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在抗体阴性1型糖尿病中以HLA为指导的单一性糖尿病的鉴定:频率和特征
Yan Chen1, Min Yin2, Yuting Xie1
1National Clinical Research Center for Metabolic Diseases, Key Laboratory of Diabetes Immunology, Ministry of Education, and Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China.
Diabetes & metabolism
|February 12, 2026
概括
单一性糖尿病,包括MODY和线粒体形式,占1型糖尿病 (T1D) 病例的4.2%. 基因查对于准确的诊断和T1D患者的潜在精确治疗至关重要.
科学领域:
- 内分泌学和新陈代谢学
- 遗传学和基因组学 遗传学和基因组学
- 免疫学 免疫学 免疫学
背景情况:
- 抗体阴性1型糖尿病 (T1D) 由于其不清楚的病因,提出了诊断挑战.
- 区分单一性糖尿病和自身免疫型T1D对于适当的患者管理至关重要.
- 以前的研究还没有完全阐明在抗体阴性T1D队列中单基性糖尿病的患病率和特征.
研究的目的:
- 确定单基性糖尿病亚型,特别是年轻人成熟期糖尿病 (MODY) 和线粒体糖尿病的患病率,在大量抗体阴性T1D患者中.
- 调查这个队列中的单一性糖尿病的表型特征,包括人口统计,代谢和人类白细胞抗原 (HLA) 关联.
- 通过评估已确定的单一性糖尿病病例中的β细胞功能来评估精确治疗的潜力.
主要方法:
- 一组482名抗体阴性T1D患者接受了针对36个基因和线粒体3243个A>G突变的向基因测序.
- 分析了人口,代谢 (包括血红蛋白A1c和C-水平) 和HLA基因型数据.
- 在被诊断为单一性糖尿病的患者中评估了β细胞功能.
主要成果:
- 在4.2%的抗体阴性T1D患者中发现了单一性糖尿病:2.5%患有MODY,1.7%患有线粒体糖尿病.
- 患病率因HLA基因型和发病年龄而异;MODY在患有易受HLA的儿童发病患者中较高,而线粒体糖尿病在缺乏易受HLA的成人发病患者中更为常见.
- 单一性糖尿病患者表现出持续的C-分泌,表明保留了β细胞功能,62.5%的被召回患者在15年后维持了C-水平> 100 pmol/l.
结论:
- MODY和线粒体糖尿病是对抗体阴性T1D诊断的重要贡献者,患病率分别为2.5%和1.7%.
- 在抗体阴性T1D人群中,HLA基因型在区分这些亚型方面发挥着至关重要的作用.
- 在单一性糖尿病中观察到的持久的C分泌强调了对抗体阴性T1D的基因查的重要性,以实现向治疗.
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