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Clinical Trials List

Protocol NumberMK5172-017

2015-03-01 - 2019-06-30

Phase II/III

Terminated7

Study ended1

ICD-10B18.2

Chronic viral hepatitis C

ICD-10B18

Chronic viral hepatitis

ICD-9070.51

Hepatitis C without mention of hepatic coma, acute or unspecified

A Long-Term Follow-up Study to Evaluate the Durability of Virologic Response and/or Viral Resistance Patterns of Subjects With Chronic Hepatitis C Who Have Been Previously Treated with MK-5172 in a Prior Clinical Trial

  • Trial Applicant

    Merck Sharp & Dohme (I.A.) LLC

  • Sponsor

    Merck Sharp & Dohme Corp.

  • Trial scale

    Multi-Regional Multi-Center

  • Update

    2025/08/20

Investigators and Locations

Principal Investigator Jia-Horng Kao Division of General Internal Medicine

Co-Principal Investigator

The Actual Total Number of Participants Enrolled

0 Terminated

Principal Investigator Sheng-Shun Yang Division of General Internal Medicine

Co-Principal Investigator

The Actual Total Number of Participants Enrolled

0 Terminated

Principal Investigator Wan-Long Chuang Digestive System Department

Co-Principal Investigator

The Actual Total Number of Participants Enrolled

0 Terminated

Principal Investigator 胡琮輝 Digestive System Department

Co-Principal Investigator

The Actual Total Number of Participants Enrolled

0 Terminated

Principal Investigator Chi-Jen Chu Digestive System Department

Co-Principal Investigator

The Actual Total Number of Participants Enrolled

13 Terminated

Audit

None

Principal Investigator Pin-Nan Cheng Digestive System Department

Co-Principal Investigator

The Actual Total Number of Participants Enrolled

0 Terminated

Audit

None

Principal Investigator Cheng-Yuan Peng 未分科

Co-Principal Investigator

Audit

None

Principal Investigator I-Shyan Sheen Digestive System Department

Co-Principal Investigator

The Actual Total Number of Participants Enrolled

13 Terminated

Audit

None

Principal Investigator Wan-Long Chuang 未分科

Co-Principal Investigator

Audit

None

Principal Investigator Cheng-Yuan Peng Digestive System Department

Co-Principal Investigator

The Actual Total Number of Participants Enrolled

36 Study ended

Condition/Disease

Chronic Hepatitis C

Objectives

Primary In HCV-infected subjects who have previously been treated with MK-5172 and received at least one dose: 1. Objective: To evaluate the durability of SVR in subjects who remained HCV RNA <25 IU/mL throughout the follow-up period of the treatment protocol and did not start any new HCV therapy between the end of the previous protocol and entry in this study. 2. Objective: To evaluate the presence of antiviral resistance to MK-5172 and determine if there is a reversion to a wild-type pattern within the 3 or 5 year timeframe if subjects were from PN 052 or PN 059) of this long-term follow-up study. 3. Objective: To evaluate the long term safety of MK-5172.

Test Drug

MK-5172A

Active Ingredient

MK-5172, MK-8742

Dosage Form

tablet

Dosage

100mg MK-5172+50mg MK-8742

Endpoints

Efficacy Endpoints
A primary efficacy endpoint is the durability of long-term SVR which will be evaluated
based upon the time to viral relapse. Viral relapse is defined as any subject who has
HCV RNA quantifiable and was previously TND at end of treatment and TND or TD(u)
during the follow-up period of the previous trial. Relapse would be indicated so long as
this was the same genotype of the virus seen in the parent protocol (eg. not a new
infection or re-infection (see Section 2.5). Time to relapse is defined as the time from
last dose of study therapy taken in previous trial until the date where HCV RNA is ≥25
IU/mL. The percentage of subjects who remain HCV RNA <25 IU/mL during the course
of this study will also be evaluated.
In subjects with HCV RNA ≥1000 IU/mL at entry or during the study period, HCV
sequence analysis will be performed to evaluate the presence of RAVs and the
persistence of RAVs over time.
Safety Endpoints
Safety and signs of disease progression are assessed for all subjects by physical
examination, drug-related serious adverse events, events of clinical interest, any AEs
related to protocol-specified procedures (blood draw), and laboratory tests.

Inclution Criteria

1. Study subjects who previously participated in an MK-5172 protocol and received at
least one dose of MK-5172.
2. Subject must enroll (Visit 1) within one year of the treatment portion of their previous
MK-5172 protocol except in the circumstance where the previous protocol has a
follow-up period that is ≥1 year.
If a patient in a treatment protocol received extended follow-up (≥1 year) in the
original protocol, they may enroll in this study at the final visit of the previous
protocol.
3. Subject must be ≥ 18 years of age and willing to give written informed consent.
4. Subjects, who have consented for the trial, may also provide consent for Future
Biomedical Research. However, the subject may participate in the main trial without
participating in Future Biomedical Research.

Exclusion Criteria

1. In the opinion of the investigator, if a subject is mentally or legally incapacitated at
entry, the subject may be excluded.

The Estimated Number of Participants

  • Taiwan

    141 participants

  • Global

    3250 participants