Peripheral neuropathy in 18 patients with mitochondrial disorders were reviewed.
Patients were grouped into those with mutations in mitochondrial DNA, SURF1 & POLG1.
Patients with mitochondrial point mutations, predominantly had axonal neuropathy.
Patients with SURF1 mutations had demyelinating neuropathy
Two of the three patients with POLG1 mutation had sensory ataxic neuropathy.