Analysis of Hepatitis C Virus Genotypes and RNA Quantitative Values in Cheonan, Korea from 2007 to 2016
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The hepatitis C virus (HCV) genome contains a positive-sense single-stranded RNA molecule, and it is classified into 8 genotypes and 87 subtypes. Globally, over 350,000 people die from liver cirrhosis and hepatocellular carcinoma caused by HCV each year. Here, the genotype distribution of HCV was estimated in the population in Cheonan, Korea using Sanger sequencing. In addition, the correlation between HCV RNA level and genotype was assessed using real-time polymerase chain reaction (PCR); similarly, the correlation of HCV RNA level with isolation year (2007-2016) was determined using 463 consecutive serum samples obtained from patients at Dankook University Hospital, Cheonan, Korea. In 2007, genotype 1b (54.2%) was predominant, followed by genotypes 2a (41.7%), 1a (2.1%) and 3a (2.1%); whereas in 2016, the predominant genotype was 2a (49.0%), followed by genotypes 1b (46.9%), 3b (2%), and 4a (2%). Neither age nor sex was correlated with HCV genotype. Furthermore, the mean HCV RNA level decreased significantly from 2012 to 2016 (p < 0.05). However, no significant correlations between genotype and HCV RNA level were found. Overall, the findings revealed that genotypes 2a and 1b were the most common in Cheonan, and the prevalence of HCV genotype 1b tended to decrease over the past decade.
Abstract
The hepatitis C virus (HCV) genome contains a positive-sense single-stranded RNA molecule, and it is classified into 8 genotypes and 87 subtypes. Globally, over 350,000 people die from liver cirrhosis and hepatocellular carcinoma caused by HCV each year. Here, the genotype distribution of HCV was estimated in the population in Cheonan, Korea using Sanger sequencing. In addition, the correlation between HCV RNA level and genotype was assessed using real-time polymerase chain reaction (PCR); similarly, the correlation of HCV RNA level with isolation year (2007-2016) was determined using 463 consecutive serum samples obtained from patients at Dankook University Hospital, Cheonan, Korea. In 2007, genotype 1b (54.2%) was predominant, followed by genotypes 2a (41.7%), 1a (2.1%) and 3a (2.1%); whereas in 2016, the predominant genotype was 2a (49.0%), followed by genotypes 1b (46.9%), 3b (2%), and 4a (2%). Neither age nor sex was correlated with HCV genotype. Furthermore, the mean HCV RNA level decreased significantly from 2012 to 2016 (p < 0.05). However, no significant correlations between genotype and HCV RNA level were found. Overall, the findings revealed that genotypes 2a and 1b were the most common in Cheonan, and the prevalence of HCV genotype 1b tended to decrease over the past decade.
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