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Impact of Patient Support by the Medical Staff on Adherence to Therapy With PegIntron Plus Rebetol (Study P04413)

Impact of Patient Support From Medical Staff on the Adherence to Therapy With PegIntron Plus Rebetol

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT00704964
Acronym
@dhere
Enrollment
746
Registered
2008-06-25
Start date
2005-05-31
Completion date
2009-10-31
Last updated
2015-10-06

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

Conditions

Chronic Hepatitis C, Hepatitis C

Brief summary

The objective of this study is to assess the impact of participant care and support on treatment adherence. PegIntron pen and Rebetol will be administered to participants with Hepatitis C Virus (HCV) in accordance with approved labeling. Sites will be categorized as providing high vs low level of participant management based on information about the level of participant support and management captured on the site questionnaire. Data on each participant will be collected by a physician on an electronic participant case report form (CRF) and by the participant via a questionnaire. Treatment completion rates will be analyzed based on the high vs low level of participant management. The hypothesis is that Physicians investing more time and effort into participant management achieve higher treatment completion rates among their hepatitis C patients than physicians offering less participant management measures.

Interventions

BIOLOGICALPegIntron

PegIntron (peginterferon alfa-2b) pen administered at a dose and frequency in accordance with approved labeling in Germany

Rebetol (ribavirin) administered at a dose and frequency in accordance with approved labeling in Germany

Sponsors

Merck Sharp & Dohme LLC
Lead SponsorINDUSTRY

Study design

Observational model
CASE_ONLY
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Healthy volunteers
No

Inclusion criteria

* Participants with chronic hepatitis C. Those participating in patient assistance programs during therapy for hepatitis C.

Exclusion criteria

* Participants who have previously been treatment for hepatitis C (non-naïve) Other

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Biometrical Adherence to TherapyUp to 48 weeks for Hepatitis C Virus (HCV) genotype 1 or 4 participants and up to 24 weeks for HCV genotype 2 or 3Adherence was defined as participants receiving at least 80% of the planned PegIntron doses, or at least 80% of the planned Rebetol doses, or participants concluding at least 80% of the planned duration of their treatment, or all three conditions.
Number of Participants With Adherence to Therapy According to Physician ApproximationUp to 48 weeks for HCV genotype 1 or 4 participants and up to 24 weeks for HCV genotype 2 or 3Adherence was based on physiciant's clinical judgment.

Participant flow

Participants by arm

ArmCount
All Participants
Each site will be evaluated by a site questionnaire and assigned as either a high or low participant management site. Participants are not randomized to a group. However, treatment completion rates will be evaluated based on the high vs low participant management sites.
746
Total746

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyNot completed on time328

Baseline characteristics

CharacteristicAll Participants
Age, Continuous42.3 years
STANDARD_DEVIATION 11.44
Region of Enrollment
Germany
746 participants
Sex: Female, Male
Female
297 Participants
Sex: Female, Male
Male
449 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
— / —
other
Total, other adverse events
332 / 746
serious
Total, serious adverse events
27 / 746

Outcome results

Primary

Number of Participants With Adherence to Therapy According to Physician Approximation

Adherence was based on physiciant's clinical judgment.

Time frame: Up to 48 weeks for HCV genotype 1 or 4 participants and up to 24 weeks for HCV genotype 2 or 3

ArmMeasureGroupValue (NUMBER)
All ParticipantsNumber of Participants With Adherence to Therapy According to Physician ApproximationPegIntron615 Participants
All ParticipantsNumber of Participants With Adherence to Therapy According to Physician ApproximationRebetol604 Participants
Primary

Number of Participants With Biometrical Adherence to Therapy

Adherence was defined as participants receiving at least 80% of the planned PegIntron doses, or at least 80% of the planned Rebetol doses, or participants concluding at least 80% of the planned duration of their treatment, or all three conditions.

Time frame: Up to 48 weeks for Hepatitis C Virus (HCV) genotype 1 or 4 participants and up to 24 weeks for HCV genotype 2 or 3

ArmMeasureGroupValue (NUMBER)
All ParticipantsNumber of Participants With Biometrical Adherence to TherapyPegIntron + Rebetol406 Participants
All ParticipantsNumber of Participants With Biometrical Adherence to TherapyPegIntron415 Participants
All ParticipantsNumber of Participants With Biometrical Adherence to TherapyRebetol413 Participants

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