Journal
GENES AND IMMUNITY
Volume 14, Issue 5, Pages 330-335Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/gene.2013.25
Keywords
hepatitis C virus; human leukocyte antigen; supertype
Categories
Funding
- National Center for Research Resources CTSA [UL1RR025750, KL2RR025749, TL1RR025748]
- National Institute of Allergy and Infectious Diseases [R01A1052065, UO1-AI-35004, UO1-AI-31834, UO1-AI-34994, UO1-AI-34989, UO1-AI-34993, UO1-AI-42590]
- Eunice Kennedy Shriver National Institute of Child Health and Human Development [UO1-HD-32632]
- National Cancer Institute
- National Institute on Drug Abuse
- National Institute on Deafness and Other Communication Disorders
- National Center for Research Resources (UCSF-CTSI) [UL1 RR024131]
- Frederick National Laboratory for Cancer Research, the National Institutes of Health [HHSN261200800001E]
- NIH, Frederick National Laboratory, Center for Cancer Research
- Einstein-Montefiore Center for AIDS Research [5P30AI051519-08]
- [R01AI057006]
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Human leukocyte antigen (HLA) genotype has been associated with the probability of spontaneous clearance of hepatitis C virus (HCV). However, no prior studies have examined whether this relationship may be further characterized by grouping HLA alleles according to their supertypes, defined by their binding capacities. There is debate regarding the most appropriate method to define supertypes. Therefore, previously reported HLA supertypes (46 class I and 25 class II) were assessed for their relation with HCV clearance in a population of 758 HCV-seropositive women. Two HLA class II supertypes were significant in multivariable models that included: (i) supertypes with significant or borderline associations with HCV clearance after adjustment for multiple tests, and (ii) individual HLA alleles not part of these supertypes, but associated with HCV clearance in our prior study in this population. Specifically, supertype DRB3 (prevalence ratio (PR) = 0.4; P = 0.004) was associated with HCV persistence, whereas DR8 (PR = 1.8; P = 0.01) was associated with HCV clearance. Two individual alleles (B*57:01 and C*01:02) associated with HCV clearance in our prior study became nonsignificant in analysis that included supertypes, whereas B*57:03 (PR = 1.9; P = 0.008) and DRB1*07:01 (PR = 1.7; P = 0.005) retained their significance. These data provide epidemiologic support for the significance of HLA supertypes in relation to HCV clearance.
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