临床儿科杂志 ›› 2025, Vol. 43 ›› Issue (10): 734-741.doi: 10.12372/jcp.2025.25e0117

• 论著 • 上一篇    下一篇

8例儿童异染性脑白质营养不良临床表型、遗传学分析及异基因造血干细胞移植疗效观察

胡佳悦1, 应令雯2,3, 常国营1,2,3, 李娟2,3, 杨帆1, 王翠锦4, 郁婷婷3,5, 姚如恩3,5, 罗成娟6(), 王秀敏1,2,3()   

  1. 1.临床研究病区 上海交通大学医学院附属上海儿童医学中心(上海 200127)
    2.内分泌遗传代谢科 上海交通大学医学院附属上海儿童医学中心(上海 200127)
    3.上海市罕见病临床研究中心 上海交通大学医学院附属上海儿童医学中心(上海 200127)
    4.神经内科 上海交通大学医学院附属上海儿童医学中心(上海 200127)
    5.遗传分子诊断科 上海交通大学医学院附属上海儿童医学中心(上海 200127)
    6.造血干细胞移植科 上海交通大学医学院附属上海儿童医学中心(上海 200127)
  • 收稿日期:2025-02-17 录用日期:2025-05-26 出版日期:2025-10-15 发布日期:2025-09-29
  • 通讯作者: 罗成娟,王秀敏 E-mail:luochengjuan@scmc.com.cn;wangxiumin1019@126.com
  • 基金资助:
    上海市卫生健康委员会2024年医疗服务与保障能力提升(国家临床重点专科建设)项目(10000015Z155080000004);科技部国家重点研发计划生育健康及妇女儿童健康保障项目(2023YFC2706305)

Clinical phenotypes, genetic analysis and allogeneic hematopoietic stem cell transplantation efficacy of 8 children with metachromatic leukodystrophy

HU Jiayue1, YING Lingwen2,3, CHANG Guoying1,2,3, LI Juan2,3, YANG Fan1, WANG Cuijin4, YU Tingting3,5, YAO Ruen3,5, LUO Chengjuan6(), Wang Xiumin1,2,3()   

  1. 1. Department of Clinical Research Ward, Shanghai Children′s Medical Center Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
    2. Department of Endocrinology and Metabolism, Shanghai Children′s Medical Center Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
    3. Shanghai Rare Disease Clinical Research Center, Shanghai Children′s Medical Center Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
    4. Department of Neurology, Shanghai Children′s Medical Center Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
    5. Department of Genetic and Molecular Diagnosis, Shanghai Children′s Medical Center Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
    6. Department of Blood and Marrow Transplantation Ceuter, Shanghai Children′s Medical Center Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
  • Received:2025-02-17 Accepted:2025-05-26 Published:2025-10-15 Online:2025-09-29
  • Contact: LUO Chengjuan, Wang Xiumin E-mail:luochengjuan@scmc.com.cn;wangxiumin1019@126.com

摘要:

目的 分析8例异染性脑白质营养不良(MLD)患儿的临床特征和基因变异,探讨了基因型与临床表型的相关性及异基因造血干细胞移植(allo-HSCT)的疗效。方法 研究收集了2013年至2024年的患儿资料,通过全外显子组测序确诊,发现所有患儿均有发育迟缓等表现,确诊年龄1岁3个月至9岁6个月。结果 根据起病年龄和临床表现,4例为晚婴型,2例死亡;4例为青少年型,生存率100%。基因测序显示ARSA基因的复合杂合变异,共15种突变,其中3种为首次报道,均为有害变异。3例患儿接受了allo-HSCT治疗,均存活但症状有进展。结论 MLD主要表现为中枢神经系统损害,需结合临床表现、ARSA酶活性及基因检测确诊。早期诊断和治疗对改善预后至关重要,allo-HSCT可提高生存率,但疗效有限。

关键词: 异染性脑白质营养不良, ARSA基因, 溶酶体贮积病, 异基因造血干细胞移植

Abstract:

Objective To analyze the clinical characteristics and genetic variations in 8 children with metachromatic leukodystrophy (MLD), and to explore the correlation between genotype and clinical phenotype as well as the efficacy of allogeneic hematopoietic stem cell transplantation (allo-HSCT). Methods The study collected data from children diagnosed between 2013 and 2024, confirmed through whole exome sequencing, and found that all children had symptoms such as developmental delay, with ages at diagnosis ranging from 1 year and 3 months to 9 years and 6 months. Results Based on the age of onset and clinical manifestations, 4 cases were late infantile type, with 2 deaths; 4 cases were juvenile type, with a survival rate of 100%. Genetic sequencing revealed compound heterozygous variations in the ARSA gene, a total of 15 mutations, of which 3 were newly reported and all were deleterious variations. Three children received allo-HSCT treatment and all survived but with progression of symptoms. Conclusion MLD mainly manifests as central nervous system damage, and diagnosis should be confirmed in combination with clinical manifestations, ARSA enzyme activity, and genetic testing. Early diagnosis and treatment are crucial for improving prognosis, and allo-HSCT can increase survival rates, but the therapeutic effect is limited.

Key words: metachromatic leukodystrophy, ARSA gene, lysosomal storage disease, allogeneic hematopoietic stem cell transplantation

中图分类号: 

  • R72