About this trial
This phase II trial tests whether taking ulipristal acetate prior to a mammogram decreases breast density for people with a history of dense breast tissue. One limitation to breast cancer screening with mammography is dense breast tissue, which decreases the sensitivity of screening as breast density masks cancer and precancerous lesions. Ulipristal acetate lowers the amount of progesterone made by the body which may temporarily decrease the density of the breast tissue, allowing for a more accurate mammogram for people with dense breast tissue.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Participant must provide written informed consent before any study-specific procedures or interventions are performed
Ages 18-50 years. The maximum age cut off is due to the intervention only applying to premenopausal physiology only
Assigned female at birth with at least one ovary in situ. Members of all races and ethnic groups will be included
Presenting for a screening mammogram
Disqualifiers
Having a mammogram as part of a diagnostic process
Current breast implants in one or both breasts
Pregnant, less than 1 year postpartum or breastfeeding within last 6 months at the time of their antecedent mammogram or their current mammogram. This exclusion is due to known changes in mammograms during pregnancy and postpartum that would preclude comparative analyses
Using hormonal medications including estrogens or progestins
Trial design
Single group
Treatments tested in this trial
Biospecimen Collection
Procedure/SurgeryUndergo blood sample collection
Magnetic Resonance Imaging
Procedure/SurgeryUndergo MRI
Mammogram
Procedure/SurgeryParticipants will undergo their standard of care mammogram.
Survey Administration
Other interventionAncillary studies
Ulipristal Acetate
DrugGiven orally
Treatment groups
Trial outcomes
Primary outcomes
Difference in percent dense area
DEEP-Libra will be utilized to obtain the change in breast percent density value per patient between the historical baseline mammogram and mammogram following ulipristal acetate. Both images (baseline and mammogram following ulipristal acetate) will be independently analyzed with DEEP-Libra to generate the percent dense area and then the mean difference will be recorded. The mean and standard deviation of the difference in percent dense area between the baseline and mammogram following ulipristal acetate will be reported.
Secondary outcomes
Progesterone level
Each participant will be categorized as being in their luteal phase, follicular phase, or as experiencing imminent ovulation at the time of both breast magnetic resonance imagings (MRI): at baseline and immediately after completion of the study drug. The frequency and proportion of participants in each category will be reported and assessed descriptively, as well as median and range, or mean and standard deviation.
Estradiol level
Each participant will be categorized as being in their luteal phase, follicular phase, or as experiencing imminent ovulation at the time of both breast MRIs: at baseline and immediately after completion of the study drug. The frequency and proportion of participants in each category will be reported and assessed descriptively, as well as median and range, or mean and standard deviation.
Luteinizing hormone level
Each participant will be categorized as being in their luteal phase, follicular phase, or as experiencing imminent ovulation at the time of both breast MRIs: at baseline and immediately after completion of the study drug. The frequency and proportion of participants in each category will be reported and assessed descriptively, as well as median and range, or mean and standard deviation.
Patient reported doses and deviations greater than 24 hours from recommended doses
Administration of the study drug and deviations of the study drug administration greater than 24 hours will be described and utilized for determination of study population from the first dose of the study drug to the day of the mammogram following ulipristal acetate.
Sponsors and contacts
Click on the lead sponsor to view all of their trials.
OHSU Knight Cancer Institute
Lead sponsor
Oregon Health and Science University
Collaborator