PMID- 21354454 OWN - NLM STAT- MEDLINE DCOM- 20111003 LR - 20111117 IS - 1879-1166 (Electronic) IS - 0198-8859 (Linking) VI - 72 IP - 6 DP - 2011 Jun TI - Association of HLA-G alleles and 3' UTR 14 bp haplotypes with recurrent miscarriage in Brazilian couples. PG - 479-85 LID - 10.1016/j.humimm.2011.02.011 [doi] AB - Human leukocyte antigen (HLA)-G expression is restricted, expressed on trophoblast, with a major role in fetus acceptance. In addition to the 46 HLA-G alleles, the presence or absence of a 14 bp polymorphism located in the 3' UTR contributes to gene polymorphism that may influence both HLA-G mRNA stability and HLA-G isoform's splicing and consequently could play an immunomodulatory function in pregnancy. To elucidate the role of HLA-G polymorphism in pregnancy, HLA-G allele frequencies and the 14 bp polymorphisms were analyzed and compared in 60 couples with recurrent miscarriage (RM) and 68 fertile control couples. Two haplotypes showed a significant elevated frequency in patients (HLA-G*01:01:08/+14, p(c) < 0.0001 and HLA-G*01:04:01/-14, p(c) < 0.0001). The haplotype HLA-G*01:01:A/+14 exhibited a significant protective effect against RM in women (p(c) = 0.0238). Remarkably, significant differences in linkage disequilibrium were observed between patient and control groups. Two alleles showed a positive association with the +14 bp segment in RM patients and a strong negative association with fertile controls (HLA-G*01:01:08 = patients D' = 0.295-0.371; controls D' = -0.715 to -1.000; HLAG* 01:05N = patients D' = 0.728-1.000; controls D' = -1.000). HLA-G*01:04:01 showed a negative association with the 14 bp segment in patients and a positive association in controls (patients D' = -0.249 to - 0.674; controlss D' = 0.688-1.000). Our results suggest that haplotypic combinations of HLA-G alleles and the 14 bp segment may be associated with RM. CI - Copyright (c) 2011. Published by Elsevier Inc. FAU - Vargas, Rafael Gustavo AU - Vargas RG AD - Immunogenetics and Histocompatibility Laboratory, Genetics Department, Universidade Federal do Parana, Curitiba, Brazil. FAU - Sarturi, Paulo Roberto AU - Sarturi PR FAU - Mattar, Sibelle Botogosque AU - Mattar SB FAU - Bompeixe, Eni Piccioni AU - Bompeixe EP FAU - Silva, Joandrei dos Santos AU - Silva Jdos S FAU - Pirri, Alessandro AU - Pirri A FAU - Bicalho, Maria da Graca AU - Bicalho Mda G LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110225 PL - United States TA - Hum Immunol JT - Human immunology JID - 8010936 RN - 0 (3' Untranslated Regions) RN - 0 (HLA Antigens) RN - 0 (HLA-G Antigens) RN - 0 (Histocompatibility Antigens Class I) SB - IM MH - 3' Untranslated Regions/*genetics MH - Abortion, Habitual/epidemiology/*genetics/physiopathology MH - Adult MH - Brazil MH - DNA Mutational Analysis MH - Family Characteristics MH - Female MH - Genetic Association Studies MH - Genetic Predisposition to Disease MH - HLA Antigens/*genetics MH - HLA-G Antigens MH - Haplotypes/genetics MH - Histocompatibility Antigens Class I/*genetics MH - Humans MH - Linkage Disequilibrium MH - Male MH - Polymorphism, Genetic MH - Pregnancy EDAT- 2011/03/01 06:00 MHDA- 2011/10/04 06:00 CRDT- 2011/03/01 06:00 PHST- 2010/07/13 00:00 [received] PHST- 2011/02/14 00:00 [revised] PHST- 2011/02/22 00:00 [accepted] PHST- 2011/03/01 06:00 [entrez] PHST- 2011/03/01 06:00 [pubmed] PHST- 2011/10/04 06:00 [medline] AID - S0198-8859(11)00039-5 [pii] AID - 10.1016/j.humimm.2011.02.011 [doi] PST - ppublish SO - Hum Immunol. 2011 Jun;72(6):479-85. doi: 10.1016/j.humimm.2011.02.011. Epub 2011 Feb 25.