Evaluate the Efficacy of Oxybutynin Chloride in Patients With Primary Hyperhidrosis

Study Overview
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Brief Summary
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Treatment of primary hyperhidrosis through a comparative study between oxybutynin hydrochloride and placebo. Hydrochloride may decrease the symptoms of hyperhidrosis improving the subject's quality of life.

Detailed Description
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Clinical Trial phase III, randomized, national, prospective, double-blind, multicenter, comparative between oxybutynin hydrochloride and placebo, to be held in participants aged over 18 years to evaluate the therapeutic efficacy and safety of oxybutynin chloride to systemic treatment of primary hyperhidrosis. Primary hyperhidrosis is a relatively common disorder, affecting approximately 3% of the population. It affects both sexes similarly and in all age groups, varying only the starting age of symptoms according to the most affected part of the body: childhood - plantar and palmar hyperhidrosis adolescence - axillary hyperhidrosis adult - craniofacial hyperhidrosis There is a family history associated with between 12.5% and 56.5% of the participants, according to epidemiological studies. Initially the subjects will be evaluated on the inclusion and exclusion criteria through screening and safety tests such as blood tests , ECG and tonometry, to confirm enrollment. When included will be randomized into the corresponding study arm to start study treatment. During the period of the study it will evaluate the efficacy parameters of the drug. The treatment for each subject will be about 8 weeks. The inclusion period is foreseen for 6 months and may be extended or decreased according to the pace of inclusion. The data are summarized according to the study group (per dose and per visit, if applicable) through appropriate descriptive statistics to the variable type. Frequency and percentage will be used for the variables. The Adverse Events (AE) will be analyzed based on questioning by the investigators in relation to the AE experienced by the subjects. The orientation will be to the subject to note the symptom, the date and time that the event appeared.

Official Title
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Clinical Trial Phase III, Prospective, Randomized, Double-blind, Multicenter, National, Comparative Between Oxybutynin Chloride With Placebo to Evaluate the Efficacy and Safety for Systemic Treatment of Primary Hyperhidrosis.

Conditions
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Hyperhidrosis

Intervention / Treatment
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* Drug: Oxybutynin
* Drug: Placebo


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Understanding, agreement and consent form signed; Literate; Confirmed diagnosis for primary hyperhidrosis; Screening tests at normal standards; Absence of pregnancy by Beta-human chorionic gonadotropin test; Exclusion Criteria: Secondary Hyperhidrosis; Myasthenia gravis; Lactation; Hypersensitivity to oxybutynin; Use more than 500mg of caffeine; Alcoholism; Use of illicit drug; Changes in ECG (echocardiogram) or tonometry; Any clinical condition that the investigator considers clinically significant.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Oxybutynin Chloride<br>Tablet Dose 5,0 or 10 mg/ day | Drug: Oxybutynin<br>* The doses will increase due to the absence/ lack of therapeutic response of the previous dose assessed during the study visits.<br>|
| Placebo Comparator: Placebo<br>- Tablet | Drug: Placebo<br>* The quantity of tablets will increase due to the absence/ lack of therapeutic response.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Oxybutynin Chloride efficacy | Evaluation of the therapeutic efficacy by Oxybutynin Hydrochloride in the treatment of primary hyperhidrosis. | 6 weeks | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Perception of improvement | Evaluation of perception of improvement from the subject by completing a questionaire | During treatment until week 8 | 
| Evaluate therapeutic safety | Evaluate therapeutic safety of the Oxybutynin Chloride by assessing possible adverse event | During treatment until week 8 | 
| Quality of life | Evaluate the difference in subject's quality of life between the treatment groups | During treatment until week 8 | 
| Time of subject response | Evaluation of average time the subject reaches response | End of 8 weeks | 
| Duration of response | Evaluate the duration of response | End of 8 weeks | 
| Evaluation between quality of life and groups | Evaluate the difference of quality of life in the end of treatment between the groups | End of 8 weeks | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Hyperhidrosis, Oxybutynin