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A Study in Ovarian Cancer Patients Evaluating Rucaparib and Nivolumab as Maintenance Treatment Following Response to Front-Line Platinum-Based Chemotherapy

ATHENA (A Multicenter, Randomized, Double-Blind, Placebo-Controlled Phase 3 Study in Ovarian Cancer Patients Evaluating Rucaparib and Nivolumab as Maintenance Treatment Following Response to Front-Line Platinum-Based Chemotherapy)

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03522246
Acronym
ATHENA
Enrollment
1097
Registered
2018-05-11
Start date
2018-05-14
Completion date
2030-12-30
Last updated
2025-06-24

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

Conditions

Complete Response, Epithelial Ovarian Cancer, Fallopian Tube Cancer, FIGO Stage III-IV, Newly Diagnosed, Partial Response, Primary Peritoneal

Keywords

PARP inhibitor, PARPi, HRD, ATHENA, homologous recombination, DNA repair, LOH, DNA defect, DNA anomaly, Rucaparib, Nivolumab, PD-1, Immuno-, oncology, Tumor, mutational, burden, BRCA, First-line, Primary Therapy, Primary Treatment

Brief summary

This is a Phase 3, randomized, multinational, double-blind, dual placebo-controlled, 4-arm study evaluating rucaparib and nivolumab as maintenance treatment following response to front-line treatment in newly diagnosed ovarian cancer patients. Response to treatment will be analyzed based on homologous recombination (HR) status of tumor samples.

Interventions

DRUGRucaparib

Oral rucaparib will be administered twice daily

DRUGNivolumab

IV nivolumab will be administered once every 4 weeks

DRUGPlacebo Oral Tablet

Placebo tablets will be administered twice daily

IV placebo will be administered once every 4 weeks

Sponsors

Bristol-Myers Squibb
CollaboratorINDUSTRY
Gynecologic Oncology Group
CollaboratorNETWORK
European Network of Gynaecological Oncological Trial Groups (ENGOT)
CollaboratorOTHER
Foundation Medicine
CollaboratorINDUSTRY
pharmaand GmbH
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Masking description

Double-Blind; only the safety cohort will be open label.

Eligibility

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

Inclusion criteria

* Newly diagnosed advanced (FIGO stage III-IV) epithelial ovarian, fallopian tube, or primary peritoneal cancer. * Completed cytoreductive surgery, including at least a bilateral salpingo-oophorectomy and partial omentectomy, either prior to chemotherapy (primary surgery) or following neoadjuvant chemotherapy (interval debulking) * Completed first-line platinum-based chemotherapy and surgery with a response, in the opinion of the Investigator * Sufficient tumor tissue for planned analysis * ECOG performance status of 0 or 1 * Patients must be 20 years of age to consent in Japan, Taiwan and South Korea; in all other participating countries patients must be 18 years of age to consent

Exclusion criteria

* Pure sarcomas or borderline tumors or mucinous tumors * Active second malignancy * Known central nervous system brain metastases * Any prior treatment for ovarian cancer, other than the first-line platinum regimen * Evidence of interstitial lung disease or active pneumonitis * Active, known or suspected autoimmune disease * Condition requiring active systemic treatment with either corticosteroids (\>10 mg daily prednisone equivalent) or other immunosuppressive medications

