Pembrolizumab, Ablative Radiotherapy and Olaparib for the Treatment of Metastatic Triple-Negative or Metastatic ER Positive Breast Cancer
This phase II trial studies the effect of pembrolizumab and ablative radiotherapy in combination with olaparib in treating patients with triple-negative or estrogen receptor positive (ER+) breast cancer that has spread from where it first started (primary site) to other places in the body (metastatic). Pembrolizumab is an antibody, like the proteins made by the immune system to protect the body from harm. Pembrolizumab blocks the protein PD 1 (programmed cell death receptor 1) that usually acts as a “brake” on the immune system. Blocking this protein is like releasing the brakes, so that the immune system can target tumor cells and destroy them. Stereotactic ablative radiation therapy uses special equipment to position a patient and deliver radiation to tumors with high precision. This method may kill tumor cells with fewer doses over a shorter period and cause less damage to normal tissue. Olaparib is a type of medication called a PARP inhibitor. PARP is a protein that helps repair damage to deoxyribonucleic acid (DNA), the genetic material that serves as your body’s instruction book. Changes (mutations) in DNA can cause tumor cells to grow quickly and out of control. But PARP inhibitors have been shown to prevent PARP from working, so tumor cells can’t repair themselves, and they stop growing. The combination radiation with pembrolizumab and olaparib may activate the body’s immune cells to travel to and attack and destroy other sites of triple-negative or ER+ breast cancer in the body.
Inclusion Criteria
- Female participants who are at least 18 years of age on the day of signing informed consent with histologically confirmed diagnosis of triple negative breast cancer or ER+/Her2- will be enrolled in this study
- Have an Eastern Cooperative Oncology Group (ECOG) performance status of 0 to 1. Evaluation of ECOG is to be performed within 30 days prior to the date of allocation/randomization
- Histologically or cytologically-confirmed TNBC (defined as ER < 5%, progesterone receptor [PR] < 5%, HER-2-neu 0-1+ by immunohistochemistry [IHC] or fluorescence in situ hybridization [FISH]-negative) or per Doctor of Medicine [MD] discretion
- Histologically of cytologically-confirmed ER+ breast cancer, defined as ER 1-100% and HER-2/neu 0-1+ by IHC or FISH-negative
- Metastatic or recurrent TNBC
- Metastatic or recurrent ER+ breast cancer
- For mTNBC patients, prior receipt of ICI with progression and/or PDL1-negative. PDL-1 status is not used to determine eligibility among mER+BC patients * Note: PDL1-status may be determined on tissues from either primary or mTNBC. Determination of PD-L1 status by any prototype assays is acceptable. PD-L1 status is required or archival tissue must be readily available for testing during screening if status was not previously determined
- The participant (or legally acceptable representative if applicable) provides written informed consent for the trial
- Have measurable disease based on RECIST 1.1. There should be at least one radiographically-confirmed non-bone metastatic lesion that will not undergo RT and is measurable based on RECIST and suitable for repeated measurements
- Lesions situated in a previously irradiated area are considered measurable if progression has been demonstrated in such lesions
- No more than 3 prior lines of systemic therapy (including conventional cytotoxics, targeted therapies, biologics, or other investigational systemic treatments) for inoperable/recurrent or metastatic disease in the TNBC cohort. A line of treatment in this instance refers to any systemic therapy directed at metastatic TNBC and which was discontinued due to disease progression. Treatment discontinued due to toxicity will not be counted. Systemic therapy previously delivered for hormone-receptor positive of Her2+ breast cancer (that has now switched to TNBC subtype) will not count as a prior line of treatment. Any number of prior lines of treatment for mER+BC are allowed
- At least one tumor site for which palliative RT is considered clinically appropriate. The site under consideration can be a metastatic site, or uncontrolled primary/locally recurrent disease in the breast/chest wall or in the nodes. Prior radiotherapy to the target site is allowed. Investigators should remain within departmental radiotherapy for normal tissue; exceptions should be discussed with the principal investigator (PI)
- Have provided archival tumor tissue sample or newly obtained core or excisional biopsy of a tumor lesion. Formalin-fixed, paraffin embedded (FFPE) tissue blocks are preferred to slides. Newly obtained biopsies are preferred to archived tissue. Newly-obtained is defined as a specimen obtained up to 30 days prior to initiation of treatment on day 1 of pembro. (Note: PI can waive this requirement at his discretion if specimen collection is deemed unfeasible)
