Engagement in Care of High-Risk Hepatitis C Patients with Interferon-Free Direct-Acting Antiviral Therapies

Infectious Diseases Among People Experiencing Homelessness: A Systematic Review of the Literature in the United States and Canada, 2003-2022

Homelessness increases the risk of acquiring an infectious disease. We conducted a systematic review of the literature to identify quantitative data related to infectious diseases and homelessness. We searched Google Scholar, PubMed, and SCOPUS for quantitative literature published from January 2003 through December 2022 in English from the United States and Canada. We excluded literature on vaccine-preventable diseases and HIV because these diseases were recently reviewed. Of the 250 articles that met inclusion criteria, more than half were on hepatitis C virus or Mycobacterium tuberculosis. Other articles were on COVID-19, respiratory syncytial virus, Staphylococcus aureus, group A Streptococcus, mpox (formerly monkeypox), 5 sexually transmitted infections, and gastrointestinal or vectorborne pathogens. Most studies showed higher prevalence, incidence, or measures of risk for infectious diseases among people experiencing homelessness as compared with people who are housed or the general population. Although having increased published data that quantify the infectious disease risks of homelessness is encouraging, many pathogens that are known to affect people globally who are not housed have not been evaluated in the United States or Canada. Future studies should focus on additional pathogens and factors leading to a disproportionately high incidence and prevalence of infectious diseases among people experiencing homelessness.

Socio-economic factors associated with loss to follow-up among individuals with HCV: A Dutch nationwide cross-sectional study

BACKGROUND AND AIMS

The path to hepatitis C virus (HCV) elimination is complicated by individuals who become lost to follow-up (LTFU) during care, particularly before receiving effective HCV treatment. We aimed to determine factors contributing to LTFU and whether LTFU is associated with mortality.

METHODS

In this secondary analysis, we constructed a database including individuals with HCV who were either LTFU (data from the nationwide HCV retrieval project, CELINE) or treated with directly acting antivirals (DAA) (data from Statistics Netherlands) between 2012 and 2019. This database was linked to mortality data from Statistics Netherlands. Determinants associated with being LTFU versus DAA-treated were assessed using logistic regression, and mortality rates were compared between groups using exponential survival models. These analyses were additionally stratified on calendar periods: 2012-2014, 2015-2017 and 2018-2019.

RESULTS

About 254 individuals, LTFU and 5547 DAA-treated were included. Being institutionalized (OR = 5.02, 95% confidence interval (CI) = 3.29-7.65), household income below the social minimum (OR = 1.96, 95% CI = 1.25-3.06), receiving benefits (OR = 1.74, 95% CI = 1.20-2.52) and psychiatric comorbidity (OR = 1.51, 95% CI = 1.09-2.10) were associated with LTFU. Mortality rates were significantly higher in individuals LTFU compared to those DAA-treated (2.99 vs. 1.15/100 person-years (PY), p < .0001), while in those DAA-treated, mortality rates slowly increased between 2012-2014 (.22/100PY) and 2018-2019 (2.25/100PY).

CONCLUSION

In the Netherlands, individuals who are incarcerated/institutionalized, with low household income, or with psychiatric comorbidities are prone to being LTFU, which is associated with higher mortality. HCV care needs to be adapted for these vulnerable individuals.

Perceptions Towards HCV Treatment with Direct Acting Antivirals (DAAs): A Qualitative Analysis with Persons with HIV/HCV Co-infection Who Delay or Refuse Treatment

In the United States, approximately 25% of people with HIV (PWH) are co-infected with hepatitis C (HCV). Since 2014, highly effective and well-tolerated direct-acting antivirals (DAAs) have revolutionized HCV treatment. Uptake of DAAs by people with HIV/HCV co-infection has improved but remains suboptimal due to system, provider, and patient-level barriers. To explore patient-level issues by better understanding their attitudes towards DAA treatment, we conducted qualitative interviews with 21 persons with HIV/HCV co-infection who did not consent to DAA treatment or delayed treatment for at least 1 year after diagnosis. We found PWH perceived DAA treatment barriers and facilitators on multiple levels of the social-ecological environment: the individual (HCV disease and treatment literacy), interpersonal (peer influence), institutional (media and healthcare provider relationship), and structural levels (treatment cost and adherence support). Recommendations to improve DAA treatment uptake include HCV-treatment adherence support, HCV disease and treatment literacy training (particularly for substance use and DAA treatment interactions), and encouraging PWH who have successfully completed DAA treatment to speak with their peers.

