Abstract
Background
Survival implications of pre-transplant antibodies to human leukocyte antigens prior to lung transplantation (LTx) in adult cystic fibrosis (CF) patients are unknown.
Methods
Data from the United Network for Organ Sharing Registry (1987–2013) were used to compare survival differences in adult CF patients with pre-transplant class I and II panel reactive antibody (PRA) levels ≤10 versus >10 %.
Results
Of 3149 CF LTx recipients, 1526 and 1399 were included in univariate survival analyses of class I and II PRA, respectively, while 1106 and 1001 were included in multivariate Cox analyses for class I and class II, respectively. Kaplan–Meier survival functions failed to demonstrate significant differences in survival with PRA >10 % for class I (Log-rank test: χ 2 (df = 1): 1.11, p = 0.293) or class II (Log-rank test: χ 2 (df = 1): 0.99, p = 0.320). Adjusting for covariates, multivariate Cox models demonstrated that class II PRA >10 % was associated with a significant increase in mortality hazard (HR 1.918; 95 % CI 1.128, 3.261; p = 0.016), whereas class I PRA >10 % was uncorrelated with this outcome.
Conclusions
Pre-transplant PRA class II >10 % in adult CF patients is associated with elevated mortality hazard after LTx.
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Abbreviations
- BMI:
-
Body mass index
- CF:
-
Cystic fibrosis
- DSAs:
-
Donor-specific antibodies
- FEV1 :
-
Forced expiratory volume in one second
- FVC:
-
Forced vital capacity
- HLAs:
-
Human leukocyte antigens
- LTx:
-
Lung transplantation
- OPTN:
-
Organ Procurement and Transplant Network
- PRA:
-
Panel reactive antibody
- 6MWD:
-
6-Minute walk distance
- UNOS:
-
United Network for Organ Sharing
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Author contribution
Don Hayes, Jr.: Conception and design, acquisition of data, interpretation of data, drafting of the manuscript. Dmitry Tumin: Statistical analysis, interpretation of data, revision of the manuscript. Joseph D. Tobias: Interpretation of data, revision of the manuscript.
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Hayes, D., Tumin, D. & Tobias, J.D. Pre-transplant Panel Reactive Antibody and Survival in Adult Cystic Fibrosis Patients After Lung Transplantation. Lung 194, 429–435 (2016). https://doi.org/10.1007/s00408-016-9861-8
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DOI: https://doi.org/10.1007/s00408-016-9861-8