TY - JOUR
T1 - Peculiar HLA polymorphisms in Italian patients with primary biliary cirrhosis
AU - Invernizzi, Pietro
AU - Maria Battezzati, Pier
AU - Crosignani, Andrea
AU - Perego, Francesca
AU - Poli, Francesca
AU - Morabito, Alberto
AU - De Arias, Alejandro Espadas
AU - Scalamogna, Mario
AU - Zuin, Massimo
AU - Podda, Mauro
PY - 2003/4/1
Y1 - 2003/4/1
N2 - Background/Aims: Primary biliary cirrhosis (PBC) is an autoimmune cholestatic liver disease of unknown etiology with a highly variable progression rate and prevalence among different geographical areas. Data concerning human leukocyte antigen (HLA) polymorphisms in PBC come from a limited number of geographical areas, from which the association with the HLA-DRB1*08 allele has been consistently reported. Methods: To investigate whether HLA polymorphisms contribute toward disease susceptibility, we compared 186 well-defined Italian PBC patients with 558 healthy subjects matched by age, gender and geographical area (Northern, Central and Southern Italy). Patients and controls were HLA typed at low resolution by PCR-sequence specific oligonucleotides for the loci A and B; HLA-DRB1 alleles were typed by reverse line blot assay of PCR-amplified DNA. Results: HLA-DRB1*11 was associated with a markedly reduced risk of developing PBC (OR: 0.3; 95% CI: 0.2-0.5). No association was found with HLA-DRB1*08. The B*15 (2.5; 1.3-4.6), B*41 (12.0; 2.7-72.1), B*55 (2.9; 1.1-7.5) and B*58 alleles (6.8; 1.1-46.3) were more frequent in PBC. The frequency of HLA polymorphisms was similar in PBC patients with progressive or non-progressive disease, and in those with or without anti-mitochondriai antibodies. Conclusions: Our data on a large series of Italian patients suggest that PBC may have a peculiar genetic background in the Mediterranean area.
AB - Background/Aims: Primary biliary cirrhosis (PBC) is an autoimmune cholestatic liver disease of unknown etiology with a highly variable progression rate and prevalence among different geographical areas. Data concerning human leukocyte antigen (HLA) polymorphisms in PBC come from a limited number of geographical areas, from which the association with the HLA-DRB1*08 allele has been consistently reported. Methods: To investigate whether HLA polymorphisms contribute toward disease susceptibility, we compared 186 well-defined Italian PBC patients with 558 healthy subjects matched by age, gender and geographical area (Northern, Central and Southern Italy). Patients and controls were HLA typed at low resolution by PCR-sequence specific oligonucleotides for the loci A and B; HLA-DRB1 alleles were typed by reverse line blot assay of PCR-amplified DNA. Results: HLA-DRB1*11 was associated with a markedly reduced risk of developing PBC (OR: 0.3; 95% CI: 0.2-0.5). No association was found with HLA-DRB1*08. The B*15 (2.5; 1.3-4.6), B*41 (12.0; 2.7-72.1), B*55 (2.9; 1.1-7.5) and B*58 alleles (6.8; 1.1-46.3) were more frequent in PBC. The frequency of HLA polymorphisms was similar in PBC patients with progressive or non-progressive disease, and in those with or without anti-mitochondriai antibodies. Conclusions: Our data on a large series of Italian patients suggest that PBC may have a peculiar genetic background in the Mediterranean area.
KW - Genetic liver diseases
KW - Human leukocyte antigens
KW - Primary biliary cirrhosis
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U2 - 10.1016/S0168-8278(02)00440-3
DO - 10.1016/S0168-8278(02)00440-3
M3 - Article
C2 - 12663229
AN - SCOPUS:0037386114
VL - 38
SP - 401
EP - 406
JO - Journal of Hepatology
JF - Journal of Hepatology
SN - 0168-8278
IS - 4
ER -