Drug-Drug Interaction Study of Colchicine and Clarithromycin

NCT00984061 | Completed Phase 1 Results

• 1 other identifier: MPC-004-07-1006
• Study Type: interventional
• Target: 24
• Locations: 1 country
• Sites: 1

Brief Summary

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.

Conditions

Pharmacokinetics

Keywords

healthy; pharmacokinetics; drug-drug interaction

Outcome Measures

Primary Outcomes (3)

• Maximum Plasma Concentration (Cmax)

  The maximum or peak concentration that colchicine reaches in the plasma.

  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

• Area Under the Concentration Versus Time Curve From Time 0 to Time t [AUC(0-t)]

  The area under the colchicine plasma concentration versus time curve beginning from the first dose (time 0) to the last measurable colchicine concentration (time t), as calculated by the linear trapezoidal method.

  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

• Area Under the Concentration Versus Time Curve From Time 0 Extrapolated to Infinity [AUC(0-∞)]

  The area under the colchicine plasma concentration versus time curve from time 0 to infinity. AUC(0-∞) was calculated as the sum of AUC(0-t) plus the ratio of the last measurable colchicine plasma concentration to the elimination rate constant.

  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

Study Arms (2)

colchicine alone

EXPERIMENTAL

colchicine baseline pharmacokinetics

Drug: colchicine

colchicine with clarithromycin

EXPERIMENTAL

colchicine pharmacokinetics in presence of clarithromycin

Drug: clarithromycin; Drug: colchicine

Interventions

colchicine DRUG

0.6mg tablet administered at 9am on Day 1

colchicine alone

clarithromycin DRUG

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)

colchicine with clarithromycin

Eligibility Criteria

• Age: 18 Years - 45 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• 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.

You may not qualify if:

• 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.

Sponsors & Collaborators

• Mutual Pharmaceutical Company, Inc.: lead

Study Sites (1)

PRACS Institute, Ltd. - Cetero Research

Fargo, North Dakota, 58104, United States

Location

Related Publications (1)

• Terkeltaub RA, Furst DE, Digiacinto JL, Kook KA, Davis MW. Novel evidence-based colchicine dose-reduction algorithm to predict and prevent colchicine toxicity in the presence of cytochrome P450 3A4/P-glycoprotein inhibitors. Arthritis Rheum. 2011 Aug;63(8):2226-37. doi: 10.1002/art.30389.

  PMID: 21480191 DERIVED

MeSH Terms

Interventions

Colchicine; Clarithromycin

Intervention Hierarchy (Ancestors)

Alkaloids; Heterocyclic Compounds; Erythromycin; Macrolides; Polyketides; Lactones; Organic Chemicals

Results Point of Contact

• Title: Medical Director
• Organization: Mutual Pharmaceutical Company, Inc.

clinicaltrials@urlmutual.com

215-697-1743

Study Officials

• Matthew Davis, MD

  Mutual Pharmaceutical Company, Inc.

  STUDY CHAIR

Publication Agreements

• PI is Sponsor Employee: No
• Restriction Type: GT60
• Restrictive Agreement: Yes

Study Design

• Study Type: interventional
• Phase: phase 1
• Allocation: NON RANDOMIZED
• Masking: NONE
• Purpose: BASIC SCIENCE
• Intervention Model: SINGLE GROUP
• Sponsor Type: INDUSTRY

Study Record Dates

• First Submitted: August 13, 2009
• First Posted: September 24, 2009
• Study Start: November 1, 2007
• Primary Completion: December 1, 2007
• Study Completion: January 1, 2008
• Last Updated: October 15, 2009
• Results First Posted: September 24, 2009

Record last verified: 2009-10

Locations

US (1)