Abstract:
:The detrimental impact of preformed anti-HLA donor-specific antibodies (DSA) is well defined, contrarily to non-donor-specific antibodies (NDSA). We sought to evaluate their clinical impact in a cohort of 724 kidney graft recipients in whom anti-HLA antibodies were thoroughly screened and identified in pre-transplant sera by solid-phase assays. NDSA or DSA were detected in 100 (13.8%) and 47 (6.5%) recipients respectively, while 577 (79.7%) were non-allosensitized (NaS). Incidence of antibody-mediated rejection at 1-year was 0.7%, 4.0% and 25.5% in NaS, NDSA and DSA patients, respectively (NaS vs. NDSA P=0.004; NaS vs. DSA P<0.001; NDSA vs. DSA P<0.001). Graft survival was lowest in DSA (78.7%), followed by NDSA (88.0%) and NaS (93.8%) recipients (NaS vs. NDSA P=0.015; NaS vs. DSA P<0.001; NDSA vs. DSA P=0.378). Multivariable competing risk analysis confirmed both NDSA (sHR=2.19; P=0.025) and DSA (sHR=2.87; P=0.012) as significant predictors of graft failure. The negative effect of NDSA and DSA on graft survival was significant in patients receiving no induction (P=0.019) or an anti-IL-2 receptor antibody (P<0.001), but not in those receiving anti-thymocyte globulin (P=0.852). The recognition of the immunological risk associated with preformed DSA but also NDSA have important implications in patients' risk stratification, and may impact clinical decisions at transplant.
journal_name
Hum Immunoljournal_title
Human immunologyauthors
Malheiro J,Tafulo S,Dias L,Martins S,Fonseca I,Beirão I,Castro-Henriques A,Cabrita Adoi
10.1016/j.humimm.2017.07.011subject
Has Abstractpub_date
2017-09-01 00:00:00pages
526-533issue
9eissn
0198-8859issn
1879-1166pii
S0198-8859(17)30459-7journal_volume
78pub_type
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