Pembrolizumab, Olaparib, and Temozolomide for People With Glioma

A Phase II Study of Pembrolizumab, Olaparib, and Temozolomide in Patients With Glioma

This study will test the safety and effectiveness of a combination of pembrolizumab, olaparib, and temozolomide to see how well these drugs work when given together in people with a glioma that either did not respond to previous treatment or came back after treatment.

Study Overview

• Status: Recruiting
• Conditions: Glioma
• Intervention / Treatment: Drug: Pembrolizumab; Combination product: Olaparib and Temozolomide

• Study Type: Interventional
• Enrollment (Estimated): 57
• Phase: Phase 2

Contacts and Locations

• Study Contact: Name: Lauren Schaff, MD; Phone Number: 212-610-0485; Email: schaffl@mskcc.org
• Study Contact Backup: Name: Thomas Kaley, MD; Phone Number: 212-639-5122

Study Locations

• United States
  • Connecticut
    • Hartford, Connecticut, United States, 06102
      • Recruiting
      • Hartford Healthcare Alliance (Data collection only)
      • Contact: Alexis Demopoulos, MD; Phone Number: 860-696-5169
  • Florida
    • Miami, Florida, United States, 33143
      • Recruiting
      • BAPTIST ALLIANCE - MCI (Data Collection Only)
      • Contact: Manmeet Ahluwalia, MD; Phone Number: 786-613-4332
  • New Jersey
    • Basking Ridge, New Jersey, United States, 07920
      • Recruiting
      • Memorial Sloan Kettering Basking Ridge (Limited Protocol Activities)
      • Contact: Lauren Schaff, MD; Phone Number: 212-610-0485
    • Middletown, New Jersey, United States, 07748
      • Recruiting
      • Memorial Sloan Kettering Monmouth (Limited protocol activities)
      • Contact: Lauren Schaff, MD; Phone Number: 212-610-0485
    • Montvale, New Jersey, United States, 07645
      • Recruiting
      • Memorial Sloan Kettering Bergen (Limited protocol activities)
      • Contact: Lauren Schaff, MD; Phone Number: 212-610-0485
  • New York
    • Commack, New York, United States, 11725
      • Recruiting
      • Memorial Sloan Kettering Suffolk -Commack (Limited Protocol Activities)
      • Contact: Lauren Schaff, MD; Phone Number: 212-610-0485
    • Harrison, New York, United States, 10604
      • Recruiting
      • Memorial Sloan Kettering Westchester (Limited protocol activities)
      • Contact: Lauren Schaff, MD; Phone Number: 212-610-0485
    • New York, New York, United States, 10065
      • Recruiting
      • Memorial Sloan Kettering Cancer Center (All Protocol Activities)
      • Contact: Lauren Schaff, MD; Phone Number: 212-610-0485
    • Uniondale, New York, United States, 11553
      • Recruiting
      • Memorial Sloan Kettering Nassau (Limited Protocol Activities)
      • Contact: Lauren Schaff, MD; Phone Number: 212-610-0485
  • Pennsylvania
    • Allentown, Pennsylvania, United States, 18103
      • Recruiting
      • Lehigh Valley Health Network (Data Collection Only)
      • Contact: Tara Morrison, MD; Phone Number: 610-402-7880

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

Safety Lead-In and Cohort A specific inclusion:

1. Histologically confirmed grade II or III IDH-mutated glioma (absence of known CDKN2A/B deletion) that has recurred after first line therapy (consisting of at least maximum feasible surgical resection). There is no limit on the number of prior therapies or types of therapies patients can have received.
2. Measurable disease by RANO criteria
3. Stable dose of corticosteroids for ≥ 4 weeks prior to baseline MRI. Steroid dose not to exceed 2mg/day dexamethasone (or equivalent).

Cohort B specific inclusion:

1. Histologically confirmed IDH-wildtype glioma that has recurred following therapy (consisting of at least maximum feasible surgical resection and radiation therapy).
2. Standard of care next generation sequencing via a CLIA certified platform must be available or planned and at a minimum include IDH status.
3. Patient with known or suspected deleterious mutations in at least 1 of the specified 15 genes involved in homologous recombination repair (BRCA1, BRCA2, ATM, BARD1, BRIP1, CDK12, CHEK1, CHEK2, FANCL, PALB2, PPP2R2A, RAD51B, RAD51C, RAD51D, and RAD54L)
4. Measurable disease by RANO criteria
5. Stable dose of corticosteroids for ≥ 4 weeks prior to baseline MRI. Steroid dose not to exceed 2mg/day dexamethasone (or equivalent).