- A female participant is eligible to participate if she is not pregnant, not breastfeeding, and at least one of the following conditions applies: a.) Not a woman of childbearing potential (WOCBP) OR b.) A WOCBP who agrees to follow the contraceptive guidance during the treatment period and for at least one month after the last dose of study treatment
- Absolute neutrophil count (ANC) >= 1500/uL (within 30 days prior to the start of study treatment)
- Platelets >= 100 000/uL (within 30 days prior to the start of study treatment)
- Hemoglobin >= 9.0 g/dL with no blood transfusion in the past 28 days (within 30 days prior to the start of study treatment)
- Creatinine =< 1.5 x upper limit of normal (ULN) OR measured or calculated* creatinine clearance >= 51 mL/min (glomerular filtration rate [GFR] can also be used in place of creatinine or creatinine clearance [CrCl]) (within 30 days prior to the start of study treatment) * Creatinine clearance (CrCl) should be calculated per institutional standard
- Total bilirubin =< 1.5 x ULN OR direct bilirubin =< ULN for participants with total bilirubin levels > 1.5 x ULN (within 30 days prior to the start of study treatment)
- Aspartate aminotransferase (AST) (serum glutamic oxaloacetic transaminase [SGOT]) and alanine aminotransferase (ALT) (serum glutamic pyruvic transaminase [SGPT]) =< 2.5 x ULN (=< 5 x ULN for participants with liver metastases) (within 30 days prior to the start of study treatment)
- International normalized ratio (INR) OR prothrombin time (PT) =< 1.5 x ULN unless participant is receiving anticoagulant therapy as long as PT or activated partial thromboplastin time (aPTT) is within therapeutic range of intended use of anticoagulants (within 30 days prior to the start of study treatment)
- Activated partial thromboplastin time (aPTT) =< 1.5 x ULN unless participant is receiving anticoagulant therapy as long as PT or aPTT is within therapeutic range of intended use of anticoagulants (within 30 days prior to the start of study treatment)
- Participant must agree not to breastfeed during the study or for 180 days after the last dose of study treatment
- Participant receiving corticosteroids may continue as long as their dose is stable for at least 4 weeks prior to initiating protocol therapy
- Ability to swallow (whole) and retain oral medications
Exclusion Criteria
- Receipt of > 3 lines of systemic therapy in mTNBC patients
- A WOCBP who has a positive urine pregnancy test within 72 hours or a serum pregnancy test within 14 days prior to treatment. If the urine test is positive or cannot be confirmed as negative, a serum pregnancy test will be required * Note: in the event that 72 hours have elapsed between the screening pregnancy test and the first dose of study treatment, another pregnancy test (urine or serum) must be performed and must be negative in order for subject to start receiving study medication
- Has received prior systemic anti-cancer therapy including investigational agents within 4 weeks (preferred) or a minimum of 2 weeks prior to the start of study treatment * A minimum 2-week washout required for all anti-cancer agents, including cytotoxic chemotherapeutic agents, immunotherapy, biologic therapy, and targeted therapies. A 3-4 week washout is preferred when reasonable * Note: Participants must have recovered from all averse events (AEs) due to previous therapies to =< grade 1 or baseline. Participants with =< grade 2 neuropathy may be eligible * Note: If participant received major surgery, they must have recovered adequately from the toxicity and/or complications from the intervention prior to starting study treatment
- Has received prior radiotherapy within 2 weeks of start of study treatment. Participants must have recovered from all radiation-related toxicities, not require corticosteroids, and not have had radiation pneumonitis. A 1-week washout is permitted for palliative radiation (=< 2 weeks of radiotherapy) to non-central nervous system (CNS) disease
- Has previously experienced grade 3 or higher immune-mediated adverse events from prior courses of immunotherapy
- Has received a live vaccine within 30 days prior to the first dose of study drug. Examples of live vaccines include, but are not limited to, the following: measles, mumps, rubella, varicella/zoster (chicken pox), yellow fever, rabies, Bacillus Calmette–Guérin (BCG), and typhoid vaccine. Seasonal influenza vaccines for injection are generally killed virus vaccines and are allowed; however, intranasal influenza vaccines (eg, FluMist [registered trademark]) are live attenuated vaccines and are not allowed * Note: seasonal influenza vaccines for injection are generally inactivated flu vaccines and are allowed; however, intranasal influenza vaccines (e.g., Flu-Mist) are live attenuated vaccines, and are not allowed