Innovative Approaches to Engaging Homeless and Marginally Housed Patients in Care: a Case Study of Hepatitis C

BACKGROUND

Homeless and marginally housed (HAMH) individuals experience significant health disparities compared to housed counterparts, including higher hepatitis C virus (HCV) rates. New direct-acting antiviral (DAA) medications dramatically increased screening and treatment rates for HCV overall, but inequities persist for HAMH populations.

OBJECTIVE

This study examines the range of policies, practices, adaptations, and innovations implemented by Veteran Affairs Medical Centers (VAMCs) in response to Veterans Health Administration (VHA)'s 2016 HCV funding allocation to expand provision of HCV care.

DESIGN

Ethnographic site visits to six US VAMCs varying in size, location, and availability of Homeless Patient-Aligned Care Teams. Semi-structured qualitative interviews informed by the HCV care continuum were conducted with providers, staff, and HAMH patients to elicit experiences providing and receiving HCV care. Semi-structured field note templates captured clinical care observations. Interview and observation data were analyzed to identify cross-cutting themes and strategies supporting tailored HCV care for HAMH patients.

PARTICIPANTS

Fifty-six providers and staff working in HCV and/or homelessness care (e.g., infectious disease providers, primary care providers, social workers). Twenty-five patients with varying homeless experiences, including currently, formerly, or at risk of homelessness (n=20) and stably housed (n=5).

KEY RESULTS

All sites experienced challenges with continued engagement of HAMH individuals in HCV care, which led to the implementation of targeted care strategies to better meet their needs. Across sites, we identified 35 unique strategies used to find, engage, and retain HAMH individuals in HCV care.

CONCLUSIONS

Despite highly effective, widely available HCV treatments, HAMH individuals continue to experience challenges accessing HCV care. VHA's 2016 HCV funding allocation resulted in rapid adoption of strategies to engage and retain vulnerable patients in HCV treatment. The strategies identified here can help healthcare institutions tailor and target approaches to provide sustainable, high-quality, equitable care to HAMH individuals living with HCV and other chronic illnesses.

Predictors of linkage to hepatitis C virus care among people living with HIV with hepatitis C infection and the impact of loss to HIV follow‐up

Objective

Half of the people living with HIV (PLWH) with hepatitis C virus (HCV) remain untreated for HCV. We examined predictors of HCV linkage to care among PLWH and the impact of HIV lost to care.

Design and methods

We conducted a retrospective review of PLWH/HCV from our HIV clinics between 2014 and 2017, and examined predictors of HCV linkage to care. We used the Kaplan–Meier method to estimate the probability of HIV retention and HCV linkage over time.

Results

Of 615 PLWH/HCV, 34% linked to HCV care and 21% were cured. Higher odds of linkage to HCV care were among blacks (adjusted odds ratio [aOR]: 2.95, 95% confidence interval [CI]: 1.59, 5.47), prior injection drug users (IDUs; aOR: 2.89, 95% CI: 1.39, 6.01), Medicare (aOR: 3.09, 95% CI: 1.56, 6.11), and cirrhotics (aOR: 2.80, 95% CI: 1.52, 5.14). Reduced odds for linkage were in active IDU (aOR: 0.16, 95% CI: 0.05, 0.45) and those seen by an advanced practice provider (aOR: 0.53, 95% CI: 0.30, 0.92). The main reason for failure to link to HCV care was lost to HIV care. At 3 years, the overall probability of being retained in HIV care was 53%; among those who had an HCV evaluation visit, it was 75% vs. 41% with no HCV evaluation visit. Accounting for loss to follow‐up, PLWH/HCV had a 65% probability of having an HCV evaluation at 3 years.

HCV is a curable infection in those with or without HIV. Yet, high proportions of people living with HIV with HCV remain untreated for HCV, leading to complications of liver disease and death. Our study found that only one‐third of HIV/HCV patients were linked to HCV care. The main reason for not linking to HCV care was that increasing numbers of patients drop out of HIV care over time. Our study suggests that early focus on HCV treatment would increase the number of patients cured, but it is unclear whether this would impact retention in HIV care.

