Skip to content

Olaparib Maintenance Monotherapy in Patients With BRCA Mutated Ovarian Cancer Following First Line Platinum Based Chemotherapy.

A Phase III, Randomised, Double Blind, Placebo Controlled, Multicentre Study of Olaparib Maintenance Monotherapy in Patients With BRCA Mutated Advanced (FIGO Stage III-IV) Ovarian Cancer Following First Line Platinum Based Chemotherapy.

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01844986
Acronym
SOLO-1
Enrollment
450
Registered
2013-05-03
Start date
2013-08-26
Completion date
2028-08-29
Last updated
2025-12-10

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

Conditions

Advanced Ovarian Cancer, BRCA Mutation, Complete Response, FIGO Stage III-IV, First Line Platinum Chemotherapy, Newly Diagnosed, Partial Response

Keywords

BRCA, Ovarian Cancer, Chemotherapy, PARP inhibitor, First Line, FIGO Stage III, FIGO Stage IV

Brief summary

Olaparib Monotherapy in Patients with BRCA Mutated Ovarian Cancer following First Line Platinum Based Chemotherapy.

Detailed description

A Phase III, Randomised, Double Blind, Placebo Controlled, Multicentre Study of Olaparib Maintenance Monotherapy in Patients with BRCA Mutated Advanced (FIGO Stage III-IV) Ovarian Cancer following First Line Platinum Based Chemotherapy.

Interventions

Olaparib/placebo tablets p.o 300mg twice daily for up to 2 years or until objective radiological disease progression as per RECIST as assessed by the Investigator. Patients with evidence of stable disease (or those who have progressed), may continue on treatment beyond 2 years, if in the patient's best interest. Dose reduction to 250mg and subsequently 200mg is permitted following confirmation of toxicity.

Sponsors

GOG Foundation
CollaboratorNETWORK
Myriad Genetic Laboratories, Inc.
CollaboratorINDUSTRY
Merck Sharp & Dohme LLC
CollaboratorINDUSTRY
AstraZeneca
Lead SponsorINDUSTRY

Study design

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

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 130 Years
Healthy volunteers
No

Inclusion criteria

* Female patients with newly diagnosed, histologically confirmed, high risk advanced (FIGO stage III - IV) BRCA mutated high grade serous or high grade endometrioid ovarian cancer, primary peritoneal cancer and / or fallopian - tube cancer who have completed first line platinum based chemotherapy (intravenous or intraperitoneal). * Stage III patients must have had one attempt at optimal debulking surgery (upfront or interval debulking). Stage IV patients must have had either a biopsy and/or upfront or interval debulking surgery. * Documented mutation in BRCA1 or BRCA2 that is predicted to be deleterious or suspected deleterious (known or predicted to be detrimental/lead to loss of function). * Patients who have completed first line platinum (e.g. carboplatin or cisplatin), containing therapy (intravenous or intraperitoneal) prior to randomisation: * Patients must have, in the opinion of the investigator, clinical complete response or partial response and have no clinical evidence of disease progression on the post treatment scan or rising CA-125 level, following completion of this chemotherapy course. Patients with stable disease on the post-treatment scan at completion of first line platinum-containing therapy are not eligible for the study. * Patients must be randomized within 8 weeks of their last dose of chemotherapy