- Is currently participating in or has participated in a study of an investigational agent or has used an investigational device within 4 weeks (preferred, or 2 weeks minimum) prior to the first dose of study treatment. * Note: Participants who have entered the follow-up phase of an investigational study may participate as long as it has been at least 2 weeks (prefer 4 weeks) after the last dose of the previous investigational agent
- Has a diagnosis of immunodeficiency or is receiving chronic systemic steroid therapy (in dosing exceeding 10 mg daily of prednisone equivalent) or any other form of immunosuppressive therapy within 7 days prior to the first dose of study drug
- Has a known additional malignancy that is progressing or has required active treatment within the past 2 years. Note: Participants with basal cell carcinoma of the skin, squamous cell carcinoma of the skin, or carcinoma in situ (e.g. breast carcinoma, cervical cancer in situ) that have undergone potentially curative therapy are not excluded
- Has severe hypersensitivity (>= grade 3) to pembrolizumab and/or olaparib and/or any of their excipients
- Has active autoimmune disease that has required systemic treatment in the past 2 years (i.e. with use of disease modifying agents, corticosteroids or immunosuppressive drugs). Replacement therapy (eg., thyroxine, insulin, or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency, etc.) is not considered a form of systemic treatment
- Has a history of (non-infectious) pneumonitis that required steroids or has current pneumonitis
- Has an active infection requiring systemic therapy
- Has a known history of human immunodeficiency virus (HIV) * Note: No HIV testing is required
- Has a known history of hepatitis B (defined as hepatitis B surface antigen [HBsAg] reactive) or known active hepatitis C virus (defined as hepatitis C virus [HCV] ribonucleic acid [RNA] is detected) infection. Note: no testing for hepatitis B and hepatitis C is required unless mandated by local health authority
- Has a known history of active TB (Bacillus tuberculosis)
- Has a history or current evidence of any condition, therapy, or laboratory abnormality that might confound the results of the study, interfere with the subject’s participation for the full duration of the study, or is not in the best interest of the subject to participate, in the opinion of the treating investigator
- Has known psychiatric or substance abuse disorders that would interfere with cooperation with the requirements of the trial
- Is pregnant or breastfeeding, or expecting to conceive or father children within the projected duration of the study, starting with the screening visit through 120 days after the last dose of trial treatment
- Has had an allogenic tissue/solid organ transplant
- Resting electrocardiogram (ECG) indicating uncontrolled, potentially reversible cardiac conditions, as judged by the investigator (eg., unstable ischemia, uncontrolled symptomatic arrhythmia, congestive heart failure, Fridericia's correction formula (QTcF) prolongation > 500 ms, electrolyte disturbances, etc.), or patients with congenital long QT syndrome
- Persistent toxicities (> Common Terminology Criteria for Adverse Event [CTCAE 5.0] grade 2) caused by previous cancer therapy, excluding alopecia
- Patients with myelodysplastic syndrome/acute myeloid leukemia or with features suggestive of myelodysplastic syndrome (MDS)/acute myeloid leukemia (AML)
- Patients with symptomatic uncontrolled brain metastases. A scan to confirm the absence of brain metastases is not required. The patient can receive a stable dose of corticosteroids before and during the study as long as these were started at least 4 weeks prior to treatment. Patients with spinal cord compression unless considered to have received definitive treatment for this and evidence of clinically stable disease for 28 days
- Patients considered a 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, unstable spinal cord compression, superior vena cava syndrome, extensive interstitial bilateral lung disease on high resolution computed tomography (HRCT) scan or any psychiatric disorder that prohibits obtaining informed consent
- Patients unable to swallow orally administered medication and patients with gastrointestinal disorders likely to interfere with absorption of the study medication
- 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 (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 enzalutamide or phenobarbital and 3 weeks for other agents
- Major surgery within 2 weeks of starting study treatment and patients must have recovered from any effects of any major surgery
- Previous allogenic bone marrow transplant or double umbilical cord blood transplantation (dUCBT)
- Judgment by the investigator that the patient should not participate in the study if the patient is unlikely to comply with study procedures, restrictions and requirements
- Previous enrolment in the present study
Additional locations may be listed on ClinicalTrials.gov for NCT04683679.
