ClinicalTrials.gg
Active, not recruitingNCT03330847Updated Oct 14, 2026Results posted

To Assess Safety and Efficacy of Agents Targeting DNA Damage Repair With Olaparib Versus Olaparib Monotherapy.

A Phase 2 interventional study of Olaparib Continuous (28-Day cycle) 300 mg BD. and Ceralasertib 160 mg OD + olaparib continuous 300 mg BD (28-day cycle). in Metastatic Triple Negative Breast Cancer, sponsored by AstraZeneca. Active, not recruiting at 141 sites in 15 countries. Open to participants aged 18 Years to 130 Years. Per ClinicalTrials.gov, last updated 2026-10-14.

Sponsored by AstraZeneca · Phase 2, Interventional, and Treatment

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Phase
Phase 2
Study type
Interventional
Enrollment
273
Allocation
Randomized
Ages
18 Years to 130 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-14

Among 15 studies in Triple Negative Breast Neoplasms by AstraZeneca — 1 open to participants now, 6 under way, 1 of them phase 3. Triple Negative Breast Neoplasms · AstraZeneca.

Enrollment
2nd of 15
273 · median 99
Started
2018
with 1 other
Phase 2
3 of 15
none open now
Registered
8th of 15
by date

Among the 15 studies in Triple Negative Breast Neoplasms by AstraZeneca, this one is the 2nd largest by enrollment, is one of 2 that started in 2018, is one of 3 in phase 2, and was the 8th registered.

Triple Negative Breast Neoplasms

1,219 studies on the registry are indexed under Triple Negative Breast Neoplasms; 445 are open to participants now.

Browse Triple Negative Breast Neoplasms studies →

Open to participants now

1 of the 15 studies in Triple Negative Breast Neoplasms by AstraZeneca is open now, in 4 countries. Recruiting first, the newest first:

By country, each count listing its studies:

Who these studies take

Of the 331 Triple Negative Breast Neoplasms studies recruiting now, 231 (70%) set no upper age limit and 85 (26%) stop at 75 or younger; 12 take children under 18; 6 take healthy volunteers.

This study: 18 Years to 130 Years · all sexes · no healthy volunteers.

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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 15 studies in Triple Negative Breast Neoplasms by AstraZeneca, or all of them as a file.
02

Study summary

This study is to assess the efficacy and safety of olaparib monotherapy versus olaparib in combination with an inhibitor of ATR (Ataxia-Telangiectasia Mutated (ATM) and Rad3-related protein kinase (Ceralasertib [AZD6738]) and olaparib monotherapy versus olaparib in combination with an inhibitor of WEE1 (adavosertib [AZD1775]) in second or third line setting in patients with Triple-negative breast cancer (TNBC) prospectively stratified by presence/absence of qualifying tumour mutation in genes involved in the homologous recombination repair (HRR) pathway. Treatment arms are olaparib monotherapy, olaparib+ Ceralasertib and olaparib+adavosertib. The study subject population will be divided into Stratum A, Stratum B, and Stratum C. Due to the different schedules of administration of each of the treatment options as well as their different toxicity profiles, the study is not blinded. Study has two stage consent process- stage 1 consent (molecular screening for HRR defects) and stage 2 consent (main study). Patients with TNBC and with known qualifying BRCAm, non BRCAm HRRm and non HRRm status will be offered the option of consenting to the main part of the study within the 28-day screening period. Following the ISRC meeting on 17 April 2019 a recommendation was made to close the adavosertib+olaparib treatment arm across all biomarker strata. Patients receiving treatment with adavosertib+olaparib treatment were offered the opportunity to continue treatment on olaparib monotherapy at the approved dose (300 mg bd). Following the closure of this arm the total number of patients randomised will be lower (approximately 350 patients). Approximately 300 patients will be randomised (using randomisation ratio 1:1) to 2 ongoing treatment arms plus an additional 47 patients to a 3rd arm (olaparib+adavosertib) prior to the arm being discontinued.

Read the detailed description

This is a prospective, open label, randomised, multi-centre Phase 2 study that will assess the efficacy and safety of olaparib monotherapy versus olaparib in combination with an inhibitor of ATR (Ceralasertib) and olaparib monotherapy versus olaparib in combination with an inhibitor of WEE1 (adavosertib) in second or third line setting in patients with TNBC prospectively stratified by presence/absence of qualifying tumour mutation in genes involved in the HRR pathway.

Eligible patients will be randomised by a ratio 1:1:1 to treatment Arm 1: olaparib continuous in a 28-day cycle, Arm 2: Ceralasertib Days 1-7 with olaparib continuous in a 28-day cycle or Arm 3: adavosertib Days 1-3 and 8-10 with olaparib continuous in a 21-day cycle. Following the ISRC meeting on 17 April 2019 a recommendation was made to close the adavosertib+olaparib treatment arm across all biomarker strata. Following closure of this arm the randomisation ratio will be 1:1 to olaparib monotherapy or Ceralasertib+olaparib. Patients who were receiving treatment with adavosertib+olaparib treatment were offered the opportunity to continue treatment on olaparib monotherapy at the approved dose (300 mg bd).

The study subject population will be divided into Stratum A (patients with mutations in BRCA1 or BRCA2 (Breast cancer susceptible gene mutation (BRCAm)), Stratum B (patients with mutations in any of the other genes involved in the HRR pathway and no mutation in BRCA1 and no mutation in BRCA2), and Stratum C (patients with no detected tumour mutations in any of the HRR genes). Within each stratum A, B and C, there will be further stratification by whether the patient received prior platinum-based therapy.

In the olaparib monotherapy treatment arm as well as in the Ceralasertib+olaparib treatment arm, patients will be administered olaparib bd at 300 mg continuously. Two (2) 150 mg olaparib tablets will be taken at the same time each day, approximately 12 hours apart with one glass of water (approximately 250 mL). In the adavosertib+olaparib treatment arm, patients will be given olaparib 200 mg bd (2 x 100 mg tablets twice a day) and adavosertib 150 mg bd from Day 1 to Day 3 (inclusive) and Day 8 to Day 10 (inclusive) of every 21-day cycle. Ceralasertib will be supplied as 20 mg, 80 mg, or 100 mg film coated tablets. Patients will be administered Ceralasertib od at 160 mg from Day 1 to Day 7 (inclusive) of every 28-day cycle. A total of 160 mg of Ceralasertib tablets will be taken at the same time on each day of dosing with approximately 250 mL of water. Adavosertib will be supplied as capsules containing 25 mg, 50 mg, 75 mg, 100 mg, or 200 mg of drug substance. Adavosertib will be taken with approximately 250 mL of water approximately 2 hours before or 2 hours after food. Olaparib, Ceralasertib and adavosertib will be provided by AstraZeneca.

Primary outcome measures (progression free survival [PFS]) will be analysed for the 3 patient populations BRCAm, Non BRCAm HRRm (Homologous Recombination Repair gene mutation) and Non HRRm. Secondary outcome measures will be analysed in 2 patient populations HRRm and All for PFS, Objective response rate (ORR) and overall survival (OS) will be analysed in all 5 patient populations. DoR, and tumour change will be analysed in BRCAm, Non BRCAm HRRm, and Non HRRm patient populations. Tumour and germline mutation status will be analysed only in the all patient population. PK outcome measures will be analysed only in the all patient population. Blinded Independent Central Review (BICR) of radiological imaging data will be carried out using RECIST version 1.1 and Investigator assessments will also be analysed for sensitivity purposes.

