5 Year Long-term Follow up in Pediatric Participants Who Received PegIntron Plus Rebetol in P02538 Part I (P02538 Pt 2)

March 7, 2017 updated by: Merck Sharp & Dohme LLC

Assessment of the Safety, Efficacy, Tolerability and Pharmacokinetics of PEG-Intron® Plus REBETOL® in Pediatric Patients With Chronic Hepatitis C

Study P02538 Part 2 is a 5-year long term follow-up (LTFU) study in pediatric participants who were treated with at least one dose of peginterferon alfa-2b (PEG-IFN) and ribavirin (RBV) and who completed the follow-up in the P02538 Part 1 study (NCT00104052). No study drug therapy will be administered during the P02538 Part 2 study. Durability of virologic response will be assessed for participants who attained sustained virologic response (SVR) in Part I of this study by performing annual Hepatitis C Virus ribonucleic acid (HCV-RNA) testing. In addition, this study will characterize long-term safety in all participants who received PEG-IFN plus RBV treatment.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

During the Part 2 LTFU, participants will be evaluated at Years 1, 2, 3, 4, and 5. Each participant's first LTFU visit will be scheduled approximately 1 year after the post-treatment Follow-up Week 24 visit in Part 1 of this study (NCT00104052).

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
94

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 3

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

3 years to 17 years (Child)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Informed consent must be obtained from the participant or the participant's parent or legal guardian prior to any long-term follow-up study-related procedures. According to local laws and/or IRB/IEC requirements, participants may also need to provide written assent.
  • The participant must have received at least one dose of peginterferon alfa-2b and ribavirin in the Protocol No. P02538 study.
  • The participant must have completed the 24-week post-treatment follow-up in the P02538 Part 1 study. All participants whether sustained responders, relapsers, or nonresponders are eligible to participate.

Exclusion Criteria:

  • Concurrent participation in any other clinical study.
  • Retreatment with any antiviral or immunomodulatory drug for chronic hepatitis C after completion of, or discontinuation from, the treatment phase of the P02538 Part 1 study.
  • Any condition that in the opinion of the Investigator would make the participant unsuitable for enrollment.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Other: PEG-IFN + RBV: LTFU
Pediatric participants who completed treatment with peginterferon alfa-2b (PEG-IFN) plus ribavirin (RBV) in P02538 Part 1 of this study (NCT00104052) were enrolled in a 5-year Long Term Follow-Up (LTFU) during P02538 Part 2 (NCT00761735). No study treatment was administered in Part 2.
Biological: Peginterferon alfa-2b
In the previous treatment protocol (P02538 Part 1), peginterferon alfa-2b was administered at a dose of 60 μg/m^2 by subcutaneous injection weekly for up to 48 weeks. No treatment was administered on the current follow-up study (P02538 Part 2).
Other Names:
  • PEG-Intron®
Drug: Ribavirin
In the previous treatment protocol (P02538 Part 1), ribavirin was administered at a dose of 15 mg/kg/day orally in two divided doses for up to 48 weeks. No treatment was administered on the current follow-up study (P02538 Part 2).
Other Names:
  • REBETOL®

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Number of Participants Who Relapsed At End of LTFU Year 5
Time Frame: Part 2 LTFU Year 5
Relapse was defined as Hepatitis C Virus ribonucleic acid (HCV-RNA) that was above the lower limit of quantitation at Year 5 of the LTFU.
Part 2 LTFU Year 5
Mean Height Percentiles of Participants Over LTFU
Time Frame: Part 1 Pre-treatment Baseline, Part 2 LTFU Year 1, Part 2 LTFU Year 2, Part 2 LTFU Year 3, Part 2 LTFU Year 4, Part 2 LTFU Year 5, Last Available LTFU Visit (up to 5 years)
To determine long-term effects of the Part 1 treatment on height, changes in height during the Part 2 LTFU were evaluated using height percentiles based on 2000 Center For Disease Control growth charts for the general population.
Part 1 Pre-treatment Baseline, Part 2 LTFU Year 1, Part 2 LTFU Year 2, Part 2 LTFU Year 3, Part 2 LTFU Year 4, Part 2 LTFU Year 5, Last Available LTFU Visit (up to 5 years)
Mean Weight Percentiles of Participants Over LTFU
Time Frame: Part 1 Pre-treatment Baseline, Part 2 LTFU Year 1, Part 2 LTFU Year 2, Part 2 LTFU Year 3, Part 2 LTFU Year 4, Part 2 LTFU Year 5, Last Available LTFU Visit (up to 5 years)
To determine long-term effects of the Part 1 treatment on weight, changes in weight during the Part 2 LTFU were evaluated using weight percentiles based on 2000 Center For Disease Control growth charts for the general population.
Part 1 Pre-treatment Baseline, Part 2 LTFU Year 1, Part 2 LTFU Year 2, Part 2 LTFU Year 3, Part 2 LTFU Year 4, Part 2 LTFU Year 5, Last Available LTFU Visit (up to 5 years)
Mean Body Mass Index (BMI) Percentiles of Participants Over LTFU
Time Frame: Part 1 Pre-treatment Baseline, Part 2 LTFU Year 1, Part 2 LTFU Year 2, Part 2 LTFU Year 3, Part 2 LTFU Year 4, Part 2 LTFU Year 5, Last Available LTFU Visit (up to 5 years)
To determine long-term effects of the Part 1 treatment on BMI, changes in BMI during the Part 2 LTFU were evaluated using BMI percentiles based on 2000 Center For Disease Control growth charts for the general population.
Part 1 Pre-treatment Baseline, Part 2 LTFU Year 1, Part 2 LTFU Year 2, Part 2 LTFU Year 3, Part 2 LTFU Year 4, Part 2 LTFU Year 5, Last Available LTFU Visit (up to 5 years)
Mean Age at Attained Tanner Stages (Sexual Maturity) at End of LTFU (Last Observation) By Gender
Time Frame: Last assessment of the Part 2 LTFU (up to 5 years)
The Tanner Stage (TS) defines physical measurements of sexual development based on external primary and secondary sex characteristics. Female participants are evaluated for breast development and pubic hair distribution and male participants are evaluated for genital development and pubic hair distribution, based on a 5-stage ordinal scale ranging from TS 1 (prepubertal/preadolescent characteristics) to TS 5 (mature or adult characteristics). Mean ages for attaining each TS in the normal population have been previously established based on measuring correlating reproductive hormone levels, and are expressed in years as follows for females (F) and males (M): TS 1= 7.1 (F+M); TS 2= 10.5 (F), 12.1 (M); TS 3= 11.6 (F), 13.6 (M); TS 4=, 12.3 (F), 15.1 (M); TS 5= 14.5 (F), 18 (M). To assess sexual maturation at the end of the LTFU (last observation), females and males were staged and the mean age at each TS attained was reported.
Last assessment of the Part 2 LTFU (up to 5 years)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Merck Sharp & Dohme LLC

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
July 1, 2007

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
January 1, 2013

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
January 1, 2013

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
September 5, 2008

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 26, 2008

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
September 29, 2008

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
April 4, 2017

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 7, 2017

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
March 1, 2017

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • P02538: Part 2
  • 2004-000558-22 (EudraCT Number)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

http://www.merck.com/clinical-trials/pdf/Merck%20Procedure%20on%20Clinical%20Trial%20Data%20Access%20Final_Updated%20July_9_2014.pdf

http://engagezone.msd.com/ds_documentation.php

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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