PMID- 27333038 OWN - NLM STAT- MEDLINE DCOM- 20170223 LR - 20181113 IS - 2352-3964 (Electronic) IS - 2352-3964 (Linking) VI - 9 DP - 2016 Jul TI - Progressive Fibrosis Is Driven by Genetic Predisposition, Allo-immunity, and Inflammation in Pediatric Liver Transplant Recipients. PG - 346-355 LID - S2352-3964(16)30242-0 [pii] LID - 10.1016/j.ebiom.2016.05.040 [doi] AB - AIM: To determine predisposing factors of idiopathic allograft fibrosis among pediatric liver transplant recipients. BACKGROUND: Protocol biopsies (PB) from stable liver transplant (LT) recipient children frequently exhibit idiopathic fibrosis. The relation between allograft inflammation, humoral immune response and fibrosis is uncertain. Also the role of HLA-DRB1 genotype has not been evaluated, though it's associated with fibrosis in autoimmune hepatitis. PATIENTS AND METHODS: This observational study, included 89 stable LT recipient transplanted between 2004-2012 with mean follow-up of 4.3years, 281 serial PBs (3.1 biopsy/child) and human leukocyte antigen (HLA) antibody data. PBs were taken 1-2, 2-3, 3-5, 5-7, and 7-10years post-LT, and evaluated for inflammation and fibrosis using liver allograft fibrosis score (LAFSc). The evolution of fibrosis, inflammation and related predisposing factors were analysed. FINDINGS: HLA-DRB1*03/04 allele and Class II DSA were significantly associated with portal fibrosis (p=0.03; p=0.03, respectively). Portal inflammation was predisposed by Class II DSA (p=0.02) and non-HLA antibody presence (p=0.01). Non-portal fibrosis wasn't predisposed by inflammation. Lobular inflammation was associated with non-HLA antibodies. INTERPRETATION: We conclusively demonstrated that allograft inflammation results in fibrosis and is associated with post-LT Class II DSA and non-HLA antibodies. The HLA-DRB1*03/04 allele caused genetic predisposition for fibrosis. FUNDING: None. CI - Copyright (c) 2016 The Authors. Published by Elsevier B.V. All rights reserved. FAU - Varma, S AU - Varma S AD - Universite Catholique de Louvain, Cliniques Universitaires St Luc, Department of Pediatrics, Service of pediatric gastroenterology and hepatology, Brussels, Belgium. Electronic address: sharat.varma@uclouvain.be. FAU - Ambroise, J AU - Ambroise J AD - Universite Catholique de Louvain, Cliniques Universitaires St Luc, Centre for applied molecular technologies (CTMA), Institute of experimental and clinical research (IREC), Brussels, Belgium. Electronic address: jerome.ambroise@uclouvain.be. FAU - Komuta, M AU - Komuta M AD - Universite Catholique de Louvain, Cliniques Universitaires St Luc, Service of anatomical pathology, Brussels, Belgium. Electronic address: mina.komuta@uclouvain.be. FAU - Latinne, D AU - Latinne D AD - Universite Catholique de Louvain, Cliniques Universitaires St Luc, Department of clinical biology, Brussels, Belgium. Electronic address: dominique.latinne@uclouvain.be. FAU - Baldin, P AU - Baldin P AD - Universite Catholique de Louvain, Cliniques Universitaires St Luc, Service of anatomical pathology, Brussels, Belgium. Electronic address: pamela.baldin@uclouvain.be. FAU - Reding, R AU - Reding R AD - Universite Catholique de Louvain, Cliniques Universitaires St Luc, Service of pediatric surgery and transplantation, Brussels, Belgium. Electronic address: raymond.reding@uclouvain.be. FAU - Smets, F AU - Smets F AD - Universite Catholique de Louvain, Cliniques Universitaires St Luc, Department of Pediatrics, Service of pediatric gastroenterology and hepatology, Brussels, Belgium. Electronic address: francoise.smets@uclouvain.be. FAU - Stephenne, X AU - Stephenne X AD - Universite Catholique de Louvain, Cliniques Universitaires St Luc, Department of Pediatrics, Service of pediatric gastroenterology and hepatology, Brussels, Belgium. Electronic address: xavier.stephenne@uclouvain.be. FAU - Sokal, E M AU - Sokal EM AD - Universite Catholique de Louvain, Cliniques Universitaires St Luc, Department of Pediatrics, Service of pediatric gastroenterology and hepatology, Brussels, Belgium. Electronic address: etienne.sokal@uclouvain.be. LA - eng PT - Journal Article PT - Observational Study DEP - 20160601 PL - Netherlands TA - EBioMedicine JT - EBioMedicine JID - 101647039 RN - 0 (HLA Antigens) RN - 0 (HLA-DRB1 Chains) SB - IM MH - Age Factors MH - Alleles MH - Biopsy MH - Child MH - Child, Preschool MH - Female MH - Fibrosis MH - Genetic Predisposition to Disease MH - Genotype MH - HLA Antigens/immunology MH - HLA-DRB1 Chains/genetics MH - Humans MH - Immune System/metabolism MH - Inflammation/*pathology MH - Liver/metabolism/*pathology MH - Liver Diseases/genetics/pathology/therapy MH - *Liver Transplantation MH - Logistic Models MH - Male MH - Multivariate Analysis MH - Odds Ratio MH - Sex Factors MH - Transplantation, Homologous PMC - PMC4972529 OTO - NOTNLM OT - *Donor-specific antibodies OT - *Fibrosis OT - *HLA antibodies OT - *HLA-DRB1 OT - *Humoral immunity OT - *Pediatric liver transplantation OT - *Portal inflammation EDAT- 2016/06/23 06:00 MHDA- 2017/02/24 06:00 PMCR- 2016/06/01 CRDT- 2016/06/23 06:00 PHST- 2016/04/11 00:00 [received] PHST- 2016/05/22 00:00 [revised] PHST- 2016/05/30 00:00 [accepted] PHST- 2016/06/23 06:00 [entrez] PHST- 2016/06/23 06:00 [pubmed] PHST- 2017/02/24 06:00 [medline] PHST- 2016/06/01 00:00 [pmc-release] AID - S2352-3964(16)30242-0 [pii] AID - 10.1016/j.ebiom.2016.05.040 [doi] PST - ppublish SO - EBioMedicine. 2016 Jul;9:346-355. doi: 10.1016/j.ebiom.2016.05.040. Epub 2016 Jun 1.