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Background: Giant axonal neuropathy (GAN) is a rare autosomal recessive, early-onset and fatal neurodegenerative disorder which develops into severe impairments in both peripheral and central nervous systems., Methods and Results: Trio-WES analysis was used to detect genetic mutations associated with disorders, and Sanger sequencing was used to confirm the mutations in the patient. We identified two novel variations in GAN gene (c.809G > T(p.G270V); c.1182 C > A(p.Y394X)) within a Chinese family. Meanwhile, we propose a hypothesis of the molecular mechanism leading to GAN., Conclusions: This study extend the number of GAN mutations associated with GAN disease and would provide reference for clinical diagnosis in the future., (© 2022. The Author(s), under exclusive licence to Springer Nature B.V.)