Abstract
Background
Anti-neutrophil cytoplasmic autoantibody (ANCA) vasculitis is a rare condition in pediatric patients. Little is known about practice patterns and outcomes of pediatric transplant patients. The purpose of our study was to examine differences in patient characteristics, immunosuppression, and long-term graft outcomes between ANCA and non-ANCA vasculitis recipients.
Methods
We used the Scientific Registry of Transplant Recipients to evaluate pediatric ANCA vasculitis recipients between the ages of 1 and 22 years old from 1991 to 2017 and compared them to non-ANCA vasculitis patients during the same time cohort in the USA.
Results
A total of 26,431 transplant recipients were identified, of these, 337 with ANCA vasculitis. Mean 1-year eGFR was 62.46 and 64.92 ml/min/1.73 m2 (p = 0.002), and mean 5-year eGFR was 57.95 and 59.38 ml/min/1.73 m2 (p = 0.18) between the non-ANCA and ANCA groups, respectively. Five-year graft survival was similar in both groups (non-ANCA 75.5 vs. ANCA 78.6%; p = 0.19). Of those with graft loss within the ANCA group, only 0.6% was secondary to disease recurrence (p = 0.14).
Conclusions
Kidney transplant is a safe treatment modality for children with ANCA-related kidney failure. ANCA patients have comparable graft survival when compared to the general transplant population with a low risk of recurrence. Thymoglobulin was used in a higher proportion within the ANCA group compared to the non-ANCA group. Tacrolimus, mycophenolate mofetil/mycophenolic acid, and steroids were the predominant maintenance immunosuppression used in both groups.
Graphical abstract
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Data Availability
Data from SRTR. Please see disclaimer below.
Code availability
SPSS version 26 (IBM Inc., Armonk, NY, USA).
Abbreviations
- ANCA:
-
Anti-neutrophil cytoplasmic autoantibody
- GPA:
-
Granulomatosis with polyangiitis
- MPA:
-
Microscopic polyangiitis
- EGPA:
-
Eosinophilic granulomatosis with polyangiitis
- CKD 5:
-
Stage 5 chronic kidney disease
- SRTR:
-
Scientific Registry of Transplant Recipients
- OPTN:
-
Organ Procurement and Transplantation Network
- KDPI:
-
Kidney donor profile index
- HLA:
-
Human leukocyte antigen
- PRA:
-
Panel reactive antibodies
- eGFR:
-
Estimated glomerular filtration rate
- KDIGO:
-
Kidney Disease: Improving Global Outcomes
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Stella Kilduff, MD: participated in research design and participated in the writing of the paper and review of the paper.
Jonathan Butler, MS: participated in data analysis, contributed new reagents or analytic tools, and participated in the performance of the research and review of the paper.
Hiroshi Sogawa, MD: participated in research design and review of the paper.
Sonia Solomon, DO: participated in research design, participated in the performance of the research, and participated in the writing of the paper and review of the paper.
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The data reported here have been supplied by the Hennepin Healthcare Research Institute (HHRI) as the contractor for the Scientific Registry of Transplant Recipients (SRTR). The interpretation and reporting of these data are the responsibility of the author(s) and in no way should be seen as an official policy of or interpretation by the SRTR or the US Government.
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Kilduff, S., Butler, J., Sogawa, H. et al. Practice patterns and outcomes for pediatric ANCA vasculitis transplant recipients in a national cohort. Pediatr Nephrol 37, 1667–1673 (2022). https://doi.org/10.1007/s00467-021-05341-z
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DOI: https://doi.org/10.1007/s00467-021-05341-z