A case report of amyotrophic lateral sclerosis carrying SOD1-p.A5S mutation and related literature analysis
- VernacularTitle:携带SOD1-p.A5S突变的1例肌萎缩侧索硬化患者病例报道及相关文献分析
- Author:
Qingqing ZHOU
1
;
Rui JIA
;
Jiaoting JIN
;
Jingxia DANG
Author Information
- Keywords: amyotrophic lateral sclerosis(ALS); superoxide dismutase 1(SOD1); gene mutation; gene detec-tion
- From: Journal of Xi'an Jiaotong University(Medical Sciences) 2024;45(1):139-144
- CountryChina
- Language:Chinese
- Abstract: Objective Amyotrophic lateral sclerosis(ALS)is a progressive and fatal neurodegenerative disease.Mutations in the Cu/Zn superoxide dismutase 1 gene(SOD1)have been identified as the cause of familial ALS.Sequencing the SOD1 gene may be helpful for patients with a suspected family history of ALS.This article reports for the first time a case of amyotrophic lateral sclerosis with SOD1-p.A5S mutation in Han Chinese and summarizes its clinical characteristics.Method and Results This is the first report on Chinese Han of ALS with SOD1-p.A5S mutation and review of relevant case literature to summarize its clinical characteristics.The study case is a 34-year-old male who was admitted to the Neurology Department of The First Affiliated Hospital of Xi'an Jiaotong University with a complaint of"weakness in both lower limbs for 2 years,worsening with both hands for 6 months".The main clinical manifestations were progressive limb weakness,no swallowing difficulties or cognitive impairment.Further improvement of routine examinations and electromyography after admission were made to rule out other diagnoses,and genetic testing was conducted.Based on the patient's typical clinical manifestations and evidence of involvement of lower motor neurons in the cervical,thoracic,and lumbar spinal cord areas indicated by electromyography,other diagnoses and characteristic gene testing results were reasonably excluded,and ALS was diagnosed.The genetic testing results indicated that the patient had a heterozygous mutation in SOD1 exon 1,c.13G＞T(p.A5S),and his mother had a suspicious medical history but died without genetic verification.After discharge,the follow-up period lasted until August 21,2022,with a total of 38 months and a course of 62 months.Further review of the clinical characteristics of other patients with the same site mutation reported in the literature reveals that the progress of this patient with the mutation was slower than that of other patients with the same site mutation reported in the literature.Conclusion This study shows that gene sequencing is a powerful tool for diagnosing familial ALS.The mutation of c.13G＞T(p.A5S)in exon 1 of SOD1 is a rare pathogenic variation.The progress of patients with this subtype is slow,which further indicates that gene detection has important value in the diagnosis and prognosis of ALS.