03

Conditions studied

  • Metastatic Triple Negative Breast Cancer

Keywords

  • Germline BRCA mutation
  • Human epidermal growth factor receptor 2
  • Olaparib
  • Homologous Recombinant Repair (HRR)-related Genes
04

Who can participate

Ages eligible
18 Years to 130 Years
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

Pertinent Inclusion criteria:

  1. prior to any study specific procedures.
  2. Male or female ≥18 years of age.
  3. Progressive cancer at the time of study entry.
  4. or cytologically confirmed TNBC at initial diagnosis with evidence of disease and negative as per ASCO-CAP HER2 guideline recommendations 2013.
  5. Patients must have received at least 1 and no more than 2 for metastatic disease with an anthracycline (eg, doxorubicin, epirubicin) and/or a taxane (eg, paclitaxel, docetaxel) unless , in either the , adjuvant or metastatic setting.
  6. Confirmed presence of qualifying HRR mutation or absence of any HRR mutation in tumour tissue by the Lynparza HRR assay.
  7. At least one that can be accurately assessed at baseline by computed tomography (CT) (magnetic resonance imaging [MRI] where CT is contraindicated) and is suitable for repeated assessment as per 1.1.
  8. Patients must have normal organ and bone marrow function measured within 28 days prior to randomization (defined in the protocol).
  9. PS 0-1 within 28 days of randomisation.
  10. or evidence of non-childbearing status for women of ( restrictions apply to participants and their partners).

13. Patient is willing to comply with the protocol requirements. 14. of ≥16 weeks.

Pertinent Exclusion criteria:

  1. Cytotoxic chemotherapy, hormonal or non hormonal targeted therapy within 21 days of Cycle 1 Day 1 is not permitted. Palliative radiotherapy must have been completed 21 or more days before Cycle 1 Day 1. The patient can receive a stable dose of bisphosphonates or denosumab for bone metastases, before and during the study as long as these were started at least 5 days prior to study treatment.
  2. More than 2 prior lines of cytotoxic chemotherapy for metastatic disease (prior treatments with hormonal, non-hormonal, biologics or the combination of an aromatase inhibitor and everolimus are not counted as a prior line of therapy).
  3. Previous randomisation in the present study.
  4. Previous treatment with a PARP inhibitor (including olaparib) or other DDR inhibitor (unless less than 3 weeks duration and at least 12 months has elapsed between the last dose and randomization).
  5. Exposure to a small molecule IP within 30 days or 5 half-lives (whichever is longer) prior to randomisation. The minimum for immunotherapy shall be 42 days.
  6. Patients with second primary cancer (exceptions defined in the protocol).
  7. Mean resting corrected using the Fridericia formula (QTcF) >470 msec/female patients and >450 msec for male patients (as calculated per institutional standards) obtained from 3 ECGs performed 2-5 minutes apart at study entry, or congenital long QT syndrome.
  8. Any of the following cardiac diseases currently or within the last 6 months: unstable angina pectoris, congestive heart failure ≥ Class 2 as defined by the , acute myocardial infarction, conduction abnormality not controlled with pacemaker or medication (patients with a conduction abnormality controlled with pacemaker or medication at the time of screening are eligible), significant ventricular or supraventricular arrhythmias (patients with chronic rate-controlled atrial fibrillation in the absence of other cardiac abnormalities are eligible).
  9. Concomitant use of known strong or moderate cytochrome P (CYP) 3A inhibitors, strong or moderate inducers, or sensitive CYP3A4 substrates or CYp3A4 substrates with a narrow therapeutic index (No longer applicable from CSPv7.0).
  10. Persistent toxicities (≥ grade 2) caused by previous cancer therapy, excluding alopecia and CTCAE grade 2 peripheral neuropathy.
  11. Major surgery within 2 weeks of starting study treatment: patients must have recovered from any effects of any major surgery.
  12. patients, eg, (HIV).
  13. Patients with known active hepatitis (ie, or C).
  14. Patients considered a poor medical risk due to a serious, uncontrolled medical disorder, non malignant systemic disease or active, uncontrolled infection.
  15. Patients with symptomatic uncontrolled .
  16. Patients unable to swallow orally administered medication and patients with gastrointestinal disorders likely to interfere with absorption of the study medication.
  17. Patients with a known to olaparib, adavosertib, Ceralasertib, or any of the of the products.
  18. Pregnant or breast feeding women.
Terms in these criteria, in plain language(25)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Histologically or cytologically confirmed

The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).

Your pathology report is the document that shows this.

Metastases

Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.

HER2

HER2 is a protein, made from the ERBB2 gene, that drives the growth of some cancers. A study may look for a level of the protein, extra copies of the gene, or a particular change in it.

In breast cancer, protein tests are read as HER2-positive, HER2-low or HER2-negative; other cancers use their own rules. Check which test result the study requires.

Line of therapy

A line of therapy is one course of treatment, which may combine several drugs. First-line is the first course given; second-line follows when that stops working or is not tolerated.

“Two prior lines” means two courses that count separately under the study’s rules — not simply two drugs. Ask the study team if you are unsure how yours are counted.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

Adjuvant and neoadjuvant

Neoadjuvant treatment is given before the main treatment (usually surgery), often to shrink a tumour. Adjuvant treatment is given after it, to lower the chance of the cancer coming back.

Measurable disease

The amount of disease can be tracked with a defined measurement, so the study can see whether it shrinks or grows. It might be a tumour measured on a scan or, in some blood cancers such as myeloma, a marker measured in blood or urine.

The criteria or the study team say which measurement counts — having no tumour visible on a scan does not by itself rule you out.

RECIST

The standard rules for measuring tumours on CT or MRI scans, to tell whether a cancer is shrinking, stable or growing during treatment.

“Measurable disease per RECIST 1.1” usually means at least one tumour 10 mm or more at its longest on a CT scan, or a lymph node 15 mm or more across its short axis.

ECOG performance status

A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.

Postmenopausal

Periods have stopped for good: usually no period for 12 months in a row without another medical reason, sometimes confirmed by a blood test (FSH).

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Life expectancy

The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.

Washout period

A planned gap after a treatment, so that its effects can lessen before the study treatment or a study assessment. Ask the study team and the doctor who prescribed it before changing any medicine.

QT and QTc

On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.

The study may name a correction formula and a limit in milliseconds, often around 450–480.

NYHA class (heart failure)

The New York Heart Association’s four classes of how much heart failure limits physical activity.

I
No limits: ordinary activity causes no undue tiredness or breathlessness.
II
Slight limits: comfortable at rest, ordinary activity causes symptoms.
III
Marked limits: comfortable at rest, less than ordinary activity causes symptoms.
IV
Symptoms even at rest; any activity makes them worse.

Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.

