Case Report: Novel Mutations in the PCCB Gene Causing Late-Onset Propionic Acidemia. 2022

Guang Ji, and Yaling Liu, and Xueqin Song, and Zhenfei Li
Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, China.

Introduction: Propionic acidemia is an autosomal recessive metabolic disorder and the patients with adult onset are very rare. Methods: Two PCCB mutations were identified. Clinical data were collected from a patient, and metabolic screening and clinical exome sequencing analysis were performed. Results: Two novel mutations were identified in the PCCB gene: M1:c.404_406del:p.G135del and M2:c.632C>T:p.T211I. Conclusion: Late-onset propionic acidemia should be taken into account, and metabolic screening as well as gene analysis should be performed to make a definite diagnosis timely.

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