Exclusion criteria

* BRCA1 and/or BRCA2 mutations that are considered to be non detrimental (e.g. Variants of uncertain clinical significance or Variant of unknown significance or Variant, favor polymorphism or benign polymorphism etc). * Patients with early stage disease (FIGO Stage I, IIA, IIB or IIC) * Stable disease or progressive disease on the post-treatment scan or clinical evidence of progression at the end of the patient's first line chemotherapy treatment. * Patients where more than one debulking surgery has been performed before randomisation to the study. (Patients who, at the time of diagnosis, are deemed to be unresectable and undergo only a biopsy or oophorectomy but then go on to receive chemotherapy and interval debulking surgery are eligible). * Patients who have previously been diagnosed and treated for earlier stage ovarian, fallopian tube or primary peritoneal cancer. * Patients who have previously received chemotherapy for any abdominal or pelvic tumour, including treatment for prior diagnosis at an earlier stage for their ovarian, fallopian tube or primary peritoneal cancer. (Patients who have received prior adjuvant chemotherapy for localised breast cancer may be eligible, provided that it was completed more than three years prior to registration, and that the patient remains free of recurrent or metastatic disease). * Patients with synchronous primary endometrial cancer unless both of the following criteria are met: 1) stage \<2 2) less than 60 years old at the time of diagnosis of endometrial cancer with stage IA or IB grade 1 or 2, or stage IA grade 3 endometrioid adenocarcinoma OR ≥ 60 years old at the time of diagnosis of endometrial cancer with Stage IA grade 1 or 2 endometrioid adenocarcinoma. Patients with serous or clear cell adenocarcinoma or carcinosarcoma of the endometrium are not eligible.

Design outcomes

Primary

MeasureTime frameDescription
Progression Free Survival (PFS) Using Investigator Assessment According to Modified Response Evaluation Criteria in Solid Tumours (RECIST 1.1)Radiologic scans performed at baseline then every 12 weeks up to 156 weeks, then every 24 weeks thereafter until objective radiological disease progression. DCO: 17 May 2018To determine the efficacy by progression free survival (PFS) using investigator assessment according to modified Response Evaluation Criteria in Solid Tumours (RECIST 1.1) of olaparib maintenance monotherapy compared to placebo in BRCA mutated high risk advanced ovarian cancer patients who are in clinical complete response or partial response following first line platinum based chemotherapy.

Secondary

MeasureTime frameDescription
Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time to Earliest Progression by RECIST or Cancer Antigen (CA-125) or DeathCA-125 performed at baseline + every 4 weeks. Radiologic scans performed at baseline + every 12 weeks up to 156 weeks, then every 24 weeks until objective radiological disease progression. DCO:17May2018To determine the efficacy of olaparib maintenance monotherapy compared to placebo in BRCA mutated high risk advanced ovarian cancer patients who are in clinical complete response or partial response following first line platinum based chemotherapy by assessment of time to earliest progression by RECIST or Cancer Antigen-125 (CA-125) or death
Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time From Randomization to Second ProgressionFollowing first progression disease then assessed per local practice every 12 weeks until second progression.To determine the efficacy of olaparib maintenance monotherapy compared to placebo in BRCA mutated high risk advanced ovarian cancer patients who are in clinical complete response or partial response following first line platinum based chemotherapy by assessment of time from randomisation to second progression (PFS2)
Change From Baseline in Health-Related Quality of Life (HRQoL) as Assessed by the the Trial Outcome Index (TOI) of the Functional Assessment of Cancer Therapy - Ovarian (FACT-O)Questionnaires will be given to the patient at baseline, at Day 29 and then every 12 weeks for 156 weeks, then every 24 weeks or until the data cut off for the PFS analysis, change in TOI over 24 months reportedTo compare the effects of olaparib maintenance monotherapy compared to placebo on Health-related Quality of Life (HRQoL) as assessed by the trial outcome index (TOI) of the Functional Assessment of Cancer Therapy - Ovarian (FACT-O) in BRCA mutated high risk advanced ovarian cancer patients who are in clinical complete response or partial response following first line platinum based chemotherapy. The TOI ranges from 0-100 and a higher score indicates a higher HRQoL.
Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Overall SurvivalAssessed every 4 weeks until treatment discontinues (up to a max of 156 weeks), then as per protocol. Analysis performed with DCO: 17May2018. Further analyses will be performed at 7 years (descriptive), after 206 events and after 60% maturity.To determine the efficacy of olaparib maintenance monotherapy compared to placebo in BRCA mutated high risk advanced ovarian cancer patients who are in clinical complete response or partial response following first line platinum based chemotherapy by assessment of overall survival (OS). Reports results of a pre-specified interim analysis; results for final OS analysis (235 OS events) anticipated 2029.
Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time to Second Subsequent Therapy or Death (TSST)Assessed every 12 weeks following treatment discontinuation. Analysis performed with DCO: 17May2018. Further analyses will be performed at 7 years (descriptive), after 206 events and after 60% maturity.To determine the efficacy of olaparib maintenance monotherapy compared to placebo in BRCA mutated high risk advanced ovarian cancer patients who are in clinical complete response or partial response following first line platinum based chemotherapy by assessment of time from randomisation to second subsequent therapy or death (TSST). Reports results of a pre-specified interim analysis; final analysis results will later be added at time of final OS analysis (anticipated 2029).
Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time From Randomization to Study Treatment Discontinuation or Death (TDT)Time elapsed from randomization to study treatment discontinuation or death. Analysis performed with DCO: 17May2018. Further analyses will be performed at 7 years (descriptive), after 206 events and after 60% maturity.To determine the efficacy of olaparib maintenance monotherapy compared to placebo in BRCA mutated high risk advanced ovarian cancer patients who are in clinical complete response or partial response following first line platinum based chemotherapy by assessment of time from randomisation to study treatment discontinuation or death (TDT). Reports results of a pre-specified interim analysis; final analysis results will later be added at time of final OS analysis (anticipated 2029).
Efficacy in Patients With a Deleterious or Suspected Deleterious Variant in Either of the BRCA Genes by Assessment of PFSRadiologic scans performed at baseline then every 12 weeks for the first 156 weeks, then every 24 weeks thereafter, assessed until disease progression. Analysis of data assessed up to a maximum of 54 months.To assess efficacy of olaparib in patients identified as having a deleterious or suspected deleterious variant in either of the BRCA genes using variants identified with current and potential future BRCA mutation assays (gene sequencing and large rearrangement analysis)
Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time to First Subsequent Therapy or Death (TFST)Assessed every 12 weeks following treatment discontinuation. Analysis performed with DCO: 17May2018. Further analyses will be performed at 7 years (descriptive), after 206 events and after 60% maturity.To determine the efficacy of olaparib maintenance monotherapy compared to placebo in BRCA mutated high risk advanced ovarian cancer patients who are in clinical complete response or partial response following first line platinum based chemotherapy by assessment of time from randomisation to first subsequent therapy or death (TFST). Reports results of a pre-specified interim analysis; final analysis results will later be added at time of final OS analysis (anticipated 2029).

Countries

Australia, Brazil, Canada, China, France, Israel, Italy, Japan, Netherlands, Poland, Russia, South Korea, Spain, United Kingdom, United States

Participant flow

Recruitment details

Global Cohort: 391 randomised. First/Last patient randomised 03Sep2013/06Mar2015. China Cohort: 64 randomised. First/Last patient randomised 09Jan2015/22Mar2016. A total of 450 patients randomised (386 global cohort only, 64 China cohort (of which 5 included in global cohort)). Global Cohort used for hypotheses testing of study.

Pre-assignment details

It was planned that approximately 344 women in the Global Cohort, and 53 women in the China Cohort, with BRCA mutated ovarian cancer patients who are in clinical complete or partial response following first line platinum based chemotherapy were to receive olaparib 300 mg bd or matching placebo in a 2:1 ratio.

Participants by arm

ArmCount
Olaparib 300mg Tablets (Global Cohort & China Cohort)
Taken orally twice daily
300
Placebo Tablets (Global Cohort & China Cohort)
Taken orally twice daily
150
Total450

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall Study (China Cohort)Death106
Overall Study (China Cohort)Withdrawal by Subject10
Overall Study (Global Cohort)Death5526
Overall Study (Global Cohort)Severe non-compliance to protocol10
Overall Study (Global Cohort)Withdrawal by Subject2114

