ArticleMemorias do Instituto Oswaldo Cruz2026
Association of p-glycoprotein and bile salt export pump gene polymorphisms with advanced liver disease in hepatitis C virus infected patients.
Article in Memorias do Instituto Oswaldo Cruz, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundSingle-nucleotide polymorphisms (SNPs) can influence the hepatitis C virus (HCV) infection and progression. ABCB1-gene SNPs - c.1236C>T, c.2677G>T and c.3435C>T - are associated with drug efficacy, hepatotoxicity, and liver injury. ABCB11 c.1331T>C is associated with cholestasis and altered bilirubin levels, potentially worsening liver disease.
objectiveTo investigate the impact of ABCB1 and ABCB11 SNPs on disease progression in chronic HCV patients.
methodsA total of 232 HCV patients unresponsive to conventional therapy were analysed. Serum samples were genotyped by quantitative polymerase chain reaction (qPCR), and the genotype and allele-based analysis was performed using RStudio.
findingsCirrhosis was present in 59.1% of patients, along with diabetes (28.4%) and hepatic steatosis (46.1%). The most frequent ABCB1 variant allele was c.3435C>T (36.8%), followed by c.1236C>T (30.8%) and c.2677G>T (26.7%). The ABCB11 c.1331CC genotype was observed in 31.3% of the cohort. Genotypes 1236TT and 2677TT and their alleles were associated with lower total cholesterol. 2677TT genotype and 2677T allele were associated with lower high-density lipoprotein. Patients with 1331CC genotype had higher aspartate aminotransferase levels, and the 1331CC genotype was a risk factor for cirrhosis. A fully variant combined allele (1236T and 2677T and 3435T and 1331C) was associated with higher alpha-fetoprotein and lower cholesterol. MAIN
conclusionsABCB1 and ABCB11 SNPs are associated with worse clinical outcomes in HCV, underscoring their relevance in disease monitoring.
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