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Trial · NCT03909152

A Study of Onapristone ER Alone Or In Combination With Anastrozole in Gynecologic Cancers That Respond to Progesterone

NCT03909152, Phase 2, Completed, Memorial Sloan Kettering Cancer Center; results first posted 2025-07-28

3 sourcestrials-2026-11-12-0.5.0

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ConductScience Library. A Study of Onapristone ER Alone Or In Combination With Anastrozole in Gynecologic Cancers That Respond to Progesterone. Trials, record NCT03909152. Release trials-2026-11-12-0.5.0, 12 Nov 2026. https://conductscience.org/library/trials/NCT03909152

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Trial

As registered on ClinicalTrials.gov, in the graph's capture of the registry.

Title
A Study of Onapristone ER Alone Or In Combination With Anastrozole in Gynecologic Cancers That Respond to Progesterone
NCT number
NCT03909152
Status
Completed
Phases
Phase 2
Enrollment
34 participants, actual
Lead sponsor
Memorial Sloan Kettering Cancer Center
Conditions
Granulosa Cell Ovarian Cancer, Low Grade Serous Ovarian/ Primary Peritoneal Cancer, Endometrioid Endometrial Cancer
Interventions
Onapristone ER, Onapristone ER + Anastrozole
First posted
2019-04-09
Last updated
2025-07-28
Results first posted
2025-07-28

Source ClinicalTrials.gov

Registered outcomes1

Each outcome the trial registered, primary first, in ClinicalTrials.gov's words.

ListOutcomeTime frameDescription
PrimaryOverall Response Ratewithin 36 weeks
as determined by RECIST 1.1 response. Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.0) for target lesions and assessed by MRI: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the longest diameter of target lesions; Overall Response (OR) = Complete Response + Partial Response (CR + PR)

Outcomes1

Each outcome the trial posted results for, in ClinicalTrials.gov's words.

TypeOutcomeTime framePopulationUnitsMeasured as
PRIMARYOverall Response Ratewithin 36 weeksParticipantsCOUNT_OF_PARTICIPANTS

Results by group8

Each measurement the trial posted, group by group, in the words and numbers it posted.

OutcomeGroupCategoryValueSpreadUnits
Overall Response RatePR+ Granulosa Cell Tumor (This Arm is CLOSED)Participants with Overall Response Rate (Complete Response + Partial Response)0Participants
Overall Response RatePR+ Low Grade Serous Ovarian CancerParticipants with Overall Response Rate (Complete Response + Partial Response)0Participants
Overall Response RatePR+ Endometrioid Endometrial CancerParticipants with Overall Response Rate (Complete Response + Partial Response)0Participants
Overall Response RatePR+ Granulosa Cell Ovarian CancerParticipants with Overall Response Rate (Complete Response + Partial Response)0Participants
Overall Response RatePR+ Granulosa Cell Tumor (This Arm is CLOSED)Participants with no Overall Response Rate (Complete Response + Partial Response)14Participants
Overall Response RatePR+ Low Grade Serous Ovarian CancerParticipants with no Overall Response Rate (Complete Response + Partial Response)5Participants
Overall Response RatePR+ Endometrioid Endometrial CancerParticipants with no Overall Response Rate (Complete Response + Partial Response)1Participants
Overall Response RatePR+ Granulosa Cell Ovarian CancerParticipants with no Overall Response Rate (Complete Response + Partial Response)14Participants

Participant flow12

How many started, completed or left each group, period by period.

PeriodMilestoneGroupParticipantsUnits counted
Overall StudySTARTEDPR+ Granulosa Cell Tumor (This Arm is CLOSED)14
Overall StudySTARTEDPR+ Low Grade Serous Ovarian Cancer5
Overall StudySTARTEDPR+ Endometrioid Endometrial Cancer1
Overall StudySTARTEDPR+ Granulosa Cell Ovarian Cancer14
Overall StudyCOMPLETEDPR+ Granulosa Cell Tumor (This Arm is CLOSED)0
Overall StudyCOMPLETEDPR+ Low Grade Serous Ovarian Cancer0
Overall StudyCOMPLETEDPR+ Endometrioid Endometrial Cancer0
Overall StudyCOMPLETEDPR+ Granulosa Cell Ovarian Cancer0
Overall StudyNOT COMPLETEDPR+ Granulosa Cell Tumor (This Arm is CLOSED)14
Overall StudyNOT COMPLETEDPR+ Low Grade Serous Ovarian Cancer5

Adverse events308

Each adverse event the trial posted, group by group: the participants affected out of those at risk.

