AI Article Synopsis

  • - A genome-wide association study identified specific genetic variants (SNPs) linked to elevated serum alanine aminotransferase (ALT) levels in a cohort of 892 anti-HCV seropositive patients, revealing 12 significant SNPs associated with ALT levels.
  • - The study particularly highlighted the SNP rs568800, where the A allele was linked to higher ALT levels and increased risk for hepatocellular carcinoma (HCC), indicated by adjusted odds ratios of 1.41 and 1.86 for different ALT thresholds.
  • - Findings suggest that rs568800 could be clinically relevant for monitoring ALT levels and assessing HCC risk in patients undergoing antiviral treatment, warranting further evaluation in such populations.

Article Abstract

Information on genetic variants associated with elevated serum alanine aminotransferase (ALT) levels remains limited. A genome-wide association study was performed to identify single-nucleotide polymorphisms (SNPs) associated with ALT levels. The ALT-associated SNP was further evaluated for hepatocellular carcinoma (HCC) risk. A cohort of 892 anti-HCV seropositive patients was used for genome-wide SNP array to examine the associations with baseline ALT levels. SNPs <10 were further tested for associations with serial ALT levels then validated in 486 anti-HCV seropositives. Multinomial logistic regressions were used to estimate odds ratios (ORs) and 95% confidence intervals of SNPs associated with ALT. The SNP was evaluated for HCC risk by using Cox's proportional hazards models. After quality control, 803 participants with 564,464 SNPs were included in the analysis. Of these, 12 SNPs were associated with ALT (p < 10 ). Among the participants, 158 (19.7%) had ALT persistently ≤15 U/L, 327 (40.7%) ever >15 U/L but never >45 U/L, and 318 (39.6%) ever >45 U/L during follow-up. The rs568800 was associated with serial ALT levels, and this was replicated in the external population significantly (p < .05). The A allele (vs C) of rs568800 was associated with ALT >15 U/L but ≤45 U/L and ALT >45 U/L, with the adjusted ORs of 1.41 (1.11-1.78) and 1.86 (1.34-2.60), respectively. The adjusted HRs for HCC were 2.09 (0.90-4.89) for AC and 2.64 (1.13-6.17) for AA (CC as a reference). In conclusion, the rs568800 was associated with serum ALT levels and HCC risk. Clinical utility should be evaluated among patients who have received antivirals.

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http://dx.doi.org/10.1111/jvh.13550DOI Listing

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