Administration of Oral Contraceptives at Different Times of the Follicular Phase of the Menstrual Cycle
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ClinicalTrials.gov Identifier: NCT00204438 |
Recruitment Status
:
Completed
First Posted
: September 20, 2005
Last Update Posted
: November 28, 2016
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Tracking Information | ||||
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First Submitted Date ICMJE | September 12, 2005 | |||
First Posted Date ICMJE | September 20, 2005 | |||
Last Update Posted Date | November 28, 2016 | |||
Study Start Date ICMJE | February 2002 | |||
Primary Completion Date | Not Provided | |||
Current Primary Outcome Measures ICMJE |
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Original Primary Outcome Measures ICMJE | Same as current | |||
Change History | Complete list of historical versions of study NCT00204438 on ClinicalTrials.gov Archive Site | |||
Current Secondary Outcome Measures ICMJE |
endometrial development | |||
Original Secondary Outcome Measures ICMJE | Same as current | |||
Current Other Outcome Measures ICMJE | Not Provided | |||
Original Other Outcome Measures ICMJE | Not Provided | |||
Descriptive Information | ||||
Brief Title ICMJE | Administration of Oral Contraceptives at Different Times of the Follicular Phase of the Menstrual Cycle | |||
Official Title ICMJE | Follicular Profiles After Administration of Oral Contraceptives at Different Times of the Follicular Phase of the Menstrual Cycle | |||
Brief Summary | We hypothesize that administration of OCs at varying follicular diameters will provide an appropriate model for the study of follicular atresia in women. Clinically, we hypothesize that the administration on OCs at different stages of the follicular phase will result in markedly different patterns of follicular development and/or atresia. | |||
Detailed Description | This study is a single-centre, randomized, open-label, double-controlled protocol to study the patterns of ovarian follicular growth and regression in women administered 0.15mg desogestrel /0.03mg ethinyl estradiol at different stages of the follicular phase of the menstrual cycle. We tracked the growth and regression of dominant follicles after administration of OC by means of highly sophisticated transvaginal ultrasonography and computerized image analysis techniques. The extremely high resolution ultrasonography of the ovarian follicles and the computer-assisted image analysis are unique to the Women's Health Imaging Research Laboratory (WHIRL) at the University of Saskatchewan. The synergyne (© R.A. Pierson) image analysis program was developed in the WHIRL and has the ability to allow assessment of the physiologic status of follicles as small as 6 to 10 mm. This unique protocol will allow us to characterize patterns of follicular growth and atresia under the suppressive effects of oral contraception, as well as the assessment of anovulatory follicles which may develop when OCs are administered at advanced stages of follicular development. The working hypothesis is that the administration of monophasic OCs prior to and during the time of physiologic selection of the dominant follicle will prevent the development of an ovulatory follicle (selection occurs when the dominant follicle reaches 10mm [Baerwald & Pierson, unpublished data]). In addition, we hypothesize that administration of OCs after selection of the dominant follicle, at more advanced stages of follicular development will result in 1 of 4 scenarios: 1.) Ovulation of the dominant follicle, 2.) Regression of the dominant follicle, 3). Formation of a Hemorrhagic Anovulatory follicle (HAF) or Luteinized Unruptured Follicle (LUF), or 4.) Formation of a follicular cyst. We hypothesize that atresia of dominant follicles and formation of anovulatory follicular structures will be associated with limited endometrial development. In testing these hypotheses, we will determine if OCs can safely and effectively be administered at any time during the follicular phase of the menstrual cycle. This study will evaluate the ovarian and uterine responses to administration of a combined dose of 0.15mg desogestrel /0.03mg ethinyl estradiol at 1 of 3 different stages of the follicular phase of the menstrual cycle. The objectives of the trial are to:
After screening measurements confirm subject eligibility, subjects will be randomized to initiate OC therapy at one of three different times of the menstrual cycle: Experimental Group #1: receives OCs when the dominant follicle reaches 10mm Experimental Group #2: receives OCs when the dominant follicle reaches 14mm Experimental Group #3: receives OCs when the dominant follicle reaches 18mm Fifteen women will be randomized to each of the 3 experimental groups in a stratified design scheme. Data collected from an ongoing OC trial (BMC# 2000-169) will serve as OC control data (n=15). Data collected from a previous study (BMC# 1988-80) will serve as natural cycle control data (n=60). |
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Study Type ICMJE | Interventional | |||
Study Phase | Not Applicable | |||
Study Design ICMJE | Allocation: Randomized Intervention Model: Parallel Assignment Masking: None (Open Label) Primary Purpose: Treatment |
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Condition ICMJE | Contraception | |||
Intervention ICMJE | Drug: 0.15mg desogestrel /0.03mg ethinyl estradiol | |||
Study Arms | Not Provided | |||
Publications * |
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* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline. |
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Recruitment Information | ||||
Recruitment Status ICMJE | Completed | |||
Enrollment ICMJE |
45 | |||
Original Enrollment ICMJE | Same as current | |||
Study Completion Date | December 2002 | |||
Primary Completion Date | Not Provided | |||
Eligibility Criteria ICMJE | Inclusion Criteria:
Exclusion Criteria:
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Sex/Gender |
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Ages | 18 Years to 35 Years (Adult) | |||
Accepts Healthy Volunteers | Yes | |||
Contacts ICMJE | Contact information is only displayed when the study is recruiting subjects | |||
Listed Location Countries ICMJE | Canada | |||
Removed Location Countries | ||||
Administrative Information | ||||
NCT Number ICMJE | NCT00204438 | |||
Other Study ID Numbers ICMJE | BMC 2001-249 CIHR MOP - 11489 |
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Has Data Monitoring Committee | Not Provided | |||
U.S. FDA-regulated Product | Not Provided | |||
IPD Sharing Statement | Not Provided | |||
Responsible Party | Roger Pierson, University of Saskatchewan | |||
Study Sponsor ICMJE | University of Saskatchewan | |||
Collaborators ICMJE | Canadian Institutes of Health Research (CIHR) | |||
Investigators ICMJE |
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PRS Account | University of Saskatchewan | |||
Verification Date | November 2016 | |||
ICMJE Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP |