Survival in idiopathic membranous glomerulonephritis

Area of Science:

• Nephrology
• Internal Medicine
• Clinical Research

Background:

• Idiopathic membranous glomerulonephritis (iMGN) is a primary cause of nephrotic syndrome in adults.
• Understanding the long-term clinical course and prognostic factors of iMGN is crucial for patient management.

Purpose of the Study:

• To analyze the clinical characteristics and outcomes of patients with idiopathic membranous glomerulonephritis.
• To identify factors influencing renal function and survival in iMGN.
• To evaluate the impact of immunosuppressive therapy on patient outcomes.

Main Methods:

• Retrospective analysis of 67 patients diagnosed with idiopathic membranous glomerulonephritis.
• Clinical data collection including age, sex, initial presentation (nephrotic syndrome, renal failure), hypertension, and serum creatinine.
• Long-term follow-up to assess renal death, non-renal death, and renal function deterioration.
• Survival analysis using life-table methods.
• Comparison of outcomes between patients treated with corticosteroids/immunosuppressants and those not.

Main Results:

• The majority of patients (70%) were male, with a mean age of 39.3 years.
• Nephrotic syndrome was present in 74.6% of patients initially.
• The 5, 10, and 15-year actuarial survival rates were 94%, 83%, and 69%, respectively.
• Renal function deteriorated in 19% of patients, particularly older individuals with elevated initial creatinine levels.
• No significant difference in survival was observed between patients who received immunosuppressive therapy and those who did not.

Conclusions:

• Idiopathic membranous glomerulonephritis generally has a favorable clinical outcome with good long-term survival.
• Older age and higher initial serum creatinine are associated with renal function decline.
• The efficacy of corticosteroids and immunosuppressive drugs in improving survival for iMGN remains uncertain, warranting a cautious approach to treatment.