HCV Cure and Cannabis Abstinence Facilitate Tobacco Smoking Quit Attempts in HIV-HCV Co-Infected Patients (ANRS CO13 HEPAVIH Cohort Study)

In Western countries, tobacco smoking is highly prevalent among patients co-infected with HIV and hepatitis C virus (HCV). In the era of antiretrovirals and HCV cure, smoking-related health damages contribute greatly to morbidity and mortality in HIV-HCV co-infected patients. We used longitudinal data from the ANRS CO13 HEPAVIH cohort to identify the correlates of tobacco smoking quit attempts (TSQA) in HIV-HCV co-infected patients. TSQA were modelled using a multivariable discrete-time Cox proportional hazards model in 695 HIV-HCV co-infected tobacco smokers. HCV cure was associated with a 76% higher chance of TSQA (adjusted hazard ratio [95% confidence interval]: 1.76 [1.06-2.93], p = 0.029), and cannabis use with a 37% lower chance (0.63 [0.40-1.00], p = 0.049), independently of the mode of HIV transmission, other psychoactive substance use, and body mass index. Patients should be screened for tobacco and cannabis use at HCV treatment initiation and during follow-up. They should also be provided with comprehensive counselling and referral to addiction services. Non-smoking routes of cannabis administration should be promoted for cannabis users who wish to quit smoking tobacco.

Hepatitis C virus care cascade in persons experiencing homelessness in the United States in the era of direct-acting antiviral agents: A scoping review

The hepatitis C virus (HCV) care cascade has been well characterized in the general United States population and other subpopulations since curative medications have been available. However, information is limited on care cascade outcomes in persons experiencing homelessness. The main objective of this study was to map the available evidence on HCV care cascade outcomes in people experiencing homelessness in the U.S. in the era of direct-acting antiviral agents (DAAs). Primary and secondary outcomes included linkage to care (evaluation by a provider that can treat HCV) and sustained virologic response (SVR) or cure. Exploratory outcomes included other cascade data, like treatment initiation, which precedes SVR. PubMed was the primary database accessed for this scoping review. We characterized the HCV care cascade in people experiencing homelessness using sources of evidence published in 2014 onwards that reported the proportions of persons who were linked to care, achieved SVR, and completed other cascade steps. We synthesized our results into a scoping review. The proportion of persons linked to care among chronically infected cohorts with unstable housing ranged from 29.3% to 88.7%. Among those chronically infected, 5%-58.8% were started on DAAs and 5%-50% achieved SVR. In conclusion, these results show that persons experiencing homelessness achieve high rates of linkage to care in non-specialist community-based settings compared to the general U.S. population pre-DAAs. However, DAA initiation was found to be a rate-limiting step along the care cascade, resulting in commensurate low rates of cure.

Shelter-Based Integrated Model Is Effective in Scaling Up Hepatitis C Testing and Treatment in Persons Experiencing Homelessness

Hepatitis C virus (HCV) prevalence is high among people experiencing homelessness, but barriers to scaling up HCV testing and treatment persist. We aimed to implement onsite HCV testing and education and evaluate the effectiveness of low‐barrier linkage to HCV therapy among individuals accessing homeless shelters. HCV rapid testing was performed at four large shelters in San Francisco (SF) and Minneapolis (MN). Sociodemographic status, HCV risk, barriers to testing, and interest in therapy were captured. Participants received information about HCV. Those testing positive underwent formal HCV education and onsite therapy. Multivariable modeling assessed predictors of receipt of HCV therapy and sustained virologic response (SVR). A total of 766 clients were tested. Median age was 53.7 years, 68.2% were male participants, 46.3% were Black, 27.5% were White, 13.2% were Hispanic, and 57.7% had high school education or less; 162 (21.1%) were HCV antibody positive, 107 (66.0%) had detectable HCV RNA (82.1% with active drug use, 53.8% history of psychiatric illness), 66 (61.7%) received HCV therapy, and 81.8% achieved SVR. On multivariate analysis, shelter location (MN vs. SF, odds ratio [OR], 0.3; P = 0.01) and having a health care provider (OR, 4.1; P = 0.02) were associated with receipt of therapy. On intention to treat analysis, the only predictor of SVR when adjusted for age, sex, and race was HCV medication adherence (OR, 14.5; P = 0.01). Conclusion: Leveraging existing homeless shelter infrastructure was successful in enhancing HCV testing and treatment uptake. Despite high rates of active substance use, psychiatric illness, and suboptimal adherence, over 80% achieved HCV cure. This highlights the critical importance of integrated models in HCV elimination efforts in people experiencing homelessness that can be applied to other shelter settings.

