类固醇耐药性性综合征与高度混合的儿科人口中独特的遗传特征有关
Andreia Watanabe1,2, Precil Diego Miranda de Menezes Neves2,3, Kelly Nunes4
1Department of Pediatrics, University of São Paulo School of Medicine, São Paulo, Brazil.
Kidney international reports
|December 19, 2024
概括
遗传和非遗传因素影响儿科类固醇耐药性性综合征 (SRNS) 的功能衰竭 (KF). 门德尔变异和APOL1高风险基因型与混合群体中更快的KF进展有关.
科学领域:
- 遗传学和基因组学 遗传学和基因组学
- 腎臟病學 (nephrology) 是一種醫學.
- 儿科医学 儿科医学
背景情况:
- 在小儿类固醇耐药性性综合征 (SRNS) 中,导致功能衰竭 (KF) 的遗传和非遗传因素在混杂人群中尚不清楚.
- 了解这些因素对于预测疾病轨迹和制定有针对性的干预措施至关重要.
研究的目的:
- 调查基因架构,包括门德尔病因和APOL1风险变体,以及它们与儿科SRNS队列中KF进展的关联.
- 探索遗传祖先和非遗传因素在这种混合群体内KF发展中的作用.
主要方法:
- 对101名儿科SRNS患者的基因组分析,使用62个基因组或整个外基因组测序来确定孟德尔病因和APOL1状态.
- 评估遗传血统和与临床结果的相关性,包括进展到KF.
- 用ACMG标准评估变异性致病性,并进行统计分析 (Cox回归) 来识别风险因素.
主要成果:
- 54%的患者被诊断出焦点细分性淋巴结核硬化 (FSGS);13%的患者有家族病史.
- 遗传分析显示,在12%的病例中发现了孟德尔变异,在8%的家庭中发现了APOL1高风险基因型,在美洲原住民背景中发现了新的变异.
- 44%的患者发展为KF. 门德尔形式,APOL1高风险基因型,非欧洲血统,非白人种族,发病早期/晚期,以及非最小变化的疾病组织学独立预测了更高的KF风险.
结论:
- 门德尔变异和APOL1高风险基因型在这个混合人群中代表了儿科SRNS的显著,独特的遗传特征,占~20%的病例.
- 即使在低非洲遗传祖先中,APOL1高风险基因型也可能存在,这凸显了混合群体中遗传风险的复杂性.
- 临床因素,如自我宣布的种族,发病年龄和脏活检组织学,是KF风险的独立预测因素,补充了遗传发现.
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