Bioequivalence Study Comparing Rifampicin In A Fixed-Dose Combination (Rifampicin+Isoniazid, Myrin© 2) And The Reference Drug (Rifampicin, Rimactane®)

June 21, 2012 updated by: Pfizer

An Open Label, Single Dose, Randomized, Two-Way Cross-Over Bioequivalence Study Comparing Rifampicin In A Fixed-Dose Combination Rifampicin + Isoniazid (Myrin© 2, Pfizer Inc) Tablet With The Reference Drug (Rimactane®, Novartis Sandoz) Capsule In Healthy Filipino Male Subjects

This study is done to demonstrate bioequivalence of rifampicin component in Myrin© 2 Fixed-Dose Combination Tablet (each contains 75 mg isoniazid and 150 mg rifampicin, Pfizer Inc) with equivalent dose of the reference Rimactane® capsule (each contains 300 mg rifampicin, Novartis Sandoz) in healthy Filipino male subjects. This study also aims to determine the safety and tolerability of Myrin© 2 tablets and Rimactane® capsules in these subjects.

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.

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.
21

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 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Philippines
      • Dasmariñas City, Philippines, 4114
        • Pfizer Investigational Site

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

18 years to 55 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Male

Description

Inclusion Criteria:

  • Healthy male subjects between the ages of 18 and 55 years, inclusive.
  • Body Mass Index (BMI) of 17.5 to 30.5 kg/m2; and a total body weight >50 kg (110 lbs).
  • An informed consent document signed and dated by the subject.
  • Subjects willing and able to comply with scheduled visits, treatment plan, laboratory tests, and other study procedures.

Exclusion Criteria:

  • Evidence or history of clinically significant hematological, renal, endocrine, pulmonary, gastrointestinal, cardiovascular, hepatic, psychiatric, neurologic, or allergic disease (including drug allergies, but excluding untreated, asymptomatic, seasonal allergies at time of dosing).
  • Any condition possibly affecting drug absorption (e.g., gastrectomy).
  • A positive urine drug screen.
  • History of regular alcohol consumption exceeding 21 drinks/week (1 drink = 5 ounces (150 ml) of wine or 12 ounces (360 ml) of beer or 1.5 ounces (45 ml) of hard liquor) within 6 months of screening.
  • Treatment with an investigational drug within 3 months (or as determined by the local requirement, whichever is longer) or 5 half-lives preceding the first dose of study medication.
  • 12-lead ECG demonstrating QTc >450 msec at screening. If QTc exceeds 450 msec, the ECG should be repeated two more times and the average of the three QTc values should be used to determine the subject's eligibility.
  • History of previous treatment for TB or is suspected of suffering from TB.
  • Use of prescription or nonprescription drugs and dietary supplements within 7 days or 5 half-lives (whichever is longer) prior to the first dose of study medication. Herbal medication, herbal supplements and hormone replacement therapy must be discontinued 28 days prior to the first dose of study medication. As an exception, acetaminophen / paracetamol may be used at doses of less than 1 g/day. Limited use of non-prescription medications that are not believed to affect subject safety or the overall results of the study may be permitted on a case-by-case basis following approval by the sponsor.
  • Blood donation of approximately 1 pint (500 ml) within 56 days prior to dosing.
  • A history of hypersensitivity to any of the study medications or related substances, or to any of the ingredients used in the study drug formulations.
  • Unwilling or unable to comply with the Lifestyle guidelines described in this protocol.
  • Other severe acute or chronic medical or psychiatric condition or laboratory abnormality that may increase the risk associated with study participation or investigational product administration or may interfere with the interpretation of study results and, in the judgment of the investigator, would make the subject inappropriate for entry into this study.
  • Recent history of diarrhea (2 weeks).
  • Recent use of oral (2 weeks) or IV (2-3 months) antibiotics to assure normal bowel flora at study start.

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: Randomized
  • Interventional Model: Crossover 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.
Active Comparator: A
Test
Drug: Myrin© 2 (Rifampicin + Isoniazid)
Two (2) fixed-dose combination tablets each containing Rifampicin 150 mg and Isoniazid 75 mg
Other Names:
  • Myrin© 2 (Pfizer Inc.)
Active Comparator: B
Reference
Drug: Rimactane® (Rifampicin)
One (1) capsule of Rifampicin 300 mg
Other Names:
  • Rimactane® (Novartis Sandoz)

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
Area Under the Curve From Time Zero to Last Quantifiable Concentration (AUC [0-t])
Time Frame: 0 (pre-dose), 1, 2, 3, 4, 6, 8 and 10 hours (hrs) post-dose
AUC (0-t)= Area under the plasma concentration versus time curve from time zero (pre-dose) to time of last quantifiable concentration (0-t)
0 (pre-dose), 1, 2, 3, 4, 6, 8 and 10 hours (hrs) post-dose
Maximum Observed Plasma Concentration (Cmax)
Time Frame: 0 (pre-dose), 1, 2, 3, 4, 6, 8 and 10 hrs post-dose
0 (pre-dose), 1, 2, 3, 4, 6, 8 and 10 hrs post-dose

