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DAA-based Therapy for Recently Acquired Hepatitis C II (DAA = Directly Acting Antiviral) (DARE-C II)

Primary Purpose

Hepatitis C

Status
Completed
Phase
Phase 4
Locations
International
Study Type
Interventional
Intervention
Sofosbuvir and ribavirin
Sponsored by
Kirby Institute
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for Hepatitis C focused on measuring Hepatitis C, Acute/early chronic, Recently acquired, Directly acting antiviral therapy, Sofosbuvir, Ribavirin

Eligibility Criteria

18 Years - undefined (Adult, Older Adult)All SexesDoes not accept healthy volunteers

Inclusion Criteria:

  • Provision of written informed consent
  • Male and female patients aged 18 years and above
  • Willing to use two effective methods of contraception during the treatment period and 24 weeks post.
  • HBsAg negative
  • Detectable HCV RNA at screening (>10,000 IU/ml), and in the opinion of the investigator is unlikely to demonstrate spontaneous viral clearance
  • Compensated liver disease (Child-Pugh A)
  • Negative pregnancy test at screening and 24 hours prior to first dose of study drugs
  • Medically stable on the basis of physical examination, medical history and vital signs
  • Adequate English to provide reliable responses to the study questionnaires
  • Recent hepatitis C infection, as defined by: A) i) First anti-HCV Ab or HCV RNA positive within the previous 6 months and ii) Documented anti-HCV Ab negative within the 24 months prior to anti-HCV antibody positive result, OR B) i) First anti-HCV Ab or HCV RNA positive within the previous 6 months and ii) acute clinical hepatitis (jaundice or ALT> 10 X ULN) within the previous 12 months prior to first positive HCV antibody or HCV RNA, with no other cause of acute hepatitis identifiable

If co-infection with HIV is documented, the subject must meet the following criteria:

  • Antiretroviral (ARV) untreated for >8 weeks preceding screening visit with CD4 T cell count >500 cells/mm3 OR
  • On a stable ARV regimen for >8 weeks prior to screening visit, with CD4 T cell count >200 cells/mm3 and an undetectable plasma HIV RNA level.

Exclusion Criteria:

  • Standard exclusions to RBV therapy
  • Pregnancy/lactation or male subjects whose female partners are pregnant
  • Subject has a history of decompensated liver disease: history of ascites, hepatic encephalopathy, or bleeding oesophageal varices, and/or any of the following screening laboratory results: a.INR of ≥1.5; Serum albumin <3.3 g/dL; Serum total bilirubin >1.8 times upper limit of normal, unless isolated in subjects with Gilbert's syndrome.

Sites / Locations

  • St Vincent's Hospital
  • Royal Adelaide Hospital
  • Alfred Hospital
  • Royal Melbourne Hospital
  • Auckland City Hospital

Arms of the Study

Arm 1

Arm Type

Experimental

Arm Label

Sofosbuvir and ribavirin

Arm Description

Sofosbuvir tablet 400 mg daily Ribavirin tablet weight based dosing (1000mg <75 kg, 1200mg >/= 75kg) daily Treatment will be for 6 weeks in all participants.

Outcomes

Primary Outcome Measures

SVR 12
Proportion of patients with undetectable HCV RNA by TaqMan 12 weeks after therapy completion (SVR 12 - Week 18)

Secondary Outcome Measures

SVR 24
Proportion of patients with undetectable HCV RNA by TaqMan 24 weeks after therapy completion (SVR 24 - Week 30)

Full Information

First Posted
June 3, 2014
Last Updated
September 19, 2018
Sponsor
Kirby Institute
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1. Study Identification

Unique Protocol Identification Number
NCT02156570
Brief Title
DAA-based Therapy for Recently Acquired Hepatitis C II (DAA = Directly Acting Antiviral)
Acronym
DARE-C II
Official Title
An Interferon Sparing Strategy of Sofosbuvir Plus Ribavirin for the Treatment of Recently Acquired Hepatitis C Infection
Study Type
Interventional

2. Study Status

Record Verification Date
September 2018
Overall Recruitment Status
Completed
Study Start Date
October 2014 (undefined)
Primary Completion Date
August 2017 (Actual)
Study Completion Date
December 2017 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
Kirby Institute

4. Oversight

Data Monitoring Committee
Yes

5. Study Description

Brief Summary
The purpose of the study is to examine whether patients who have acute or early chronic hepatitis C virus (HCV) infection can be treated effectively and safely with an interferon-sparing regimen that combines a new direct acting antiviral drug (sofosbuvir) with one of the standard treatments for chronic hepatitis C (ribavirin). In particular, this study will investigate whether treatment of acute or early chronic HCV can be shortened. The study will assess efficacy by looking at the proportion of people who clear the virus (have no virus detectable in their blood) at the end of treatment, and 1, 3 and 6 months after treatment. The hypothesis is that short course (6 weeks) dual therapy using sofosbuvir and RBV will result in successful virological eradication in the majority (≥80%) of subjects treated for recently acquired HCV.
Detailed Description
To evaluate the efficacy, safety and acceptability of an interferon-sparing strategy with sofosbuvir and ribavirin for the treatment of recently acquired HCV infection. An open label single arm multicentre study Treatment of participants: Sofosbuvir 400mg daily with weight based ribavirin (1000mg <75 kg, 1200mg >/= 75kg) Duration of treatment will be 6 weeks for all subjects followed by 52 weeks of observational follow-up Total study duration = 58 weeks Primary endpoint: SVR 12

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Hepatitis C
Keywords
Hepatitis C, Acute/early chronic, Recently acquired, Directly acting antiviral therapy, Sofosbuvir, Ribavirin

