@article {10459, title = {HLA-G regulatory polymorphisms are associated with susceptibility to HCV infection.}, journal = {HLA}, volume = {89}, year = {2017}, month = {2017 03}, pages = {135-142}, abstract = {

BACKGROUND: Hepatitis C virus (HCV) is able to bypass the immune system modulating innate and adaptive immune response and blocking T helper 1 (Th1) cell production. Because the human leukocyte antigen (HLA)-G molecule has immunomodulatory properties inhibiting the function and production of natural killer and cytotoxic lymphocyte T cells, as well as promoting shift from Th1 toward Th2 response, we hypothesized its involvement in susceptibility to HCV infection.

MATERIALS AND METHODS: Considering that HLA-G mRNA expression has been reported to be under genetic control, an association study was conducted analyzing 800 base pairs upstream the ATG at the 5{\textquoteright}upstream regulator region (URR) and 850 base pairs from ATG to exon 3 and the 3{\textquoteright}untranslated region (UTR) of HLA-G gene in Italian HCV-positive patients and uninfected controls.

RESULTS: Four 5{\textquoteright}URR polymorphisms (-725C>G>T, -509C>G, -400G>A and -398G>A), 7 polymorphisms at coding region (+15G>A, +36G>A, +243G>A, insC506, 531G>C, delA615 and 685G>A), the +644G>T polymorphism, and 1 haplotype (TTGTTCCIGAC) showed different frequency distributions between HCV patients and uninfected controls.

CONCLUSION: The results from our study suggest a possible involvement of HLA-G in the risk modulation toward HCV infection.

}, keywords = {3{\textquoteright} Untranslated Regions, 5{\textquoteright} Untranslated Regions, Adult, Aged, Aged, 80 and over, Alleles, Case-Control Studies, Exons, Female, Gene Expression, Gene Frequency, Genetic Association Studies, Genetic Predisposition to Disease, Haplotypes, Hepacivirus, Hepatitis C, HLA-G Antigens, Humans, Italy, Male, Middle Aged, Polymorphism, Single Nucleotide, Risk, Th1 Cells}, issn = {2059-2310}, doi = {10.1111/tan.12959}, author = {Catamo, E and Zupin, L and Freato, N and Polesello, V and Celsi, F and Croc{\`e}, S L and Masutti, F and Pozzato, G and Segat, L and Crovella, S} }