Ignite Creation Date:
2025-12-24 @ 9:34 PM
Ignite Modification Date:
2026-01-04 @ 2:54 AM
Study NCT ID:
NCT00480532
Status:
COMPLETED
Last Update Posted:
2014-10-22
First Post:
2007-05-30
Is NOT Gene Therapy:
True
Has Adverse Events:
True
Brief Title:
A Study of Continuous Oral Contraceptives and Doxycycline
Sponsor:
Oregon Health and Science University
Organization:
Study Overview
Official Title:
A Study of Continuous Oral Contraceptives and Doxycycline
Status:
COMPLETED
Status Verified Date:
2014-10
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
The purpose of this study is to learn if the study drug, doxycycline, can decrease the amount of unplanned vaginal bleeding that women commonly experience when taking combined oral contraception (COC)- pills with estrogen and progestin - in a continuous fashion - no hormone-free week. The study drug, doxycycline, is an antibiotic used commonly for many conditions (i.e. acne, Chlamydia infections, pneumonia) and can be safely used on a daily basis. Doxycycline has been shown to decrease unplanned vaginal bleeding in progestin-only contraception but has not been studied in combined hormonal contraception.
Detailed Description:
We intend to conduct a prospective, randomized, placebo controlled, double blind study at Oregon Health and Science University. This study will be conducted over four 28-day cycles (112 days of active COC hormone). All women enrolled in the study will take the same daily low dose COC. This protocol will be divided into two studies, a bleeding study and an endometrial biopsy study, each with two treatment arms; typical dose doxycycline (Arm 1), and controlled release subantimicrobial dose doxycycline (CRSD)(Arm 2).
The first arm (Arm 1) of this study will constitute the typical dose doxycycline arm. In this arm, there will be two study groups. Group 1, the treatment group, will take doxycycline 100 mg orally twice a day for five days starting on the first day of bleeding if breakthrough bleeding occurs. The control group will take a placebo orally twice a day for five days starting on the first day of bleeding if breakthrough bleeding occurs. After three months, both groups will stop doxycycline (or placebo) and will continue on a COC alone for the remaining 28 days of the study.
The second arm (Arm 2) of the study will constitute the controlled release subantimicrobial dose doxycycline (CRSD doxycycline)arm. Subjects in this arm of the study will be divided into Group 3 and Group 4. Group 3 will take CRSD doxycycline (40mg) daily for three months. Group 4 will take a daily placebo. Similarly to the first arm of the trial, after three months, both groups will stop doxycycline (or placebo) and will continue in a COC alone for the remaining 28 days of the study.
This study also includes a endometrial biopsy sub-study: At the time of recruitment we will identify participants who are willing to undergo endometrial biopsy during the study period. These subjects will constitute a separate cohort who will enroll in the prospective, randomized, double blind, placebo controlled endometrial biopsy study.
The first arm (Arm 1) of this study will constitute the typical dose doxycycline arm. In this arm, there will be two study groups. Group 1, the treatment group, will take doxycycline 100 mg orally twice a day for five days starting on the first day of bleeding if breakthrough bleeding occurs. The control group will take a placebo orally twice a day for five days starting on the first day of bleeding if breakthrough bleeding occurs. After three months, both groups will stop doxycycline (or placebo) and will continue on a COC alone for the remaining 28 days of the study.
The second arm (Arm 2) of the study will constitute the controlled release subantimicrobial dose doxycycline (CRSD doxycycline)arm. Subjects in this arm of the study will be divided into Group 3 and Group 4. Group 3 will take CRSD doxycycline (40mg) daily for three months. Group 4 will take a daily placebo. Similarly to the first arm of the trial, after three months, both groups will stop doxycycline (or placebo) and will continue in a COC alone for the remaining 28 days of the study.
This study also includes a endometrial biopsy sub-study: At the time of recruitment we will identify participants who are willing to undergo endometrial biopsy during the study period. These subjects will constitute a separate cohort who will enroll in the prospective, randomized, double blind, placebo controlled endometrial biopsy study.
Study Oversight
Has Oversight DMC:
False
Is a FDA Regulated Drug?:
None
Is a FDA Regulated Device?:
None
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?: