TFG and hereditary motor and sensory neuropathy, Okinawa type: Previous studies revealed that TFG mutations were associated with hereditary motor and sensory neuropathy with proximal dominant involvement (HMSN‐P), (Alavi, Shamshiri, & Nafissi, 2015; Ishiura, Sako, & Yoshida, 2012) which is characterized by predominantly proximal muscle weakness and atrophy, widespread fasciculations, cramps, and late‐onset distal sensory deficit.