Neuronopathy, Distal Hereditary Motor, Autosomal Dominant 9, is also known as neuronopathy, distal hereditary motor, type ix. An important gene associated with Neuronopathy, Distal Hereditary Motor, Autosomal Dominant 9 is WARS1 (Tryptophanyl-TRNA Synthetase 1). Related phenotypes are distal lower limb muscle weakness and motor axonal neuropathy