Design outcomes

Primary

MeasureTime frameDescription
Monotherapy Arm B and Arm D: Investigator Assessed Progression-free Survival (PFS)From randomization until disease progression (up to the primary data analysis at approximately 39 months)PFS by investigator was defined as the time from randomization to disease progression, according to Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1 as assessed by the investigator, or death due to any cause, whichever occurred first. Progressive disease was defined as a 20% increase in the sum of the longest diameter of measurable lesions, an unequivocal increase in existing non-measurable lesion(s), or the appearance of unequivocal new lesion(s).
Monotherapy Arm B and Arm D: Investigator Assessed PFSFrom randomization until disease progression (up to the primary data analysis at approximately 39 months)PFS by investigator was defined as the time from randomization to disease progression, according to RECIST v1.1 as assessed by the investigator, or death due to any cause, whichever occurred first. Progressive disease was defined as a 20% increase in the sum of the longest diameter of measurable lesions, an unequivocal increase in existing non-measurable lesion(s), or the appearance of unequivocal new lesion(s).
Combination Therapy Arm A and Arm B: Investigator Assessed PFSFrom randomization until disease progression (up to the combination therapy interim analysis at approximately 66 months)PFS by investigator was defined as the time from randomization to disease progression, according to RECIST v1.1 as assessed by the investigator, or death due to any cause, whichever occurred first. Progressive disease was defined as a 20% increase in the sum of the longest diameter of measurable lesions, an unequivocal increase in existing non-measurable lesion(s), or the appearance of unequivocal new lesion(s).

Secondary

MeasureTime frameDescription
Monotherapy Arm B and Arm D: Blinded Independent Central Review (BICR) PFSFrom randomization until disease progression (up to the primary data analysis at approximately 39 months)PFS was assessed by BICR per RECIST v1.1 as the time from randomization to disease progression, or death due to any cause, whichever occurred first. Progressive disease was defined as a 20% increase in the sum of the longest diameter of measurable lesions, an unequivocal increase in existing non-measurable lesion(s), or the appearance of unequivocal new lesion(s).
Monotherapy Arm B and Arm D: BICR PFSFrom randomization until disease progression (up to the primary data analysis at approximately 39 months)PFS was assessed by BICR per RECIST v1.1 as the time from randomization to disease progression, or death due to any cause, whichever occurred first. Progressive disease was defined as a 20% increase in the sum of the longest diameter of measurable lesions, an unequivocal increase in existing non-measurable lesion(s), or the appearance of unequivocal new lesion(s).
Combination Therapy Arm A and Arm B: BICR PFSFrom randomization until disease progression (up to the combination therapy interim analysis at approximately 66 months)PFS was assessed by BICR per RECIST v1.1 as the time from randomization to disease progression, or death due to any cause, whichever occurred first. Progressive disease was defined as a 20% increase in the sum of the longest diameter of measurable lesions, an unequivocal increase in existing non-measurable lesion(s), or the appearance of unequivocal new lesion(s).
Monotherapy Arm B and Arm D: Overall Survival (OS)From randomization until death due to any cause (up to the primary data analysis at approximately 36 months)OS was defined as the number of days (measured in months) from the date of randomization to the date of death due to any cause.
Monotherapy Arm B and Arm D: OSFrom randomization until death due to any cause (up to the primary data analysis at approximately 40 months)OS was defined as the number of days (measured in months) from the date of randomization to the date of death due to any cause.
Combination Therapy Arm A and Arm B: OSFrom randomization until death due to any cause (up to the combination therapy interim analysis at approximately 72 months)OS was defined as the number of days (measured in months) from the date of randomization to the date of death due to any cause.
Monotherapy Arm B and Arm D: Objective Response Rate (ORR)From randomization until disease progression (up to the primary data analysis at approximately 39 months)ORR was defined as the percentage of participants with a confirmed Complete Response (CR) or Partial Response (PR) as assessed by the Investigator per RECIST 1.1. CR: Disappearance of all target lesions. Any pathological lymph nodes (whether target or nontarget) must have reduction in short axis to \< 10 mm. PR: At least a 30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters.
Monotherapy Arm B and Arm D: ORRFrom randomization until disease progression (up to the primary data analysis at approximately 39 months)ORR was defined as the percentage of participants with CR or PR as assessed by the Investigator per RECIST 1.1. CR: Disappearance of all target lesions. Any pathological lymph nodes (whether target or nontarget) must have reduction in short axis to \< 10 mm. PR: At least a 30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters.
Combination Therapy Arm A and Arm B: ORRFrom randomization until disease progression (up to the combination therapy interim analysis at approximately 66 months)ORR was defined as the percentage of participants with CR or PR as assessed by the Investigator per RECIST 1.1. CR: Disappearance of all target lesions. Any pathological lymph nodes (whether target or nontarget) must have reduction in short axis to \< 10 mm. PR: At least a 30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters.
Monotherapy Arm B and Arm D: Duration of Response (DOR)From first confirmed response until disease progression (up to the primary data analysis at approximately 30 months)DOR was assessed by the investigator and defined as the interval from the first documentation of objective response (CR or PR per RECIST v1.1) to the earlier of the first documentation of progressive disease (PD) or death from any cause. CR: Disappearance of all target lesions. Any pathological lymph nodes (whether target or nontarget) must have reduction in short axis to \< 10 mm. PR: At least a 30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters. PD: 20% increase in the sum of the longest diameter of measurable lesions, an unequivocal increase in existing non-measurable lesion(s), or the appearance of unequivocal new lesion(s).
Monotherapy Arm B and Arm D: DORFrom first confirmed response until disease progression (up to the primary data analysis at approximately 33 months)DOR was assessed by the investigator and defined as the interval from the first documentation of objective response (CR or PR per RECIST v1.1) to the earlier of the first documentation of PD or death from any cause. CR: Disappearance of all target lesions. Any pathological lymph nodes (whether target or nontarget) must have reduction in short axis to \< 10 mm. PR: At least a 30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters. PD: 20% increase in the sum of the longest diameter of measurable lesions, an unequivocal increase in existing non-measurable lesion(s), or the appearance of unequivocal new lesion(s).
Combination Therapy Arm A and Arm B: DORFrom first confirmed response until disease progression (up to the combination therapy interim analysis at approximately 60 months)DOR was assessed by the investigator and defined as the interval from the first documentation of objective response (CR or PR per RECIST v1.1) to the earlier of the first documentation of PD or death from any cause. CR: Disappearance of all target lesions. Any pathological lymph nodes (whether target or nontarget) must have reduction in short axis to \< 10 mm. PR: At least a 30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters. PD: 20% increase in the sum of the longest diameter of measurable lesions, an unequivocal increase in existing non-measurable lesion(s), or the appearance of unequivocal new lesion(s).

