HEPACOM: multicenter, observational prospective study of outcome and monitoring of HCV positive antiviral-naïve patients managed in the French health care system

Untreated alcohol use disorder in people who inject drugs (PWID) in France: a major barrier to HCV treatment uptake (the ANRS-FANTASIO study)

BACKGROUND AND AIMS

Although people who inject drugs (PWID) are the core at-risk population in the hepatitis C virus (HCV) epidemic in industrialized countries, few initiate treatment. Alcohol use disorder (AUD), common within this population, has been identified as a barrier to HCV treatment uptake in the general population. We investigated whether the arrival of new and well-tolerated HCV treatments (direct-acting antivirals: DAA) has improved HCV treatment uptake in French PWID compared with former treatments (pegylated interferon-based treatments: Peg-IFN).

DESIGN

Using discrete-time Cox proportional hazards models based on exhaustive care delivery data, we tested for associations between AUD (defined by AUD-related long-term illness status, diagnosis coding during hospitalization and/or AUD pharmacological treatment) and first HCV treatment delivery, after adjusting for gender, age, complementary universal health cover, liver disease severity and type of opioid agonist therapy (OAT) received. Separate analyses were performed for 2012-13 (Peg-IFN era) and 2014-16 (DAA era).

SETTING

France.

PARTICIPANTS

All French people chronically HCV-infected who received OAT at least once during 2012-16 and were covered by the national health insurance (n = 24 831).

MEASUREMENTS

Incidence rate of HCV treatment uptake, hazard ratios associated with AUD and other covariates.

FINDINGS

Incidence rate (IR) of HCV treatment uptake per 100 person-years was 6.56, confidence interval (CI) = 6.30-6.84; and IR = 5.70, 95% CI = 5.51-5.89 for Peg-IFN-based treatment (2012-13) and DAA (2014-16), respectively. After multiple adjustment, people with AUD not receiving related medication had 30 and 14% lower Peg-IFN-based treatment and DAA uptake, respectively, than those without AUD [hazard ratio (HR) = 0.70, 95% CI = 0.62-0.80 and HR = 0.86, 95% CI = 0.78-0.94]. No difference was observed between those treated for AUD and those without AUD.

CONCLUSIONS

Despite the benefits of direct-acting antiviral treatment, untreated alcohol use disorder appears to remain a major barrier to hepatitis C virus treatment access for people who inject drugs in France.

Hepatitis C virus-related complications are increasing in women veterans: A national cohort study

There are gender-specific variations in the epidemiology and clinical course of hepatitis C virus (HCV) infection. However, few long-term longitudinal studies have examined trends in the incidence and prevalence of serious liver complications among women compared with men with HCV infection. We used the Veterans Administration Corporate Data Warehouse to identify all veterans with positive HCV viraemia from January 2000 to December 2013. We calculated gender-specific annual incidence and prevalence rates of cirrhosis, decompensated cirrhosis and hepatocellular cancer (HCC) adjusting for age, diabetes, HIV and alcohol use. We also calculated the average annual per cent change (AAPC) for each outcome by gender using piecewise linear regression in the Joinpoint software. We identified 264 409 HCV-infected veterans during 2000-2013, of whom 7162 (2.7%) were women. There were statistically significant increases over time in the incidence rates of cirrhosis, decompensated cirrhosis and HCC for both men and women. The annual-adjusted incidence rates of cirrhosis, decompensated cirrhosis and HCC were higher in men than women for all study years. However, these complications increased at a similar rate in both groups. Specifically, the AAPC for cirrhosis was 13.1 and 15.2, while it was 15.6 and 16.9 for decompensated cirrhosis and 21.0 and 25.3 for HCC in men and women, respectively (all test of parallelism not significant). The results were similar in the prevalence analyses, although AAPCs were slightly smaller for each outcome. In conclusion, we found an ongoing upward trend in the incidence and prevalence of HCV complications in this cohort of HCV-infected women. This increase in cirrhosis complications in women with active HCV infection is similar to those in men. With cure from HCV now becoming a reality, most of the projected burden of HCV is potentially preventable. However, benefits of HCV treatment will need to extend to all patients in order to stem the rising tide of HCV complications.

