Skip to content

Ulipristal Acetate for Use in Early Pregnancy Loss

Ulipristal Acetate for Use in Early Pregnancy Loss: A Phase 2 Pilot Feasibility Study

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05216952
Enrollment
3
Registered
2022-02-01
Start date
2022-05-11
Completion date
2023-04-30
Last updated
2023-06-28

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Anembryonic Pregnancy, Missed Abortion, Non-Viable Pregnancy

Keywords

Medical management of miscarriage

Brief summary

The investigators will study the feasibility of using 90mg ulipristal acetate, a selective progesterone receptor agonist, as an adjunct to 800mcg vaginal misoprostol for the medical management of early pregnancy loss. Patients will be followed to assess effective treatment of early pregnancy loss, additional interventions needed, side effects, adverse events and patient acceptability.

Detailed description

Study Background: Early pregnancy loss affects approximately 10% of women throughout their reproductive lives and many women desire medical management of early pregnancy loss. Data from two large randomized controlled trials suggests that pretreatment with mifepristone 200mg, a selective progesterone receptor modulator, prior to administration of misoprostol 800mcg increases effectiveness of medical management of early pregnancy loss and decreases the need for subsequent surgical management. Ulipristal acetate (UPA) is another selective progesterone receptor modulator that may allow for similar priming of the cervix and sensitization of the myometrium to the prostaglandins to improve effectiveness of misoprostol in medical management of early pregnancy loss. Ulipristal acetate is available as a prescription medication through commercial pharmacies. Thus, utilizing UPA plus misoprostol for early pregnancy loss may improve access to patients. Study Objectives: Primary Objective: \- To assess if 90mg ulipristal acetate as an adjunct to 800mcg vaginal misoprostol is a feasible method for medical management of early pregnancy loss. Secondary Objectives: * To evaluate if participants taking ulipristal acetate plus misoprostol achieve complete resolution of early pregnancy loss. * To investigate if patients using ulipristal acetate plus misoprostol have side effects or adverse events when used for early pregnancy loss. * To identify if patients find ulipristal acetate and misoprostol an acceptable treatment for early pregnancy loss. Study Population: Participants eligible for the study include women over age 18 presenting with a non-viable pregnancy between 5- and 12-weeks gestation or an anembryonic gestation and desiring medical management. Study Location: All study activities will take place at University of North Carolina-Chapel Hill (UNC). Participants will be recruited from OBGYN clinics following diagnosis of early pregnancy loss on viability scan. All follow up study activities will take place at UNC Chapel Hill Family Planning Clinic. Study Intervention: Ulipristal acetate is a selective progesterone receptor modulator that is currently FDA approved for the use of emergency contraception. Three 30mg tablets will be administered orally for a total dose of 90mg. Participants will be instructed to self-administer 800mcg of misoprostol 6 to 18 hours after receiving ulipristal acetate as per the standard of care for early pregnancy loss management. Participants will be followed for resolution of their early pregnancy loss.

Interventions

DRUGUlipristal Acetate Tablets

90mg (three 30mg tablets) administered orally once

800mcg (four 200mcg pills) administered vaginally once 6-18 hours following ulipristal acetate

Sponsors

North Carolina Translational and Clinical Sciences Institute
CollaboratorOTHER
University of North Carolina, Chapel Hill
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Female, age 18 years or older * English- or Spanish-speaking * Ultrasound examination showing a non-viable intrauterine pregnancy between 5- and 12-weeks' gestation or anembryonic gestation * Stated willingness to comply with all study procedures and availability for the duration of the study * Provision of signed and dated informed consent form

Exclusion criteria

* Desire for non-medical management of early pregnancy loss (either expectant management or surgical management) * Hemodynamically unstable * Evidence of incomplete or inevitable abortion (due to high efficacy of misoprostol alone) * Contraindication or allergy to ulipristal acetate or misoprostol (glaucoma, mitral stenosis, sickle cell anemia, chronic glucocorticoid use) * Evidence of a viable intrauterine pregnancy, ectopic pregnancy, or pregnancy with intrauterine device in place * Evidence of pelvic infection * Hemoglobin \<9.5g/dL * Known cardiovascular disease (arrhythmia, cardiac failure, valvular disease, angina) * Known clotting or bleeding disorder, or on anticoagulation therapy * Use of the following medications that may influence metabolization of the study medications: barbiturates, bosentan, carbamazepine, felbamate, griseofulvin, oxcarbazepine, phenytoin, rifampin, St. John's Wort, topiramate * Use of CYP3A4 inhibitors within five elimination half-lives of ulipristal acetate or other strong CYP3A4 inhibitors * Chronic adrenal failure (risk of acute renal insufficiency) * Concurrent long-term corticosteroid therapy (risk of acute renal insufficiency) * Any history of underlying liver disorder, including hepatitis * Elevation of any or all liver enzymes (alanine aminotransferase, aspartate aminotransferase, total bilirubin) above the upper limit of normal (ULN) at baseline testing prior to enrollment * A family history of hepatitis or currently living with a person who has been given a diagnosis of hepatitis * A history of or currently working as a sex worker * A history of or currently using intravenous (IV) drugs * A self-reported history of alcohol dependency or abuse

