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Table 3 Analysis of electrophysiological parameters using GDAP1 locus-specific database data

From: A locus-specific database for mutations in GDAP1 allows analysis of genotype-phenotype correlations in Charcot-Marie-Tooth diseases type 4A and 2K

Amplitude (mV) Conduction Velocity (m/s) Total
  MNCV > 40 MNCV 31-40 MNCV ≤ 30 Not recordable  
CMAP > 6 35 (45%) 2 (15.4%) 0 / 37
CMAP 1.1-6 30 (39%) 5 (23.1%) 0 / 35
CMAP 0.5-1 6 (8%) 3 (23.1%) 0 / 9
CMAP < 0.5 6 (8%) 5 (38.5%) 9 (100%) / 20
Not recordable / / / 30 30
Total 77 15 9 30 131
  1. Values represent the number of patients for each situation; the corresponding percentages are mentioned in brackets. MNCV: motor nerve conduction velocity; CMAP: compound motor action potential.