非常早期发病的1型糖尿病的遗传风险
Amber M Luckett1, Georgia Bonfield1, Gareth Hawkes1
1Department of Clinical and Biomedical Sciences, Faculty of Health and Life Sciences, University of Exeter, UK.
medRxiv : the preprint server for health sciences
|December 25, 2025
概括
确定早期出现1型糖尿病 (T1D) 的遗传风险至关重要. 较高的遗传风险得分 (T1D-GRS) 与较年轻的T1D发病有关,有助于在新生儿中早期发现.
科学领域:
- 免疫遗传学 免疫遗传学
- 儿科内分泌学 儿科内分泌学
- 遗传流行病学遗传流行病学
背景情况:
- 早期识别1型糖尿病 (T1D) 风险,特别是非常早期发病 (<2年),对于预防严重糖尿病酸性脂肪酸症 (DKA) 至关重要.
- 遗传变异,特别是在人类白细胞抗原 (HLA) 综合体内,已知有助于T1D易感性.
- 在T1D发病年龄的异质性表明潜在的遗传影响,保证进一步调查.
研究的目的:
- 调查基因变异对T1D发病年龄异质性的贡献.
- 专门分析在2岁之前被诊断患有T1D的个体的遗传关联.
- 评估67个单核酸多态 (SNP) T1D遗传风险评分 (T1D-GRS) 对于查非常早期发病的T1D的有用性.
主要方法:
- 协会测试对6773名T1D患者进行,按发病年龄分层 (<2, 2-7, 7-13, 13+岁).
- 在这些年龄组中分析了HLA变异的异质性.
- 为每个个体计算67 SNP T1D-GRS,以量化聚合遗传风险.
主要成果:
- 随着T1D发病年龄的降低,观察到较高的T1D-GRS值.
- DR3-DQ2同性显示出与T1D发病<2年 (log-OR=4.27) 的最强相关性.
- 在T1D-GRS中,对于T1D发病<2年 (AUC=0.94) 的高分辨能力被证明是很高的,在第85个人口百分点确定了88%的病例.
结论:
- 增加的遗传风险与非常早期发病的T1D有关.
- T1D-GRS显示出对新生儿查的巨大潜力,特别是识别那些年轻时患T1D发病风险的人.
- 遗传风险分层可能会改善T1D的早期检测和管理.
相关概念视频
Diabetes Mellitus: Overview and Type I Subtype
4.8K
Diabetes mellitus is a chronic metabolic disorder characterized by high blood glucose levels due to inadequate insulin production, insulin resistance, or both. The condition affects millions worldwide and can significantly impact their health and quality of life.
Type 1 diabetes is an autoimmune disease in which the immune system mistakenly attacks and destroys the insulin-producing beta cells in the pancreas. As a result, the body is unable to produce sufficient insulin, and individuals with...
Type 1 diabetes is an autoimmune disease in which the immune system mistakenly attacks and destroys the insulin-producing beta cells in the pancreas. As a result, the body is unable to produce sufficient insulin, and individuals with...
4.8K
Diabetes Mellitus: Type 2 and Gestational
4.2K
Type 2 diabetes, characterized by insulin resistance, arises when the insulin receptors on cells lose responsiveness to insulin, diminishing the cell's capacity to take up glucose, resulting in elevated blood glucose levels. To receive a diagnosis of Type 2 diabetes, a series of blood glucose tests are necessary to assess whether the blood glucose falls within normal parameters. If the result is out of the normal range, a patient may be diagnosed as prediabetic or diabetic, depending on the...
4.2K
Pathophysiology of Diabetes
3.1K
Diabetes mellitus is a chronic metabolic disorder characterized by hyperglycemia. The four categories of diabetes are type 1 diabetes, type 2 diabetes, other specific types of diabetes, and gestational diabetes.
Type 1 diabetes is characterized by autoimmune-mediated destruction of pancreatic β cells, with environmental factors potentially triggering this process in genetically susceptible individuals. Despite many not having a family history, certain genes increase susceptibility,...
Type 1 diabetes is characterized by autoimmune-mediated destruction of pancreatic β cells, with environmental factors potentially triggering this process in genetically susceptible individuals. Despite many not having a family history, certain genes increase susceptibility,...
3.1K
Diabetes: Symptoms, Diagnosis, and Complications
2.0K
For most patients, experiencing several weeks of polyuria, polydipsia, fatigue, and significant weight loss may indicate the presence of diabetes. Furthermore, adults displaying the phenotypic appearance of type 2 diabetes (particularly those who are obese and not initially insulin-requiring), may have islet cell autoantibodies, suggesting autoimmune-mediated β cell destruction and a diagnosis of latent autoimmune diabetes of adults (LADA). The categorization of glucose homeostasis is...
2.0K
Carbohydrate Metabolism
13.7K
Carbohydrates are polymers composed of molecules containing atoms of carbon, hydrogen and oxygen. One gram of carbohydrate can provide four kilo-calories of energy, which makes it the most efficient instant energy source.
Starch accounts for approximately 60% of the carbohydrates consumed by humans. Since amylase enzymes cannot function in the stomach's acidic environment, starch can only be digested in the mouth and small intestine. Simple sugars are found naturally in milk and fruits in...
Starch accounts for approximately 60% of the carbohydrates consumed by humans. Since amylase enzymes cannot function in the stomach's acidic environment, starch can only be digested in the mouth and small intestine. Simple sugars are found naturally in milk and fruits in...
13.7K
Genetic Lingo
113.5K
Overview
113.5K


