在患有大规模线粒体DNA缺失综合征的患者中长期的造血功能障碍
Noa Greenberg-Kushnir1,2,3, Liron D Grossmann1,3,4, Assaf Arie Barg1,2,3
1Division of Pediatric Hematology and Oncology, The Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel.
Pediatric blood & cancer
|October 14, 2024
概括
皮尔森综合征和凯恩斯-赛尔综合征患者表现出持续的骨髓功能障碍,这是单个大规模线粒体DNA删除综合征的关键特征. 这强调了需要在受影响的儿童中进行专门的血液学监测.
科学领域:
- 线粒体遗传学线粒体遗传学
- 血液学 血液学 血液学
- 儿科瘤学 儿科瘤学
背景情况:
- 皮尔森综合征 (PS) 和凯恩斯-赛尔综合征 (KSS) 是单一的大规模线粒体DNA缺失综合征 (SLSMD).
- PS呈现为儿童期细胞衰减,KSS以后发作而没有血液问题,但两者共享线粒体DNA删除.
- 新出现的证据将PS进展与骨髓恶性瘤联系在一起,这表明骨髓衰竭 (BMF) 是PS和可能所有SLSMD的核心.
研究的目的:
- 调查SLSMD综合征患者的纵向血液学表现.
- 在这些条件下描述骨髓 (BM) 功能障碍的程度和持续性.
主要方法:
- 16名SLSMD患者的长度随访 (13个PS,3个KSS).
- 血液学参数的分析,包括细胞衰竭和输血要求.
- 在一组患者中进行骨髓综合研究 (组织学,细胞性,CD34+计数,CFU容量,细胞遗传学).
主要成果:
- 75%的患者经历了细胞衰减,56%需要输血.
- 持续的BM功能障碍甚至在没有活跃细胞衰竭的患者中也明显,其特点是细胞性降低和异血类构造.
- 16%的患者表现出染色体7异常,表明可能发生克隆进化.
结论:
- 骨髓功能障碍是SLSMD综合征的一个持续的标志.
- SLSMD携带着克隆进化和获得7号染色体异常的风险.
- 建议针对这个患者群体量身定制的血液学监测指南.
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