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Participants Adherent to Study ProtocolFrom admission until day 3 follow up, +/- 1 dayMeasured as number of participants self reporting adherence to study intervention of ulipristal acetate followed by misoprostol taken 6-18 hours later divided by number of participants enrolled in study.
Percentage of Participants Retained in Study ProtocolFrom admission until day 30 follow up, +/- 7 daysMeasured as number of participants attending all required study visits (day 0, day 3, day 8, and day 30) divided by number of participants enrolled in study
Percentage of Participants Recruited to Study ProtocolBaselineMeasured as number of participants enrolled in study divided by number of patients screened for participation in study

Secondary

MeasureTime frameDescription
Median Acceptability of Study InterventionFrom admission until day 30 follow up, +/- 7 daysParticipant reported ordinal data based on 4 Likert scale questions about acceptability of study intervention with scores ranging from 1-5 (1=Very Unlikely, 2=More Unlikely, 3=Neutral, 4=More Likely, 5=Very Likely). Higher scores indicated more acceptable treatment.
Number of Participants With Treatment-Related Adverse EventsFrom admission until day 30 follow up, +/- 7 daysParticipant reported adverse events based on pre-specified list (bleeding requiring hospitalization and/or blood transfusion, pelvic infection requiring hospitalization and/or antibiotics) that may occur with medication management of early pregnancy loss.
Number of Participants With Resolution of Early Pregnancy Loss Following Study InterventionFrom admission until day 3 follow up, +/- 1 dayAbsence of gestational sac on transvaginal ultrasound examination on day 3 follow up
Number of Participants With Treatment-Related Side EffectsFrom admission until day 30 follow up, +/- 7 daysParticipant reported side effects based on pre-specified list of common side effects (fatigue, headache, dizziness, chills, nausea, diarrhea, vomiting, severe cramping, and fever) that may occur with medication management of early pregnancy loss.

Other

MeasureTime frameDescription
Number of Participants Needing Additional Medication for Resolution of Early Pregnancy LossFrom admission until day 30 follow up, +/- 7 daysParticipant reported need for additional dose of misoprostol for resolution of early pregnancy loss.
Number of Participants Needing Surgical Management for Resolution of Early Pregnancy LossFrom admission until day 30 follow up, +/- 7 daysParticipant reported need for vacuum aspiration for resolution of early pregnancy loss.

Countries

United States

Participant flow

Participants by arm

ArmCount
Ulipristal Acetate (UPA) 90 mg
Participants receive ulipristal acetate 90 mg PO followed by self-administration of misoprostol 800 mcg vaginally 6 to 18 hours following ulipristal acetate administration. Ulipristal Acetate Tablets: 90 mg (three 30 mg tablets) administered orally once Misoprostol Pill: 800 mcg (four 200 mcg pills) administered vaginally once 6-18 hours following ulipristal acetate
3
Total3

Baseline characteristics

CharacteristicUlipristal Acetate (UPA) 90 mg
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
0 Participants
Age, Categorical
Between 18 and 65 years
3 Participants
Age, Continuous34 years
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
3 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
0 Participants
Race (NIH/OMB)
Black or African American
0 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
3 Participants
Region of Enrollment
United States
3 Participants
Sex: Female, Male
Female
3 Participants
Sex: Female, Male
Male
0 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 3
other
Total, other adverse events
3 / 3
serious
Total, serious adverse events
1 / 3

Outcome results

Primary

Percentage of Participants Adherent to Study Protocol

Measured as number of participants self reporting adherence to study intervention of ulipristal acetate followed by misoprostol taken 6-18 hours later divided by number of participants enrolled in study.

Time frame: From admission until day 3 follow up, +/- 1 day

ArmMeasureValue (NUMBER)
Ulipristal Acetate (UPA) 90 mgPercentage of Participants Adherent to Study Protocol100 percentage of participants
Primary

Percentage of Participants Recruited to Study Protocol

Measured as number of participants enrolled in study divided by number of patients screened for participation in study

Time frame: Baseline

Population: The number of potential participants screened for study eligibility.

