POLG2 deficiency causes adult-onset syndromic sensory neuropathy, ataxia and parkinsonism.
Van Maldergem L, Besse A, De Paepe B, Blakely EL, Appadurai V, Humble MM, Piard J, Craig K, He L, Hella P, Debray FG, Martin JJ, Gaussen M, Laloux P, Stevanin G, Van Coster R, Taylor RW, Copeland WC, Mormont E, Bonnen PE. POLG2 deficiency causes adult-onset syndromic sensory neuropathy, ataxia and parkinsonism. Ann Clin Transl Neurol. 2017 01; 4(1):4-14.