Antiviral Pharmacology and Adherence in Drug Users
| Status: | Recruiting |
|---|---|
| Conditions: | HIV / AIDS, HIV / AIDS, HIV / AIDS, Hepatitis |
| Therapuetic Areas: | Immunology / Infectious Diseases |
| Healthy: | No |
| Age Range: | 18 - 70 |
| Updated: | 12/29/2018 |
| Start Date: | November 2015 |
| End Date: | March 2021 |
| Contact: | Ryan T Huntley, B.S. |
| Email: | ryan.huntley@ucdenver.edu |
| Phone: | 303-724-5564 |
Approximately one half of all Americans living with Hepatitis C virus (HCV) are drug users,
yet they are the least likely to receive HCV treatment. Drug users are presumed non-adherent
and therefore denied potentially life-saving therapy. This assumption can only be confirmed
or dispelled through prospective pharmacologic and adherence studies in this population. Such
studies would be greatly enhanced by an objective, quantitative measure of adherence which
does not currently exist in the HCV field. Through the work proposed in this application,
sixty HIV/HCV co-infected drug users will be treated with direct acting antiviral agents
(DAA) and randomized to receive directly observed DAA therapy (DOT) vs. no directly observed
therapy (no-DOT). Patients randomized to no-DOT will have wirelessly observed therapy (WOT)
which involves use of a portable medication dispenser that sends a signal to a server with
the date and time when the dispenser is opened. In Aim 1, DAA concentrations will be compared
in those randomized to DOT vs. no-DOT. DAA pharmacokinetics will also be defined accounting
for clinical factors like degree of hepatic impairment and use of concomitant recreational
and antiretroviral drugs. The goal is to quantify adherence in this population and the effect
of variable adherence on drug concentrations. In Aim 2, DAA concentrations (plasma, cellular,
hair) will be linked with adherence patterns identified using WOT and DOT. The goal is to
identify a drug concentration biomarker that predicts adherence in this population. In Aim 3,
the relationship between DAA adherence (as measured by WOT and DOT and drug concentrations)
and rate of cure will be established. The goal is to define the degree of adherence needed
for HCV cure.
yet they are the least likely to receive HCV treatment. Drug users are presumed non-adherent
and therefore denied potentially life-saving therapy. This assumption can only be confirmed
or dispelled through prospective pharmacologic and adherence studies in this population. Such
studies would be greatly enhanced by an objective, quantitative measure of adherence which
does not currently exist in the HCV field. Through the work proposed in this application,
sixty HIV/HCV co-infected drug users will be treated with direct acting antiviral agents
(DAA) and randomized to receive directly observed DAA therapy (DOT) vs. no directly observed
therapy (no-DOT). Patients randomized to no-DOT will have wirelessly observed therapy (WOT)
which involves use of a portable medication dispenser that sends a signal to a server with
the date and time when the dispenser is opened. In Aim 1, DAA concentrations will be compared
in those randomized to DOT vs. no-DOT. DAA pharmacokinetics will also be defined accounting
for clinical factors like degree of hepatic impairment and use of concomitant recreational
and antiretroviral drugs. The goal is to quantify adherence in this population and the effect
of variable adherence on drug concentrations. In Aim 2, DAA concentrations (plasma, cellular,
hair) will be linked with adherence patterns identified using WOT and DOT. The goal is to
identify a drug concentration biomarker that predicts adherence in this population. In Aim 3,
the relationship between DAA adherence (as measured by WOT and DOT and drug concentrations)
and rate of cure will be established. The goal is to define the degree of adherence needed
for HCV cure.
Inclusion Criteria:
- Ability to give informed consent
- HIV-infected men and women
- Chronic HCV infection as documented by quantifiable HCV RNA
- HCV genotype 1, 4, 5, 6
- 18-70 years of age
- Willingness and ability to comply with study procedures, including DOT, WOT, and
biweekly clinic visits
- Considered an active drug user by HCV provider and self-reported drug use within the
past month
Exclusion Criteria:
- Glomerular filtration rate < 30 mL/min/1.73 m2
- Receipt of prior HCV treatment and radiographic, histologic, or clinical evidence of
cirrhosis
- Decompensated liver disease (i.e., ascites, history of esophageal variceal bleeding,
hepatic encephalopathy)
- Medications not recommended per the SOF/LDV prescribing information (e.g., tipranavir
and other P-gp inducers, tenofovir disoproxil fumarate plus cobicistat, rosuvastatin,
amiodarone)
- Any medical condition that in the opinion of the investigators will make it
challenging to adhere to the study protocol, such as unstable heart disease or cancer
- Chronic Hepatitis B virus Infection
- For females, active pregnancy or any intent to become pregnant
- For both sexes, an unwillingness to use contraception during the study period
- On parole or impending sentencing
We found this trial at
1
site
13001 E 17th Pl
Aurora, Colorado 80045
Aurora, Colorado 80045
(303) 724-5000
Phone: 303-724-5564
University of Colorado Anschutz Medical Campus Located in the Denver metro area near the Rocky...
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