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ProstatePhase 2NCT03047135

Olaparib in Men With High-Risk Biochemically-Recurrent Prostate Cancer Following Radical Prostatectomy, With Integrated Biomarker Analysis

A Phase 2 study testing Olaparib in people with Prostate, run by Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins at 4 sites in United States.

Active, not recruiting

Under way, not looking for participants. Everyone needed has enrolled. The study is still running.

Official record
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Trial summary

Olaparib has demonstrated preliminary efficacy in metastatic castration-resistant prostate cancer. In a trial of 49 evaluable patients treated with olaparib, 11 / 49 experienced a PSA response, and every patient with a radiographic response also had a PSA5 response. Read more about this study

Who is it for?
Ages 18 years and older, men only
Conditions the study is for
Prostate
What is being tested?
Olaparib
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
51 participants
Where
4 sitesUnited States
Study dates
1 Mar 2017to 1 May 2027
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • Men only
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Histologic diagnosis of adenocarcinoma of the prostate
  • Prior local therapy with prostatectomy required, with available tissue from prostatectomy specimen to send for genomic and transcriptomic testing.
  • Prior salvage or adjuvant radiation therapy is allowed but not mandated. Radiation therapy must have been completed for at least 6 months.
  • Absolute PSA ≥1 ng/ml. Prior undetectable PSA post-prostatectomy is not required.
  • PSADT ≤6 months, based upon ≥3 consecutive measurements collected in the past 12 months, at least 4 weeks apart
  • No radiographic evidence of metastatic disease by CT scan and bone scan, performed within the prior 4 weeks.
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  • Serum testosterone ≥ 150 ng/dl
  • Participants must have normal organ and bone marrow function measured within 28 days prior to administration of study treatment as defined below:
  • Hemoglobin ≥ 10.0 g/dL with no blood transfusion in the past 28 days
  • Absolute neutrophil count (ANC) ≥ 1.5 x 109/L
  • Platelet count ≥ 75 x 109/L
  • Total bilirubin ≤ 1.5 x institutional upper limit of normal (ULN)
  • Aspartate aminotransferase (AST) (Serum Glutamic Oxaloacetic Transaminase (SGOT)) / Alanine aminotransferase (ALT) (Serum Glutamic Pyruvate Transaminase (SGPT)) <2.5 x institutional upper limit of normal. Note: Patients with elevations in bilirubin, AST, or ALT should be thoroughly evaluated for the etiology of this abnormality prior to entry and patients with evidence of viral infection should be excluded.
  • Patients must have creatinine clearance estimated using the Cockcroft
  • Gault equation of ≥51 mL/min:
  • Estimated creatinine clearance = (140-age [years]) x weight (kg) serum creatinine (mg/dL) x 72
  • Eastern Cooperative Oncology Group (ECOG) performance status 0-1
  • Male participants and their partners, who are sexually active and of childbearing potential, must agree to the use of two highly effective forms of contraception in combination [see appendix F for acceptable methods], throughout the period of taking study treatment and for 3 months after last dose of study drug to prevent pregnancy in a partner.
  • For enrichment stage of trial only (if necessary): Confirmation of a suspected/known deleterious mutation in a gene of interest (ATM, BARD1, BRCA1, BRCA2, BRIP1, CDK12, CHEK1, CHEK2, FANCL, PALB2, PPP2R2A, RAD51B, RAD51C, RAD51D, or other DNA repair genes) via CLIA certified testing.

