • * Patients with CMT2 and distal hereditary motor neuropathy screened.

  • An additional 11 patients had heterozygous mutations but only had the hot spot (exon 11) screened.

  • Only nine selected patients screened hence the higher hit rate.

  • CMT, Charcot–Marie–Tooth disease; CMT1, demyelinating CMT; CMT2, axonal CMT; EGR2, early growth response 2; HSPB1, heat shock 27 kDa protein 1; HSPB1, heat shock protein 8; LITAF, lipopolysaccharide induced TNF factor; MTMR2, myotubularin related protein 2; NEFL, neurofilament, light polypeptide; PMP22, peripheral myelin protein 22; SH3TC2, SH3 domain and tetratricopeptide repeats 2; TRPV4, transient receptor potential cation channel, subfamily V, member 4.