Disparities in Emergency Contraceptive Metabolism Dictate Efficacy

Trial statusRecruiting
Trial phasePhase 4
Trial typeInterventional
Biological sexFemale
Age18-40
SponsorOregon Health and Science University

About this trial

The purpose of this study is to learn more about why some people are at greater risk for oral emergency contraceptive failure while others are not. The investigators want to learn if genetic differences impact the risk of emergency contraception failure.

Eligibility criteria

Qualifiers

Generally healthy women

Aged 18-40

regular menses (every 21-35 days) experiencing ovulatory cycles proven by a single progesterone level of 3 ng/mL or greater during the luteal phase of the screening cycle.

Disqualifiers

Pregnant, seeking pregnancy, or breastfeeding

Known allergy to study medication

Recent use of hormonal contraception

Irregular periods (<21 days or >35 day cycles)

Trial design

Treatments tested in this trial

  • Ulipristal acetate

Treatment groups

140 Participants
are divided into 2 treatment groups

Sponsors and collaborators

Oregon Health and Science University

Lead sponsor

Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)

Collaborator