- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00003599
Vitamin E in Preventing the Side Effects of Isotretinoin in Former and Current Smokers Who Are Receiving Isotretinoin to Prevent Lung Cancer
A Randomized Study of the Effect of Alpha-tocopherol (AT) on 13-cis-retinoic Acid (13-cRA) Toxicity in a Preliminary Chemoprevention Trial in Former and Current Smokers
RATIONALE: Chemoprevention therapy is the use of certain drugs to try to prevent the development or recurrence of cancer. The use of isotretinoin may be an effective way to prevent lung cancer. Vitamin E may prevent the side effects of isotretinoin therapy.
PURPOSE: Randomized clinical trial to study the effectiveness of vitamin E in preventing the side effects of isotretinoin in former and current smokers who are receiving isotretinoin to prevent lung cancer.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
OBJECTIVES: I. Determine whether the addition of alpha-tocopherol (AT; vitamin E) to isotretinoin decreases the incidence of Grade II and higher toxicity of isotretinoin when administered to former and current smokers. II. Determine the compliance rate of isotretinoin of smoker and former smokers with or without AT over a six month period. III. Determine the feasibility of recruiting former and current smokers with or without AT over a six month period. IV. Determine the effect of isotretinoin administration on serum retinol and retinol-binding protein levels in these patients.
OUTLINE: This is randomized, placebo controlled study. Patients are stratified by smoking status (current smoker vs former smoker) and age (less than 50 vs 50 and over). Patients are randomized to be take alpha-tocopherol (AT) orally and isotretinoin orally daily (arm I) or isotretinoin orally plus AT placebo orally daily (arm II). Treatment in each arm continues for 6 months. Patients are followed at 1, 3, 6, and 7 months from start of treatment.
PROJECTED ACCRUAL: There will be 300 patients (150 per arm) accrued into this study over an estimated 9 months.
Study Type
Phase
- Phase 3
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
DISEASE CHARACTERISTICS: Current smokers with 20+ packs per year history of smoking OR Former smokers who discontinued smoking 1 year prior to registration (less than 5 cigarettes in the prior year) and had a 20+ packs per year history prior to discontinuing smoking
PATIENT CHARACTERISTICS: Age: 18 and over Performance status: Not specified Life expectancy: Not specified Hematopoietic: WBC greater than 3,000/mm3 Platelet count greater than 100,000/mm3 Hepatic: Bilirubin less than 1.5 mg/dL SGOT less than 40 IU/mL OR SGPT less than IU/mL Renal: Not specified Other: Fasting triglycerides less than 320 mg/dL No prior malignancy in the past 5 years except nonmelanoma skin cancer or noninvasive cervical cancer No history of malabsorption syndrome Not pregnant Effective contraception required of all fertile persons
PRIOR CONCURRENT THERAPY: Biologic therapy: Not specified Chemotherapy: No prior isotretinoin Endocrine therapy: Not specified Radiotherapy: Not specified Surgery: Not specified Other: No prior warfarin or its derivatives At least 3 months since megadose vitamin A (greater than 25,000 IU/day) or beta-carotene greater than 30 mg/day or alpha-tocopherol at least 400 IU daily No concurrent megadose vitamin A (greater than 25,000 IU/day), beta-carotene greater than 30 mg/day, alpha-tocopherol at least 400 IU daily, or other daily supplements and tonics
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: Randomized
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Arm I
Alpha-tocopherol (AT) orally and isotretinoin orally daily (arm I)
|
Orally daily
Other Names:
Orally daily
Other Names:
|
Experimental: Arm II
Isotretinoin orally plus AT placebo orally daily (arm II).
|
Orally daily
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Effect of Alpha-tocopherol (AT) on 13-cis-retinoic Acid (13-cRA) Toxicity
Time Frame: 6 Months
|
6 Months
|
Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Study Chair: Rodger J. Winn, MD, M.D. Anderson Cancer Center
Publications and helpful links
Helpful Links
Study record dates
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Respiratory Tract Diseases
- Neoplasms
- Lung Diseases
- Neoplasms by Site
- Respiratory Tract Neoplasms
- Thoracic Neoplasms
- Lung Neoplasms
- Physiological Effects of Drugs
- Molecular Mechanisms of Pharmacological Action
- Protective Agents
- Dermatologic Agents
- Micronutrients
- Vitamins
- Antioxidants
- Vitamin E
- Tocopherols
- alpha-Tocopherol
- Isotretinoin
Other Study ID Numbers
- DM97-078
- P30CA016672 (U.S. NIH Grant/Contract)
- MDA-DM-97078 (Other Identifier: UT MD Anderson Cancer Center)
- NCI-P98-0132
- CDR0000066672 (Registry Identifier: NCI PDQ)
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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