Countries

Australia, Belgium, Canada, Czechia, Denmark, Finland, Germany, Greece, Ireland, Israel, Italy, Japan, New Zealand, Poland, Romania, Russia, Singapore, South Korea, Spain, Sweden, Taiwan, Turkey (Türkiye), United Kingdom, United States

Participant flow

Pre-assignment details

Enrollment is complete and the study is ongoing. Data are presented here for the primary endpoint analysis.

Participants by arm

ArmCount
Arm A: Rucaparib + Nivolumab
Participants received oral rucaparib tablets twice daily and nivolumab IV infusion once every 4 weeks.
436
Arm B: Rucaparib + Placebo
Participants received oral rucaparib tablets twice daily and placebo IV infusion once every 4 weeks.
427
Arm C: Placebo + Nivolumab
Participants received oral placebo tablets twice daily and nivolumab IV infusion once every 4 weeks
108
Arm D: Placebo + Placebo
Participants received oral placebo tablets twice daily and placebo IV infusion once every 4 weeks.
111
Japanese Open-label Safety Cohort: Rucaparib + Nivolumab
Participants received oral rucaparib tablets twice daily and nivolumab IV infusion once every 4 weeks.
15
Total1,097

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004
Overall StudyOngoing in Long-Term Follow-up (Alive)18419446450

