Sustained remission of lupus nephritis

Area of Science:

• Nephrology
• Rheumatology
• Immunology

Background:

• Lupus nephritis (LN) is a severe manifestation of systemic lupus erythematosus (SLE).
• Predicting sustained remission (SR) in LN is crucial for long-term patient management.
• Understanding factors influencing SR can optimize treatment strategies.

Purpose of the Study:

• To describe the clinical course of patients with lupus nephritis achieving sustained remission.
• To identify predictors associated with achieving and maintaining sustained remission in LN.
• To evaluate the long-term renal and non-renal damage accrual in patients with and without sustained remission.

Main Methods:

• Retrospective study of biopsy-proven lupus nephritis patients followed for up to 10 years.
• Sustained remission defined by normal renal function, low proteinuria, inactive urine sediment, and minimal immunosuppression for ≥3 years.
• Data collected at diagnosis, remission onset, and final follow-up; multivariate analysis used to identify predictors.

Main Results:

• 16 of 35 patients achieved sustained remission (SR) of lupus nephritis (LN).
• SR patients had significantly higher creatinine clearance and lower SLEDAI scores at follow-up.
• Cumulative damage (SDI scores) increased in controls but not in SR patients, even excluding renal variables.
• Female gender, older age, higher non-renal SLEDAI scores at diagnosis, and absence of azathioprine predicted SR.

Conclusions:

• Sustained remission of lupus nephritis is attainable in a substantial proportion of SLE patients.
• Remission can be maintained without significant long-term immunosuppressive therapy.
• Achieving sustained remission is associated with slower accrual of both renal and non-renal damage.