Baseline characteristics

CharacteristicOlaparib 300mg Tablets (Global Cohort & China Cohort)TotalPlacebo Tablets (Global Cohort & China Cohort)
Age, Continuous
China Cohort
50.7 Years
STANDARD_DEVIATION 7.27
51.0 Years
STANDARD_DEVIATION 7.44
51.5 Years
STANDARD_DEVIATION 7.95
Age, Continuous
Global Cohort
53.6 Years
STANDARD_DEVIATION 9.38
53.5 Years
STANDARD_DEVIATION 9.51
53.4 Years
STANDARD_DEVIATION 9.79
Race (NIH/OMB)
China Cohort
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
China Cohort
Asian
44 Participants64 Participants20 Participants
Race (NIH/OMB)
China Cohort
Black or African American
0 Participants0 Participants0 Participants
Race (NIH/OMB)
China Cohort
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
China Cohort
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
China Cohort
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
China Cohort
White
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Global Cohort
American Indian or Alaska Native
0 Participants1 Participants1 Participants
Race (NIH/OMB)
Global Cohort
Asian
39 Participants59 Participants20 Participants
Race (NIH/OMB)
Global Cohort
Black or African American
2 Participants4 Participants2 Participants
Race (NIH/OMB)
Global Cohort
More than one race
1 Participants1 Participants0 Participants
Race (NIH/OMB)
Global Cohort
Native Hawaiian or Other Pacific Islander
1 Participants2 Participants1 Participants
Race (NIH/OMB)
Global Cohort
Unknown or Not Reported
3 Participants4 Participants1 Participants
Race (NIH/OMB)
Global Cohort
White
214 Participants320 Participants106 Participants
Response to previous platinum chemotherapy (as randomised)
China Cohort
Complete Response
37 Participants55 Participants18 Participants
Response to previous platinum chemotherapy (as randomised)
China Cohort
Partial Response
7 Participants9 Participants2 Participants
Response to previous platinum chemotherapy (as randomised)
Global Cohort
Complete Response
213 Participants320 Participants107 Participants
Response to previous platinum chemotherapy (as randomised)
Global Cohort
Partial Response
47 Participants71 Participants24 Participants
Sex: Female, Male
China Cohort
Female
44 Participants64 Participants20 Participants
Sex: Female, Male
China Cohort
Male
0 Participants0 Participants0 Participants
Sex: Female, Male
Global Cohort
Female
260 Participants391 Participants131 Participants
Sex: Female, Male
Global Cohort
Male
0 Participants0 Participants0 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
55 / 26027 / 13110 / 446 / 20
other
Total, other adverse events
253 / 260117 / 13043 / 4418 / 20
serious
Total, serious adverse events
54 / 26016 / 13013 / 443 / 20

Outcome results

Primary

Progression Free Survival (PFS) Using Investigator Assessment According to Modified Response Evaluation Criteria in Solid Tumours (RECIST 1.1)

To determine the efficacy by progression free survival (PFS) using investigator assessment according to modified Response Evaluation Criteria in Solid Tumours (RECIST 1.1) of olaparib maintenance monotherapy compared to placebo in BRCA mutated high risk advanced ovarian cancer patients who are in clinical complete response or partial response following first line platinum based chemotherapy.

Time frame: Radiologic scans performed at baseline then every 12 weeks up to 156 weeks, then every 24 weeks thereafter until objective radiological disease progression. DCO: 17 May 2018

Population: Global Full Analysis Set (FAS) consisting of all patients randomized as part of global recruitment (including 5 patients randomized in China) \[Primary analysis\] China Full Analysis Set (FAS) consisting of all patients randomized at sites in China (including 5 patients also included in the Global Cohort).

ArmMeasureValue (MEDIAN)
Olaparib 300mg Tablets (Global Cohort)Progression Free Survival (PFS) Using Investigator Assessment According to Modified Response Evaluation Criteria in Solid Tumours (RECIST 1.1)NA Months
Placebo Tablets (Global Cohort)Progression Free Survival (PFS) Using Investigator Assessment According to Modified Response Evaluation Criteria in Solid Tumours (RECIST 1.1)13.8 Months
Olaparib 300mg Tablets (China Cohort)Progression Free Survival (PFS) Using Investigator Assessment According to Modified Response Evaluation Criteria in Solid Tumours (RECIST 1.1)NA Months
Placebo Tablets (China Cohort)Progression Free Survival (PFS) Using Investigator Assessment According to Modified Response Evaluation Criteria in Solid Tumours (RECIST 1.1)9.3 Months
p-value: <0.000195% CI: [0.23, 0.41]Regression, Cox
95% CI: [0.23, 0.97]Regression, Cox
Secondary

