PMID- 18277084 OWN - NLM STAT- MEDLINE DCOM- 20080321 LR - 20180614 IS - 1648-9144 (Electronic) IS - 1010-660X (Linking) VI - 44 IP - 1 DP - 2008 TI - Natural clearance of hepatitis C virus in hemophilia patients. PG - 15-21 AB - OBJECTIVE: The objective of this study was to investigate the prevalence of HCV (hepatitis C virus) infection in hemophilia patients in Latvia and to analyze association between natural clearance of HCV and human leukocyte antigen (HLA) class II genes. MATERIAL AND METHODS: From 61 hemophilic patients participating in this study, 38 were adults and 23 were pediatric patients younger than 18 years. To analyze association between HLA class II alleles and natural clearance of HCV, the gene frequency was compared in hemophilia patients group and the control group of 60 healthy subjects, all men. Serum HCV RNA was qualitatively determined and HLA class II alleles were identified by polymerase chain reaction (PCR) method. RESULTS: HCV infection is common among hemophilia patients in Latvia. Antibodies to HCV were found in 45 of 61 (74%) hemophilia patients. In 41% of hemophilia patients (18 of 44), HCV infection resolved spontaneously. Children cleared HCV more frequently than adults (7 of 11 comparing to 11 of 33, respectively; OR=3.50; P<0.05). The frequency difference was found to be statistically significant when comparing HLA alleles distribution in the sample of hemophilia patients who naturally cleared HCV (n=18) and in the control group (n=60) (corresponding frequency of HLA-DRB1*07 allele - 4 (11.11%) and 9 (1.67%); OR=7.38; P<0.05). CONCLUSIONS: Natural clearance of HCV infection is frequently found in hemophilia patients in Latvia. Children are more likely to clear virus naturally than adults. There is an association between natural clearance of HCV and HLA allele DRB1*07 in hemophilia patients. FAU - Simanis, Raimonds AU - Simanis R AD - Department of Traditional Infectology, Tuberculosis and AIDS, Riga Stradins University, Latvia. raimonds.simanis@e-teliamtc.lv FAU - Lejniece, Sandra AU - Lejniece S FAU - Sochnevs, Arturs AU - Sochnevs A FAU - Eglite, Jelena AU - Eglite J FAU - Chernevska, Gunta AU - Chernevska G FAU - Kovalova, Zhanna AU - Kovalova Z FAU - Gardovska, Dace AU - Gardovska D FAU - Jeruma, Agita AU - Jeruma A FAU - Kuse, Velga AU - Kuse V FAU - Viksna, Ludmila AU - Viksna L LA - eng PT - Comparative Study PT - Journal Article PL - Switzerland TA - Medicina (Kaunas) JT - Medicina (Kaunas, Lithuania) JID - 9425208 RN - 0 (HLA Antigens) RN - 0 (RNA, Viral) SB - IM MH - Adolescent MH - Adult MH - Age Factors MH - Chi-Square Distribution MH - Child MH - Data Interpretation, Statistical MH - Enzyme-Linked Immunosorbent Assay MH - Genes, MHC Class II MH - Genotype MH - HLA Antigens/immunology MH - Hemophilia A/*complications/genetics/immunology/virology MH - Hepacivirus/*genetics/immunology/isolation & purification MH - Hepatitis C/*epidemiology/*genetics/immunology MH - Humans MH - Latvia/epidemiology MH - Lithuania MH - Male MH - Polymerase Chain Reaction MH - Prevalence MH - RNA, Viral/analysis MH - United States EDAT- 2008/02/16 09:00 MHDA- 2008/03/22 09:00 CRDT- 2008/02/16 09:00 PHST- 2008/02/16 09:00 [pubmed] PHST- 2008/03/22 09:00 [medline] PHST- 2008/02/16 09:00 [entrez] AID - 0801-03e [pii] PST - ppublish SO - Medicina (Kaunas). 2008;44(1):15-21.