HCV treatment barriers among HIV/HCV co-infected patients in the US: a qualitative study to understand low uptake among marginalized populations in the DAA era

BACKGROUND

Well-tolerated, highly effective HCV treatment, known as direct-acting antivirals (DAAs), is now recommended for all people living with HCV, providing the tools for HCV elimination. We sought to understand treatment barriers among low-income HIV/HCV coinfected patients and providers with the goal of increasing uptake.

METHODS

In 2014, we conducted 26 interviews with HIV/HCV co-infected patients and providers from a San Francisco clinic serving underinsured and publically-insured persons to explore barriers impacting treatment engagement and completion. Interview transcripts were coded, and a thematic analysis was conducted to identify emerging patterns.

RESULTS

Conditions of poverty-specifically, meeting basic needs for food, shelter, and safety-undermined patient perceptions of self-efficacy to successfully complete HCV treatment programs. While patient participants expressed interest in HCV treatment, the perceived burden of taking daily medications without strong social support was an added challenge. This need for support contradicted provider assumptions that, due to the shorter-course regimens, support is unnecessary in the DAA era.

CONCLUSIONS

Interferon-free treatments alone are not sufficient to overcome social-structural barriers to HCV treatment and care among low-income HIV/HCV co-infected patients. Support for patients with unmet social needs may facilitate treatment initiation and completion, particularly among those in challenging socioeconomic situations.

Patient and healthcare provider experiences of hepatitis C treatment with direct-acting antivirals in Rwanda: a qualitative exploration of barriers and facilitators

BACKGROUND

Direct-acting antivirals (DAAs) are increasingly accessible to patients with hepatitis C (HCV) worldwide and are being introduced through national health systems in sub-Saharan Africa. DAAs are highly efficacious when tested in controlled trials, yet patients treated outside of study settings often encounter challenges in completing the full treatment and follow-up sequence. Little information is available on the influences of successful DAA implementation in sub-Saharan Africa. This qualitative study explored the individual- and system-level barriers and enablers of DAA treatment in Rwanda between March 2015 and November 2017.

METHODS

Face-to-face interviews were conducted with 39 patients who initiated care at one of four referral hospitals initially offering DAAs. Ten healthcare providers who managed HCV treatment participated in face-to-face interviews to examine system-level barriers and facilitators. Interview data were analyzed using a general inductive approach in alignment with the a priori objective of identifying barriers and facilitators of HCV care.

RESULTS

Barriers to successful treatment included patients' lack of knowledge surrounding HCV and its treatment; financial burdens associated with paying for medication, laboratory testing, and transportation; the cumbersome nature of the care pathway; the relative inaccessibility of diagnostics technology; and heavy workloads of healthcare providers accompanied by a need for additional HCV-specific training. Patients and healthcare providers were highly aligned on individual- and system-level barriers to care. The positive patient-provider relationship, strong support from community and family members, lack of stigma, and mild side effect profile of DAAs all positively influenced patients' engagement in treatment.

CONCLUSIONS

Several interrelated factors acted as barriers and facilitators to DAA treatment in Rwanda. Patients' and healthcare providers' perceptions were in agreement, suggesting that the impeding and enabling factors were well understood by both groups. These results can be used to enact evidence-informed interventions to help maximize the impact of DAAs as Rwanda moves towards HCV elimination.

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.

Predictors of linkage to care for a nontargeted emergency department hepatitis C screening program

OBJECTIVE

We implemented a nontargeted, opt-out HCV testing and linkage to care (LTC) program in an academic tertiary care emergency department (ED). Despite research showing the critical role of ED-based HCV testing programs, predictors of LTC have not been defined for patients identified through the nontargeted ED testing strategy. In order to optimize health outcomes for patients with HCV, we sought to identify predictors of LTC failure.

METHODS

This was a retrospective cohort study of adult patients who were tested for HCV in the ED between August 2015 and September 2018 and were confirmed to have chronic HCV infection through RNA testing. We used logistic regression to assess the relationship between candidate predictors and the primary outcome, LTC failure, which was defined as a patient not being seen by an HCV treating provider after discharge from the ED.

