在患有系统性硬化症相关的间歇性肺病患者中,FAM13A多态性与通常的间歇性肺炎模式有关
Elana J Bernstein1, Francesco Boin2, Brett Elicker3
1Division of Rheumatology, Department of Medicine, Columbia University Vagelos College of Physicians and Surgeons, Columbia University Irving Medical Center, New York, NY, USA.
Rheumatology (Oxford, England)
|October 17, 2024
概括
FAM13A基因,而不是MUC5B,与系统性硬化症中的特定肺部痕模式有关. 这一发现为影响系统性硬化症相关间歇性肺病 (SSc-ILD) 的遗传因素提供了新的见解,其中通常的间歇性肺炎 (UIP) 模式.
科学领域:
- 遗传学 是一个遗传学.
- 肺部病理学 肺部病理学
- 类风湿病学 类风湿病学
背景情况:
- MUC5B促进体多态性 (rs35705950) 与异常性肺纤维化 (IPF) 和类风湿性关节炎相关的间歇性肺病 (RA-ILD) 有关,但与系统性硬化症相关的间歇性肺病 (SSc-ILD) 无关.
- 在高分辨率胸部计算机断层扫描 (HRCT) 上常见的间歇性肺炎 (UIP) 模式是IPF和一些结缔组织疾病的关键特征.
研究的目的:
- 调查MUC5B促进体多态性和其他IPF敏感位与不常见的SSc-UIP内型的关联.
- 为了确定遗传因素是否使SSc-ILD患者倾向于UIP模式.
主要方法:
- 一项对489名来自美国四个硬化皮肤病计划的SSc-ILD患者进行的横截面研究.
- 对MUC5B rs35705950和12个额外的IPF敏感位点进行基因型定型.
- 由盲目胸部放射科医生进行HRCT成像分析,根据美国胸部协会的标准将患者分为UIP和非UIP组.
主要成果:
- 在SSc-ILD患者中,MUC5B SNP rs35705950与明确的UIP模式无关.
- 与其他模式或替代诊断 (OR 3.40-3.65) 相比,具有FAM13A小等位基因 (rs2609255) 两种副本的患者显示出明确的UIP模式的几率明显更高.
结论:
- 在FAM13A基因和SSc-UIP之间发现了一种新的关联.
- MUC5B促进体多态性与SSc-ILD中确定的UIP模式无关,使其与IPF和RA-ILD有所区别.
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