CYP3A (CYP3A4) inhibitors and inducers

CYP3A is a group of enzymes, mainly CYP3A4, in the liver and gut that break down many medicines. Some medicines, supplements and foods (grapefruit, St John’s wort) slow them down or speed them up, which changes how much of a study drug stays in the body.

Studies list them so they can be avoided or switched; bring a list of everything you take, including supplements.

CTCAE grade

The US National Cancer Institute’s scale of how severe an adverse event is — any unwanted medical event during a study, such as a symptom, an illness or an abnormal test result, whether or not a treatment caused it. Whether it did is judged separately.

1
Mild.
2
Moderate.
3
Severe.
4
Life-threatening.
5
Death due to the event.

“Side effects of earlier treatment resolved to grade 1 or less” means they have settled to mild or gone.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Brain metastases

Cancer deposits in the brain from a cancer that started elsewhere in the body (CNS metastases include the spinal cord).

Studies differ: some leave out any brain metastases, some accept ones treated and stable for some weeks. Check what this study allows.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Excipients

The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
273 participants (actual)

Study arms

  • Active comparator
    Olaparib monotherapy

    All randomized patients will receive Olaparib monotherapy 300 mg twice daily (BD).

    Drug: Olaparib Continuous (28-Day cycle) 300 mg BD.

  • Active comparator
    Olaparib+Ceralasertib

    All randomized patients will receive Olaparib 300 mg twice daily+Ceralasertib 160 mg once daily (OD).

    Drug: Ceralasertib 160 mg OD + olaparib continuous 300 mg BD (28-day cycle).

  • Active comparator
    Olaparib+adavosertib

    All randomized patients will receive Olaparib 200 mg BD +adavosertib 150 mg BD. Following the discontinuation of adavosertib+olaparib treatment arm on 18 April 2019, patients receiving treatment with adavosertib+olaparib treatment were offered the opportunity to continue treatment on olaparib monotherapy at the approved dose (300 mg bd).

    Drug: Adavosertib 150 mg BD + olaparib 200 mg BD (21-day cycle).

Interventions

  • DrugOlaparib Continuous (28-Day cycle) 300 mg BD.

    Two (2) 150 mg olaparib tablets should be taken at the same time each day, approximately 12 hours apart with one glass of water (approximately 250 mL).

  • DrugCeralasertib 160 mg OD + olaparib continuous 300 mg BD (28-day cycle).

    Drug page: Ceralasertib

    Patients will be administered Ceralasertib OD at 160 mg from Day 1 to Day 7 (inclusive) of every 28-day cycle.

  • DrugAdavosertib 150 mg BD + olaparib 200 mg BD (21-day cycle).

    Drug page: Adavosertib

    Patients will be administered adavosertib BD at 150mg from Day 1 to Day 3 and Day 8 to Day 10.

This study also gives Olaparib. No intervention listed here names it: that was found by reading the record.

06

What researchers measure

Primary outcomes

  1. Progression-free Survival Per Stratum (BICR)

    Progression-free survival was defined as time from randomization until the date of objective disease progression or death, regardless of whether the patient withdrew from randomized therapy or received another anti-cancer therapy prior to progression. Progression was determined by Blinded independent central review (BICR) using Response Evaluation Criteria In Solid Tumours Version (RECIST 1.1). Patients who had not progressed or died at the time of analysis were censored at the time of the latest date of assessment from their last evaluable RECIST assessment. If patients had no evaluable visits or baseline data, the patient was censored at Study Day 1, unless death occurred within 17 weeks i.e., death within 17 weeks was relative to randomization. Here, the study patient population was stratified as follows: Breast cancer susceptible gene mutation (BRCAm) patients; non BRCAm homologous recombination repair gene mutation (HRRm) patients; non HRRm patients.

    Time frame: Until date of first documented progression or censoring date or date of death from any cause, whichever came first (assessed up to 32 months)

  2. Progression-free Survival Per Stratum (Sensitivity Analysis)

    Progression-free survival was defined as time from randomization until the date of objective disease progression or death, regardless of whether the patient withdrew from randomized therapy or received another anti-cancer therapy prior to progression. Progression was determined by the site Investigator. Patients who had not progressed or died at the time of analysis were censored at the time of the latest date of assessment from their last evaluable RECIST 1.1 assessment. If patients had no evaluable visits or baseline data, the patient was censored at Study Day 1, unless death occurred within 17 weeks i.e., death within 17 weeks was relative to randomization. Here, the study patient population was stratified as follows: BRCAm patients; non BRCAm HRRm patients; non HRRm patients.

    Time frame: Until date of first documented progression or censoring date or date of death from any cause, whichever came first (assessed up to 32 months)

Secondary outcomes

  1. Progression-free Survival (Per BICR)

    Progression-free survival was defined as time from randomization until the date of objective disease progression or death, regardless of whether the patient withdrew from randomized therapy or received another anti-cancer therapy prior to progression. Progression was determined by BICR using RECIST 1.1. Patients who had not progressed or died at the time of analysis were censored at the time of the latest date of assessment from their last evaluable RECIST assessment. If patients had no evaluable visits or baseline data, the patient was censored at Study Day 1, unless death occurred within 17 weeks i.e., death within 17 weeks was relative to randomization. Here, the study patient population was presented as follows: HRRm and all enrolled patients.

    Time frame: From randomization until date of first documented progression or censoring date or date of death from any cause, whichever came first (assessed up to 32 months)

  2. Number of Patients With Objective Response (Per BICR and Per Sensitivity Analysis)

    The objective response was defined as patients with at least one BICR assessed visit response of CR or PR. For sensitivity analysis, objective response was defined as the patients with at least one visit response of CR or PR based on Investigator data. These are unadjusted percentages of responders (100 \* number of responders / number of patients in full analysis set). The objective response was assessed per RECIST 1.1 guidelines for: measurable lesions (measured at baseline as ≥ 10 mm in the longest diameter (except lymph nodes which must have short axis ≥ 15 mm) using CT or MRI, non-measurable lesions (all other lesions, including small lesions (longest diameter \<10 mm or pathological lymph nodes with ≥10 to \<15mm short axis at baseline), based on target lesions \[TL\] (maximum of 5 measurable lesions (with a maximum of 2 lesions per organ), non-target lesions \[NTL\] (lesions (or sites of disease) not recorded as TL should be identified as NTL at baseline) and any new lesions.

    Time frame: From date of randomization until date of first documented progression or last evaluable assessment, or start of subsequent anti-cancer therapy (Whichever occurred first [assessed up to 32 months])

  3. Objective Response Rate (ORR) (Per BICR and Per Sensitivity Analysis)

    The ORR was defined using BICR data to define a visit response of CR or PR, with denominator defined as number of patients in FAS. For sensitivity analysis, ORR is defined as the percentage of patients with at least one investigator-assessed visit response of CR or PR, with denominator defined as number of patients in FAS. These are summarized using adjusted response rates, which are computed with a logistic regression including factors study treatment and prior platinum-based therapy (no, yes), i.e. these response rates are adjusted for prior platinum-based therapy, which is one of the randomisation stratification factors. The adjusted response rates have been presented as a percentage of patients.