7. Study Design

Primary Purpose
Treatment
Study Phase
Phase 4
Interventional Study Model
Single Group Assignment
Masking
None (Open Label)
Allocation
N/A
Enrollment
20 (Anticipated)

8. Arms, Groups, and Interventions

Arm Title
Sofosbuvir and ribavirin
Arm Type
Experimental
Arm Description
Sofosbuvir tablet 400 mg daily Ribavirin tablet weight based dosing (1000mg <75 kg, 1200mg >/= 75kg) daily Treatment will be for 6 weeks in all participants.
Intervention Type
Drug
Intervention Name(s)
Sofosbuvir and ribavirin
Other Intervention Name(s)
Sovaldi, Copegus
Intervention Description
Sofosbuvir 400mg daily plus weight-based dosing ribavirin (1000mg <75kg, 1200mg >/= 75 kg) Treatment will be for 6 weeks in all participants.
Primary Outcome Measure Information:
Title
SVR 12
Description
Proportion of patients with undetectable HCV RNA by TaqMan 12 weeks after therapy completion (SVR 12 - Week 18)
Time Frame
12 weeks post treatment
Secondary Outcome Measure Information:
Title
SVR 24
Description
Proportion of patients with undetectable HCV RNA by TaqMan 24 weeks after therapy completion (SVR 24 - Week 30)
Time Frame
24 weeks post treatment
Other Pre-specified Outcome Measures:
Title
End of treatment response
Description
Proportion of patients with undetectable HCV RNA at end of therapy (ETR - week 6)
Time Frame
End of treatment week 6
Title
SVR 4
Description
Proportion of patients with undetectable HCV RNA by TaqMan 4 weeks after therapy completion (SVR 4 - Week 10)
Time Frame
4 weeks post treatment
Title
Follow up 1 year
Description
Proportion of patients with undetectable HCV RNA at end of study follow-up (FU1 - Week 58)
Time Frame
1 year post treatment
Title
Undetectable HCV RNA
Description
Proportion of patients with undetectable HCV RNA at weeks 1, 2, 3 and 4
Time Frame
Week 1, 2, 3 and 4 of treatment
Title
Indicators of toxicity (ALT, HB, Neutrophils, Platelets)
Description
To evaluate indicators of toxicity (ALT, HB, Neutrophils, Platelets) during therapy
Time Frame
Baseline until week 4 of treatment
Title
Plasma ribavirin levels and haemoglobin
Description
To correlate plasma ribavirin levels with treatment outcome and changes in haemoglobin during therapy
Time Frame
Baseline to week 4 of treatment
Title
Incidence of reinfection
Description
Incidence of reinfection after documented SVR
Time Frame
End of treatment until follow up 1 year

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria: Provision of written informed consent Male and female patients aged 18 years and above Willing to use two effective methods of contraception during the treatment period and 24 weeks post. HBsAg negative Detectable HCV RNA at screening (>10,000 IU/ml), and in the opinion of the investigator is unlikely to demonstrate spontaneous viral clearance Compensated liver disease (Child-Pugh A) Negative pregnancy test at screening and 24 hours prior to first dose of study drugs Medically stable on the basis of physical examination, medical history and vital signs Adequate English to provide reliable responses to the study questionnaires Recent hepatitis C infection, as defined by: A) i) First anti-HCV Ab or HCV RNA positive within the previous 6 months and ii) Documented anti-HCV Ab negative within the 24 months prior to anti-HCV antibody positive result, OR B) i) First anti-HCV Ab or HCV RNA positive within the previous 6 months and ii) acute clinical hepatitis (jaundice or ALT> 10 X ULN) within the previous 12 months prior to first positive HCV antibody or HCV RNA, with no other cause of acute hepatitis identifiable If co-infection with HIV is documented, the subject must meet the following criteria: Antiretroviral (ARV) untreated for >8 weeks preceding screening visit with CD4 T cell count >500 cells/mm3 OR On a stable ARV regimen for >8 weeks prior to screening visit, with CD4 T cell count >200 cells/mm3 and an undetectable plasma HIV RNA level. Exclusion Criteria: Standard exclusions to RBV therapy Pregnancy/lactation or male subjects whose female partners are pregnant Subject has a history of decompensated liver disease: history of ascites, hepatic encephalopathy, or bleeding oesophageal varices, and/or any of the following screening laboratory results: a.INR of ≥1.5; Serum albumin <3.3 g/dL; Serum total bilirubin >1.8 times upper limit of normal, unless isolated in subjects with Gilbert's syndrome.
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Gail Matthews, MbChB FRACP
Organizational Affiliation
Kirby Institute
Official's Role
Principal Investigator
Facility Information:
Facility Name
St Vincent's Hospital
City
Sydney
State/Province
New South Wales
ZIP/Postal Code
2010
Country
Australia
Facility Name
Royal Adelaide Hospital
City
Adelaide
State/Province
South Australia
ZIP/Postal Code
5000
Country
Australia
Facility Name
Alfred Hospital
City
Melbourne
State/Province
Victoria
ZIP/Postal Code
3004
Country
Australia
Facility Name
Royal Melbourne Hospital
City
Melbourne
State/Province
Victoria
ZIP/Postal Code
3050
Country
Australia
Facility Name
Auckland City Hospital
City
Auckland
State/Province
Grafton
ZIP/Postal Code
1023
Country
New Zealand

12. IPD Sharing Statement

Links:
URL
http://www.kirby.unsw.edu.au
Description
UNSW Kirby Institute for infection and immunity in society Homepage

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DAA-based Therapy for Recently Acquired Hepatitis C II (DAA = Directly Acting Antiviral)

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