RESULTS

Of 53,297 patients tested, 1,674 (3.1%) had HCV on confirmatory testing, and 355 (21%) linked to care. Predictors of LTC failure included younger age (OR 0.96, 95% CI 0.95-0.97), white race (OR 1.65, 95% CI 1.23-2.22), homelessness (OR 1.91, 95% CI 1.19-3.08), substance use (OR 1.77, 95% CI 1.34-2.34), and comorbid psychiatric illness (OR 2.16, 95% CI 1.59-2.94). Patients with significant medical comorbidities (OR 0.57, 95% CI 0.41-0.78) or HIV co-infection (OR 0.11, 95% CI 0.03-0.46) were less likely to experience LTC failure.

CONCLUSIONS

One in five HCV-infected patients identified by ED-based nontargeted testing successfully linked to an HCV treating provider. Predictors of LTC failure may guide the development of targeted interventions to improve LTC success.

Disparities in Hepatitis C Linkage to Care in the Direct Acting Antiviral Era: Findings From a Referral Clinic With an Embedded Nurse Navigator Model

Background: Direct acting antivirals (DAAs) have simplified and expanded access to Hepatitis C virus (HCV) treatment. Only 17% of the 2.4 million Americans with HCV have linked to HCV care. We aimed to evaluate linkage to care (LTC) in a non-urban HCV referral clinic with a nurse navigator model and identify disparities in LTC. Methods: A single-center retrospective cohort analysis was performed among all patients referred to an infectious diseases HCV clinic between 2014 and 2018. The primary outcome was LTC, defined as attendance at a clinic appointment. A multivariable Poisson regression model estimated the association of variables with LTC. Results: Among 824 referred patients, 624 (76%) successfully linked to care and 369 (45%) successfully achieved sustained virologic response. Forty-six percent of those referred were uninsured. On multivariable analysis, LTC rates were higher among women (Incidence Rate Ratio [IRR] 1.11, 95% CI 1.03-1.20, p-value = 0.01) and people with cirrhosis (IRR 1.20, 95% CI 1.11-1.30, p-value < 0.001). Lower LTC rates were found for young people (<40 years; IRR 0.88, 95% CI 0.79-0.98, p-value = 0.02) and uninsured people (IRR 0.85, 95% CI 0.77-0.94, p-value = 0.002). Among those without LTC, 10% were incarcerated. Race, proximity to care, substance use, and HIV status were not associated with LTC. Conclusions: Using an embedded nurse navigator model, high LTC rates were achieved despite the prevalence of barriers, including a high uninsured rate. Disparities in LTC based on age, sex, and insurance status are present. Substance use was not associated with LTC. Future interventions to improve care should include expanded access to insurance and programs bridging care for incarcerated populations.

Building a Hepatitis C Clinical Program: Strategies to Optimize Outcomes

PURPOSE OF REVIEW

An increasing number of specialists and non-specialists are developing clinical programs to treat and cure hepatitis C virus (HCV). The goal of this paper is to evaluate and describe optimal strategies to improve outcomes related to HCV care delivery.

RECENT FINDINGS

Screening and diagnosis of HCV should be guided by established recommendations. Given the recognized disparity in HCV diagnosis and linkage to care, a multi-modal approach involving care coordination and technology resources should be used to improve patient engagement. Access to HCV treatment may be optimized through systematic documentation, prior authorization, and appeal processes. Treatment monitoring should emphasize medication adherence, side effect and drug interaction management, as well as elimination of practical barriers. Finally, post-treatment engagement to promote liver health and reduce the risk of complications or reinfection maximizes the benefit of HCV treatment.

SUMMARY

The landscape of HCV treatment has evolved from a specialist-driven model with few patients qualifying for treatment to an opportunity for non-specialists and other providers to provide curative therapies in most patients. Innovative practice models that employ a multidisciplinary approach will likely improve screening, diagnosis, engagement, and treatment outcomes.