Hepatitis C virus infection epidemiology among people who inject drugs in Europe: a systematic review of data for scaling up treatment and prevention

BACKGROUND

People who inject drugs (PWID) are a key population affected by hepatitis C virus (HCV). Treatment options are improving and may enhance prevention; however access for PWID may be poor. The availability in the literature of information on seven main topic areas (incidence, chronicity, genotypes, HIV co-infection, diagnosis and treatment uptake, and burden of disease) to guide HCV treatment and prevention scale-up for PWID in the 27 countries of the European Union is systematically reviewed.

METHODS AND FINDINGS

We searched MEDLINE, EMBASE and Cochrane Library for publications between 1 January 2000 and 31 December 2012, with a search strategy of general keywords regarding viral hepatitis, substance abuse and geographic scope, as well as topic-specific keywords. Additional articles were found through structured email consultations with a large European expert network. Data availability was highly variable and important limitations existed in comparability and representativeness. Nine of 27 countries had data on HCV incidence among PWID, which was often high (2.7-66/100 person-years, median 13, Interquartile range (IQR) 8.7-28). Most common HCV genotypes were G1 and G3; however, G4 may be increasing, while the proportion of traditionally 'difficult to treat' genotypes (G1+G4) showed large variation (median 53, IQR 43-62). Twelve countries reported on HCV chronicity (median 72, IQR 64-81) and 22 on HIV prevalence in HCV-infected PWID (median 3.9%, IQR 0.2-28). Undiagnosed infection, assessed in five countries, was high (median 49%, IQR 38-64), while of those diagnosed, the proportion entering treatment was low (median 9.5%, IQR 3.5-15). Burden of disease, where assessed, was high and will rise in the next decade.

CONCLUSION

Key data on HCV epidemiology, care and disease burden among PWID in Europe are sparse but suggest many undiagnosed infections and poor treatment uptake. Stronger efforts are needed to improve data availability to guide an increase in HCV treatment among PWID.

Access to care of patients with chronic hepatitis C virus infection in a university hospital: Is opioid dependence a limiting condition?

BACKGROUND

We aimed to examine access to care of opioid-dependent patients with chronic hepatitis C.

METHODS

A standardized form was used to conduct a retrospective survey from 1999 to 2003 in a French university hospital. All HCV RNA positive in- or outpatients who had not had a liver biopsy or anti-HCV treatment were included. Opioid-dependence was defined as active opioid drug use or being on opioid substitution treatment.

RESULTS

The survey included 580 patients; 137 (23.6%) were opioid-dependent. Fewer patients with than without current opioid dependence had had genotyping (40.1% versus 67.7%, p<0.001), liver biopsy (51.8% versus 62.8%, p=0.022), and anti-HCV treatment (8.8% versus 18.3%, p=0.008). Genotyping was independently, negatively, associated with: (1) current opioid-dependence (OR=0.3, 95%CI=0.2-0.5), (2) former opioid-dependence (OR=0.5, 95%CI=0.3-0.9), (3) unemployment (OR=0.5, 95%CI=0.3-0.7), and (4) HCV infection discovered by screening (OR=0.5, 95%CI=0.3-0.7). Access to liver biopsy was independently, negatively associated with current opioid-dependence (OR=0.6, 95%CI=0.4-0.9), but positively associated with alcohol consumption (OR=2.0, 95%CI=1.2-3.4) and abnormal ALT level (OR=2.2, 95%CI=1.5-3.2). Access to anti-HCV treatment was independently, negatively associated with HCV infection discovered by screening (OR=0.5, 95%CI=0.3-0.9), but positively associated with moderate hepatitis (OR=6.8, 95%CI=2.8-16.8), extensive fibrosis or cirrhosis (OR=12.3, 95%CI=5.5-27.5), abnormal ALT level (OR=2.1, 95%CI=1.3-3.6) and age (40-64 years) (OR=1.9, 95%CI=1.0-3.4).

CONCLUSIONS

Genotyping and liver biopsies were performed less frequently on current opioid dependent patients. Absence of genotyping was also independently associated with unemployment and former opioid-dependence. Alcohol consumption or abnormal ALT levels favored access to biopsy. Histological grade strongly conditioned access to anti-HCV treatment.