Dose Escalation Study of Intravenous Baclofen in Healthy Adult Volunteers

NCT ID: NCT01931319

Last Updated: 2019-05-07

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE1
• Total Enrollment: 39 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2014-01-31
• Study Completion Date: 2014-06-30

Brief Summary

The objective of this study is to determine safety and characterize pharmacokinetics of higher doses of intravenous baclofen in healthy subjects.

Thirty-six healthy adults received a single dose of PO baclofen (10mg, 15mg or 20mg) and a 10-minute infusion of IV baclofen (7.5mg, 11.5mg or 15mg respectively) with a minimum 48-hour wash out period. Twelve subjects also received a 60-minute infusion of 15mg IV baclofen following an additional 48-hour wash out period.

The pharmacokinetic and tolerability information gained from this study will support the development of further studies to assess the use of IV baclofen to prevent or treat baclofen withdrawal syndrome.

Detailed Description

This randomized, open-label, dose escalation, crossover study was conducted at a contract clinical research facility. Three single doses were evaluated using three cohorts (N=12 per cohort). Study doses were as follows: cohort 1 - 7.5mg IV and 10mg PO, cohort 2 - 11.5mg IV and 15mg PO, and cohort 3 - 15mg IV and 20mg PO. The IV baclofen doses for this trial were based on a 75% bioavailability observed in a previous low dose study.16 The oral formulation of the study drug used in this trial was 10mg baclofen tablet (Teva Pharmaceutical Industries Ltd.) and is commercially available. The intravenous formulation was 2mg/mL solution manufactured by Aptuit LLC. for this study. IV infusions were administered over 10 minutes. In addition, cohort 3 received 15mg over a 60-minute infusion. There was a minimum 48-hour washout period between doses. Initially, 3 subjects received study drug at a given dose, after assessing the safety and tolerance of baclofen the additional 9 subjects received study drug.

Conditions

Safety and Pharmacokinetics of Intravenous Baclofen

Study Design

• Allocation Method: NA
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

Intravenous Baclofen

Three single doses were evaluated using three cohorts (N=12 per cohort). Subjects received single doses of baclofen: 7.5, 11.5 or 15mg 10-minute intravenous infusion administered over 10 minutes by an infusion pump and 10, 15, or 20mg taken orally with a 48-hour washout phase between oral and intravenous arms of the study. Initially, 3 subjects received study drug at a given dose, after assessing the safety and tolerance of baclofen the additional 9 subjects received study drug.

Group Type: EXPERIMENTAL

Intravenous baclofen

Intervention Type: DRUG

Interventions

Intravenous baclofen

Intervention Type: DRUG

Eligibility Criteria

Inclusion Criteria

1. Males and females between the ages of 18-65.

2. Subjects are capable of giving informed consent.

3. Female subjects must be post-menopausal for at least 1 year, or surgically incapable of bearing children, or practicing at least one or more of the following methods of contraception for three months prior to, and during the study: hormonal, intrauterine device (IUD), or barrier method in combination with a spermicide.

4. Subject should be medication free, other than hormonal birth control, for 48 hours before through 24 hours after study drug administration. If the need for medication is identified during this time period, it will be discussed with and approved by the PI.

Exclusion Criteria

1. Women who are pregnant.

2. Women who are breastfeeding.

3. Subject has a history of intolerance to IV administration of medication.

4. Subject has a known hypersensitivity to baclofen.

5. Subject has a significant history of cardiac, neurologic, psychiatric, oncologic, endocrine, metabolic, renal or hepatic disease

6. Subject has taken or used any investigational drug or device in the 30 days prior to screening.

7. Subject has taken either prescribed or over the counter medication for 48 hours prior to baclofen administration on either of the study days, other than hormonal birth control.

8. Subject reveals clinically significant abnormalities on screening laboratory tests.

9. Subject is a non-English speaker, such that ability to ascertain neurological status would require an interpreter.

10. Sleep deprivation (for example. working the night shift the evening prior to the study).

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 65 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Paralyzed Veterans of America Research Foundation

UNKNOWN

Sponsor Role: collaborator

University of Minnesota

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Robert L Kriel, MD

Role: PRINCIPAL_INVESTIGATOR

University of Minnesota

James C Cloyd, PharmD

Role: PRINCIPAL_INVESTIGATOR

University of Minnesota

Linda E Krach, MD

Role: PRINCIPAL_INVESTIGATOR

University of Minnesota

Locations

University of Minnesota

Minneapolis, Minnesota, United States

Countries

United States

Other Identifiers

Baclofen_Dose escalation

Identifier Type: -

Identifier Source: org_study_id