Integrated Care Increases Treatment and Improves Outcomes of Patients With Chronic Hepatitis C Virus Infection and Psychiatric Illness or Substance Abuse

Abstract

Background & aims: Patients with hepatitis C virus (HCV) infection with psychiatric disorders and/or substance abuse face significant barriers to antiviral treatment. New strategies are needed to improve treatment rates and outcomes. We investigated whether an integrated care (IC) protocol, which includes multidisciplinary care coordination and patient case management, could increase the proportion of patients with chronic HCV infection who receive antiviral treatment (a combination of interferon-based and direct-acting antiviral agents) and achieve a sustained virologic response (SVR).

Methods: We performed a prospective randomized trial at 3 medical centers in the United States. Participants (n = 363 patients attending HCV clinics) had been screened and tested positive for depression, post-traumatic stress disorder, and/or substance use; they were assigned randomly to groups that received IC or usual care (controls) from March 2009 through February 2011. A midlevel mental health practitioner was placed at each HCV clinic to provide IC with brief mental health interventions and case management, according to formal protocol. The primary end point was SVR.

Results: Of the study participants, 63% were non-white, 51% were homeless in the past 5 years, 64% had psychiatric illness, 65% were substance abusers within 1 year before enrollment, 57% were at risk for post-traumatic stress disorder, 71% had active depression, 80% were infected with HCV genotype 1, and 23% had advanced fibrosis. Over a mean follow-up period of 28 months, a greater proportion of patients in the IC group began receiving antiviral therapy (31.9% vs 18.8% for controls; P = .005) and achieved a SVR (15.9% vs 7.7% of controls; odds ratio, 2.26; 95% confidence interval, 1.15-4.44; P = .018). There were no differences in serious adverse events between groups.

Conclusions: Integrated care increases the proportion of patients with HCV infection and psychiatric illness and/or substance abuse who begin antiviral therapy and achieve SVRs, without serious adverse events. ClinicalTrials.gov # NCT00722423.

Keywords: Care Integration; Hepatitis C; PTSD; Substance Use Disorders.