Efficacy Trial of CDB 2914 for Emergency Contraception

Completed · Phase 2/Phase 3

Conditions studied: Emergency Contraception

In brief

Objective: To compare the efficacy, safety and tolerance of a 50 mg dose of a new antiprogestin, CDB-2914 with a 0.75 mg bid dose of levonorgestrel as emergency contraception Design: Multicenter, randomized, double blind Phase II study to compare a 50 mg dose of CDB-2914 to a 0.75 mg bid dose of levonorgestrel as emergency contraception Subjects are randomized to receive a one-time treatment with either one dose of 50 mg CDB-2914 (followed 12 hours later by a placebo) or 2 doses of 0.75 mg of levonorgestrel with follow-up visits at 5-7 days after expected onset of menses and another visit at 12-14 days after expected onset of menses (if needed) The primary aim is to evaluate the efficacy of CDB-2914 used by subjects as an emergency postcoital contraceptive in comparison to a group of subjects receiving levonorgestrel.

Key facts

Study ID

NCT00271583

Run by

University of Pittsburgh

People needed

1672

Starts

1999-09-01

Expected to finish

2001-09-01

Last updated by the study team

2007-12-17

Who can join

Age: 18 and older. Sex: female. Healthy volunteers: accepted.

You may qualify if…

• Menstruating women at least 18 years old;
• Give voluntary, written informed consent, and agree to observe all study requirements;
• Request emergency contraception within 72 hours (3 days) after unprotected coitus, as defined by lack of contraceptive use, or condom breakage (including condoms lubricated with spermicide) or other barrier contraceptive method failure;
• Reports that all acts of unprotected coitus during the current cycle are within 72 hours prior to enrollment;
• Willing to abstain from further acts of unprotected intercourse during that cycle;
• History of regular menstrual cycles (mean length of 24-42 days with intra-individual variation of ±5 days);
• At least one normal menstrual cycle (2 menses) post delivery or abortion;
• If subject recently discontinued hormonal contraception, one normal menstrual cycle (2 menses) must have been completed before entry in the study
• For women with a recent history of Depo Provera use, the most recent injection must be at least 3 months before study entry and the subject must have had at least one normal menstrual cycle (2 menses);
• Available for follow-up for at least the next four weeks.

You may not qualify if…

• Currently pregnant (positive high-sensitivity urine pregnancy test);
• pregnant or breast-feeding within the past two months;
• use of hormonal methods of contraception during the current or previous two cycles;
• current user of IUD;
• tubal ligation;
• partners with history of vasectomy;
• unsure about the date of the last menstrual period (+3 days);
• irregular menstrual cycles as defined in the inclusion criteria;
• nausea and vomiting within the previous two weeks;
• impaired hypothalamic-pituitary-adrenal reserve or oral glucocorticoid replacement therapy in the last year.
• Subjects cannot be currently enrolled in any other investigational trial or re-enrolled in this study.

Where it is running

• California Family Health Council — Los Angeles, California, United States
• University of Colorado — Denver, Colorado, United States
• New York University — New York, New York, United States
• University of Cincinnati — Cincinnati, Ohio, United States
• University of Pittsburgh — Pittsburgh, Pennsylvania, United States
• Eastern Virginia Medical School — Norfolk, Virginia, United States

Full record on ClinicalTrials.gov

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