Format

Send to

Choose Destination
Nephrol Dial Transplant. 2015 May;30(5):814-21. doi: 10.1093/ndt/gfu399. Epub 2015 Jan 20.

Predictors of renal and patient outcomes in anti-GBM disease: clinicopathologic analysis of a two-centre cohort.

Author information

1
Renal Unit, Royal Berkshire Hospital, Reading, Berkshire, UK.
2
Department of Histopathology, Addenbrooke's Hospital, Cambridge, UK.
3
Renal Unit, Lister Hospital, Stevenage, Hertfordshire, UK.
4
Lupus and Vasculitis Clinic, Addenbrooke's Hospital, Cambridge University Hospitals, Cambridge, UK.
5
Renal Unit, Lister Hospital, Stevenage, Hertfordshire, UK Postgraduate Medical School, University of Hertfordshire, Hatfield, Hertfordshire, UK.

Abstract

BACKGROUND:

Patients with anti-glomerular basement membrane (GBM) disease are at increased risk of morbidity and mortality from renal failure, pulmonary haemorrhage or complications of treatment. One-third also have circulating anti-neutrophil cytoplasmic antibodies (ANCA). The aim of this study was to determine the clinicopathologic predictors of patient and renal outcomes in anti-GBM disease with or without ANCA.

METHODS:

Retrospective review of 43 patients diagnosed with anti-GBM disease over 20 years in two centres, including nine with dual anti-GBM and ANCA positivity. Renal biopsies from 27 patients were scored for the presence of active and chronic lesions.

RESULTS:

Dual-positive patients were almost 20 years older than those with anti-GBM positivity alone (P = 0.003). The overall 1-year patient and renal survivals were 88 and 16%, respectively. Oligoanuria at diagnosis was the strongest predictor of mortality; none of the 16 patients without oligoanuria died. In a Cox regression model excluding oligoanuria, age was the only other independent predictor of survival. Pulmonary haemorrhage and dialysis dependence did not influence mortality. Thirty-five of the forty-three (81%) patients required dialysis at presentation, including all nine dual-positive patients. Of them, only two (5.7%) regained renal function at 1 year. By logistic regression, oligoanuria at diagnosis and percentage of crescents were independent predictors of dialysis independence at 3 months. However, in biopsied patients, the presence of crescents (>75%) added little to the presence of oligoanuria in predicting dialysis independence. Histological activity and chronicity indices did not predict renal outcome. Two of the nine (22%) dual-positive patients relapsed compared with none of the anti-GBM alone patients. Seven patients received kidney transplants without disease recurrence.

CONCLUSIONS:

Oligoanuria is the strongest predictor of patient and renal survival while percentage of glomerular crescents is the only pathologic parameter associated with poor renal outcome in anti-GBM disease. Kidney biopsy may not be necessary in oligoanuric patients without pulmonary haemorrhage.

KEYWORDS:

anti-glomerular basement membrane; anti-neutrophil cytoplasmic antibodies; crescentic glomerulonephritis; oligoanuria; survival

PMID:
25609740
DOI:
10.1093/ndt/gfu399
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Silverchair Information Systems
Loading ...
Support Center