Association of APOE-C1 gene cluster polymorphisms with gallstone disease

BackgroundGenetic polymorphisms in apolipoprotein genes may be associated with alteration in lipid profile and susceptibility to gallstone disease.AimTo find out the association of APOE HhaI and APOC1 HpaI polymorphisms with gallstone disease.SubjectsHhaI polymorphism of APOE and HpaI polymorphism of APOC1 were analysed in DNA samples of 214 gallstone patients and 322 age- and sex-matched healthy controls.MethodsFor genotyping DNA samples of all study subjects were amplified using polymerase chain reaction, followed by restriction digestion. All statistical analyses were done using SPSS v11.5 and ARLEQUIN v2.0 softwares.ResultAPOC1 HpaI polymorphism was found to be significantly associated with gallstone disease. Frequency of H2H2 was significantly higher (P = 0.017) in patients than in controls and it was imposing very high risk (OR 9.416, 95% CI 1.125–78.786) for gallstone disease. When data were stratified in male and female, H2H2 was associated (P = 0.011) with disease in females only. Analysis at allele level revealed no association. APOE HhaI polymorphism and APOE-C1 haplotypes showed no association with gallstone disease.ConclusionAPOC1 HpaI polymorphism is associated with gallstone disease and shows gender-specific differences. APOE HhaI polymorphism may not be associated with gallstone disease.