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Time to Reach Maximum Observed Plasma Concentration (Tmax)
Time Frame: 0 (pre-dose), 1, 2, 3, 4, 6, 8 and 10 hrs post-dose
0 (pre-dose), 1, 2, 3, 4, 6, 8 and 10 hrs post-dose
Area Under the Curve From Time Zero to Extrapolated Infinite Time (AUC [0-∞])
Time Frame: 0 (pre-dose), 1, 2, 3, 4, 6, 8 and 10 hrs post-dose
AUC (0-∞)= Area under the plasma concentration versus time curve (AUC) from time zero (pre-dose) to extrapolated infinite time (0-∞). It is obtained from AUC (0-t) plus AUC (t-∞).
0 (pre-dose), 1, 2, 3, 4, 6, 8 and 10 hrs post-dose
Plasma Decay Half-life (t1/2)
Time Frame: 0 (pre-dose), 1, 2, 3, 4, 6, 8 and 10 hrs post-dose
Plasma decay half-life is the time measured for the plasma concentration to decrease by one half.
0 (pre-dose), 1, 2, 3, 4, 6, 8 and 10 hrs post-dose
Extrapolated Area Under the Curve (AUC Percent [%] Extrapolated)
Time Frame: 0 (pre-dose), 1, 2, 3, 4, 6, 8 and 10 hrs post-dose
AUC%extrapolated is the extrapolated area under the plasma concentration time profile following the last measured concentration. It is calculated as (AUC [0-∞] minus AUC[0-10])*100/ AUC (0-∞), where AUC (0-∞) = Area under the plasma concentration versus time curve from time zero (pre-dose) to extrapolated infinite time (0-∞) and AUC(0-10) = area under the plasma concentration time-curve from zero (pre-dose) to the last quantifiable concentration.
0 (pre-dose), 1, 2, 3, 4, 6, 8 and 10 hrs post-dose

Other Outcome Measures

Other Outcome Measures

For clinical trials, a planned measurement described in the protocol that is used to determine the effect of an intervention/treatment on participants. For observational studies, a measurement or observation that is used to describe patterns of diseases or traits, or associations with exposures, risk factors, or treatment. Types of outcome measures include primary outcome measure and secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Number of Participants With Abnormal Safety Laboratory Test Values
Time Frame: Screening and Follow-up (1 week post-baseline)
Participants were evaluated for following safety laboratory tests: Hematology, chemistry, urinalysis.
Screening and Follow-up (1 week post-baseline)
Clinically Significant Change From Baseline Supine Blood Pressure (BP)
Time Frame: Baseline (Day 0), Day 1 (Hour 10), and follow-up (1 week post-baseline)
Mean change: vital sign value at observation (Day 1 and follow-up) minus vital sign value at baseline.
Baseline (Day 0), Day 1 (Hour 10), and follow-up (1 week post-baseline)
Clinically Significant Change From Baseline Pulse Rate
Time Frame: Baseline (Day 0), Day 1 (Hour 10), and follow-up (1 week post-baseline)
Mean change: vital sign value at observation (Day 1 and follow-up) minus vital sign value at baseline.
Baseline (Day 0), Day 1 (Hour 10), and follow-up (1 week post-baseline)
Clinically Significant Change From Baseline Oral Temperature
Time Frame: Baseline (Day 0), Day 1 (Hour 10), and follow-up (1 week post-baseline)
Mean change: vital sign value at observation (Day 1 and follow-up) minus vital sign value at baseline.
Baseline (Day 0), Day 1 (Hour 10), and follow-up (1 week post-baseline)
Clinically Significant Change From Baseline Respiratory Rate
Time Frame: Baseline (Day 0), Day 1 (Hour 10), and follow-up (1 week post-baseline)
Mean change: vital sign value at observation (Day 1 and follow-up) minus vital sign value at baseline.
Baseline (Day 0), Day 1 (Hour 10), and follow-up (1 week post-baseline)
Number of Participants With Adverse Events (AEs)
Time Frame: Baseline (Day 0), Day 1 and Follow-up (1 week post-baseline)
Any untoward medical occurrence in a participant who received study treatment was considered an AE without regard to possibility of causal relationship.
Baseline (Day 0), Day 1 and Follow-up (1 week post-baseline)

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.
Pfizer

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.
April 1, 2011

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.
May 1, 2011

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.
May 1, 2011

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).
February 15, 2011

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.
March 7, 2011

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.
March 9, 2011

Study Record Updates

Last Update Posted (Estimate)

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.
July 30, 2012

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.
June 21, 2012

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.
June 1, 2012

More Information

Terms related to this study

Keywords

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.
  • B3801001

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.

Cookie Settings

We use cookies to ensure that we give you the best experience on our website. For more details carefully read our Privacy and Cookies Policy. ...>>>You can change your preferences or withdraw your consent at any time by deleting the cookies from your website or computer as described in the policy. Please accept it and choose your preferences by ticking the corresponding boxes in the "Manage Settings" section below. Please carefully read our Terms of Service before you proceed with using any part of this website.
«Manage Settings