    Time frame: From date of randomization until date of first documented progression or last evaluable assessment, or start of subsequent anti-cancer therapy (Whichever occurred first [assessed up to 32 months])

  4. Duration of Response (DoR) [Per BICR and Per Sensitivity Analysis]

    The DoR was defined as the time from the date of first documented response according to BICR data until date of documented progression according to BICR data or death in the absence of disease progression. For sensitivity analysis, DoR was defined as the time from the date of first documented response according to Investigator assessment until date of documented progression according to Investigator assessment or death in the absence of disease progression. Here, the median DoR and the 25th and 75th percentile of DoR are presented. The DoR from onset of response was calculated using Kaplan-Meier technique. Here, the study patient population was stratified as follows: BRCAm patients; non BRCAm HRRm patients; non HRRm patients.

    Time frame: From date of first documented response until date of first documented progression or last evaluable assessment (assessed up to 32 months)

  5. Percentage Change From Baseline in Target Lesion Tumour Size [Per BICR and Per Sensitivity Analysis]

    Tumour size was the sum of the longest diameters of the target lesions (TLs). The percentage change in TL tumour size at Week 16 was obtained for each patient as follows (considering a visit window around the scheduled day of the Week 16 assessment): (TL at Week 16 minus TL at baseline) divided by (TL at baseline) multiplied by 100. Here, the percentage change data have been reported as per BICR and as per sensitivity analysis per investigator assessments. Here, the study patient population was stratified as follows: BRCAm patients; non BRCAm HRRm patients; non HRRm patients.

    Time frame: Baseline, at Week 16

  6. Overall Survival (OS)

    Overall survival was defined as the time from the date of randomisation until death due to any cause. Any patient not known to have died at the time of data cut-off was censored based on the last recorded date on which the patient was known to be alive. Here, the study patient population was stratified as follows: BRCAm patients; non BRCAm HRRm patients; non HRRm patients.

    Time frame: From the date of randomisation until time of data cut-off date or death due to any cause (assessed up to 32 months)

  7. Plasma Drug Concentrations of Olaparib

    Plasma drug concentrations of olaparib are evaluated to assess exposure to olaparib in all patients.

    Time frame: Pre-dose at Cycle 1 Day 7 [olaparib monotherapy or ceralasertib+olaparib] or Cycle 1 Day 10 [adavosertib+olaparib] (each cycle is 21 days for olaparib+adavosertib, and 28 days for olaparib monotherapy and olaparib+ceralasertib)

  8. Plasma Drug Concentrations of Ceralasertib and Adavosertib

    Plasma drug concentrations of ceralasertib and adavosertib are evaluated to assess exposure to ceralasertib and adavosertib in all patients.

    Time frame: Pre-dose at Cycle 1 Day 7 [ceralasertib+olaparib] or Cycle 1 Day 10 [adavosertib+olaparib] (each cycle is 21 days for olaparib+adavosertib, and 28 days for olaparib+ceralasertib)

  9. Number of Patients With Treatment Emergent Adverse Events (TEAEs)

    Treatment-emergent adverse events reported after treatment with olaparib monotherapy, the combination of ceralasertib and olaparib or the combination of adavosertib and olaparib. The data includes adverse events (AEs) with an onset or worsening date on or after the date of first dose and up to and including 30 days following the date of last dose of study medication.

    Time frame: From screening until Follow-up 30 Days after last dose of study treatment (assessed up to 32 months)

07

Results

Posted Mar 22, 2022
Limitations and caveats
The interpretation of efficacy results of the adavosertib + olaparib arm and comparison with the olaparib monotherapy arm and ceralasertib + olaparib arm is limited due to the lower number of patients with available data in the adavosertib + olaparib arm, the nature of the analysis (intent-to-treat), and the fact that some of the patients switched from adavosertib + olaparib treatment to olaparib monotherapy.

Participant flow

The study was conducted between 21-Feb-2018 and 13-Nov-2020 in 15 countries in Asia, Europe, and North America.

Participant flow — Overall Study
MilestoneOlaparib MonotherapyOlaparib + CeralasertibOlaparib + Adavosertib
Started11411247
Completed524732
Not completed626515
Withdrew: Patients ongoing study626515

Outcome measures

PrimaryProgression-free Survival Per Stratum (BICR)

Progression-free survival was defined as time from randomization until the date of objective disease progression or death, regardless of whether the patient withdrew from randomized therapy or received another anti-cancer therapy prior to progression. Progression was determined by Blinded independent central review (BICR) using Response Evaluation Criteria In Solid Tumours Version (RECIST 1.1). Patients who had not progressed or died at the time of analysis were censored at the time of the latest date of assessment from their last evaluable RECIST assessment. If patients had no evaluable visits or baseline data, the patient was censored at Study Day 1, unless death occurred within 17 weeks i.e., death within 17 weeks was relative to randomization. Here, the study patient population was stratified as follows: Breast cancer susceptible gene mutation (BRCAm) patients; non BRCAm homologous recombination repair gene mutation (HRRm) patients; non HRRm patients.

Time frame:
Until date of first documented progression or censoring date or date of death from any cause, whichever came first (assessed up to 32 months)
Reported as:
Median · Months
Progression-free Survival Per Stratum (BICR)
MonthsOlaparib MonotherapyOlaparib + CeralasertibOlaparib + Adavosertib
BRCAm patients7.3 (5.5 to 8.1)7.4 (5.3 to 7.8)3.8 (3.7 to 11.4)
non BRCAm HRRm patients1.9 (1.8 to 3.6)3.9 (1.9 to 17.4)2.1 (0.6 to 14.1)
non HRRm patients1.9 (1.8 to 2.9)3.6 (2.7 to 3.8)4.4 (3.2 to 5.6)
Statistical analysis
  • Olaparib Monotherapy vs Olaparib + Ceralasertib · Two-sided log-rank tests · p = 0.9403 · Hazard ratio (hr): 1.02 · 90% CI 0.63 to 1.66Proportional hazards models based on prior platinum-based therapy (no, yes). Hazard ratio \< 1 favours respective combination treatment related with a longer PFS than olaparib monotherapy. Here, favours olaparib monotherapy.
  • Olaparib Monotherapy vs Olaparib + Adavosertib · Two-sided log-rank tests · p = 0.9282 · Hazard ratio (hr): 1.01 · 90% CI 0.52 to 1.88Proportional hazards models based on prior platinum-based therapy (no, yes). Hazard ratio \< 1 favours respective combination treatment related with a longer PFS than olaparib monotherapy. Here, favours olaparib monotherapy.
  • Olaparib Monotherapy vs Olaparib + Ceralasertib · Two-sided log-rank tests · p = 0.1274 · Hazard ratio (hr): 0.54 · 90% CI 0.28 to 1.03Proportional hazards models based on prior platinum-based therapy (no, yes). Hazard ratio \< 1 favours respective combination treatment related with a longer PFS than olaparib monotherapy. Here, favours olaparib + ceralasertib.
  • Olaparib Monotherapy vs Olaparib + Adavosertib · Two-sided log-rank tests · p = 0.2956 · Hazard ratio (hr): 0.56 · 90% CI 0.23 to 1.26Proportional hazards models based on prior platinum-based therapy (no, yes). Hazard ratio \< 1 favours respective combination treatment related with a longer PFS than olaparib monotherapy. Here, favours olaparib + adavosertib.
  • Olaparib Monotherapy vs Olaparib + Ceralasertib · Two-sided log-rank tests · p = 0.2959 · Hazard ratio (hr): 0.76 · 90% CI 0.50 to 1.14Proportional hazards models based on prior platinum-based therapy (no, yes). Hazard ratio \< 1 favours respective combination treatment related with a longer PFS than olaparib monotherapy. Here, favours olaparib + ceralasertib.
  • Olaparib Monotherapy vs Olaparib + Adavosertib · Two-sided log-rank tests · p = 0.0193 · Hazard ratio (hr): 0.48 · 90% CI 0.28 to 0.80Proportional hazards models based on prior platinum-based therapy (no, yes). Hazard ratio \< 1 favours respective combination treatment related with a longer PFS than olaparib monotherapy. Here, favours olaparib + adavosertib.
PrimaryProgression-free Survival Per Stratum (Sensitivity Analysis)

Progression-free survival was defined as time from randomization until the date of objective disease progression or death, regardless of whether the patient withdrew from randomized therapy or received another anti-cancer therapy prior to progression. Progression was determined by the site Investigator. Patients who had not progressed or died at the time of analysis were censored at the time of the latest date of assessment from their last evaluable RECIST 1.1 assessment. If patients had no evaluable visits or baseline data, the patient was censored at Study Day 1, unless death occurred within 17 weeks i.e., death within 17 weeks was relative to randomization. Here, the study patient population was stratified as follows: BRCAm patients; non BRCAm HRRm patients; non HRRm patients.

Time frame:
Until date of first documented progression or censoring date or date of death from any cause, whichever came first (assessed up to 32 months)
Reported as:
Median · Months
Progression-free Survival Per Stratum (Sensitivity Analysis)
MonthsOlaparib MonotherapyOlaparib + CeralasertibOlaparib + Adavosertib
BRCAm patients7.4 (5.6 to 10.0)7.5 (5.7 to 9.3)5.4 (3.7 to 11.5)
non BRCAm HRRm patients3.4 (1.8 to 3.7)3.7 (1.9 to 5.5)2.9 (1.0 to 7.4)
non HRRm patients1.9 (1.7 to 2.4)3.5 (1.9 to 3.8)2.9 (1.9 to 4.0)
Statistical analysis
  • Olaparib Monotherapy vs Olaparib + Ceralasertib · Two-sided log-rank tests · p = 0.6147 · Hazard ratio (hr): 0.87 · 90% CI 0.53 to 1.39Proportional hazards models based on prior platinum-based therapy (no, yes). Hazard ratio \< 1 favours respective combination treatment related with a longer PFS than olaparib monotherapy. Here, favours olaparib + ceralasertib.
  • Olaparib Monotherapy vs Olaparib + Adavosertib · Two-sided log-rank tests · p = 0.7879 · Hazard ratio (hr): 0.93 · 90% CI 0.48 to 1.68Proportional hazards models based on prior platinum-based therapy (no, yes). Hazard ratio \< 1 favours respective combination treatment related with a longer PFS than olaparib monotherapy. Here, favours olaparib + adavosertib.
  • Olaparib Monotherapy vs Olaparib + Ceralasertib · Two-sided log-rank tests · p = 0.3695 · Hazard ratio (hr): 0.71 · 90% CI 0.38 to 1.31Proportional hazards models based on prior platinum-based therapy (no, yes). Hazard ratio \< 1 favours respective combination treatment related with a longer PFS than olaparib monotherapy. Here, favours olaparib + ceralasertib.
  • Olaparib Monotherapy vs Olaparib + Adavosertib · Two-sided log-rank tests · p = 0.4586 · Hazard ratio (hr): 0.71 · 90% CI 0.29 to 1.58Proportional hazards models based on prior platinum-based therapy (no, yes). Hazard ratio \< 1 favours respective combination treatment related with a longer PFS than olaparib monotherapy. Here, favours olaparib + adavosertib.
  • Olaparib Monotherapy vs Olaparib + Ceralasertib · Two-sided log-rank tests · p = 0.7452 · Hazard ratio (hr): 0.89 · 90% CI 0.61 to 1.31Proportional hazards models based on prior platinum-based therapy (no, yes). Hazard ratio \< 1 favours respective combination treatment related with a longer PFS than olaparib monotherapy. Here, favours olaparib + ceralasertib.
  • Olaparib Monotherapy vs Olaparib + Adavosertib · Two-sided log-rank tests · p = 0.1185 · Hazard ratio (hr): 0.61 · 90% CI 0.37 to 1.00Proportional hazards models based on prior platinum-based therapy (no, yes). Hazard ratio \< 1 favours respective combination treatment related with a longer PFS than olaparib monotherapy. Here, favours olaparib + adavosertib.
SecondaryProgression-free Survival (Per BICR)

Progression-free survival was defined as time from randomization until the date of objective disease progression or death, regardless of whether the patient withdrew from randomized therapy or received another anti-cancer therapy prior to progression. Progression was determined by BICR using RECIST 1.1. Patients who had not progressed or died at the time of analysis were censored at the time of the latest date of assessment from their last evaluable RECIST assessment. If patients had no evaluable visits or baseline data, the patient was censored at Study Day 1, unless death occurred within 17 weeks i.e., death within 17 weeks was relative to randomization. Here, the study patient population was presented as follows: HRRm and all enrolled patients.

Time frame:
From randomization until date of first documented progression or censoring date or date of death from any cause, whichever came first (assessed up to 32 months)
Reported as:
Median · Months
Progression-free Survival (Per BICR)
MonthsOlaparib MonotherapyOlaparib + CeralasertibOlaparib + Adavosertib
HRRm patients per BICR5.6 (3.7 to 6.1)5.6 (5.3 to 7.4)3.7 (3.4 to 7.4)
All patients per BICR3.6 (2.9 to 5.4)5.3 (3.7 to 5.5)3.8 (3.7 to 5.6)
SecondaryNumber of Patients With Objective Response (Per BICR and Per Sensitivity Analysis)

The objective response was defined as patients with at least one BICR assessed visit response of CR or PR. For sensitivity analysis, objective response was defined as the patients with at least one visit response of CR or PR based on Investigator data. These are unadjusted percentages of responders (100 \* number of responders / number of patients in full analysis set). The objective response was assessed per RECIST 1.1 guidelines for: measurable lesions (measured at baseline as ≥ 10 mm in the longest diameter (except lymph nodes which must have short axis ≥ 15 mm) using CT or MRI, non-measurable lesions (all other lesions, including small lesions (longest diameter \<10 mm or pathological lymph nodes with ≥10 to \<15mm short axis at baseline), based on target lesions \[TL\] (maximum of 5 measurable lesions (with a maximum of 2 lesions per organ), non-target lesions \[NTL\] (lesions (or sites of disease) not recorded as TL should be identified as NTL at baseline) and any new lesions.

