1. Immunochip analyses identify a novel risk locus for primary biliary cirrhosis at 13q14, multiple independent associations at four established risk loci and epistasis between 1p31 and 7q32 risk variants
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Juran BD, Hirschfield GM, Invernizzi P, Atkinson EJ, Li Y, Xie G, Kosoy R, Ransom M, Sun Y, Bianchi I, Schlicht EM, Lleo A, Coltescu C, Bernuzzi F, Podda M, Lammert C, Shigeta R, Chan LL, Balschun T, Marconi M, Cusi D, Heathcote EJ, Mason AL, Myers RP, Milkiewicz P, Odin JA, Luketic VA, Bacon BR, Bodenheimer HC Jr, Liakina V, Vincent C, Levy C, Franke A, Gregersen PK, Bossa F, Gershwin ME, deAndrade M, Amos CI, Italian PBC Genetics Study Group, Lazaridis KN, Seldin MF, Siminovitch KA, Almasio PL, Alvaro D, Andriulli A, Barlassina C, Battezzati PM, Benedetti A, Bragazzi M, Brunetto M, Bruno S, Caliari L, Casella G, Civardi F, Coco B, Colli A, Colombo M, Colombo S, Cursaro C, Crocè LS, Crosignani A, Donato F, Fabris L, Ferrari C, Floreani A, Fontana R, Galli A, Grattagliano I, Lazzari R, Macaluso F, Malinverno F, Marra F, Marzioni M, Mascia E, Mattalia A, Montanari R, Morini L, Morisco F, Niro GA, Picciotto A, Portincasa P, Prati D, Rosina F, Rossi S, Selmi C, Spinzi G, Strazzabosco M, Tarallo S, Tiribelli C, Toniutto P, Vinci M, Zuin M., ANDREONE, PIETRO, MURATORI, LUIGI, MURATORI, PAOLO, Juran BD, Hirschfield GM, Invernizzi P, Atkinson EJ, Li Y, Xie G, Kosoy R, Ransom M, Sun Y, Bianchi I, Schlicht EM, Lleo A, Coltescu C, Bernuzzi F, Podda M, Lammert C, Shigeta R, Chan LL, Balschun T, Marconi M, Cusi D, Heathcote EJ, Mason AL, Myers RP, Milkiewicz P, Odin JA, Luketic VA, Bacon BR, Bodenheimer HC Jr, Liakina V, Vincent C, Levy C, Franke A, Gregersen PK, Bossa F, Gershwin ME, deAndrade M, Amos CI, Italian PBC Genetics Study Group, Lazaridis KN, Seldin MF, Siminovitch KA, Almasio PL, Alvaro D, Andreone P, Andriulli A, Barlassina C, Battezzati PM, Benedetti A, Bragazzi M, Brunetto M, Bruno S, Caliari L, Casella G, Civardi F, Coco B, Colli A, Colombo M, Colombo S, Cursaro C, Crocè LS, Crosignani A, Donato F, Fabris L, Ferrari C, Floreani A, Fontana R, Galli A, Grattagliano I, Lazzari R, Macaluso F, Malinverno F, Marra F, Marzioni M, Mascia E, Mattalia A, Montanari R, Morini L, Morisco F, Muratori L, Muratori P, Niro GA, Picciotto A, Portincasa P, Prati D, Rosina F, Rossi S, Selmi C, Spinzi G, Strazzabosco M, Tarallo S, Tiribelli C, Toniutto P, Vinci M, Zuin M., Juran, Bd, Hirschfield, Gm, Invernizzi, P, Atkinson, Ej, Li, Y, Xie, G, Kosoy, R, Ransom, M, Sun, Y, Bianchi, I, Schlicht, Em, Lleo, A, Coltescu, C, Bernuzzi, F, Podda, M, Lammert, C, Shigeta, R, Chan, Ll, Balschun, T, Marconi, M, Cusi, D, Heathcote, Ej, Mason, Al, Myers, Rp, Milkiewicz, P, Odin, Ja, Luketic, Va, Bacon, Br, Bodenheimer HC, Jr, Liakina, V, Vincent, C, Levy, C, Franke, A, Gregersen, Pk, Bossa, F, Gershwin, Me, Deandrade, M, Amos, Ci, Lazaridis, Kn, Seldin, Mf, Siminovitch, Ka, Morisco, Filomena, Italian PBC Genetics Study, Group, Juran, B, Hirschfield, G, Atkinson, E, Schlicht, E, Chan, L, Heathcote, E, Mason, A, Myers, R, Odin, J, Luketic, V, Bacon, B, Bodenheimer, H, Gregersen, P, Gershwin, M, Amos, C, Italian PBC Genetics