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Switching Regimen in Treating Cirrhotic HCV GT1b Subjects

Efficacy and Safety of Switching From Pegylated Interferon/Ribavirin (PR) to Direct-acting Antiviral Agents (DAAs) for Chinese With CHC Genotype 1b Infection (SWITCH-1)

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02583685
Acronym
SWITCH-1
Enrollment
138
Registered
2015-10-22
Start date
2015-05-15
Completion date
2024-10-31
Last updated
2025-03-26

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Chronic Hepatitis C Infection

Brief summary

This is a prospective, randomized study to evaluate the efficacy and safety of switching treatment from Peg-interferon and Ribavirin to direct-acting antiviral agents in Chinese with CHC genotype 1b infection, who are interferon/ribavirin-intolerant.

Interventions

DRUGPR4 + LDV/SOF + ASV 4 wk

Pegylated interferon alfa-2a (PEG) 180 μg administered once weekly by subcutaneous injection; Ribavirin (RBV) administered as a tablet orally according to body weight (\< 75kg = 1000 mg and ≥ 75 kg = 1200 mg); Ledipasvir/sofosbuvir (LDV/SOF) 90 mg/400 mg fixed dose combination (FDC) tablet administered orally once daily; Asunaprevir (ASV) 200mg administered orally twice daily.

DRUGPR4 + LDV/SOF + SMV 4 wk

Pegylated interferon alfa-2a (PEG) 180 μg administered once weekly by subcutaneous injection; Ribavirin (RBV) administered as a tablet orally according to body weight (\< 75kg = 1000 mg and ≥ 75 kg = 1200 mg); Ledipasvir/sofosbuvir (LDV/SOF) 90 mg/400 mg fixed dose combination (FDC) tablet administered orally once daily; Simeprevir (SMV) 150 mg tablet orally once daily.

DRUGPR4 + LDV/SOF + ASV 6 wk

Pegylated interferon alfa-2a (PEG) 180 μg administered once weekly by subcutaneous injection; Ribavirin (RBV) administered as a tablet orally according to body weight (\< 75kg = 1000 mg and ≥ 75 kg = 1200 mg); Ledipasvir/sofosbuvir (LDV/SOF) 90 mg/400 mg fixed dose combination (FDC) tablet administered orally once daily; Asunaprevir (ASV) 200mg administered orally twice daily.

DRUGPR4 + LDV/SOF + SMV 6 wk

Pegylated interferon alfa-2a (PEG) 180 μg administered once weekly by subcutaneous injection; Ribavirin (RBV) administered as a tablet orally according to body weight (\< 75kg = 1000 mg and ≥ 75 kg = 1200 mg); Ledipasvir/sofosbuvir (LDV/SOF) 90 mg/400 mg fixed dose combination (FDC) tablet administered orally once daily; Simeprevir (SMV) 150 mg tablet orally once daily.

DRUGPR4 + LDV/SOF + ASV 8 wk

Pegylated interferon alfa-2a (PEG) 180 μg administered once weekly by subcutaneous injection; Ribavirin (RBV) administered as a tablet orally according to body weight (\< 75kg = 1000 mg and ≥ 75 kg = 1200 mg); Ledipasvir/sofosbuvir (LDV/SOF) 90 mg/400 mg fixed dose combination (FDC) tablet administered orally once daily; Asunaprevir (ASV) 200mg administered orally twice daily.

DRUGPR4 + LDV/SOF + SMV 8 wk

Pegylated interferon alfa-2a (PEG) 180 μg administered once weekly by subcutaneous injection; Ribavirin (RBV) administered as a tablet orally according to body weight (\< 75kg = 1000 mg and ≥ 75 kg = 1200 mg); Ledipasvir/sofosbuvir (LDV/SOF) 90 mg/400 mg fixed dose combination (FDC) tablet administered orally once daily; Simeprevir (SMV) 150 mg tablet orally once daily.

DRUGPR4 + LDV/SOF + ASV 12 wk

Pegylated interferon alfa-2a (PEG) 180 μg administered once weekly by subcutaneous injection; Ribavirin (RBV) administered as a tablet orally according to body weight (\< 75kg = 1000 mg and ≥ 75 kg = 1200 mg); Ledipasvir/sofosbuvir (LDV/SOF) 90 mg/400 mg fixed dose combination (FDC) tablet administered orally once daily; Asunaprevir (ASV) 200mg administered orally twice daily.

DRUGPR4 + LDV/SOF + SMV 12 wk

Pegylated interferon alfa-2a (PEG) 180 μg administered once weekly by subcutaneous injection; Ribavirin (RBV) administered as a tablet orally according to body weight (\< 75kg = 1000 mg and ≥ 75 kg = 1200 mg); Ledipasvir/sofosbuvir (LDV/SOF) 90 mg/400 mg fixed dose combination (FDC) tablet administered orally once daily; Simeprevir (SMV) 150 mg tablet orally once daily.

Sponsors

Beijing 302 Hospital
CollaboratorOTHER
Nanfang Hospital, Southern Medical University
CollaboratorOTHER
Humanity and Health Research Centre
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 70 Years
Healthy volunteers
No

Inclusion criteria

* Individuals with chronic HCV GT1b infection; * HCV RNA ≥ 10000 IU/mL at screening; * Received 4 weeks pegylated interferon plus ribavirin (PR4) therapy and are intolerant to PR4; * Cirrhosis determination; a liver biopsy may be required; * Use of highly effective contraception methods if female of childbearing potential or sexually active male;

Exclusion criteria

* Pregnant or nursing female or male with pregnant female partner; * HIV or HBV co-infection; * Hematologic or biochemical parameters at Screening outside the protocol- specified requirements; * Active or recent history (≤ 1 year) of drug or alcohol abuse; * History or current evidence of any condition, therapy, laboratory abnormality or other circumstance that might confound the results of the study, or interfere with the subject's participation for the full duration of the study, such that it is not in the best interest of the subject to participate.

Design outcomes

Primary

MeasureTime frameDescription
Proportion of participants with sustained virologic response 12 weeks (SVR12) after discontinuation of therapyPost treatment Week 12SVR12 is defined as HCV RNA \< lower limit of quantification (LLOQ) 12 weeks after last dose of study drug.
Proportion of participants with adverse events leading to permanent discontinuation of study drug(s)Baseline up to Week 24

Secondary

MeasureTime frameDescription
Proportion of participants with unquantifiable HCV viral load at specified time points during and after treatmentBaseline up to Week 24
Change in mental health evaluated with questionnairesUp to Posttreatment Week 24To evaluate the change in mental health during and after treatment with questionnaires
Change in health related quality of life evaluated with questionnairesUp to Posttreatment Week 24To evaluate the change in health-related quality of life during and after treatment with questionnaires
Treatment adherenceBaseline to Week 12To evaluate the proportion of patients adherent to therapy (both on-treatment adherence and treatment discontinuation)
Liver disease progressionUp to 10 yearsLiver disease progression is a composite endpoint measured by laboratory parameters (alanine aminotransferase (ALT), aspartate aminotransferase (AST), bilirubin, albumin, platelets, prothrombin time (PT) and α-fetoprotein) and observed or reported clinical signs and symptoms.

Countries

China

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026