A Bioequivalence Study Comparing A Fixed Dose Combination Formulation Of Myrin P Forte That Contains Rifampicin, Isoniazid, Ethambutol And Pyrazinamide Per Tablet To An Equivalent Dose Of Single Drug Reference Preparations Of Similar Combination Following Oral Administration In Healthy Adults

An Open Label, Single Dose, 2-Way Cross-Over Randomized Bioequivalence Study Comparing a Fixed Dose Combination Formulation, Myrin®-p Forte, (Contains 150 Mg Rifampicin, 75 Mg Isoniazid, 275 Mg Ethambutol and 400 Mg Pyrazinamide Per Tablet) to an Equivalent Dose of Single Drug Reference Preparations of Rifampicin, Isoniazid, Ethambutol and Pyrazinamide Following Oral Administration in Healthy Adults Under Fasting Conditions

This is a bioequivalence trial to evaluate the bioequivalence of Myrin P Forte against reference drug in healthy volunteers.

Study Overview

• Status: Completed
• Conditions: Healthy Volunteers
• Intervention / Treatment: Drug: Myrin P Forte; Drug: Single drug references

• Study Type: Interventional
• Enrollment (Actual): 36
• Phase: Phase 1

Contacts and Locations

Study Locations

• Singapore
  • Singapore, Singapore, 188770
    • Pfizer Investigational Site

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 21 years to 55 years (ADULT)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Healthy, male or female, 21 to 55 years of age, body weight no less than 55 kg, Body mass index (BMI) of 17.5 to 30.5 kg/m2. Healthy is defined as no clinically relevant abnormalities identified by a detailed medical history, full physical examination, including blood pressure and pulse rate measurement, 12-lead electrocardiogram (ECG) or clinical laboratory tests.
• An informed consent document signed and dated by the subject.
• Subjects who are willing and able to comply with all 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, allergic disease (including drug allergies, but excluding untreated, asymptomatic, seasonal allergies at the time of dosing), positive Hepatitis B surface antigen or Human Immunodeficiency Virus (HIV) serology results.
• pregnant or nursing female,
• alcohol, drug, smoke user,
• sensitive to any study medication or related component,
• History or active gout,
• History or active tuberculosis,
• Known optic neuritis or other ophthalmological conditions.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: BASIC_SCIENCE
• Allocation: RANDOMIZED
• Interventional Model: CROSSOVER
• Masking: NONE

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Active Comparator: 1.0; Test Myrin P Forte Contains 150mg Rifampicin, 75mg Isoniazid, 275mg Ethambutol, 400mg Pyrazinamide	Drug: Myrin P Forte; Tablet containing Rifampicin, Isoniazid, Ethambutol and Pyrazinamide, given once daily, single dose
Active Comparator: 2.0; Reference Single drug reference preparations contain Rifampicin, Isoniazid, Ethambutol, Pyrazinamide	Drug: Single drug references; containing Rifampicin, Isoniazid, Ethambutol and Pyrazinamide as single agents

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Area Under the Curve From Time Zero to Last Quantifiable Concentration (AUClast)	Area under the plasma concentration-time curve from time zero (pre-dose) to the time of last measured concentration (AUClast).	0 (pre-dose), 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16 and 24 hours (hrs) post-dose
Maximum Observed Plasma Concentration (Cmax)		0 (pre-dose), 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16 and 24 hrs post-dose
Dose Normalized Area Under the Curve From Time Zero to Last Quantifiable Concentration (AUClast[dn]) for Pyrazinamide	AUClast[dn] = Dose normalized area under the plasma concentration-time curve (AUC[dn]) from time zero (pre-dose) to the time of last measured concentration. It is obtained from AUClast divided by dose and then multiplied by 1500. The test and reference for pyrazinamide were given at different doses, so dose-normalized parameters were used for analysis for adjusting the dose effect on bioequivalence conclusion.	0 (pre-dose), 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16, 24, 36 and 48 hrs post-dose
Dose Normalized Maximum Observed Plasma Concentration (Cmax[dn]) for Pyrazinamide	It is obtained from Cmax divided by dose and then multiplied by 1500. The test and reference for pyrazinamide were given at different doses, so dose-normalized parameters were used for analysis for adjusting the dose effect on bioequivalence conclusion.	0 (pre-dose), 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16, 24, 36 and 48 hrs post-dose

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Area Under the Curve From Time Zero to Extrapolated Infinite Time (AUC[0-∞])	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), 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16 and 24 hrs post-dose
Dose Normalized Area Under the Curve From Time Zero to Extrapolated Infinite Time (AUC [0-∞][dn]) for Pyrazinamide	AUC [0-∞][dn] = Dose normalized area under the plasma concentration versus time curve (AUC[dn]) from time zero (pre-dose) to extrapolated infinite time (0-∞). It is obtained from AUC (0-∞) divided by dose and then multiplied by 1500. The test and reference for pyrazinamide were given at different doses, so dose-normalized parameters were used for analysis for adjusting the dose effect on bioequivalence conclusion.	0 (pre-dose), 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16, 24, 36 and 48 hrs post-dose
Plasma Decay Half-life (t1/2)	Plasma decay half-life is the time measured for the plasma concentration to decrease by one half.	0 (pre-dose), 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16 and 24 hrs post-dose for rifampicin, isoniazid and ethambutol and additional 36 and 48 hrs post-dose for pyrazinamide
Time to Reach Maximum Observed Plasma Concentration (Tmax)		0 (pre-dose), 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16 and 24 hrs post-dose for rifampicin, isoniazid and ethambutol and additional 36 and 48 hrs post-dose for pyrazinamide

Collaborators and Investigators

• Sponsor: Pfizer

Publications and helpful links

General Publications

• Wang HF, Wang R, O'Gorman M, Crownover P, Naqvi A, Jafri I. Bioequivalence of fixed-dose combination Myrin(R)-P Forte and reference drugs in loose combination. Int J Tuberc Lung Dis. 2013 Dec;17(12):1596-601. doi: 10.5588/ijtld.13.0190.

Study record dates

Study Major Dates

• Study Start: July 1, 2011
• Primary Completion (Actual): August 1, 2011
• Study Completion (Actual): August 1, 2011

Study Registration Dates

• First Submitted: July 13, 2011
• First Submitted That Met QC Criteria: July 20, 2011
• First Posted (Estimate): July 22, 2011

Study Record Updates

• Last Update Posted (Actual): April 5, 2017
• Last Update Submitted That Met QC Criteria: March 7, 2017
• Last Verified: March 1, 2017

More Information

Terms related to this study

• Keywords: Bioequivalence; Healthy Volunteers
• Other Study ID Numbers: B3801002