Time frame:
From date of randomization until date of first documented progression or last evaluable assessment, or start of subsequent anti-cancer therapy (Whichever occurred first [assessed up to 32 months])
Reported as:
Count of participants · Participants
Number of Patients With Objective Response (Per BICR and Per Sensitivity Analysis)
ParticipantsOlaparib MonotherapyOlaparib + CeralasertibOlaparib + Adavosertib
BRCAm patients per BICR19206
non BRCAm HRRm patients per BICR340
non HRRm patients per BICR283
HRRm patients per BICR22246
All patients per BICR24329
BRCAm patients per sensitivity analysis18207
non BRCAm HRRm per sensitivity analysis341
non HRRm per sensitivity analysis1113
SecondaryObjective Response Rate (ORR) (Per BICR and Per Sensitivity Analysis)

The ORR was defined using BICR data to define a visit response of CR or PR, with denominator defined as number of patients in FAS. For sensitivity analysis, ORR is defined as the percentage of patients with at least one investigator-assessed visit response of CR or PR, with denominator defined as number of patients in FAS. These are summarized using adjusted response rates, which are computed with a logistic regression including factors study treatment and prior platinum-based therapy (no, yes), i.e. these response rates are adjusted for prior platinum-based therapy, which is one of the randomisation stratification factors. The adjusted response rates have been presented as a percentage of patients.

Time frame:
From date of randomization until date of first documented progression or last evaluable assessment, or start of subsequent anti-cancer therapy (Whichever occurred first [assessed up to 32 months])
Reported as:
Number · Percentage of patients
Objective Response Rate (ORR) (Per BICR and Per Sensitivity Analysis)
Percentage of patientsOlaparib MonotherapyOlaparib + CeralasertibOlaparib + Adavosertib
BRCAm patients per BICR42.748.444.9
non BRCAm HRRm patients per BICR15.020.00.0
non HRRm patients per BICR3.915.411.1
HRRm patients per BICR33.238.028.5
All patients per BICR20.127.318.3
BRCAm patients per sensitivity analysis41.049.053.1
non BRCAm HRRm per sensitivity analysis15.020.014.3
non HRRm per sensitivity analysis2.021.211.1
SecondaryDuration of Response (DoR) [Per BICR and Per Sensitivity Analysis]

The DoR was defined as the time from the date of first documented response according to BICR data until date of documented progression according to BICR data or death in the absence of disease progression. For sensitivity analysis, DoR was defined as the time from the date of first documented response according to Investigator assessment until date of documented progression according to Investigator assessment or death in the absence of disease progression. Here, the median DoR and the 25th and 75th percentile of DoR are presented. The DoR from onset of response was calculated using Kaplan-Meier technique. Here, the study patient population was stratified as follows: BRCAm patients; non BRCAm HRRm patients; non HRRm patients.

Time frame:
From date of first documented response until date of first documented progression or last evaluable assessment (assessed up to 32 months)
Reported as:
Median · Weeks
Duration of Response (DoR) [Per BICR and Per Sensitivity Analysis]
WeeksOlaparib MonotherapyOlaparib + CeralasertibOlaparib + Adavosertib
BRCAm patients per BICR20.0 (16.0 to 32.1)32.0 (16.1 to 56.4)33.4 (8.1 to 42.1)
non BRCAm HRRm patients per BICR16.8 (16.3 to 17.3)17.1 (12.3 to NA)—
non HRRm patients per BICR11.4 (7.1 to 15.7)24.1 (15.1 to 24.1)16.6 (16.1 to 17.0)
BRCAm patients per sensitivity analysis20.0 (15.1 to 42.6)32.6 (24.1 to 93.4)41.1 (16.1 to NA)
non BRCAm HRRm per sensitivity analysis16.3 (8.1 to 28.1)16.5 (12.0 to 17.1)48.1 (48.1 to 48.1)
non HRRm per sensitivity analysis13.6 (13.6 to 13.6)11.7 (8.1 to 16.1)31.6 (31.3 to 31.9)
SecondaryPercentage Change From Baseline in Target Lesion Tumour Size [Per BICR and Per Sensitivity Analysis]

Tumour size was the sum of the longest diameters of the target lesions (TLs). The percentage change in TL tumour size at Week 16 was obtained for each patient as follows (considering a visit window around the scheduled day of the Week 16 assessment): (TL at Week 16 minus TL at baseline) divided by (TL at baseline) multiplied by 100. Here, the percentage change data have been reported as per BICR and as per sensitivity analysis per investigator assessments. Here, the study patient population was stratified as follows: BRCAm patients; non BRCAm HRRm patients; non HRRm patients.

Time frame:
Baseline, at Week 16
Reported as:
Mean · Percentage change
Percentage Change From Baseline in Target Lesion Tumour Size [Per BICR and Per Sensitivity Analysis]
Percentage changeOlaparib MonotherapyOlaparib + CeralasertibOlaparib + Adavosertib
BRCAm patients per BICR-27.7 ± 34.33-33.8 ± 37.77-34.1 ± 42.52
non BRCAm HRRm patients per BICR4.9 ± 35.784.9 ± 35.7242.3 ± 27.44
non HRRm patients per BICR40.3 ± 76.185.7 ± 40.469.2 ± 32.66
BRCAm patients per sensitivity analysis-21.9 ± 39.88-29.5 ± 35.36-23.7 ± 41.85
non BRCAm HRRm per sensitivity analysis6.2 ± 34.77-2.1 ± 40.6673.9 ± 107.94
non HRRm per sensitivity analysis20.1 ± 34.713.9 ± 37.209.3 ± 27.46
SecondaryOverall Survival (OS)

Overall survival was defined as the time from the date of randomisation until death due to any cause. Any patient not known to have died at the time of data cut-off was censored based on the last recorded date on which the patient was known to be alive. Here, the study patient population was stratified as follows: BRCAm patients; non BRCAm HRRm patients; non HRRm patients.

Time frame:
From the date of randomisation until time of data cut-off date or death due to any cause (assessed up to 32 months)
Reported as:
Median · Months
Overall Survival (OS)
MonthsOlaparib MonotherapyOlaparib + CeralasertibOlaparib + Adavosertib
BRCAm patients20.4 (16.1 to 22.0)15.5 (13.0 to NA)22.8 (12.1 to NA)
non BRCAm HRRm patients8.4 (6.2 to 14.1)12.4 (7.9 to NA)8.0 (1.0 to NA)
non HRRm patients9.2 (6.9 to NA)10.3 (7.3 to NA)10.6 (7.2 to 14.2)
SecondaryPlasma Drug Concentrations of Olaparib

Plasma drug concentrations of olaparib are evaluated to assess exposure to olaparib in all patients.

Time frame:
Pre-dose at Cycle 1 Day 7 [olaparib monotherapy or ceralasertib+olaparib] or Cycle 1 Day 10 [adavosertib+olaparib] (each cycle is 21 days for olaparib+adavosertib, and 28 days for olaparib monotherapy and olaparib+ceralasertib)
Reported as:
Mean · ug/mL
Plasma Drug Concentrations of Olaparib
ug/mLOlaparib MonotherapyOlaparib + CeralasertibOlaparib + Adavosertib
Plasma Drug Concentrations of Olaparib2.97 ± 2.412.90 ± 2.683.22 ± 3.37
SecondaryPlasma Drug Concentrations of Ceralasertib and Adavosertib

Plasma drug concentrations of ceralasertib and adavosertib are evaluated to assess exposure to ceralasertib and adavosertib in all patients.

