Thr124Met or Asp75Val | Late onset, pupillary abnormalities, dysphagia, deafness, marked sensory disturbances | De Jonghe,15 Chapon,16 Senderek,17 Misu,18 Hanemann19 |
Glu97Val | Pupillary abnormalities, deafness | Seeman20 |
Asp6Tyr | Intermediate nerve conduction velocity | Mastaglia30 |
Ser44Phe | Some patients with severe progression | Marrosu14 |
Asp61Gly or Tyr119Cys | Late onset, some patients with severe progression | Senderek17 |
His81Tyr and Val113Phe | Intermediate phenotype, pupillary abnormalities | Bienfait21 |
Asp109Glu | Late onset, mild neuropathy | This study |