Who cannot join

  • Prior ADT in the past 6 months. Prior ADT in context of neoadjuvant/adjuvant primary; prior ADT for biochemical recurrence is allowed, as long as no ADT has been administered in past 6 months and testosterone has recovered (>150 ng/dl). The total duration of prior ADT should not exceed 24 months.
  • Prior oral anti-androgen (e.g. bicalutamide, nilutamide, enzalutamide, apalutamide), or androgen synthesis inhibitor (e.g. abiraterone, orteronel) in the past 6 months. 5-alpha reductase inhibitor therapy (e.g. finasteride, dutasteride) is allowed, as long as subject has been stable on medication for past 6 months.
  • Prior treatment with intravenous chemotherapy.
  • Involvement in the planning and/or conduct of the study
  • Participation in another clinical study with an investigational product during the last 1 month.
  • Any previous treatment with PARP inhibitor, including olaparib
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  • Resting ECG with QTc > 470 msec on 2 or more time points within a 24 hour period or family history of long QT syndrome
  • Concomitant use of known strong CYP3A inhibitors (eg. itraconazole, telithromycin, clarithromycin, protease inhibitors boosted with ritonavir or cobicistat, indinavir, saquinavir, nelfinavir, boceprevir, telaprevir) or moderate CYP3A inhibitors (eg. ciprofloxacin, erythromycin, diltiazem, fluconazole, verapamil). The required washout period prior to starting olaparib is 2 weeks.
  • Concomitant use of known strong CYP3A inducers (eg. phenobarbital, enzalutamide, phenytoin, rifampicin, rifabutin, rifapentine, carbamazepine, nevirapine and St John's Wort ) or moderate CYP3A inducers (eg. bosentan, efavirenz, modafinil). The required washout period prior to starting olaparib is 5 weeks for phenobarbital and 3 weeks for other agents.
  • Myelodysplastic syndrome/acute myeloid leukaemia or with features suggestive of MDS/AML.
  • Major surgery within 2 weeks of starting study treatment and patients must have recovered from any effects of any major surgery.
  • Poor medical risk due to a serious, uncontrolled medical disorder, non- malignant systemic disease or active, uncontrolled infection. Examples include, but are not limited to, uncontrolled ventricular arrhythmia, recent (within 3 months) myocardial infarction, uncontrolled major seizure disorder, extensive interstitial bilateral lung disease on High Resolution Computed Tomography (HRCT) scan or any psychiatric disorder that prohibits obtaining informed consent.
  • Unable to swallow orally administered medication and patients with gastrointestinal disorders likely to interfere with absorption of the study medication.
  • Immunocompromised patients, e.g., patients who are known to be serologically positive for human immunodeficiency virus (HIV).
  • Known hypersensitivity to olaparib or any of the excipients of the product.
  • Known active hepatitis (i.e. Hepatitis B or C) due to risk of transmitting the infection through blood or other body fluids
  • Whole blood transfusions in the last 120 days prior to entry to the study (packed red blood cells and platelet transfusions are acceptable, for timing refer to inclusion criteria no.10)

Trial locations and contacts

4 sites in 1 country.

United States4 sites
  • Johns Hopkins Hospital

    Baltimore, Maryland, 21231

  • University of Nebraska Medical Center

    Omaha, Nebraska, 68198

  • Thomas Jefferson University

    Philadelphia, Pennsylvania, 19107

  • Allegheny Cancer Center

    Pittsburgh, Pennsylvania, 15212

Other trials in United States

About this study

Official title: Phase II Study of Olaparib in Men With High-Risk Biochemically-Recurrent Prostate Cancer Following Radical Prostatectomy, With Integrated Biomarker Analysis

Olaparib has demonstrated preliminary efficacy in metastatic castration-resistant prostate cancer. In a trial of 49 evaluable patients treated with olaparib, 11 / 49 experienced a PSA response, and every patient with a radiographic response also had a PSA5 response.

Ten of 11 responders had mutations in DNA repair genes. While PARP inhibition is showing promise in these initial studies, reserving its use for end-stage patients may not be the optimal timing for olaparib therapy in some patients. In addition, PARP enzymes function in roles beyond DNA repair, and specifically for prostate cancer are involved transcriptional regulation of the androgen receptor. PARP inhibition has not been tested in earlier disease states for prostate cancer.

Read the detailed description

The proposed study is an open-label single-arm phase II trial.

Eligible patients are those with non-metastatic biochemically-recurrent prostate cancer and a PSADT of ≤6 months and a minimum PSA of 1.0.

After enrollment, patients will be treated with olaparib at the established dose of 300mg tablets by mouth twice daily. Patients will be followed monthly with clinic visits, safety labs (including CBC w/diff, Comp), PSA, and toxicity assessments. Treatment [with a minimum drug exposure of 12 weeks] will be continued until PSA doubling from study entry (confirmed with another measurement at least 4 weeks later), development of radiographic metastatic disease, or toxicity requiring drug cessation. CT scans and NM bone scans will be performed every 6 months for patients remaining on olaparib treatment.

This study will enroll up to 50 subjects. The study design will employ a stepwise adaptive statistical plan, derived in part from Biankin et al, Nature 2015 Oct 15;526(7573):361-70. The design is adapted from a multi-stage design, with interim stopping rules to determine futility or need for enrichment of the study population.