Time frame:
Pre-dose at Cycle 1 Day 7 [ceralasertib+olaparib] or Cycle 1 Day 10 [adavosertib+olaparib] (each cycle is 21 days for olaparib+adavosertib, and 28 days for olaparib+ceralasertib)
Reported as:
Mean · ng/mL
Plasma Drug Concentrations of Ceralasertib and Adavosertib
ng/mLOlaparib + CeralasertibOlaparib + Adavosertib
Plasma Drug Concentrations of Ceralasertib and Adavosertib870.05 ± 772.05290.46 ± 169.07
SecondaryNumber of Patients With Treatment Emergent Adverse Events (TEAEs)

Treatment-emergent adverse events reported after treatment with olaparib monotherapy, the combination of ceralasertib and olaparib or the combination of adavosertib and olaparib. The data includes adverse events (AEs) with an onset or worsening date on or after the date of first dose and up to and including 30 days following the date of last dose of study medication.

Time frame:
From screening until Follow-up 30 Days after last dose of study treatment (assessed up to 32 months)
Reported as:
Count of participants · Participants
Number of Patients With Treatment Emergent Adverse Events (TEAEs)
ParticipantsOlaparib MonotherapyOlaparib + CeralasertibOlaparib + Adavosertib
Any AE10510746
Any AE causally related to olaparib919543
Any AE causally related to non-olaparibNA9245
Any AE causally related to non-olaparib and olaparibNA9142
Any AE with outcome = death121
Any AE with outcome = death, causally related to olaparib000
Any AE with outcome = death, causally related to non-olaparibNA00
Any AE with outcome = death, causally related to non-olaparib and olaparibNA00
Any SAE212417
Any SAE causally related to olaparib499
Any SAE causally related to non-olaparibNA714
Any SAE causally related to non-olaparib and olaparibNA79
Any AE leading to discontinuation of study treatment2129
AEs leading to reduction of study treatment153219
AEs leading to reduction of olaparib153011
AEs leading to reduction of non-olaparibNA1612
AEs leading to reduction of non-olaparib and olaparibNA113

Adverse events

Collected over From screening until Follow-up 30 Days after last dose of study treatment (assessed up to 32 months). Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Olaparib Monotherapy42/114 (36.8%)21/110 (19.1%)99/110 (90%)
Olaparib + Ceralasertib40/112 (35.7%)24/109 (22%)106/109 (97.2%)
Olaparib + Adavosertib26/47 (55.3%)17/46 (37%)46/46 (100%)
Most frequent serious events
Showing 10 of 58
Most frequent serious events
EventOlaparib MonotherapyOlaparib + CeralasertibOlaparib + Adavosertib
Febrile neutropeniaBlood and lymphatic system disorders1/1101/1095/46
NeutropeniaBlood and lymphatic system disorders0/1100/1094/46
ThrombocytopeniaBlood and lymphatic system disorders0/1100/1093/46
LeukopeniaBlood and lymphatic system disorders0/1100/1092/46
VomitingGastrointestinal disorders1/1100/1092/46
PneumoniaInfections and infestations0/1103/1091/46
AnaemiaBlood and lymphatic system disorders3/1103/1091/46
SepsisInfections and infestations1/1100/1091/46
Subcutaneous abscessInfections and infestations0/1100/1091/46
Urinary tract infectionInfections and infestations0/1101/1091/46
Most frequent other events
Showing 10 of 44
Most frequent other events
EventOlaparib MonotherapyOlaparib + CeralasertibOlaparib + Adavosertib
NauseaGastrointestinal disorders55/11064/10926/46
DiarrhoeaGastrointestinal disorders16/11024/10925/46
AnaemiaBlood and lymphatic system disorders36/11056/10923/46
NeutropeniaBlood and lymphatic system disorders10/11020/10919/46
FatigueGeneral disorders30/11032/10916/46
VomitingGastrointestinal disorders34/11031/10915/46
AstheniaGeneral disorders26/11033/1097/46
Decreased appetiteMetabolism and nutrition disorders19/11022/10910/46
ConstipationGastrointestinal disorders12/11017/10910/46
ThrombocytopeniaBlood and lymphatic system disorders3/11012/1099/46

Baseline characteristics

Full analysis set: All randomized patients were analyzed according to the randomization scheme, regardless of the treatment they actually received.

Age, Continuous
Age, Continuous(Years)Olaparib MonotherapyOlaparib + CeralasertibOlaparib + AdavosertibTotal
Mean53.1 ± 11.5554.4 ± 10.8552.7 ± 11.2953.6 ± 11.21
Age, Customized
Age, Customized(Participants)Olaparib MonotherapyOlaparib + CeralasertibOlaparib + AdavosertibTotal
<40 Years159428
>=40 to <50 Years30271875
>=50 to <65 Years525716125
>=65 to <75 Years1413835
>=75 Years36110
Sex: Female, Male
Sex: Female, Male(Participants)Olaparib MonotherapyOlaparib + CeralasertibOlaparib + AdavosertibTotal
Female11411247273
Male0000
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Olaparib MonotherapyOlaparib + CeralasertibOlaparib + AdavosertibTotal
Hispanic or Latino67518
Not Hispanic or Latino929740229
Unknown or Not Reported168226
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Olaparib MonotherapyOlaparib + CeralasertibOlaparib + AdavosertibTotal
American Indian or Alaska Native0000
Asian1423744
Native Hawaiian or Other Pacific Islander0000
Black or African American2024
White817734192
More than one race55212
Unknown or Not Reported127221
08