TypeEventOrgan systemGroupAffectedAt riskEvents
otherAbdominal distensionGastrointestinal disordersPR+ Granulosa Cell Tumor (This Arm is CLOSED)114
otherAbdominal distensionGastrointestinal disordersPR+ Low Grade Serous Ovarian Cancer05
otherAbdominal distensionGastrointestinal disordersPR+ Endometrioid Endometrial Cancer01
otherAbdominal distensionGastrointestinal disordersPR+ Granulosa Cell Ovarian Cancer014
otherAbdominal painGastrointestinal disordersPR+ Granulosa Cell Tumor (This Arm is CLOSED)414
otherAbdominal painGastrointestinal disordersPR+ Low Grade Serous Ovarian Cancer15
otherAbdominal painGastrointestinal disordersPR+ Endometrioid Endometrial Cancer01
otherAbdominal painGastrointestinal disordersPR+ Granulosa Cell Ovarian Cancer314
otherAlanine aminotransferase increasedInvestigationsPR+ Granulosa Cell Tumor (This Arm is CLOSED)014
otherAlanine aminotransferase increasedInvestigationsPR+ Low Grade Serous Ovarian Cancer05

Adverse event totals12

The totals the trial posted for each group.

TotalGroupAffectedAt risk
Total, all-cause mortalityPR+ Granulosa Cell Tumor (This Arm is CLOSED)014
Total, all-cause mortalityPR+ Low Grade Serous Ovarian Cancer05
Total, all-cause mortalityPR+ Endometrioid Endometrial Cancer01
Total, all-cause mortalityPR+ Granulosa Cell Ovarian Cancer014
Total, other adverse eventsPR+ Granulosa Cell Tumor (This Arm is CLOSED)1414
Total, other adverse eventsPR+ Low Grade Serous Ovarian Cancer55
Total, other adverse eventsPR+ Endometrioid Endometrial Cancer11
Total, other adverse eventsPR+ Granulosa Cell Ovarian Cancer1414
Total, serious adverse eventsPR+ Granulosa Cell Tumor (This Arm is CLOSED)214
Total, serious adverse eventsPR+ Low Grade Serous Ovarian Cancer35

Papers0

The papers the trial lists on ClinicalTrials.gov.

None in this release.

Grants0

The grants NIH RePORTER links to the trial, newest funded first: NIH's, and some of AHRQ's, CDC's, FDA's and VA's. Each shows its title, principal investigators, organization and funder in its newest year.

None in this release.

Trial comparisons0

Comparisons of the trial's two groups, calculated by ConductScience from the counts it posted.

None in this release.

Tests0

The ConductCognition tests this trial's registered outcomes name, as ScienceGraph matched them in trial-tests-2026-11-12-0.2.1.

None in this release.

Data dates

The day each source was copied for this release.

ClinicalTrials.gov
2026-11-12
ClinicalTrials.gov
Results, from AACT
2026-03-23
AACT
NIH grant links
2026-11-13
NIH RePORTER

Sources 3

  • ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
  • ClinicalTrials.govNo license stated
  • NIH RePORTER's clinical studies and project filesPublic domain
Each source's terms
  • ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
  • ClinicalTrials.govnone stated
  • NIH RePORTER's clinical studies and project filesPublic domain (NIH RePORTER)

ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.

For software

Read this trial from software.

The record and each of its lists are JSON, twenty rows a page. No key.

GET https://conductscience.org/api/trials/v1/NCT03909152

GET https://conductscience.org/api/trials/v1/NCT03909152/events?page=2