Lupus & antiphospholipid syndrome

Renal response status to predict long-term renal survival in patients with lupus nephritis: results from the Toronto Lupus Cohort

Lupus Sci MedPublished Retrospective cohort study

Authors' conclusion

Achieving mPERR or mCRR was associated with improved long-term renal survival

Study context

Population
Adults with SLE and biopsy-proven Class III±V, IV±V or V lupus nephritis (LN), University of Toronto Lupus Cohort, 1970–2015 (87.2% female; mean age 34.1 years)
Participants
179 adults
Exposure
mPERR responders vs non-responders at 24 months postbiopsy
  • mPERR respondersn = 128
  • non-mPERR respondersn = 51reference
  • mCRR respondersn = 102
  • non-mCRR respondersn = 77reference
Outcome
Association of index mPERR status with long-term renal survival (no progression to end-stage kidney disease [eGFR <30 mL/min/1.73 m², dialysis or transplant] or death)
Follow-up
Up to 25 years
Methodological detailsobservational, GSK Study 212866
  • Observational
  • GSK Study 212866

Main finding

As reported in the abstract

Long-term renal survival by mPERR status

Log-rank p=0.0119

Observational data: associations, not effects.

Secondary outcomes

OutcomemCRR respondersnon-mCRR respondersP value
Long-term renal survival by mCRR status · up to 25 yearsmCRR responders vs non-mCRR responders80.4%64.9%log-rank p=0.0259
  • Long-term renal survival by mCRR status: achieving mCRR associated with increased likelihood of long-term renal survival

Original publication

Renal response status to predict long-term renal survival in patients with lupus nephritis: results from the Toronto Lupus Cohort. Lupus Sci Med. Published 27 November 2024. doi:10.1136/lupus-2024-001264

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