Study locations

141 sites
  • Research Site
    Birmingham, Alabama 35205, United States
  • Research Site
    Anchorage, Alaska 99508, United States
  • Research Site
    Gilbert, Arizona 85234, United States
  • Research Site
    Aurora, Colorado 80045, United States
  • Research Site
    New Haven, Connecticut 06511, United States
  • Research Site
    Chicago, Illinois 60637, United States
  • Research Site
    Munster, Indiana 46321, United States
  • Research Site
    Hazard, Kentucky 41701, United States
  • Research Site
    Louisville, Kentucky 40207, United States
  • Research Site
    Towson, Maryland 21204, United States
  • Research Site
    Brick, New Jersey 08724, United States
  • Research Site
    East Setauket, New York 11733, United States
  • Research Site
    Lake Success, New York 11042, United States
  • Research Site
    Mineola, New York 11501, United States
  • Research Site
    Mount Kisco, New York 10549, United States
  • Research Site
    Stony Brook, New York 11794, United States
  • Research Site
    Cincinnati, Ohio 45219, United States
  • Research Site
    Knoxville, Tennessee 37909, United States
  • Research Site
    Seattle, Washington 98104, United States
  • Research Site
    Milwaukee, Wisconsin 53212, United States
  • Research Site
    Brasschaat, 2930, Belgium
  • Research Site
    Brussels, 1000, Belgium
  • Research Site
    Brussels, 1200, Belgium
  • Research Site
    Charleroi, 6000, Belgium
  • Research Site
    Leuven, 3000, Belgium
  • Research Site
    Liège, 4000, Belgium
  • Research Site
    Namur, 5000, Belgium
  • Research Site
    Ottignies, 1340, Belgium
  • Research Site
    Wilrijk, 2610, Belgium
  • Research Site
    Calgary, Alberta T2N 4N2, Canada
  • Research Site
    Kelowna, British Columbia V1Y 5L3, Canada
  • Research Site
    Ottawa, Ontario K1H 8L6, Canada
  • Research Site
    Toronto, Ontario M4N 3M5, Canada
  • Research Site
    Brno, 625 00, Czechia
  • Research Site
    Olomouc, 775 20, Czechia
  • Research Site
    Prague, 180 81, Czechia
  • Research Site
    Angers, 49055, France
  • Research Site
    Besançon, 25030, France
  • Research Site
    Bordeaux, 33076, France
  • Research Site
    Caen, 14076, France
  • Research Site
    Lille, 59000, France
  • Research Site
    Lyon, 69373, France
  • Research Site
    Marseille, 13273, France
  • Research Site
    Montpellier, 34298, France
  • Research Site
    Nantes, 44202, France
  • Research Site
    Rennes, 35000, France
  • Research Site
    Saint-Herblain, 44805, France
  • Research Site
    Tours, 37044, France
  • Research Site
    Villejuif, 94805, France
  • Research Site
    Dresden, 1307, Germany
  • Research Site
    Frankfurt am Main, 60431, Germany
  • Research Site
    Hamburg, 20357, Germany
  • Research Site
    Hanover, 30559, Germany
  • Research Site
    Leipzig, 04103, Germany
  • Research Site
    München, 81675, Germany
  • Research Site
    Witten, 58452, Germany
  • Research Site
    Cork, T12 DV56, Ireland
  • Research Site
    Dublin, Ireland
  • Research Site
    Ancona, 60126, Italy
  • Research Site
    Bologna, 40138, Italy
  • Research Site
    Brescia, 25124, Italy
  • Research Site
    Cona, 44124, Italy
  • Research Site
    Genova, 16128, Italy
  • Research Site
    Lecco, 23900, Italy
  • Research Site
    Meldola, 47014, Italy
  • Research Site
    Messina, 98124, Italy
  • Research Site
    Milan, 20133, Italy
  • Research Site
    Milan, 20141, Italy
  • Research Site
    Naples, 80131, Italy
  • Research Site
    Novara, 28100, Italy
  • Research Site
    Parma, 43126, Italy
  • Research Site
    Pavia, 27100, Italy
  • Research Site
    Pisa, 56126, Italy
  • Research Site
    Province of Macerata, 62100, Italy
  • Research Site
    Roma, 00128, Italy
  • Research Site
    Rozzano, 20089, Italy
  • Research Site
    Siena, 53100, Italy
  • Research Site
    Torino, 10123, Italy
  • Research Site
    Breda, 4819 EV, Netherlands
  • Research Site
    Rotterdam, 3015 GD, Netherlands
  • Research Site
    The Hague, 2545 CH, Netherlands
  • Research Site
    Dąbrowa Górnicza, 41-300, Poland
  • Research Site
    Gdansk, 80-952, Poland
  • Research Site
    Gdynia, 81-519, Poland
  • Research Site
    Grzepnica, 72-003, Poland
  • Research Site
    Krakow, 31-531, Poland
  • Research Site
    Lodz, 91-211, Poland
  • Research Site
    Olsztyn, 10-228, Poland
  • Research Site
    Poznan, 60-192, Poland
  • Research Site
    Warsaw, 02-781, Poland
  • Research Site
    Wroclaw, 53-413, Poland
  • Research Site
    Lisbon, 1400-038, Portugal
  • Research Site
    Lisbon, 1769-001, Portugal
  • Research Site
    Loures, 2674-514, Portugal
  • Research Site
    Porto, 4099-001, Portugal
  • Research Site
    Vila Nova de Gaia, 4434-502, Portugal
  • Research Site
    Cheongju-si, 28644, South Korea
  • Research Site
    Daegu, 41404, South Korea
  • Research Site
    Goyang-si, 410-769, South Korea
  • Research Site
    Incheon, 405-760, South Korea

Showing the first 100 of 141 sites across 15 countries. Choose a country and city above to see the rest.

09

References and documents

Publications

  • Smith G, Alholm Z, Coleman RL, Monk BJ. DNA Damage Repair Inhibitors-Combination Therapies. Cancer J. 2021 Nov-Dec 01;27(6):501-505. doi: 10.1097/PPO.0000000000000561. PubMed 34904813 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: Yes — Qualified researchers can request access to anonymized individual patient-level data from AstraZeneca group of companies sponsored clinical trials via the request portal. All request will be evaluated as per the AZ disclosure commitment: https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure.

Supporting information: Study protocol, Statistical analysis plan

Time frame: AstraZeneca will meet or exceed data availability as per the commitments made to the EFPIA Pharma Data Sharing Principles. For details of our timelines, please rerefer to our disclosure commitment at https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure.

Access criteria: When a request has been approved AstraZeneca will provide access to the de-identified individual patient-level data in an approved sponsored tool . Signed Data Sharing Agreement (non-negotiable contract for data accessors) must be in place before accessing requested information. Additionally, all users will need to accept the terms and conditions of the SAS MSE to gain access. For additional details, please review the Disclosure Statements at https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure.

Data sharing details ↗ · astrazenecagroup-dt.pharmacm.com

10

Timeline

1 registry update since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Mar 2018 to primary completion in Nov 2020, 32 months.

Results were first posted in Mar 2022, 1 year 4 months after primary completion.

Of 255 phase 2 interventional studies under Triple Negative Breast Neoplasms, half reached primary completion within 59 months of starting (the median), counting those still running; a quarter within 37 and three quarters within 94. This study's 32 months is below that.

How these figures are worked out, and which studies are left out of them.

Registered
Oct 16, 2017
First posted
Nov 6, 2017
StartActual
Mar 7, 2018
Primary completionActual
Nov 13, 2020
CompletionEst.
Oct 9, 2026
Results first posted
Mar 22, 2022
Last update
Oct 14, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
Minor edits
Nothing that changes what the study is or who can join. Edited: identifiers and verification date
1 update, last Oct 14, 2026
Show all 1 update
  1. Oct 14, 2026
    Minor edits only
    + 2 other changes: identifiers and verification date

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

11

Registry details

Key details

Study ID
NCT03330847
Lead sponsor
AstraZeneca
Responsible party
Sponsor
First posted
Nov 6, 2017
Start date
Mar 7, 2018
Primary completion
Nov 13, 2020
Completion
Oct 9, 2026 (estimated)
Results posted
Mar 22, 2022
Last update
Oct 14, 2026

Study contacts

Andrew Tutt, MB ChB PhD
principal investigator · Guy's Hospital, Great Maze Pond, London.

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in Oct 2026. You cannot join it, but the record below documents what was studied.

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Discussion

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Studies of the drugs tested here: Ceralasertib · Adavosertib

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