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Comparison between hydroxychloroquine and systemic corticosteroids in IgA nephropathy: a two-year follow-up study
Feng-Lei Si1,2,3, Chen Tang1,2,3, Ji-Cheng Lv1,2,3
1Renal Division, Peking University First Hospital, Peking University Institute of Nephrology, Beijing, China.
Hydroxychloroquine (HCQ) effectively controls proteinuria in IgA nephropathy (IgAN) over 24 months, comparable to corticosteroids (CSs). HCQ offers a safe alternative with fewer adverse events, maintaining stable renal function.
Area of Science:
- Nephrology
- Immunology
- Pharmacology
Background:
- IgA nephropathy (IgAN) is often treated with hydroxychloroquine (HCQ) to reduce proteinuria.
- Long-term efficacy and safety of HCQ versus systemic corticosteroids (CSs) in IgAN are not well-established.
Purpose of the Study:
- To compare the long-term effects of HCQ versus CS therapy on proteinuria and renal function in IgAN patients.
- To evaluate the safety profile of HCQ compared to CSs in IgAN management.
Main Methods:
- Retrospective case-control study at Peking University First Hospital.
- 39 IgAN patients receiving HCQ for ≥24 months (no other immunosuppressants) were matched with 39 IgAN patients receiving CS therapy.
- Clinical data, including proteinuria and estimated glomerular filtration rate (eGFR), were compared over 24 months.
Main Results:
- Both HCQ and CS groups showed significant proteinuria reduction at 24 months (HCQ: -50.5%; CS: -63.7%), with no significant difference between groups (P=0.707).
- Comparable decline rates in eGFR were observed between HCQ and CS groups (-7.9% vs. -6.6%, P=0.758).
- The CS group experienced more adverse events than the HCQ group.
Conclusions:
- Long-term hydroxychloroquine (HCQ) therapy for IgA nephropathy (IgAN) maintains stable renal function with minimal side effects.
- HCQ presents a safe and effective supportive treatment option for IgAN patients, particularly those intolerant to corticosteroids.
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