ArmMeasureValue (NUMBER)
Ulipristal Acetate (UPA) 90 mgPercentage of Participants Recruited to Study Protocol37.5 percentage of participants
Primary

Percentage of Participants Retained in Study Protocol

Measured as number of participants attending all required study visits (day 0, day 3, day 8, and day 30) divided by number of participants enrolled in study

Time frame: From admission until day 30 follow up, +/- 7 days

ArmMeasureValue (NUMBER)
Ulipristal Acetate (UPA) 90 mgPercentage of Participants Retained in Study Protocol100 percentage of participants
Secondary

Median Acceptability of Study Intervention

Participant reported ordinal data based on 4 Likert scale questions about acceptability of study intervention with scores ranging from 1-5 (1=Very Unlikely, 2=More Unlikely, 3=Neutral, 4=More Likely, 5=Very Likely). Higher scores indicated more acceptable treatment.

Time frame: From admission until day 30 follow up, +/- 7 days

ArmMeasureGroupValue (MEDIAN)
Ulipristal Acetate (UPA) 90 mgMedian Acceptability of Study InterventionWould you use these medications again if you had another miscarriage?3 score on a scale
Ulipristal Acetate (UPA) 90 mgMedian Acceptability of Study InterventionWould you recommend these medications to a friend with a miscarriage?4 score on a scale
Ulipristal Acetate (UPA) 90 mgMedian Acceptability of Study InterventionIf possible to take Ulipristal Acetate (UPA) at home, would you be more or less likely to use again?4 score on a scale
Ulipristal Acetate (UPA) 90 mgMedian Acceptability of Study InterventionIf possible to take UPA at a different time, would you be more or less likely to use again?3 score on a scale
Secondary

Number of Participants With Resolution of Early Pregnancy Loss Following Study Intervention

Absence of gestational sac on transvaginal ultrasound examination on day 3 follow up

Time frame: From admission until day 3 follow up, +/- 1 day

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Ulipristal Acetate (UPA) 90 mgNumber of Participants With Resolution of Early Pregnancy Loss Following Study Intervention3 Participants
Secondary

Number of Participants With Treatment-Related Adverse Events

Participant reported adverse events based on pre-specified list (bleeding requiring hospitalization and/or blood transfusion, pelvic infection requiring hospitalization and/or antibiotics) that may occur with medication management of early pregnancy loss.

Time frame: From admission until day 30 follow up, +/- 7 days

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Ulipristal Acetate (UPA) 90 mgNumber of Participants With Treatment-Related Adverse EventsBleeding requiring hospitalization and/or blood transfusion1 Participants
Ulipristal Acetate (UPA) 90 mgNumber of Participants With Treatment-Related Adverse EventsPelvic infection requiring hospitalization and/or antibiotics0 Participants
Ulipristal Acetate (UPA) 90 mgNumber of Participants With Treatment-Related Adverse EventsOther0 Participants
Secondary

Number of Participants With Treatment-Related Side Effects

Participant reported side effects based on pre-specified list of common side effects (fatigue, headache, dizziness, chills, nausea, diarrhea, vomiting, severe cramping, and fever) that may occur with medication management of early pregnancy loss.

Time frame: From admission until day 30 follow up, +/- 7 days

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Ulipristal Acetate (UPA) 90 mgNumber of Participants With Treatment-Related Side EffectsSevere cramping1 Participants
Ulipristal Acetate (UPA) 90 mgNumber of Participants With Treatment-Related Side EffectsFatigue2 Participants
Ulipristal Acetate (UPA) 90 mgNumber of Participants With Treatment-Related Side EffectsHeadache0 Participants
Ulipristal Acetate (UPA) 90 mgNumber of Participants With Treatment-Related Side EffectsDizziness2 Participants
Ulipristal Acetate (UPA) 90 mgNumber of Participants With Treatment-Related Side EffectsChills1 Participants
Ulipristal Acetate (UPA) 90 mgNumber of Participants With Treatment-Related Side EffectsNausea1 Participants
Ulipristal Acetate (UPA) 90 mgNumber of Participants With Treatment-Related Side EffectsDiarrhea0 Participants
Ulipristal Acetate (UPA) 90 mgNumber of Participants With Treatment-Related Side EffectsVomiting0 Participants
Ulipristal Acetate (UPA) 90 mgNumber of Participants With Treatment-Related Side EffectsFever0 Participants
Other Pre-specified

Number of Participants Needing Additional Medication for Resolution of Early Pregnancy Loss

Participant reported need for additional dose of misoprostol for resolution of early pregnancy loss.

Time frame: From admission until day 30 follow up, +/- 7 days

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Ulipristal Acetate (UPA) 90 mgNumber of Participants Needing Additional Medication for Resolution of Early Pregnancy Loss0 Participants
Other Pre-specified

Number of Participants Needing Surgical Management for Resolution of Early Pregnancy Loss

Participant reported need for vacuum aspiration for resolution of early pregnancy loss.

Time frame: From admission until day 30 follow up, +/- 7 days

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Ulipristal Acetate (UPA) 90 mgNumber of Participants Needing Surgical Management for Resolution of Early Pregnancy Loss0 Participants

Source: ClinicalTrials.gov · Data processed: Jul 3, 2026