Change From Baseline in Health-Related Quality of Life (HRQoL) as Assessed by the the Trial Outcome Index (TOI) of the Functional Assessment of Cancer Therapy - Ovarian (FACT-O)

To compare the effects of olaparib maintenance monotherapy compared to placebo on Health-related Quality of Life (HRQoL) as assessed by the trial outcome index (TOI) of the Functional Assessment of Cancer Therapy - Ovarian (FACT-O) in BRCA mutated high risk advanced ovarian cancer patients who are in clinical complete response or partial response following first line platinum based chemotherapy. The TOI ranges from 0-100 and a higher score indicates a higher HRQoL.

Time frame: Questionnaires will be given to the patient at baseline, at Day 29 and then every 12 weeks for 156 weeks, then every 24 weeks or until the data cut off for the PFS analysis, change in TOI over 24 months reported

Population: Global Full Analysis Set (FAS) consisting of all patients randomized as part of global recruitment (including 5 patients randomized in China) with a baseline and post baseline TOI scores available.

ArmMeasureValue (LEAST_SQUARES_MEAN)
Olaparib 300mg Tablets (Global Cohort)Change From Baseline in Health-Related Quality of Life (HRQoL) as Assessed by the the Trial Outcome Index (TOI) of the Functional Assessment of Cancer Therapy - Ovarian (FACT-O)0.30 Scores on a scale
Placebo Tablets (Global Cohort)Change From Baseline in Health-Related Quality of Life (HRQoL) as Assessed by the the Trial Outcome Index (TOI) of the Functional Assessment of Cancer Therapy - Ovarian (FACT-O)3.30 Scores on a scale
p-value: 0.00195% CI: [-4.779, -1.216]Mixed Models Analysis
Secondary

Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Overall Survival

To determine the efficacy of olaparib maintenance monotherapy compared to placebo in BRCA mutated high risk advanced ovarian cancer patients who are in clinical complete response or partial response following first line platinum based chemotherapy by assessment of overall survival (OS). Reports results of a pre-specified interim analysis; results for final OS analysis (235 OS events) anticipated 2029.

Time frame: Assessed every 4 weeks until treatment discontinues (up to a max of 156 weeks), then as per protocol. Analysis performed with DCO: 17May2018. Further analyses will be performed at 7 years (descriptive), after 206 events and after 60% maturity.

Population: Global Full Analysis Set (FAS) consisting of all patients randomized as part of global recruitment (including 5 patients randomized in China) \[Primary analysis\] China Full Analysis Set (FAS) consisting of all patients randomized at sites in China (including 5 patients also included in the Global Cohort).

ArmMeasureValue (MEDIAN)
Olaparib 300mg Tablets (Global Cohort)Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Overall SurvivalNA Months
Placebo Tablets (Global Cohort)Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Overall SurvivalNA Months
Olaparib 300mg Tablets (China Cohort)Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Overall SurvivalNA Months
Placebo Tablets (China Cohort)Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Overall SurvivalNA Months
p-value: 0.890395% CI: [0.6, 1.53]Regression, Cox
95% CI: [0.29, 2.28]Regression, Cox
Secondary

Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time From Randomization to Second Progression

To determine the efficacy of olaparib maintenance monotherapy compared to placebo in BRCA mutated high risk advanced ovarian cancer patients who are in clinical complete response or partial response following first line platinum based chemotherapy by assessment of time from randomisation to second progression (PFS2)

Time frame: Following first progression disease then assessed per local practice every 12 weeks until second progression.

Population: Global Full Analysis Set (FAS) consisting of all patients randomized as part of global recruitment (including 5 patients randomized in China) \[Primary analysis\] China Full Analysis Set (FAS) consisting of all patients randomized at sites in China (including 5 patients also included in the Global Cohort).

