Objective To analyze the clinical characteristics of patients with chronic hepatitis C (CHC) and influencing factors for progression to liver cirrhosis.
Methods Total of 755 chronic hepatitis C (CHC) patients with positive hepatitis C virus (HCV) antibody, positive HCV RNA, and successful polymerase chain reaction (PCR) gene sequencing admitted to Qinghai Fourth People’s Hospital from January 2023 to December 2024 were collected, retrospectively. According to HCV genotype, the cases were divided into GT3 group (250 cases) and non-GT3 group (505 cases); according to whether progressed to liver cirrhosis after completing antiviral therapy, the cases were divided into liver cirrhosis group (575 cases) and non-liver cirrhosis group (180 cases). Gender, age, population classification, route of infection, treatment rate and liver inflammation indicators were compared between the two groups, respectively. The normally distributed and non-normally distributed measurement data were compared by independent samples t-test and non-parametric test, respectively; and the rates were compared by Pearson Chi-square test. The correlation between various baseline indicators of CHC patients and progression to liver cirrhosis were analyzed by Spearman rank correlation analysis. The independent influencing factors of progression to liver cirrhosis of CHC patients were analyzed by multiple factor Logistic regression model.
Results Among the 755 patients with CHC, the infection rate of HCV GT3 was 33.11% (250/755). Compared with patients of non-GT3 group, the GT3 group had a significantly higher proportion of males (197/250, 78.80%), cases aged 40-60 years old (224/250, 89.60%), unemployed individuals and farmers (219/250, 87.60%) and those with intravenous drug use as the route of infection (124/250, 49.60%), with significant differences (all P<0.001). The levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST), alpha-fetoprotein (AFP), total bilirubin (TBil), liver stiffness measurement (LSM) and APRI score of patients in GT3 group were significantly higher than those in non-GT3 group, with significant differences (all P<0.001). The platelet (PLT) count and SVR12 rate of patients in GT3 group were significantly lower than those in non-GT3 group (Z=-6.424, P<0.001: χ2=6.370, P=0.012), and the incidence of liver cirrhosis was significantly higher among patients in GT3 group (39.60% vs. 16.04%; χ2=51.121, P<0.001). Among the 250 patients infected with HCV GT3 subtype, the proportion of GT3b subtype was 71.6% (179/250). Compared with those infected with GT3a subtype, patients infected with GT3b subtype had a significantly older average age [(53.52±5.34) years old vs. (51.37±8.32) years old] and significantly higher AFP level [6.85 (3.61, 13.67) ng/ml vs. 5.05 (3.56, 8.89) ng/ml], with significant differences (t=8.574, P=0.046; Z=-2.303, P=0.021). Spearman rank correlation analysis showed that the progression to liver cirrhosis in patients with CHC was positively correlated with age (r=0.125, P<0.001), HCV GT3 infection (r=0.262, P<0.001), ALT (r=0.104, P=0.004), AST (r=0.304, P<0.001), APRI (r=0.510, P<0.001), AFP (r=0.183, P<0.001), LSM (r=0.671, P<0.001) and TBil (r=0.276, P<0.001), while negatively correlated with platelet (PLT) count (r=-0.408, P<0.001) and albumin level (r=-0.103, P=0.005). Multivariate Logistic regression analysis showed that HCV GT3 infection (OR=1.842, 95%CI: 1.584-2.192, P<0.001), AST (OR=1.008, 95%CI: 1.000-1.016, P=0.041), PLT (OR=0.992, 95%CI: 0.985-0.994, P<0.001), AFP (OR=1.012, 95%CI: 1.002-1.022, P=0.014), albumin (ALB) (OR=0.870, 95%CI: 0.781-0.969, P=0.011), age (OR=1.028, 95%CI: 1.011-1.044, P<0.001) and LSM (OR=1.430, 95%CI: 1.329-1.539, P<0.001) were all influencing factors for the progression to liver cirrhosis in CHC patients after completing antiviral treatment.
Conclusions HCV genotype 3 (especially subtype 3b) infection accounts for a significant proportion of CHC patients in Qinghai region, and is associated with a more aggressive clinical course and higher risk of liver cirrhosis. HCV genotype 3 infection, AST, PLT, AFP, ALB, age and LSM are all independent influencing factors for the progression to liver cirrhosis in patients with CHC.