Baseline characteristics

CharacteristicArm A: Rucaparib + NivolumabArm B: Rucaparib + PlaceboArm C: Placebo + NivolumabArm D: Placebo + PlaceboJapanese Open-label Safety Cohort: Rucaparib + NivolumabTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
155 Participants157 Participants36 Participants43 Participants2 Participants393 Participants
Age, Categorical
Between 18 and 65 years
281 Participants270 Participants72 Participants68 Participants13 Participants704 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
15 Participants17 Participants1 Participants1 Participants0 Participants34 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
405 Participants397 Participants102 Participants107 Participants14 Participants1025 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
16 Participants13 Participants5 Participants3 Participants1 Participants38 Participants
Race (NIH/OMB)
American Indian or Alaska Native
2 Participants1 Participants0 Participants1 Participants0 Participants4 Participants
Race (NIH/OMB)
Asian
81 Participants80 Participants22 Participants16 Participants15 Participants214 Participants
Race (NIH/OMB)
Black or African American
8 Participants5 Participants1 Participants3 Participants0 Participants17 Participants
Race (NIH/OMB)
More than one race
0 Participants2 Participants0 Participants1 Participants0 Participants3 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
1 Participants3 Participants0 Participants1 Participants0 Participants5 Participants
Race (NIH/OMB)
Unknown or Not Reported
19 Participants8 Participants2 Participants2 Participants0 Participants31 Participants
Race (NIH/OMB)
White
325 Participants328 Participants83 Participants87 Participants0 Participants823 Participants
Sex: Female, Male
Female
436 Participants427 Participants108 Participants111 Participants15 Participants1097 Participants
Sex: Female, Male
Male
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
deaths
Total, all-cause mortality
12 / 41020 / 4484 / 1072 / 1110 / 15
other
Total, other adverse events
406 / 410433 / 44899 / 107103 / 11115 / 15
serious
Total, serious adverse events
154 / 410117 / 44818 / 10713 / 1114 / 15

Outcome results

Primary

Combination Therapy Arm A and Arm B: Investigator Assessed PFS

PFS by investigator was defined as the time from randomization to disease progression, according to RECIST v1.1 as assessed by the investigator, or death due to any cause, whichever occurred first. Progressive disease was defined as a 20% increase in the sum of the longest diameter of measurable lesions, an unequivocal increase in existing non-measurable lesion(s), or the appearance of unequivocal new lesion(s).

Time frame: From randomization until disease progression (up to the combination therapy interim analysis at approximately 66 months)

Population: The ITT population included all randomized participants. Presented here are data from combination comparison arms (Arm A and Arm B).

ArmMeasureValue (MEDIAN)
Arm B: Rucaparib + PlaceboCombination Therapy Arm A and Arm B: Investigator Assessed PFS15.0 months
Arm D: Placebo + PlaceboCombination Therapy Arm A and Arm B: Investigator Assessed PFS20.2 months
p-value: 0.003895% CI: [1.08, 1.53]Log Rank
Primary

Monotherapy Arm B and Arm D: Investigator Assessed PFS

PFS by investigator was defined as the time from randomization to disease progression, according to RECIST v1.1 as assessed by the investigator, or death due to any cause, whichever occurred first. Progressive disease was defined as a 20% increase in the sum of the longest diameter of measurable lesions, an unequivocal increase in existing non-measurable lesion(s), or the appearance of unequivocal new lesion(s).

Time frame: From randomization until disease progression (up to the primary data analysis at approximately 39 months)

Population: The ITT population included all randomized participants. Presented here are data for the monotherapy comparison arms (Arm B and Arm D).

ArmMeasureValue (MEDIAN)
Arm B: Rucaparib + PlaceboMonotherapy Arm B and Arm D: Investigator Assessed PFS20.2 months
Arm D: Placebo + PlaceboMonotherapy Arm B and Arm D: Investigator Assessed PFS9.2 months
p-value: <0.000195% CI: [0.4, 0.68]Log Rank
Primary

Monotherapy Arm B and Arm D: Investigator Assessed Progression-free Survival (PFS)

PFS by investigator was defined as the time from randomization to disease progression, according to Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1 as assessed by the investigator, or death due to any cause, whichever occurred first. Progressive disease was defined as a 20% increase in the sum of the longest diameter of measurable lesions, an unequivocal increase in existing non-measurable lesion(s), or the appearance of unequivocal new lesion(s).

