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Chinese Journal of Kidney Disease Investigation(Electronic Edition) ›› 2025, Vol. 14 ›› Issue (01): 1-6. doi: 10.3877/cma.j.issn.2095-3216.2025.01.001

• Original Articles •     Next Articles

Male gender is a risk factor for the poor prognosis of elderly patients with IgA nephropathy

Qiuyue Zhang1, Yu Zhang2, Jie Wang1, Liya Li1, Guanxuan Xvxie1, Xiangmei Chen1, Guangyan Cai1,()   

  1. 1. Department of Nephrology, First Medical Center of Chinese PLA General Hospital, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Medical Devices and Integrated Traditional Chinese and Western Drug Development for Severe Kidney Diseases, Beijing Key Laboratory of Digital Intelligent TCM for Prevention and Treatment of Pan-vascular Diseases, Key Disciplines of National Administration of Traditional Chinese Medicine (zyyzdxk-2023310),Beijing 100853
    2. ankai University School of Medicine, Tianjin 300071; China
  • Received:2024-02-18 Online:2025-02-28 Published:2025-03-14
  • Contact: Guangyan Cai

Abstract:

Objective

To investigate the impact of gender differences on the prognosis of elderly patients with IgA nephropathy (IgAN) by examining their clinical indices and pathological characteristics.

Methods

A retrospective analysis of primary IgAN patients aged ≥ 60 years diagnosed by renal biopsy at the First Medical Center of PLA General Hospital from January 2004 to August 2022.The follow-up deadline was September 2023.The endpoint events were end-stage renal disease (ESRD), regular renal replacement therapy, or decrease of eGFR by no less than 50%.The effective follow-up duration was 1 year.The clinical and pathological characteristics of the patients were observed.Kaplan-Meier survival analysis method was used to compare the differences in renal survival rate between the male and female elderly patients with IgAN.And Cox regression model was used to analyze the prognostic factors of the elderly patients with IgAN.

Results

This study included 135 patients with a median age of 64 years, among whom there were 81 males and 54 females.Compared with the female patients, the male patients showed higher levels of serum creatinine, blood urea nitrogen, blood uric acid, mesangial cell proliferation, and tubular atrophy/interstitial fibrosis, but lower levels of serum IgA, triglycerides, and total cholesterol (all P<0.05).During a median follow-up of 58 months, a total of 32 patients (23.7%) had endpoint events, including 23 males (28.3%)and 9 females (16.7%).Kaplan-Meier survival analysis showed that the renal survival rate of the male patients was significantly lower than that of the female patients (P=0.01).Cox regression analysis showed that the male gender (HR=3. 689, 95%CI: 1. 517-8. 977, P= 0.004) was a risk factor for the poor prognosis of the elderly patients with IgAN.

Conclusion

The male gender was an independent risk factor for the poor prognosis in the elderly patients with IgAN.

Key words: IgA nephropathy, Elderly, Prognosis, Risk factor, Male gender

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