Fibroblast Growth Factor Regeneration of Tympanic Membrane Perforations

D. Bradley Welling, MD, PhD57 enrolled

Overview

A Phase II randomized trial will be initiated to evaluate closure of the perforated tympanic membrane as the primary measureable outcome. The goal is to determine the safety and efficacy of Fibroblast Growth Factor-2 (FGF-2) in the closure of chronic tympanic membrane perforations (TMP). If FGF-2 is topically applied for the treatment of chronic TMP in humans, it is hypothesized it will be safe, tolerable and effective for use as treatment for tympanic membrane perforation. A total of 60 subjects will be recruited.

A Phase II randomized trial will be initiated to evaluate efficacy as the primary measureable outcome. Eligible and consented patients will be randomized in a 3:1 ratio to the optimal biologic dose (OBD) of FGF-2 or placebo (sterile water). Application of the study treatment may occur at the initial Screening Visit (pending all eligibility requirements can be confirmed) or at Visit 1 and may be repeated at each follow up visit as needed for a maximum of three treatments per treatment arm. These follow up visits will occur three weeks (+/- 7 days) from the last treatment application. During these visits, the subject's tympanic membrane will be examined, photographed, and additional otologic tests will be performed. If the perforation is found to be closed during these visits, then the subject will report in 2 months (+/-7 days) for a final study visit. If the subject's TMP has not closed after the third and final application of their assigned treatment group, then the subject will be crossed over to the other treatment group. Again, the subject may be given up to three additional treatments in this new group. The follow up visits will follow the same schedule, occurring three weeks (+/- 7 days) from the last treatment. The same otologic procedures will be performed as in the previous visits. All subjects will report for a final study visit 2 months (+/- 7 days) after their last follow up visit when the perforation is determined to be closed or when the subject has completed the maximum number of study visits without perforation closure. The study will be completed for reporting purposes after all subjects have completed the 2 month (+/- 7 days) follow up final visit.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

TRIPLE

Enrollment

Conditions

Tympanic Membrane Perforation

Interventions

FGF-2DRUG

The FGF-2 method of use comprises a pledget of gelatin foam with human fibroblast growth factor-2 (FGF-2) added to the pledget just before topical application to the tympanic membrane, and the use of Tisseel, a fibrin glue used for applications in ear surgery.

PlaceboOTHER

Placebo comparator using a sterile saline solution.

Eligibility

Sex: ALLMin age: 18 Years

Medical Language ↔ Plain English

Inclusion Criteria: 1. Dry tympanic membrane perforation of greater than 3 months duration 2. If female, post-menopausal or sterile, or if she is of child-bearing potential, must have a negative beta-human chorionic gonadotropin (HCG) test and must be using an adequate form of birth control such as birth control pills, birth control implants, intrauterine devices (IUDs), diaphragms or condoms. Exclusion Criteria: The presence of any of the following excludes a subject from study enrollment: * Active otitis media or chronic otorrhea from the middle ear * Subjects receiving radiation therapy, corticosteroids, immunosuppressive agents or chemotherapy * Subjects who, at study entry, are taking systemic antibiotics * Subjects who are immunosuppressed * Subjects experiencing bacterial or viral infection or who may otherwise be febrile * Life expectancy of less than 1 year * Active alcohol or drug abuse within 6 months prior to study entry * Significant medical condition that could prevent full participation in the procedures required for the study (See body of protocol for full list of exclusions) * Known or suspected allergies to any components used in the study * Subjects who have cholesteatoma mass in the tympanic cavity * Subjects whose total perforation cannot be seen by an endoscope * Subjects with inadequately controlled diabetes mellitus (NGSP: HbA1c 6.9% or higher) * Subjects with a history of malignant ear canal tumors within 3 years of screening for eligibility

Locations (2)

Massachusetts Eye and Ear

Boston, Massachusetts, United States

Wilford Hall, Lackland Airforce Base

Lackland City, Texas, United States

Outcomes

Primary Outcomes

Number of Patients With Tympanic Membrane Closure Following Treatment

The efficacy of the treatment is determined by the number of patients whose tympanic membrane perforations closed after study treatments. Subjects from both treatment arms received up to three treatments before determining non-closure of the tympanic membrane.

Time frame: ~60 days

Secondary Outcomes

Measurement of Changes in Pure-tone Averages

measured by pre- and post-treatment audiograms.

Time frame: Baseline, 60 days

Measurement of Changes in Speech Discrimination Scores

Speech discrimination score is determined by having the patient listen to words through headphones and having the patient repeat the words back to the audiologist. A score of 100 percent (100%) is the best outcome, and 0 percent (0%) is the worst. Pre- and post- treatment tests are compared and analyzed.

Time frame: Baseline, 60 days

Number of Treatments Required for Closure of the Tympanic Membrane Perforation

Out of the patients who healed, some healed with 1 treatment, some with 2 treatments, and some with 3 treatments.

Time frame: 60 days

Number of Patients With Normal Mobility of the Eardrum as Assessed by Tympanometry

Tympanometry is an examination used to test the condition of the middle ear and the mobility of the eardrum. Any type of perforation, regardless of size, would cause the result of the tympanometry to be abnormal. We use this test to determine if the eardrum closed completely.

Time frame: 60 days

Data from ClinicalTrials.gov

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