Time frame: From randomization until disease progression (up to the primary data analysis at approximately 39 months)

Population: The homologous recombination deficiency (HRD) population consisted of all randomized participants with either a tumor tissue alteration in breast cancer genes (BRCA)1 or BRCA2 (tBRCA) or non-tBRCA high loss of heterozygosity (LOHhigh). Presented here are data for the monotherapy comparison arms (Arm B and Arm D).

ArmMeasureValue (MEDIAN)
Arm B: Rucaparib + PlaceboMonotherapy Arm B and Arm D: Investigator Assessed Progression-free Survival (PFS)28.7 months
Arm D: Placebo + PlaceboMonotherapy Arm B and Arm D: Investigator Assessed Progression-free Survival (PFS)11.3 months
p-value: 0.000495% CI: [0.31, 0.72]Log Rank
Secondary

Combination Therapy Arm A and Arm B: BICR PFS

PFS was assessed by BICR per RECIST v1.1 as the time from randomization to disease progression, or death due to any cause, whichever occurred first. Progressive disease was defined as a 20% increase in the sum of the longest diameter of measurable lesions, an unequivocal increase in existing non-measurable lesion(s), or the appearance of unequivocal new lesion(s).

Time frame: From randomization until disease progression (up to the combination therapy interim analysis at approximately 66 months)

Population: BICR was included as a supportive secondary endpoint in the event that the Investigator-assessed PFS result was positive. In the ATHENA-COMBO statistical analysis plan it was specified that the BICR analysis would only be performed if the primary endpoint of Investigator-assessed PFS was statistically significant. Given that the result was negative and not statistically significant, the analysis of BICR was not performed, thus that data is not available and cannot be provided.

Secondary

Combination Therapy Arm A and Arm B: DOR

DOR was assessed by the investigator and defined as the interval from the first documentation of objective response (CR or PR per RECIST v1.1) to the earlier of the first documentation of PD or death from any cause. CR: Disappearance of all target lesions. Any pathological lymph nodes (whether target or nontarget) must have reduction in short axis to \< 10 mm. PR: At least a 30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters. PD: 20% increase in the sum of the longest diameter of measurable lesions, an unequivocal increase in existing non-measurable lesion(s), or the appearance of unequivocal new lesion(s).

Time frame: From first confirmed response until disease progression (up to the combination therapy interim analysis at approximately 60 months)

Population: The ITT population included all randomized participants. Presented here are data from the combination comparison arms (Arm A and Arm B). Here, Overall Number of Participants Analyzed is the number of participants evaluable for this outcome measure with measurable disease at baseline.

ArmMeasureValue (NUMBER)
Arm B: Rucaparib + PlaceboCombination Therapy Arm A and Arm B: DOR13.7 months
Arm D: Placebo + PlaceboCombination Therapy Arm A and Arm B: DOR27.7 months
Secondary

Combination Therapy Arm A and Arm B: ORR

ORR was defined as the percentage of participants with CR or PR as assessed by the Investigator per RECIST 1.1. CR: Disappearance of all target lesions. Any pathological lymph nodes (whether target or nontarget) must have reduction in short axis to \< 10 mm. PR: At least a 30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters.

Time frame: From randomization until disease progression (up to the combination therapy interim analysis at approximately 66 months)

Population: The ITT population included all randomized participants. Presented here are data from combination comparison arms (Arm A and Arm B). Here, Overall Number of Participants Analyzed is the number of participants evaluable for this outcome measure with measurable disease at baseline.

ArmMeasureValue (NUMBER)
Arm B: Rucaparib + PlaceboCombination Therapy Arm A and Arm B: ORR25.6 percentage of participants
Arm D: Placebo + PlaceboCombination Therapy Arm A and Arm B: ORR48.8 percentage of participants
Secondary

Combination Therapy Arm A and Arm B: OS

OS was defined as the number of days (measured in months) from the date of randomization to the date of death due to any cause.

Time frame: From randomization until death due to any cause (up to the combination therapy interim analysis at approximately 72 months)

Population: The ITT population included all randomized participants. Presented here are data from combination comparison arms (Arm A and Arm B).

