Drug-Drug Interaction Study of Colchicine and Clarithromycin

This study has been completed.
Sponsor:
Information provided by:
Mutual Pharmaceutical Company, Inc.
ClinicalTrials.gov Identifier:
NCT00984061
First received: August 13, 2009
Last updated: October 5, 2009
Last verified: October 2009
  Purpose

Clarithromycin is a potent inhibitor of the activity of cytochrome P450 (CYP) 3A4 and P-glycoprotein (P-gp). CYP 3A4 plays a role in the metabolism of colchicine and P-gp is responsible for the efflux of colchicine across membranes. This study will evaluate the effect of clarithromycin-related inhibition of CYP 3A4 and P-gp on the pharmacokinetics of colchicine. It will also evaluate the safety and tolerability of concurrent administration of clarithromycin and a single dose of colchicine.


Condition Intervention Phase
Pharmacokinetics
Drug: colchicine
Drug: clarithromycin
Phase 1

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Endpoint Classification: Pharmacokinetics Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Basic Science
Official Title: A Pharmacokinetic Study to Evaluate the Effect of Clarithromycin on the Pharmacokinetic Profile of Colchicine in Healthy Adults

Resource links provided by NLM:


Further study details as provided by Mutual Pharmaceutical Company, Inc.:

Primary Outcome Measures:
  • Maximum Plasma Concentration (Cmax) [ Time Frame: serial pharmacokinetic blood samples collected immediately prior to dosing on Days 1 and 29, then at 0.5, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 8, 12, 16, 24, 36, 48, 72, and 96 hours after dose administration ] [ Designated as safety issue: No ]
  • Area Under the Concentration Versus Time Curve From Time 0 to Time t [AUC(0-t)] [ Time Frame: serial pharmacokinetic blood samples collected immediately prior to dosing on Days 1 and 29, then at 0.5, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 8, 12, 16, 24, 36, 48, 72, and 96 hours after dose administration ] [ Designated as safety issue: No ]
  • Area Under the Concentration Versus Time Curve From Time 0 Extrapolated to Infinity [AUC(0-∞)] [ Time Frame: serial pharmacokinetic blood samples collected immediately prior to dosing on Days 1 and 29, then at 0.5, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 8, 12, 16, 24, 36, 48, 72, and 96 hours after dose administration ] [ Designated as safety issue: No ]

Enrollment: 24
Study Start Date: November 2007
Study Completion Date: January 2008
Primary Completion Date: December 2007 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: colchicine alone
colchicine baseline pharmacokinetics
Drug: colchicine
0.6mg tablet administered at 9am on Day 1
Experimental: colchicine with clarithromycin
colchicine pharmacokinetics in presence of clarithromycin
Drug: clarithromycin
250 mg clarithromycin tablet taken on an outpatient basis twice daily at 8am and 8pm for 14 doses (starting with 8pm dose on Day 22 and concluding with 8am dose on Day 29)
Drug: colchicine
0.6 mg tablet administered at 9am on Day 29

Detailed Description:

Clarithromycin is a potent inhibitor of the activity of cytochrome P450 (CYP) 3A4 and P-glycoprotein (P-gp). CYP 3A4 plays a role in the metabolism of colchicine and P-gp is responsible for the efflux of colchicine across membranes. This open-label, one sequence, two-period, drug-drug interaction study will evaluate the effect of clarithromycin-related inhibition of CYP 3A4 and P-gp on colchicine pharmacokinetics in 24 healthy, non-smoking, non-obese (within +/- 15% of ideal body weight), male and female adult volunteers. The safety and tolerability of concurrent administration of clarithromycin and a single dose of colchicine will also be evaluated. During the first period, subjects will be confined to the study unit beginning the afternoon of the day prior to scheduled dosing (Day -1). On the morning of Day 1, after an overnight fast of at least 10 hours, subjects will be administered a single dose of colchicine 0.6 mg tablet with 240 ml of room temperature water. Blood will be drawn at times sufficient to characterize the baseline pharmacokinetics for this group. Following a 20 day washout period on Day 22, all subjects will return to the clinic to receive a supply of clarithromycin 250 mg tablets, which they will take on an outpatient basis twice daily (at 8 a.m. and 8 p.m.) without regard to meals for a total of 14 doses. Clinic staff will make telephone contact daily with subjects during this course to confirm compliance with the clarithromycin dosing regimen, and to monitor for adverse events and use of concomitant medication. On day 28 in the afternoon, subjects will again be confined to the study unit. On the morning of day 29, after an overnight fast of at least 10 hours all subjects will be administered a single dose of colchicine 0.6 mg and the final dose of clarithromycin with 240 ml water. Blood samples will be drawn at times sufficient to determine pharmacokinetic profiles of colchicine in the presence of clarithromycin at steady state. The pharmacokinetic profiles will be compared to determine the extent of drug-drug interaction.