Direct-acting antiviral sustained virologic response: Impact on mortality in patients without advanced liver disease

The impact of sustained virologic response (SVR) on mortality after direct-acting antiviral (DAA) treatment is not well documented in patients without advanced liver disease and affects access to treatment. This study evaluated the impact of SVR achieved with interferon-free DAA treatment on all-cause mortality in hepatitis C virus-infected patients without advanced liver disease. This observational cohort analysis was comprised of 103,346 genotype 1, 2, and 3, hepatitis C virus-monoinfected patients without advanced liver disease, defined by FIB-4 ≤3.25 and no diagnosis of cirrhosis, hepatic decompensation, or hepatocellular carcinoma or history of liver transplantation, identified from the Veterans Affairs Hepatitis C Clinical Case Registry. Among 40,664 patients treated with interferon-free DAA regimens, 39,374 (96.8%) achieved SVR and 1,290 (3.2%) patients were No SVR; 62,682 patients constituted the untreated cohort. The mortality rate for SVR patients of 1.18 deaths/100 patient-years was significantly lower than the rates for both No SVR patients (2.84 deaths/100 patient-years; P < 0.001) and untreated patients (3.84 deaths/100 patient-years; P < 0.001). SVR patients with FIB-4 <1.45 and 1.45-3.25 had a 46.0% (P = 0.036) and 63.2% (P < 0.001) reduction in mortality rates, respectively, compared to No SVR patients and 66.7% (P < 0.001) and 70.6% (P < 0.001) reduction in mortality rates, respectively, compared to untreated patients. In multivariate Cox proportional hazard models controlling for baseline demographics, clinical characteristics, and comorbidities, SVR was independently associated with reduced risk of death compared to No SVR (hazard ratio, 0.44; 95% confidence interval, 0.32-0.59; P < 0.001) and compared to untreated patients (hazard ratio, 0.32; 95% confidence interval, 0.29-0.36; P < 0.001).

CONCLUSION

Successfully treating hepatitis C virus with DAAs in patients without clinically apparent advanced liver disease translates into a significant mortality benefit. (Hepatology 2018).

Increasing success and evolving barriers in the hepatitis C cascade of care during the direct acting antiviral era

Barriers remain in the hepatitis C virus (HCV) cascade of care (CoC), limiting the overall impact of direct acting antivirals. This study examines movement between the stages of the HCV CoC and identifies reasons why patients and specific patient populations fail to advance through care in a real world population. We performed a single-center, ambispective cohort study of patients receiving care in an outpatient infectious diseases clinic between October 2015 and September 2016. Patients were followed from treatment referral through sustained virologic response. Univariate and multivariate analyses were performed to identify factors related to completion of each step of the CoC. Of 187 patients meeting inclusion criteria, 120 (64%) completed an evaluation for HCV treatment, 119 (64%) were prescribed treatment, 114 (61%) were approved for treatment, 113 (60%) initiated treatment, 107 (57%) completed treatment, and 100 (53%) achieved a sustained virologic response. In univariate and multivariate analyses, patients with Medicaid insurance were less likely to complete an evaluation and were less likely to be approved for treatment. Treatment completion and SVR rates are much improved from historical CoC reports. However, linkage to care following referral continues to be a formidable challenge for the HCV CoC in the DAA era. Ongoing efforts should focus on linkage to care to capitalize on DAA treatment advances and improving access for patients with Medicaid insurance.

HCV Integrated Care: A Randomized Trial to Increase Treatment Initiation and SVR with Direct Acting Antivirals

BACKGROUND AND AIMS

Psychiatric or substance use disorders are barriers to successful HCV antiviral treatment. In a randomized, controlled trial (RCT), the effects of HCV Integrated Care (IC) for increasing treatment rates and sustained viral response (SVR) were studied with direct acting antivirals (DAA).

METHODS

In 2012-13, VA patients, whose screening was positive for depression, PTSD, or substance use (N = 79), were randomized to IC or Usual Care (UC). IC consisted of brief psychological interventions and case management. The primary endpoint was SVR among patients followed for an average of 16.6 months.

RESULTS

42% of the study participants were previously homeless and 79% had HCV genotype 1. Twice as many IC participants (45%) initiated treatment compared with UC participants (23%) (χ² = 4.59, p = 0.032). Among those treated, SVR rates did not significantly differ (IC: 12/18 = 67%; UC: 5/9 = 55%; p = 0.23). Among all randomized participants, IC participants trended toward better SVR rates (30.0% versus 12.8% in UC; p = 0.07).

CONCLUSIONS

Although first-generation DAAs are no longer used, this smaller RCT helps confirm the results of a larger multisite RCT showing that Integrated Care results in higher treatment initiation and SVR rates among HCV-infected persons with comorbid psychological disorders. Integrated mental health services can facilitate treatment among the most challenging HCV patients, many of whom have not been successfully treated. This trial is registered with ClinicalTrials.gov number NCT00722423.