The study will initiate with a two-stage design in an unselected population. The assumptions for the trial of the unselected population are: null hypothesis of 0.1 PSA response rate and alternative hypothesis of 0.3 for the unselected population. The first stage is 20 subjects. If ≤2 subjects responds in the first stage, then unselected population study is halted for futility and an assessment of DNA mutations present in the initial cohort will be undertaken. If less than 3 subjects with a known/suspected deleterious mutation in the following genes (ATM, BARD1, BRCA1, BRCA2, BRIP1, CDK12, CHEK1, CHEK2, FANCL, PALB2, PPP2R2A, RAD51B, RAD51C, RAD51D, or other DNA repair genes) have been accrued in the first stage, then the trial will proceed with enrichment. If 3 or more subjects with known/suspected deleterious mutation in the genes of interest have been accrued, then the trial will proceed with enrichment, as long as the response rate in that subset of subjects is ≥20%. In the case that 3 or more subjects have been accrued, yet the response rate in that subset is <20%, then the trial is halted for futility.

However, if ≥3 subjects among the first 20 respond, then additional 10 unselected subjects are accrued. If ≥6 subjects respond out of 30 in the unselected population after the second stage, then the null hypothesis is rejected in the unselected population and broad efficacy will be concluded.

The trial proceeds to complete accrual of 50 subjects in order to better estimate PSA response rate and strengthen data for correlative studies. If <6 respond, then the null hypothesis is not rejected. Again, if less than 3 subjects with a known/suspected deleterious mutation in the following genes (ATM, BARD1, BRCA1, BRCA2, BRIP1, CDK12, CHEK1, CHEK2, FANCL, PALB2, PPP2R2A, RAD51B, RAD51C, RAD51D, or other DNA repair genes) have been accrued in the first and second stage combined, then the trial will proceed with enrichment. If 3 or more subjects with those mutations have been accrued, then enrichment will again proceed as long as the response rate in that subject of subjects is ≥20%.

Conditions
Prostate
Being tested
Olaparib
Keywords
high-risk biochemically-recurrent

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • OlaparibDrug

    Olaparib will be dispensed to patients on Day 1 and every 28 days thereafter until the patient completes the study, withdraws from the study or closure of the study.

Study groups in NCT03047135
Study groupRoleWhat they receive
Olaparib 300 mg BIDExperimentalPatients will be administered olaparib orally twice daily at 300mg bid continually. Two 150mg of olaparib tablets should be taken twice daily, approximately 12 hours apart with one glass of water.
Receives: Drug: Olaparib

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. PSA50 Response Rate to Olaparib for Patients With High-risk Biochemically-recurrent Prostate Cancer

    Number of participants with PSA50 response defined as at least a 50% decline in Prostate Specific Antigen (PSA) from baseline value, confirmed with a second measurement at least 4 weeks apart.

    Measured: 6 years 2 months

Secondary outcomes (4)
  1. Treatment-related Adverse Events as Assessed by CTCAE v4.0

    Number of participants with treatment related adverse events

    Measured: Baseline to End of Treatment

  2. PSA Progression-free Survival

    Defined as a time from initiation on olaparib therapy until PSA increase of 25%, confirmed with another measurement at least 4 weeks later.

    Measured: 7 years

  3. PSA Doubling From Baseline

    Measured: 7 years

  4. Duration of Undetectable PSA

    Number of patients on study with olaparib who achieves a PSA < 0.1, which is confirmed with a repeat measurement at least 12 weeks later.

    Measured: 7 years

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted8 Feb 2017 (estimated)
  2. Study start1 Mar 2017
  3. Primary completion24 May 2023
  4. Study completion1 May 2027 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
51 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03047135
Sponsor's protocol ID
J16163
Other IDs
IRB00114635
Status last verified
Oct 2026
First submitted
6 Feb 2017
Last updated
30 Oct 2026
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Publications

  • Marshall CH, Teply BA, Lu J, Oliveira L, Wang H, Mao SS, Kelly WK, Paller CJ, Markowski MC, Denmeade SR, King S, Sullivan R, Davicioni E, Proudfoot JA, Eisenberger MA, Carducci MA, Lotan TL, Antonarakis ES. Olaparib Without Androgen Deprivation for High-Risk Biochemically Recurrent Prostate Cancer Following Prostatectomy: A Nonrandomized Controlled Trial. JAMA Oncol. 2024 Oct 1;10(10):1400-1408. doi: 10.1001/jamaoncol.2024.3074.

    PubMed 39172479

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Olaparib in people with Prostate, run by Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins at 4 sites in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 19 inclusion and 17 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: under way, not looking for participants, as of the sponsor's last update on 30 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 4 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 3 Jul 2024). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

PSA50 Response Rate to Olaparib for Patients With High-risk Biochemically-recurrent Prostate Cancer (time frame: 6 years 2 months). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03047135, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 30 Oct 2026.

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