ObjectivesThe aim of the study was to investigate liver fibrosis outcome and the risk factors associated with liver fibrosis progression in hepatitis C virus (HCV)/HIV-coinfected patients.
MethodsWe prospectively obtained liver stiffness measurements by transient elastography in a cohort of 154 HCV/HIV-coinfected patients, mostly Caucasian men on suppressive antiretroviral treatment, with the aim of determining the risk for liver stiffness measurement (LSM) increase and to identify the predictive factors for liver fibrosis progression. To evaluate LSM trends over time, a linear mixed regression model with LSM level as the outcome and duration of follow-up in years as the main covariate was fitted.
ResultsAfter a median follow-up time of 40 months, the median increase in LSM was 1.05 kPa/year [95% confidence interval (CI) 0.72-1.38 kPa/year]. Fibrosis stage progression was seen in 47% of patients, and 17% progressed to cirrhosis. Aspartate aminotransferase (AST) levels and liver fibrosis stage at baseline were identified as independent predictors of LSM change. Patients with F3 (LSM 9.6-14.5 kPa) or AST levels ≥ 64 IU/L at baseline were at higher risk for accelerated LSM increase (ranging from 1.45 to 2.61 kPa/year), whereas LSM change was very slow among patients with both F0−F1 (LSM ≤ 7.5 kPa) and AST levels ≤ 64 IU/L at baseline (0.34 to 0.58 kPa/year). An intermediate risk for LSM increase (from 0.78 to 1.03 kPa/year) was seen in patients with F2 (LSM 7.6-9.5 kPa) and AST baseline levels ≤ 64 IU/L.
ConclusionsAST levels and liver stiffness at baseline allow stratification of the risk for fibrosis progression and might be clinically useful to guide HCV treatment decisions in HIV-infected patients.Keywords: hepatitis C virus, HIV coinfection, liver fibrosis, liver stiffness, transient elastography
IntroductionCoinfection with HIV and hepatitis C virus (HCV) is common, as HIV and HCV share similar routes of transmission.In Europe, approximately a third of patients who are HIVinfected are coinfected with HCV [1], and coinfection rates are as high as 60-95% among HIV-infected patients who have used injecting drugs or received blood transfusions [2][3][4]. Although sexual transmission of HCV is known to be rather inefficient in discordant heterosexual couples, recent observations suggest that this is the most likely mode of HCV acquisition among HIV-infected men who have sex The progression of HCV-associated liver fibrosis is accelerated among HIV-coinfected patients, and end-stage liver disease complications have emerged as the main cause of morbidity and mortality in this population [7,8]. Therefore, the recommendation to consider anti-HCV treatment in all HIV-coinfected patients [9] should be heeded, taking into account that HCV eradication prevents fibrosis progression [10,11] and leads to a decrease in both liver-related complications and mortality [10][11][12] as well as HIV progression and mortality not related to liver disease [13].However, the low chances of HCV eradication with the combination of interfe...