ArmMeasureValue (MEDIAN)
Arm B: Rucaparib + PlaceboCombination Therapy Arm A and Arm B: OS49.4 months
Arm D: Placebo + PlaceboCombination Therapy Arm A and Arm B: OS58.0 months
Secondary

Monotherapy Arm B and Arm D: BICR PFS

PFS was assessed by BICR per RECIST v1.1 as the time from randomization to disease progression, or death due to any cause, whichever occurred first. Progressive disease was defined as a 20% increase in the sum of the longest diameter of measurable lesions, an unequivocal increase in existing non-measurable lesion(s), or the appearance of unequivocal new lesion(s).

Time frame: From randomization until disease progression (up to the primary data analysis at approximately 39 months)

Population: The ITT population included all randomized participants. Presented here are data from the monotherapy comparison arms (Arm B and Arm D).

ArmMeasureValue (MEDIAN)
Arm B: Rucaparib + PlaceboMonotherapy Arm B and Arm D: BICR PFS25.9 months
Arm D: Placebo + PlaceboMonotherapy Arm B and Arm D: BICR PFS9.1 months
Secondary

Monotherapy Arm B and Arm D: Blinded Independent Central Review (BICR) PFS

PFS was assessed by BICR per RECIST v1.1 as the time from randomization to disease progression, or death due to any cause, whichever occurred first. Progressive disease was defined as a 20% increase in the sum of the longest diameter of measurable lesions, an unequivocal increase in existing non-measurable lesion(s), or the appearance of unequivocal new lesion(s).

Time frame: From randomization until disease progression (up to the primary data analysis at approximately 39 months)

Population: The HRD population consisted of all randomized participants with either tBRCA or non-tBRCA LOHhigh. Presented here are data from the monotherapy comparison arms (Arm B and Arm D).

ArmMeasureValue (MEDIAN)
Arm B: Rucaparib + PlaceboMonotherapy Arm B and Arm D: Blinded Independent Central Review (BICR) PFSNA months
Arm D: Placebo + PlaceboMonotherapy Arm B and Arm D: Blinded Independent Central Review (BICR) PFS9.9 months
Secondary

Monotherapy Arm B and Arm D: DOR

DOR was assessed by the investigator and defined as the interval from the first documentation of objective response (CR or PR per RECIST v1.1) to the earlier of the first documentation of PD or death from any cause. CR: Disappearance of all target lesions. Any pathological lymph nodes (whether target or nontarget) must have reduction in short axis to \< 10 mm. PR: At least a 30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters. PD: 20% increase in the sum of the longest diameter of measurable lesions, an unequivocal increase in existing non-measurable lesion(s), or the appearance of unequivocal new lesion(s).

Time frame: From first confirmed response until disease progression (up to the primary data analysis at approximately 33 months)

Population: The ITT population included all randomized participants. Presented here are data from the monotherapy comparison arms (Arm B and Arm D). Here, Overall Number of Participants Analyzed is the number of participants evaluable for this outcome measure with measurable disease at baseline.

ArmMeasureValue (NUMBER)
Arm B: Rucaparib + PlaceboMonotherapy Arm B and Arm D: DOR22.1 months
Arm D: Placebo + PlaceboMonotherapy Arm B and Arm D: DOR5.5 months
Secondary

Monotherapy Arm B and Arm D: Duration of Response (DOR)

DOR was assessed by the investigator and defined as the interval from the first documentation of objective response (CR or PR per RECIST v1.1) to the earlier of the first documentation of progressive disease (PD) or death from any cause. CR: Disappearance of all target lesions. Any pathological lymph nodes (whether target or nontarget) must have reduction in short axis to \< 10 mm. PR: At least a 30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters. PD: 20% increase in the sum of the longest diameter of measurable lesions, an unequivocal increase in existing non-measurable lesion(s), or the appearance of unequivocal new lesion(s).