ArmMeasureValue (MEDIAN)
Olaparib 300mg Tablets (Global Cohort)Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time From Randomization to Second ProgressionNA Months
Placebo Tablets (Global Cohort)Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time From Randomization to Second Progression41.9 Months
Olaparib 300mg Tablets (China Cohort)Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time From Randomization to Second ProgressionNA Months
Placebo Tablets (China Cohort)Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time From Randomization to Second ProgressionNA Months
p-value: 0.000295% CI: [0.35, 0.72]Regression, Cox
95% CI: [0.23, 1.35]Regression, Cox
Secondary

Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time From Randomization to Study Treatment Discontinuation or Death (TDT)

To determine the efficacy of olaparib maintenance monotherapy compared to placebo in BRCA mutated high risk advanced ovarian cancer patients who are in clinical complete response or partial response following first line platinum based chemotherapy by assessment of time from randomisation to study treatment discontinuation or death (TDT). Reports results of a pre-specified interim analysis; final analysis results will later be added at time of final OS analysis (anticipated 2029).

Time frame: Time elapsed from randomization to study treatment discontinuation or death. Analysis performed with DCO: 17May2018. Further analyses will be performed at 7 years (descriptive), after 206 events and after 60% maturity.

Population: Global Full Analysis Set (FAS) consisting of all patients randomized as part of global recruitment (including 5 patients randomized in China) \[Primary analysis\] China Full Analysis Set (FAS) consisting of all patients randomized at sites in China (including 5 patients also included in the Global Cohort).

ArmMeasureValue (MEDIAN)
Olaparib 300mg Tablets (Global Cohort)Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time From Randomization to Study Treatment Discontinuation or Death (TDT)24.6 Months
Placebo Tablets (Global Cohort)Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time From Randomization to Study Treatment Discontinuation or Death (TDT)13.8 Months
Olaparib 300mg Tablets (China Cohort)Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time From Randomization to Study Treatment Discontinuation or Death (TDT)24.8 Months
Placebo Tablets (China Cohort)Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time From Randomization to Study Treatment Discontinuation or Death (TDT)8.6 Months
p-value: <0.000195% CI: [0.51, 0.79]Regression, Cox
95% CI: [0.47, 1.42]Regression, Cox
Secondary

Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time to Earliest Progression by RECIST or Cancer Antigen (CA-125) or Death

To determine the efficacy of olaparib maintenance monotherapy compared to placebo in BRCA mutated high risk advanced ovarian cancer patients who are in clinical complete response or partial response following first line platinum based chemotherapy by assessment of time to earliest progression by RECIST or Cancer Antigen-125 (CA-125) or death

Time frame: CA-125 performed at baseline + every 4 weeks. Radiologic scans performed at baseline + every 12 weeks up to 156 weeks, then every 24 weeks until objective radiological disease progression. DCO:17May2018

Population: Global Full Analysis Set (FAS) consisting of all patients randomized as part of global recruitment (including 5 patients randomized in China) \[Primary analysis\] China Full Analysis Set (FAS) consisting of all patients randomized at sites in China (including 5 patients also included in the Global Cohort).

ArmMeasureValue (MEDIAN)
Olaparib 300mg Tablets (Global Cohort)Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time to Earliest Progression by RECIST or Cancer Antigen (CA-125) or DeathNA Months
Placebo Tablets (Global Cohort)Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time to Earliest Progression by RECIST or Cancer Antigen (CA-125) or Death12.0 Months
Olaparib 300mg Tablets (China Cohort)Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time to Earliest Progression by RECIST or Cancer Antigen (CA-125) or DeathNA Months
Placebo Tablets (China Cohort)Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time to Earliest Progression by RECIST or Cancer Antigen (CA-125) or Death8.9 Months
p-value: <0.000195% CI: [0.23, 0.4]Regression, Cox
95% CI: [0.23, 0.99]Regression, Cox
Secondary

Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time to First Subsequent Therapy or Death (TFST)

To determine the efficacy of olaparib maintenance monotherapy compared to placebo in BRCA mutated high risk advanced ovarian cancer patients who are in clinical complete response or partial response following first line platinum based chemotherapy by assessment of time from randomisation to first subsequent therapy or death (TFST). Reports results of a pre-specified interim analysis; final analysis results will later be added at time of final OS analysis (anticipated 2029).