  Eligibility

Ages Eligible for Study:   18 Years to 45 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • Healthy, non-smoking, adult volunteers, male and female, 18 to 45 years of age, weighing at least 55 kg and within 15% of ideal body weight, with hemoglobin >/=12 g/dL.
  • Female volunteers must be sexually abstinent for 14 days prior to the first dose and throughout the study or using acceptable birth control methods (prior to and during the study), including being postmenopausal or surgically sterile (or sexual activity restricted to a partner that is surgically sterile), hormonal contraception, an IUD, or barrier methods with spermicide. Additionally, they will be advised to remain sexually inactive or to keep the same birth control method for at least 14 days following the last dose of colchicine.

Exclusion Criteria:

  • Subjects who are pregnant or lactating
  • Test positive at screening for human immunodeficiency virus (HIV), hepatitis B surface antigen (HbsAg) or hepatitis C virus (HCV)
  • Have history or presence of significant cardiovascular, pulmonary, hepatic, renal, hematologic, gastrointestinal, endocrine, immunologic, dermatologic, neurologic, or psychiatric disease; have used any drugs or substances known to inhibit or induce CYP enzymes and/or P-gp within 30 days prior to the first dose and throughout the study
  • Recent (2-year) history of evidence of alcoholism or drug abuse
  • Subjects who donated 50-499 ml of blood within 30 days and more than 499 ml within 56 days prior to the first dose; subjects who have donated in excess of 500 ml of blood in 14 days, 1500 ml or blood in 180 days, or 2500 ml of blood in 1 year (through completion of the study)
  • Have participated in another clinical trial within 30 days prior to dosing
  • Known and documented drug allergies to colchicine or macrolide antibiotics.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00984061

Locations
United States, North Dakota
PRACS Institute, Ltd. - Cetero Research
Fargo, North Dakota, United States, 58104
Sponsors and Collaborators
Mutual Pharmaceutical Company, Inc.
Investigators
Study Chair: Matthew Davis, MD Mutual Pharmaceutical Company, Inc.
  More Information

No publications provided by Mutual Pharmaceutical Company, Inc.

Additional publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: Vice President Branded Products and Medical Affairs, Mutual Pharmaceutical Company, Inc.
ClinicalTrials.gov Identifier: NCT00984061     History of Changes
Other Study ID Numbers: MPC-004-07-1006
Study First Received: August 13, 2009
Results First Received: August 13, 2009
Last Updated: October 5, 2009
Health Authority: United States: Food and Drug Administration

Keywords provided by Mutual Pharmaceutical Company, Inc.:
healthy
pharmacokinetics
drug-drug interaction

Additional relevant MeSH terms:
Clarithromycin
Colchicine
Anti-Bacterial Agents
Anti-Infective Agents
Therapeutic Uses
Pharmacologic Actions
Protein Synthesis Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Gout Suppressants
Antirheumatic Agents
Tubulin Modulators
Antimitotic Agents
Mitosis Modulators
Antineoplastic Agents

ClinicalTrials.gov processed this record on September 16, 2014