Time frame: From first confirmed response until disease progression (up to the primary data analysis at approximately 30 months)

Population: The HRD population consisted of all randomized participants with either tBRCA or non-tBRCA LOHhigh. Presented here are data from the monotherapy comparison arms (Arm B and Arm D). Here, Overall Number of Participants Analyzed is the number of participants evaluable for this outcome measure with measurable disease at baseline.

ArmMeasureValue (NUMBER)
Arm B: Rucaparib + PlaceboMonotherapy Arm B and Arm D: Duration of Response (DOR)16.7 months
Arm D: Placebo + PlaceboMonotherapy Arm B and Arm D: Duration of Response (DOR)5.5 months
Secondary

Monotherapy Arm B and Arm D: Objective Response Rate (ORR)

ORR was defined as the percentage of participants with a confirmed Complete Response (CR) or Partial Response (PR) as assessed by the Investigator per RECIST 1.1. CR: Disappearance of all target lesions. Any pathological lymph nodes (whether target or nontarget) must have reduction in short axis to \< 10 mm. PR: At least a 30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters.

Time frame: From randomization until disease progression (up to the primary data analysis at approximately 39 months)

Population: The HRD population consisted of all randomized participants with either tBRCA or non-tBRCA LOHhigh. Presented here are data from the monotherapy comparison arms (Arm B and Arm D). Here, Overall Number of Participants Analyzed is the number of participants evaluable for this outcome measure with measurable disease at baseline.

ArmMeasureValue (NUMBER)
Arm B: Rucaparib + PlaceboMonotherapy Arm B and Arm D: Objective Response Rate (ORR)58.8 percentage of participants
Arm D: Placebo + PlaceboMonotherapy Arm B and Arm D: Objective Response Rate (ORR)20.0 percentage of participants
Secondary

Monotherapy Arm B and Arm D: ORR

ORR was defined as the percentage of participants with CR or PR as assessed by the Investigator per RECIST 1.1. CR: Disappearance of all target lesions. Any pathological lymph nodes (whether target or nontarget) must have reduction in short axis to \< 10 mm. PR: At least a 30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters.

Time frame: From randomization until disease progression (up to the primary data analysis at approximately 39 months)

Population: The ITT population included all randomized participants. Presented here are data from the monotherapy comparison arms (Arm B and Arm D). Here, Overall Number of Participants Analyzed is the number of participants evaluable for this outcome measure with measurable disease at baseline.

ArmMeasureValue (NUMBER)
Arm B: Rucaparib + PlaceboMonotherapy Arm B and Arm D: ORR48.8 percentage of participants
Arm D: Placebo + PlaceboMonotherapy Arm B and Arm D: ORR9.1 percentage of participants
Secondary

Monotherapy Arm B and Arm D: OS

OS was defined as the number of days (measured in months) from the date of randomization to the date of death due to any cause.

Time frame: From randomization until death due to any cause (up to the primary data analysis at approximately 40 months)

Population: The ITT population included all randomized participants. Presented here are data from the monotherapy comparison arms (Arm B and Arm D).

ArmMeasureValue (MEDIAN)
Arm B: Rucaparib + PlaceboMonotherapy Arm B and Arm D: OS38.8 months
Arm D: Placebo + PlaceboMonotherapy Arm B and Arm D: OSNA months
Secondary

Monotherapy Arm B and Arm D: Overall Survival (OS)

OS was defined as the number of days (measured in months) from the date of randomization to the date of death due to any cause.

Time frame: From randomization until death due to any cause (up to the primary data analysis at approximately 36 months)

Population: The HRD population consisted of all randomized participants with either tBRCA or non-tBRCA LOHhigh. Presented here are data from the monotherapy comparison arms (Arm B and Arm D).

ArmMeasureValue (MEDIAN)
Arm B: Rucaparib + PlaceboMonotherapy Arm B and Arm D: Overall Survival (OS)NA months
Arm D: Placebo + PlaceboMonotherapy Arm B and Arm D: Overall Survival (OS)NA months

Source: ClinicalTrials.gov · Data processed: Feb 21, 2026