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Clinical and epidemiological research
Concise report
Recurrent lupus nephritis after kidney transplantation: a surveillance biopsy study
  1. Gudrun E Norby1,
  2. Erik H Strøm3,
  3. Karsten Midtvedt2,
  4. Anders Hartmann2,
  5. Inge-Margrethe Gilboe1,
  6. Torbjørn Leivestad4,
  7. Jean Stenstrøm2,
  8. Hallvard Holdaas2
  1. 1Department of Rheumatology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
  2. 2Department of Medicine, Oslo University Hospital, Rikshospitalet, Renal Section, Oslo, Norway
  3. 3Department of Pathology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
  4. 4Department of Immunology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
  1. Correspondence to Gudrun E Norby, Department of Rheumatology, Oslo University Hospital, Rikshospitalet, Sognsvannsveien 20, Oslo 0027, Norway; gudrun.elisabeth.norby{at}rikshospitalet.no

Abstract

Objectives To determine the incidence of recurrent lupus nephritis (LN) in renal transplant recipients with systemic lupus erythematosus (SLE).

Methods All patients with SLE that had undergone transplant with a functioning graft were asked in 2008 to participate in a cross-sectional study. The study included a standardised clinical examination, laboratory tests and a biopsy of the transplanted kidney.

Results A total of 41 (93%) of a cohort of 44 patients with SLE with renal transplants participated. Of the biopsies, 3 were indication biopsies and 38 were surveillance biopsies. In all, 22 patients (54%) had biopsy-proven recurrence of LN. The majority of the cases were subclinical and characterised as class I/class II LN. Proteinuria (mg protein/mmol creatinine) was significantly increased in patients with recurrence, 70.6 (104.9) mg/mmol versus 11.9 (6.7) mg/mmol in patients without recurrence (p=0.038). Lupus anticoagulant was found more frequently in the patients with recurrence, nine versus two patients (p=0.033). Recurrence of LN was associated with receiving a kidney from a living donor (p=0.049). In all, 83% (34 of 41) had chronic allograft nephropathy in the transplanted kidneys with no difference between patients with recurrence or without.

Conclusions Subclinical recurrence of LN is common in patients with renal transplants with SLE. The majority of the patients have chronic allograft nephropathy.

https://doi.org/10.1136/ard.2009.122796

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    Footnotes

    • Competing interests None.

    • Ethics approval This study adhered to the International Conference on Harmonization guidelines for Good Clinical Practice and in accordance with the Declaration of Helsinki. The study was approved by the Regional Ethics Committee for Medical Research (REK-Sør). All patients gave written informed consent before participation in the study.

    • Provenance and peer review Not commissioned; externally peer reviewed.

    • Patient consent Obtained.