PMID- 15727250 OWN - NLM STAT- MEDLINE DCOM- 20050401 LR - 20061115 IS - 1090-6576 (Print) IS - 1090-6576 (Linking) VI - 8 IP - 3 DP - 2004 Fall TI - Fanconi anemia: contribution of molecular analyses to the identification of bone marrow graft donors and the study of chimerism in grafted patients. PG - 268-75 AB - We report on the effectiveness of molecular studies regarding Fanconi anemia (FA) for a better selection of bone marrow graft donors and for post-transplant follow up. Ten unrelated FA patients and their families were analyzed by microsatellite markers. In 9 cases, the cytogenetic investigation of potential human leukocyte antigen (HLA)-identical related donors was normal, and the molecular analyses confirmed that they were also either normal or heterozygous carriers. For 1 patient, cytogenetic analysis of an HLA-identical sibling donor yielded ambiguous results with a relatively high number of chromosomal breakages using cross-linking agents. However, genotyping of this potential donor demonstrated his heterozygous state. Nine patients have received allogeneic bone marrow transplantation from HLA-matched related donors. Microsatellite analysis showed complete chimerism (CC) in all cases. The median follow up was 54 months (range 8-144 months). One patient out of 9 with CC rejected her graft without prior detection of a transitional mixed chimerism. Among these patients, 1 died 25 months after the transplantation of a chronic graft-versus-host-disease (GVHD). We conclude that, when the cytogenetic studies are not conclusive, molecular analyses are crucial to distinguish heterozygous carriers from asymptomatic FA Tunisian patients. Molecular analyses also allowed the evaluation of hematopoietic chimerism after allogeneic bone marrow transplantation and might be of value to identify patients with a high risk for graft rejection. FAU - Bouchlaka, Chiraz AU - Bouchlaka C AD - Laboratoire d'Immunologie, Vaccinologie et Genetique Moleculaire, Institut Pasteur de Tunis, Tunisia. FAU - Othman, Tarek Ben AU - Othman TB FAU - Aissaoui, Lamia AU - Aissaoui L FAU - Elloumi, Houda AU - Elloumi H FAU - Elloumi, Moez AU - Elloumi M FAU - Amouri, Ahlem AU - Amouri A FAU - Abid, Hela Ben AU - Abid HB FAU - Hadiji, Sondes AU - Hadiji S FAU - Slama, Hmida AU - Slama H FAU - Makni, Hafedh AU - Makni H FAU - Saad, Ali AU - Saad A FAU - Abdelhak, Sonia AU - Abdelhak S FAU - Dellagi, Koussay AU - Dellagi K CN - Tunisian Fanconi Anemia Study Group LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Genet Test JT - Genetic testing JID - 9802546 RN - 0 (DNA-Binding Proteins) RN - 0 (FANCA protein, human) RN - 0 (Fanconi Anemia Complementation Group A Protein) RN - 0 (Genetic Markers) RN - 0 (HLA Antigens) SB - IM MH - Adolescent MH - Adult MH - *Bone Marrow Transplantation MH - Child MH - Chimerism MH - DNA-Binding Proteins/genetics MH - Fanconi Anemia/*genetics/*surgery MH - Fanconi Anemia Complementation Group A Protein MH - Female MH - Genetic Markers/genetics MH - HLA Antigens/*genetics MH - Haplotypes/genetics MH - Humans MH - Male MH - Microsatellite Repeats/*genetics MH - Pedigree MH - *Tissue Donors MH - *Transplantation Chimera MH - Transplants EDAT- 2005/02/25 09:00 MHDA- 2005/04/02 09:00 CRDT- 2005/02/25 09:00 PHST- 2005/02/25 09:00 [pubmed] PHST- 2005/04/02 09:00 [medline] PHST- 2005/02/25 09:00 [entrez] AID - 10.1089/gte.2004.8.268 [doi] PST - ppublish SO - Genet Test. 2004 Fall;8(3):268-75. doi: 10.1089/gte.2004.8.268.