Locations matching your search criteria
United States
New Jersey
Basking Ridge
Middletown
Montvale
New York
Commack
New York
Uniondale
West Harrison
PRIMARY OBJECTIVE:
I. To assess overall response rate (ORR) to pembrolizumab, + stereotactic body radiation therapy (SBRT), + olaparib, in non-targeted unirradiated lesions at 8 weeks using Response Evaluation Criteria in Solid Tumors (RECIST) version (v)1.1 in patients with metastatic triple-negative breast cancer (mTNBC) who have progressed on immune-checkpoint inhibitor (ICI) or are PD-L1 negative and mER+BC, which generally non-responsive to ICI.
SECONDARY OBJECTIVES:
I. To assess safety and tolerability of the combination of pembrolizumab (pembro), RT and olaparib.
II. To assess response to treatment using immune-modified (i)RECIST criteria.
III. To assess progression-free and overall survival (PFS and OS) with pembro, RT +/- olaparib.
IV. To assess local progression at the irradiated site with pembro, RT +/- olaparib.
EXPLORATORY OBJECTIVES:
I. To evaluate biomarkers of homologous recombination defects (HRD status) with response in irradiated and non-irradiated metastases.
II. To evaluate the presence of tumor infiltrating lymphocytes (TILs) and correlate this with local and abscopal responses.
III. To perform high-throughput sequencing of the TCR-beta CDR3 region in both tumor specimens and peripheral blood mononuclear cells (PBMCs) using the ImmunoSEQ immune-profiling system or single cell ribonucleic acid (scRNA) sequencing to describe T-cell repertoire dynamics.
IV. ORR from the two arms will be compared.
OUTLINE:
Beginning within days 1-14 of cycle 1, patients undergo SBRT for 3-5 fractions on sequential or alternate consecutive weekdays, at the discretion of the treating physician. Patients also receive pembrolizumab intravenously (IV) over 30 minutes on day 1 of each cycle and olaparib orally (PO) twice daily (BID) on days 1-21 for cycles 1 and 2. Treatment repeats every 3 weeks for up to 3 cycles in the absence of disease progression or unacceptable toxicity. Patients may continue on pembrolizumab every 3 weeks for a maximum of 17 cycles in the absence of disease progression or unacceptable toxicity at the discretion of the treating physician. Patients also undergo computed tomography (CT) or position emission tomography (PET)/CT, as well as blood sample collection and tumor biopsy during screening and on trial.
Upon completion of study treatment, patients are followed up at weeks 8 and 12 and then per standard of care.
Trial PhasePhase II
Trial Typetreatment
Lead OrganizationMemorial Sloan Kettering Cancer Center
Principal InvestigatorAtif Jalees Khan
- Primary ID20-505
- Secondary IDsNCI-2021-03576
- ClinicalTrials.gov IDNCT04683679