Loss-of-function mutations in HINT1 cause axonal neuropathy with neuromyotonia

Albena Jordanova and colleagues report mutations in HINT1 in autosomal recessive axonal neuropathy with neuromyotonia. Using linkage analysis and whole-genome sequencing, they identify 8 mutations in 33 affected families. Inherited peripheral neuropathies are frequent neuromuscular disorders known for their clinical and genetic heterogeneity. In 33 families, we identified 8 mutations in HINT1 (encoding histidine triad nucleotide–binding protein 1) by combining linkage analyses with next-generation sequencing and subsequent cohort screening of affected individuals. Our study provides evidence that loss of functional HINT1 protein results in a distinct phenotype of autosomal recessive axonal neuropathy with neuromyotonia.