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Angiotensin II Type-1 Receptor Antibodies Are Associated With Active Allograft Dysfunction Following Pediatric Liver Transplantation.
- Source :
-
Transplantation [Transplantation] 2020 Dec; Vol. 104 (12), pp. 2547-2556. - Publication Year :
- 2020
-
Abstract
- Background: Angiotensin II type-1 receptor (AT1R) antibodies have been associated with rejection and allograft loss in solid organ transplantation and may act synergistically with HLA donor-specific antibodies (DSA). Our aims were to assess the prevalence of AT1R antibodies and determine if they were associated with allograft dysfunction in pediatric liver transplant recipients.<br />Methods: We performed a retrospective, cross-sectional study of HLA DSA and AT1R antibodies in 2 cohorts of pediatric liver transplant recipients: a stable control cohort with normal allograft function (n = 70) who consented to have serum samples collected for research purposes during a routine clinic visit and a cohort with active allograft dysfunction (n = 9) whose serum samples were collected as part of clinical care.<br />Results: AT1R antibodies >17 U/mL were detected in 29% of stable control patients and 89% of patients with active allograft dysfunction (P = 0.001). In stable control patients, AT1R antibodies were associated with younger age at transplant (P = 0.010), younger age at time of sample collection (P < 0.001), shorter interval since transplant (P = 0.090), and presence of HLA DSA (P = 0.003). AT1R antibodies in stable control patients were not associated with rejection or allograft loss. However, AT1R antibodies combined with HLA DSA in patients with active allograft dysfunction were associated with rejection and allograft loss.<br />Conclusions: Our results suggest that AT1R antibodies are more common in patients with active allograft dysfunction and may be a risk factor for worse outcomes. Further research is needed to longitudinally assess the clinical impact of HLA DSA and AT1R antibodies.
- Subjects :
- Age Factors
Biomarkers blood
Child
Child, Preschool
Cross-Sectional Studies
Female
HLA Antigens immunology
Humans
Infant
Isoantibodies blood
Male
Postoperative Complications blood
Retrospective Studies
Risk Assessment
Risk Factors
Treatment Outcome
Autoantibodies blood
Liver Transplantation adverse effects
Postoperative Complications immunology
Receptor, Angiotensin, Type 1 immunology
Subjects
Details
- Language :
- English
- ISSN :
- 1534-6080
- Volume :
- 104
- Issue :
- 12
- Database :
- MEDLINE
- Journal :
- Transplantation
- Publication Type :
- Academic Journal
- Accession number :
- 32101982
- Full Text :
- https://doi.org/10.1097/TP.0000000000003206