Phase I-II study for therapeutic efficacy of local recombinant human local insulin like growth factor 1 treatment via biodegradable gelatin hydrogels for acute sensorineural hearing loss
- Conditions
- acute sensorineural hearing loss
- Registration Number
- JPRN-UMIN000000936
- Lead Sponsor
- Kyoto University Hospital
- Brief Summary
In total, 25 patients received the test treatment at a median of 23 days (range, 15–32) after the onset of SSHL, between 2007 and 2009. At 12 weeks after the test treatment, 48% (95% CI, 28–69%; P = 0.086) of patients showed hearing improvement, and the proportion increased to 56% (95% CI, 35¬–76%; P = 0.015) at 24 weeks. No serious adverse events were observed.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Complete: follow-up complete
- Sex
- All
- Target Recruitment
- 25
Not provided
The exclusion criteria are as follows; (1) presenting active chronic otittis media, acute otittis media, otittis media with effusion or dysfunction of the auditory tube, (2) history of previous other treatments including systemic application of batroxobin, progtagrandin I, and hyper oxygen therapy, except for systemic steroid application, (3) presenting malignant tumors, (4) presenting severe liver dysfunction (AST>100, ALT >100), (5) presenting uncontrolled diabetes (HbA1c>10), (6) presenting pituitary or adrenal dysfunction, (7)severe systemic illness with an expected life expectancy, (8) pregnant or lactating women, (9) history of drug allergy, (10) treated with batroxobin or prostagrandin E1or I after the onset of hearing loss, (11) past history of alcohol or drug dependence within 1 year, (12) individuals who are diagnosed as inappropriate for the trial (ie: difficulty in a 24-week follow up).
Study & Design
- Study Type
- Interventional
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method The therapeutic effects are evaluated 12 weeks after the treatment, using pure tone audiometry. The criteria for hearing improvement, which was determined by the sudden deafness research committee of the Japanese Ministry of Health, Labour and Welfare in 1984, is used in this study. Complete recovery is defined as recovery of a hearing level within 20 dB at all five frequencies tested: 0.25, 0.5, 1.0, 2.0 and 4.0 kHz or recovery to the same level as the opposite side. Marked recovery is defined as more than 30 dB recovery in the mean hearing level at the five frequencies tested. Slight recovery is defined as recovery of 10-29 dB in the mean hearing level at the five frequencies tested. No response is defined as less recovery than 10 dB in the mean hearing level at the five frequencies tested.
- Secondary Outcome Measures
Name Time Method Key secondary outcomes are included the ratio of the emergence of adverse events, and the gain of hearing levels of the pure-tone average (0.25, 0.5, 1, 2, 4 kHz) 12 or 24 weeks after the treatment.