- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02036879
Gender Disparity and Hormones in Cystic Fibrosis
The objective of this study is to investigate the impact of hormones on lung disease in Cystic Fibrosis (CF) patients. Due to improved therapies, CF patients are living longer and healthier lives than they did 20 years ago. However, females have been shown to have a survival disadvantage. The median life expectancy is 33 in women and 37 in men with CF. The hypothesis is that estrogen and/or progesterone negatively impact lung health in CF. Therefore, understanding the impact of sex hormones (including the use of birth control pills) on the disease process is increasingly important. The purpose of this study is to determine if lung function, respiratory symptoms, or various markers of lung health change during different phases of the natural ovulatory cycle in order to understand if estrogen or progesterone hormones are impacting the disease relative to fluctuations in men with stable testosterone levels. The research objectives of this project are to:
- Determine if lung function, respiratory symptoms, or various markers of lung health change during different hormonal phases of the ovulatory cycle in women.
- Determine if men change lung function, respiratory symptoms, or various markers of lung health over time.
- Determine if oral contraceptive pills in women stabilize fluctuations in symptoms and improve lung health.
Study Overview
Status
Conditions
Intervention / Treatment
Study Type
Enrollment (Actual)
Phase
- Early Phase 1
Contacts and Locations
Study Locations
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Texas
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Dallas, Texas, United States, 75390
- UT Southwestern Medical Center
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Dallas, Texas, United States, 75207
- Children's Medical Center
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Male and female cystic fibrosis patients
- Must be greater than or equal to 18 years of age.
- All subjects must understand and sign the informed consent.
- Subjects must have the ability to read and write in English.
- Female subjects starting this study must be willing to use a double barrier method of birth control (such as condom or diaphragm) used with a spermicide (a substance that kills sperm), while participating in the study.
Exclusion Criteria for Main Study:
- Women who are pregnant, breast feeding, or who have had an oophorectomy.
- Women who have received a hormone contraceptive injection (such as Depo Provera) within the last 3 months.
Exclusion Criteria for Substudy:
- Men
- Women who have a history of breast cancer, abnormal vaginal bleeding, liver disease, coronary artery disease, cerebrovascular disease, uncontrolled hypertension, diabetes mellitus with vascular disease, or have had a stroke, heart attack, or blood clot within the past year, due to a possible reaction to Loestrin.
- Women who currently smoke cigarettes, due to the increased risk of serious cardiovascular events with Loestrin use.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Basic Science
- Allocation: Non-Randomized
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
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No Intervention: Main study
The main study is an observational study. All women will be followed for one menstrual cycle (or approximately one month) observationally off of any hormone supplementation. They will have 3 study visits corresponding to their menstrual cycle phases (menses, ovulation, and luteal). Women participating in the main study may participate in the optional interventional sub-study. Men participating in this study will be followed for 1 month observationally. They will have 3 study visits that correlate with the female arm of this study. |
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Experimental: Loestrin Optional Substudy
Women participating in the main study may participate in the optional sub-study.
Following a negative urine pregnancy test, women will be started on once daily oral Loestrin (1.5 mg norethindrone + 0.03 mg ethyl estradiol).
They will be followed for two months on this agent and have 2 additional study visits.
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This is an optional substudy that females participating in the main study can choose to participate in.
Loestrin, an oral contraceptive or birth control pill, will be prescribed and taken daily for approximately 2 months.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Change in percent predicted forced expiratory volume in 1 second (FEV1)
Time Frame: Through Visit 5, if applicable (or approximately 3 months)
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Through Visit 5, if applicable (or approximately 3 months)
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Collaborators and Investigators
Investigators
- Principal Investigator: Raksha Jain, MD, MSCI, UT Southwestern Medical Center
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
- Digestive System Diseases
- Pathologic Processes
- Respiratory Tract Diseases
- Lung Diseases
- Infant, Newborn, Diseases
- Genetic Diseases, Inborn
- Pancreatic Diseases
- Fibrosis
- Cystic Fibrosis
- Physiological Effects of Drugs
- Hormones
- Hormones, Hormone Substitutes, and Hormone Antagonists
- Estrogens
- Contraceptive Agents, Hormonal
- Contraceptive Agents
- Reproductive Control Agents
- Contraceptives, Oral, Combined
- Contraceptives, Oral
- Contraceptive Agents, Female
- Contraceptives, Oral, Synthetic
- Contraceptives, Oral, Hormonal
- Contraceptives, Oral, Sequential
- Estradiol
- Ethinyl Estradiol
- Norethindrone
- Norethindrone Acetate
- Norethindrone acetate, ethinyl estradiol, ferrous fumarate drug combination
Other Study ID Numbers
- STU 072013-079
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
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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