Noninvasive Diagnostic Strategies for Membranous Nephropathy in the Nephrotic Syndrome Study Network.

IF 8.5 1区 医学 Q1 UROLOGY & NEPHROLOGY
Jarcy Zee, Jonathan J Hogan, Ahmed Abdullah, Lili Liu, Krzysztof Kiryluk, Laurence H Beck
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引用次数: 0
背景:临床实践指南建议,对于肾病综合征和抗磷脂酶 A2 受体抗体(PLA2R-Ab)检测呈阳性的患者,不再需要通过肾活检来确诊膜性肾病(MN)。然而,使用 PLA2R-Ab 酶联免疫吸附试验(ELISA)、PLA2R-Ab 间接免疫荧光试验(IIF)和遗传风险评分诊断 MN 的最佳诊断策略,包括这些试验在出现蛋白尿的患者中的最佳阳性阈值,仍是未知数:我们使用肾病综合征研究网络(NEPTUNE)参与者在首次有临床指征的肾活检时或之前的血清样本,分析了使用 PLA2R-Ab ELISA、IIF 和遗传风险评分的不同组合和临界值诊断 MN 的检验性能特征。二次分析包括活检后 6 个月内但使用任何免疫抑制剂之前的血清样本:有 325 名研究参与者在肾活检当天或之前获得了血清样本,另有 143 名研究参与者在活检后 6 个月内但在使用任何免疫抑制剂之前获得了样本。在这些参与者中,26%(85 人)经活检证实患有 MN。ELISA ≥2 RU/mL 和 IIF 阳性的组合是最佳方法,灵敏度为 0.60,特异性为 1.00,阴性预测值为 0.92,阳性预测值为 1.00。使用 IIF 仅确认 ELISA 滴度在 2-20 RU/ml 之间的边缘值,灵敏度相似,但特异性大于 0.99。在我们的多种族研究样本中,我们没有发现增加遗传风险评分能提高诊断效果:在 NEPTUNE 队列中,ELISA 和 IIF 联合 PLA2R-Ab 检测具有最佳的检测特性,可在肾活检前或肾活检后不久对 MN 进行无创诊断,包括对肾病蛋白尿患者。需要在多种族人群中开展进一步研究,以评估基因数据是否能增强这种方法。
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来源期刊
CiteScore
12.20
自引率
3.10%
发文量
514
审稿时长
3-6 weeks
期刊介绍: The Clinical Journal of the American Society of Nephrology strives to establish itself as the foremost authority in communicating and influencing advances in clinical nephrology by (1) swiftly and effectively disseminating pivotal developments in clinical and translational research in nephrology, encompassing innovations in research methods and care delivery; (2) providing context for these advances in relation to future research directions and patient care; and (3) becoming a key voice on issues with potential implications for the clinical practice of nephrology, particularly within the United States. Original manuscript topics cover a range of areas, including Acid/Base and Electrolyte Disorders, Acute Kidney Injury and ICU Nephrology, Chronic Kidney Disease, Clinical Nephrology, Cystic Kidney Disease, Diabetes and the Kidney, Genetics, Geriatric and Palliative Nephrology, Glomerular and Tubulointerstitial Diseases, Hypertension, Maintenance Dialysis, Mineral Metabolism, Nephrolithiasis, and Transplantation.
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