Time frame: Assessed every 12 weeks following treatment discontinuation. Analysis performed with DCO: 17May2018. Further analyses will be performed at 7 years (descriptive), after 206 events and after 60% maturity.

Population: Global Full Analysis Set (FAS) consisting of all patients randomized as part of global recruitment (including 5 patients randomized in China) \[Primary analysis\] China Full Analysis Set (FAS) consisting of all patients randomized at sites in China (including 5 patients also included in the Global Cohort).

ArmMeasureValue (MEDIAN)
Olaparib 300mg Tablets (Global Cohort)Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time to First Subsequent Therapy or Death (TFST)51.8 Months
Placebo Tablets (Global Cohort)Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time to First Subsequent Therapy or Death (TFST)15.1 Months
Olaparib 300mg Tablets (China Cohort)Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time to First Subsequent Therapy or Death (TFST)34.3 Months
Placebo Tablets (China Cohort)Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time to First Subsequent Therapy or Death (TFST)10.3 Months
p-value: <0.000195% CI: [0.22, 0.4]Regression, Cox
95% CI: [0.29, 1.23]Regression, Cox
Secondary

Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time to Second Subsequent Therapy or Death (TSST)

To determine the efficacy of olaparib maintenance monotherapy compared to placebo in BRCA mutated high risk advanced ovarian cancer patients who are in clinical complete response or partial response following first line platinum based chemotherapy by assessment of time from randomisation to second subsequent therapy or death (TSST). Reports results of a pre-specified interim analysis; final analysis results will later be added at time of final OS analysis (anticipated 2029).

Time frame: Assessed every 12 weeks following treatment discontinuation. Analysis performed with DCO: 17May2018. Further analyses will be performed at 7 years (descriptive), after 206 events and after 60% maturity.

Population: Global Full Analysis Set (FAS) consisting of all patients randomized as part of global recruitment (including 5 patients randomized in China) \[Primary analysis\] China Full Analysis Set (FAS) consisting of all patients randomized at sites in China (including 5 patients also included in the Global Cohort).

ArmMeasureValue (MEDIAN)
Olaparib 300mg Tablets (Global Cohort)Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time to Second Subsequent Therapy or Death (TSST)NA Months
Placebo Tablets (Global Cohort)Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time to Second Subsequent Therapy or Death (TSST)40.7 Months
Olaparib 300mg Tablets (China Cohort)Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time to Second Subsequent Therapy or Death (TSST)NA Months
Placebo Tablets (China Cohort)Efficacy in Patients Following First Line Platinum Based Chemotherapy by Assessment of Time to Second Subsequent Therapy or Death (TSST)27.4 Months
p-value: <0.000195% CI: [0.32, 0.63]Regression, Cox
95% CI: [0.25, 1.26]Regression, Cox
Secondary

Efficacy in Patients With a Deleterious or Suspected Deleterious Variant in Either of the BRCA Genes by Assessment of PFS

To assess efficacy of olaparib in patients identified as having a deleterious or suspected deleterious variant in either of the BRCA genes using variants identified with current and potential future BRCA mutation assays (gene sequencing and large rearrangement analysis)

Time frame: Radiologic scans performed at baseline then every 12 weeks for the first 156 weeks, then every 24 weeks thereafter, assessed until disease progression. Analysis of data assessed up to a maximum of 54 months.

Population: Global Full Analysis Set (FAS) consisting of all patients randomized as part of global recruitment (including 5 patients randomized in China) and confirmed as Myriad gBRCAm.

ArmMeasureValue (MEDIAN)
Olaparib 300mg Tablets (Global Cohort)Efficacy in Patients With a Deleterious or Suspected Deleterious Variant in Either of the BRCA Genes by Assessment of PFSNA Months
Placebo Tablets (Global Cohort)Efficacy in Patients With a Deleterious or Suspected Deleterious Variant in Either of the BRCA Genes by Assessment of PFS13.8 Months
p-value: <0.000195% CI: [0.22, 0.4]Regression, Cox

Source: ClinicalTrials.gov · Data processed: Mar 11, 2026