@article {8353,
	title = {MBL2 Genetic Variants in HCV Infection Susceptibility, Spontaneous Viral Clearance and Pegylated Interferon Plus Ribavirin Treatment Response.},
	journal = {Scand J Immunol},
	volume = {84},
	year = {2016},
	month = {2016 Jul},
	pages = {61-9},
	abstract = {<p>Hepatitis C is disease that damages the liver, and it is caused by the hepatitis C virus (HCV). The pathology became chronic in about 80\% of the cases due to virus persistence in the host organism. The standard of care consists of pegylated interferon plus ribavirin; however, the treatment response is very variable and different host/viral factors may concur in the disease outcome. The mannose-binding protein C (MBL) is a component of the innate immune system, able to recognize HCV and consecutively activating the immune response. MBL is encoded by MBL2 gene, and polymorphisms, two in the promoter region (H/L and X/Y) and three in exon 1 (at codon 52, 54 and 57), have been described as functionally influencing protein expression. In this work, 203 Italian HCV patients and 61 healthy controls were enrolled and genotyped for the five MBL2 polymorphisms mentioned above to investigate their role in HCV infection susceptibility, spontaneous viral clearance and treatment response. MBL2 polymorphisms were not associated with HCV infection susceptibility and with spontaneous viral clearance, while MBL2 O allele, O/O genotype, HYO haplotype and DP combined genotype (all correlated with low or deficient MBL expression) were associated with sustained virological response. Moreover, a meta-analysis to assess the role of MBL2 polymorphisms in HCV infection susceptibility was also performed: YA haplotype could be associated with protection towards HCV infection.</p>},
	issn = {1365-3083},
	doi = {10.1111/sji.12444},
	author = {Zupin, L and Polesello, V and Alberi, G and Moratelli, G and Croc{\`e}, S L and Masutti, F and Pozzato, G and Crovella, S and Segat, L}
}
@article {1812,
	title = {Mannose-binding lectin and MBL-associated serine protease-2 gene polymorphisms in a Brazilian population from Rio de Janeiro.},
	journal = {Int J Immunogenet},
	volume = {39},
	year = {2012},
	month = {2012 Feb},
	pages = {32-8},
	abstract = {<p>Mannose-binding lectin (MBL) is a protein able to bind to carbohydrate patterns on pathogen membranes; upon MBL binding, its{\textquoteright} associated serine protease MBL-associated serine protease type 2 (MASP2) is autoactivated, promoting the activation of complement via the lectin pathway. For both MBL2 and MASP2 genes, the frequencies of polymorphisms are extremely variable between different ethnicities, and this aspect has to be carefully considered when performing genetic studies. While polymorphisms in the MBL-encoding gene (MBL2) have been associated, depending upon ethnicity, with several diseases in different populations, little is known about the distribution of MASP2 gene polymorphisms in human populations. The aim of our study was thus to determine the frequencies of MBL2 (exon 1 and promoter) and MASP2 (p.D371Y) polymorphisms in a Brazilian population from Rio de Janeiro. A total of 294 blood donor samples were genotyped for 27 polymorphisms in the MBL2 gene by direct sequencing of a region spanning from the promoter polymorphism H/L rs11003125 to the rs1800451 polymorphism (at codon 57 in the first exon of the gene). Genotyping for MASP2 p.D371Y was carried out using fluorogenic probes. To our knowledge, this is the first study reporting the prevalence of the MASP2 p.D371Y polymorphism in a Brazilian population. The C allele frequency 39\% is something intermediate between the reported 14\% in Europeans and 90\% in Sub-Saharan Africans. MBL2 polymorphisms frequencies were quite comparable to those previously reported for admixed Brazilians. Both MBL2 and MASP2 polymorphisms frequencies reported in our study for the admixed Brazilian population are somehow intermediate between those reported in Europeans and Africans, reflecting the ethnic composition of the southern Brazilian population, estimated to derive from an admixture of Caucasian (31\%), African (34\%) and Native American (33\%) populations. In conclusion, our population genetic study describes the frequencies of MBL2 and MASP2 functional SNPs in a population from Rio de Janeiro, with the aim of adding new information concerning the distribution of these SNPs in a previously unanalysed Brazilian population, thus providing a new genetic tool for the evaluation of the association of MBL2 and MASP2 functional SNPs with diseases in Brazil, with particular emphasis on the state of Rio de Janeiro.</p>},
	keywords = {Adolescent, Adult, Brazil, Ethnic Groups, Exons, Female, Fluorescent Dyes, Gene Frequency, Genetics, Population, Genome, Human, HapMap Project, Humans, Male, Mannose-Binding Lectin, Mannose-Binding Protein-Associated Serine Proteases, Middle Aged, Polymorphism, Single Nucleotide, Promoter Regions, Genetic, Sequence Analysis, DNA, Young Adult},
	issn = {1744-313X},
	doi = {10.1111/j.1744-313X.2011.01052.x},
	author = {Ferraroni, N R and Segat, L and Guimar{\~a}es, R L and Brand{\~a}o, L A C and Crovella, S and Constantino-Silva, R N and Loja, C and da Silva Duarte, A J and Grumach, A S}
}
@article {1601,
	title = {MBL2 polymorphisms and the choice of controls for association studies: just another story?},
	journal = {Int J Immunogenet},
	volume = {38},
	year = {2011},
	month = {2011 Apr},
	pages = {101-4; author reply 105-8},
	keywords = {Antibodies, Brazil, Control Groups, Gene Frequency, Genetic Association Studies, Genetic Heterogeneity, Genetic Predisposition to Disease, Hepatitis C, Humans, Mannose-Binding Lectin, Polymorphism, Genetic, Thyroid Gland},
	issn = {1744-313X},
	doi = {10.1111/j.1744-313X.2010.00981.x},
	author = {Segat, L and Crovella, S}
}
