Iontophoretic Application of Terbinafine Gel to the Large Toe Nail

Summary

Terbinafine is recognized as one of the most effective drugs for the treatment of toe nail fungus (onychomycosis). This trial will be the first test of a new device to improve the delivery of terbinafine directly to the toe nail. The device uses a low level of electric current, iontophoresis, to "push" the terbinafine into the nail.

The study will involve a single application of terbinafine, in a gel form, with the iontophoretic device. The treatment will be applied to the surface of both large toenails of healthy subjects. Subjects will be asked to report any sensations in the nail or surrounding skin experienced during or after treatment. Samples from the edge of the treated toe nail will be taken at 2-4 week intervals to measure how much terbinafine was delivered to the nails, and blood samples will be taken for the first 24 hours after treatment to determine how much, if any, terbinafine was absorbed into the subjects's body. Observations will also be made of the treated toes to look for any irritation of the surrounding skin due to the treatment.

Conditions

• Onychomycosis

Interventions

OTHER

Electrokinetic Transungual System (ETS) - Terbinafine Gel

Iontophoresis in conjunction with a terbinafine gel Drug Dose: ETS drug cartridge loaded with approximately 20 mg - 35 mg of terbinafine in the gel formulation, with the load depending on the size of the toenail to be treated. Two different drug applicators to be tested on each subject Single treatment on each toenail; one treatment with one drug applicator design, the second treatment with the alternative drug applicator design Iontophoretic Dose: 3 mA-min as 0.3 mA for 10 min

OTHER

ETS-Terbinafine Gel

Iontophoresis in conjunction with a terbinafine gel Drug Dose: ETS drug cartridge loaded with approximately 20 mg - 35 mg of terbinafine in the gel formulation, with the load depending on the size of the toenail to be treated. Two different drug applicators to be tested on each subject Single treatment on each toenail; one treatment with one drug applicator design, the second treatment with the alternative drug applicator design Iontophoretic Dose: 6 mA-min as 0.5 mA for 12 min

OTHER

ETS-Terbinafine Gel

Iontophoresis in conjunction with a terbinafine gel Drug Dose: ETS drug cartridge loaded with approximately 20 mg - 35 mg of terbinafine in the gel formulation, with the load depending on the size of the toenail to be treated. Two different drug applicators to be tested on each subject Single treatment on each toenail; one treatment with one drug applicator design, the second treatment with the alternative drug applicator design Iontophoretic Dose: 6 mA-min as 0.3 mA for 20 min

OTHER

ETS-Terbinafine Gel

Iontophoresis in conjunction with a terbinafine gel Drug Dose: ETS drug cartridge loaded with approximately 20 mg - 35 mg of terbinafine in the gel formulation, with the load depending on the size of the toenail to be treated. Two different drug applicators to be tested on each subject Single treatment on each toenail; one treatment with one drug applicator design, the second treatment with the alternative drug applicator design Iontophoretic Dose: 10 mA-min as 0.5 mA for 20 min

OTHER

ETS-Terbinafine Gel

Iontophoresis in conjunction with a terbinafine gel Drug Dose: ETS drug cartridge loaded with approximately 20 mg - 35 mg of terbinafine in the gel formulation, with the load depending on the size of the toenail to be treated. Two different drug applicators to be tested on each subject Single treatment on each toenail; one treatment with one drug applicator design, the second treatment with the alternative drug applicator design Iontophoretic Dose: 15 mA-min as 0.5 mA for 30 min

Sponsors & Collaborators

• Transport Pharmaceuticals

  lead INDUSTRY

Principal Investigators

• Craig Sprenger, MD · Cetero Research, San Antonio

• Eric M Morrel, PhD · Transport Pharmaceuticals, Inc.

• Philip M Friden, PhD · Transport Pharmaceuticals, Inc.

Study Design

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

NONE

Model

PARALLEL

Eligibility

Min Age

18 Years

Max Age

75 Years

Sex

ALL

Healthy Volunteers

Yes

Timeline & Regulatory

Start

2008-10-31

Primary Completion

2009-01-31

Completion

2009-03-31

Countries

• United States

Study Locations