Study, G, Lazaridis, K, Seldin, M, Siminovitch, K, Almasio, P, Alvaro, D, Andreone, P, Andriulli, A, Barlassina, C, Battezzati, P, Benedetti, A, Bragazzi, M, Brunetto, M, Bruno, S, Caliari, L, Casella, G, Civardi, F, Coco, B, Colli, A, Colombo, M, Colombo, S, Cursaro, C, Crocè, L, Crosignani, A, Donato, F, Fabris, L, Ferrari, C, Floreani, A, Fontana, R, Galli, A, Grattagliano, I, Lazzari, R, Macaluso, F, Malinverno, F, Marra, F, Marzioni, M, Mascia, E, Mattalia, A, Montanari, R, Morini, L, Morisco, F, Muratori, L, Muratori, P, Niro, G, Picciotto, A, Portincasa, P, Prati, D, Rosina, F, Rossi, S, Selmi, C, Spinzi, G, Strazzabosco, M, Tarallo, S, Tiribelli, C, Toniutto, P, Vinci, M, Zuin, M, Almasio, Pl, Battezzati, Pm, Croce', Saveria, Niro, Ga, Tiribelli, Claudio, and Zuin, M.
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MULTILOCUS GENOTYPE DATA ,PRIMARY BILIARY CIRRHOSIS ,PBC ,0302 clinical medicine ,Gene Frequency ,MED/12 - GASTROENTEROLOGIA ,HLA Antigens ,REGULATORY T-CELLS ,RHEUMATOID-ARTHRITIS ,VITAMIN-D ,Genetics (clinical) ,Oligonucleotide Array Sequence Analysis ,Genetics ,CLASSICAL HLA ALLELES ,0303 health sciences ,Liver Cirrhosis, Biliary ,PBC, HLA alleles ,Association Studies Articles ,CELIAC-DISEASE ,General Medicine ,GENOME-WIDE ASSOCIATION ,SUSCEPTIBILITY LOCI ,GENETIC RISK ,3. Good health ,Chromosomes, Human, Pair 1 ,SINGLE NUCLEOTIDE POLYMORPHISMS ,030211 gastroenterology & hepatology ,Chromosomes, Human, Pair 7 ,GENETIC ANALYSES ,Genotype ,Single-nucleotide polymorphism ,Locus (genetics) ,Human leukocyte antigen ,Biology ,Polymorphism, Single Nucleotide ,03 medical and health sciences ,Humans ,SNP ,Genetic Predisposition to Disease ,Allele ,Molecular Biology ,Allele frequency ,Alleles ,030304 developmental biology ,Chromosomes, Human, Pair 13 ,Haplotype ,Epistasis, Genetic ,Genetic Loci ,Case-Control Studies ,Imputation (genetics) - Abstract
To further characterize the genetic basis of primary biliary cirrhosis (PBC), we genotyped 2426 PBC patients and 5731 unaffected controls from three independent cohorts using a single nucleotide polymorphism (SNP) array (Immunochip) enriched for autoimmune disease risk loci. Meta-analysis of the genotype data sets identified a novel disease-associated locus near the TNFSF11 gene at 13q14, provided evidence for association at six additional immune-related loci not previously implicated in PBC and confirmed associations at 19 of 22 established risk loci. Results of conditional analyses also provided evidence for multiple independent association signals at four risk loci, with haplotype analyses suggesting independent SNP effects at the 2q32 and 16p13 loci, but complex haplotype driven effects at the 3q25 and 6p21 loci. By imputing classical HLA alleles from this data set, four class II alleles independently contributing to the association signal from this region were identified. Imputation of genotypes at the non-HLA loci also provided additional associations, but none with stronger effects than the genotyped variants. An epistatic interaction between the IL12RB2 risk locus at 1p31and the IRF5 risk locus at 7q32 was also identified and suggests a complementary effect of these loci in predisposing to disease. These data expand the repertoire of genes with potential roles in PBC pathogenesis that need to be explored by follow-up biological studies.
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- 2012