All Cohorts:

1. Patients or their Legally Authorized Representative (LAR) must provide written informed consent prior to any screening procedures
2. Age 18 or older
3. ECOG 0 or 1 (KPS ≥ 70) (A lower KPS may be acceptable with prior approval from PI)
4. Willing and able to comply with scheduled visits, treatment plan, and laboratory tests
5. Patient must be able to swallow and retain oral medication
6. Patient must have adequate organ function as defined in the following table. Stable dose of corticosteroids for ≥ 5 days prior to baseline MRI.
7. Before starting study treatment, patients must have recovered to grade 1 from prior therapy (except for residual alopecia or grade 2 peripheral neuropathy).
8. At least 5 half-lives must have elapsed since any prior signaling pathway modulators (e.g., EGFR, FGFR, or other tyrosine kinase inhibitors), at least 3 weeks must have elapsed since temozolomide, 4 weeks must have elapsed since carboplatin or cisplatin, and at least 6 weeks must have elapsed from nitrosoureas (e.g., BCNU, CCNU). At least 5 half-lives much have elapsed since prior IDH-inhibitor use. In general, at least 4 weeks must have elapsed from any other anticancer drug therapy (e.g. bevacizumab).
9. Patients must be able to undergo contrast-enhanced MRI scans.
10. Patients must have shown unequivocal evidence for tumor progression by MRI in comparison to a prior scan
11. At least 12 weeks elapsed since prior radiotherapy
12. Life expectancy greater than 12 weeks
13. A woman of childbearing potential (WOCBP) must not have a positive urine pregnancy test within 72 hours prior to allocation.Women of reproductive potential must agree to use highly effective methods of birth control during the period of therapy and for 12 months after the last dose of the study therapy.
14. Male participants must agree to use a contraception as detailed in Appendix 3 of this protocol during the treatment period and for at least 120 days following the last dose of study treatment and refrain from donation sperm during this period.

15. A female participant is eligible to participate if she is not pregnant, not breastfeeding, and at least one of the following conditions applies:

    i. Not a WOCBP or ii. A WOCBP who agrees to follow the contraceptive guidance during the treatment period for at least 120 days after the last dose of study treatment. Note: Cases of pregnancy that occur during maternal exposures to treatment should be reported. If a patient is determined to be pregnant following treatment initiation, treatment must be discontinued immediately.

16. Women must agree not to breast feed while on therapy and for at least 120 days following the last dose of study drug.

    • Hematological Absolute neutrophil count (ANC) ≥1500/μL Platelets ≥100 000/μL Hemoglobin ≥9.0 g/dL or ≥5.6 mmol/L
    • Renal Creatinine OR Measured or calculated creatinine clearance (GFR can also be used in place of creatinine or CrCl) ≤1.5 × ULN OR ≥30 mL/min for participant with creatinine levels <1.5 × institutional ULN
    • Hepatic Total bilirubin ≤1.5 ×ULN OR direct bilirubin ≤ULN for participants with total bilirubin levels >1.5 × ULN AST (SGOT) and ALT (SGPT) ≤2.5 × ULN (≤5 × ULN for participants with liver metastases)
    • Coagulation International normalized ratio (INR) OR prothrombin time (PT) Activated partial thromboplastin time (aPTT) ≤1.5 × ULN unless participant is receiving anticoagulant therapy as long as PT or aPTT is within therapeutic range of intended use of anticoagulants

Exclusion Criteria:

1. No limit on number of prior therapies
2. Evidence of significant intracranial hemorrhage
3. No other investigational or standard anti-tumor therapy allowed
4. Patients must not have a known history of allergic reaction attributed to study drugs or compounds of similar chemical or biologic composition unless allergic reaction was managed by pre-medication.
5. Patients must not have a serious pre-existing medical condition or uncontrolled intercurrent illness that would preclude participation in this study (for example, uncontrolled ventricular arrhythmia, interstitial lung disease, severe dyspnea at rest of requiring oxygen therapy, history of major surgical resection involving the stomach or bowel, or pre-existing Crohn's disease or ulcerative colitis or other autoimmune disease,) or psychiatric illness/social situations that would limit compliance with study requirements
6. Patients must not have a diagnosis of immunodeficiency or be 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.
7. Patients must not have an active systemic fungal and/or known viral infection (for example human immunodeficiency virus antibodies, hepatitis B surface antigen, or hepatitis C antibodies).
8. Patients must not have a history of active tuberculosis.
9. Patients must not have an active infection requiring systemic therapy
10. Patients must not have known history of, or any evidence of active, non-infectious pneumonitis
11. Concomitant use of known strong CYP3A inhibitors (itraconazole, telithromycin, clarithromycin, protease inhibitors boosted with ritonavir or cobicistat, indinavir, saquinavir, nelfinavir, boceprevir, telaprevir)
12. Concomitant use of known strong CYP3A inducers (phenobarbital, enzalutamide, phenytoin, rifampicin, rifabutin, rifapentine, carbamazepine, nevirapine, and St. John's Wort)
13. A woman of childbearing potential (WOCBP) who has a positive urine pregnancy test within 72 hours prior to allocation.
14. Patients must not have other active concurrent malignancy. Exceptions include basal cell carcinoma of the skin or squamous cell carcinoma of the skin that has undergone potentially curative therapy or in situ cervical cancer.
15. Patients must not have active autoimmune disease that required systemic treatment in the past 2 years (i.e. with use of disease modifying agents, corticosteroids, or immunosuppressive drugs). Replacement therapy (e.g. thyroxine, insulin, or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency, etc) is not considered a form of systemic treatment.
16. Patients must not have received a live vaccine within 30 days of planned start of study (Note: Seasonal influenza vaccines for injection are generally inactivated flu vaccines and are allowed; however, intranasal influenza vaccines are live attenuated vaccine and are not allowed)
17. Concurrent treatment on another clinical trial. Supportive care trials or nontherapeutic trials (i.e. quality of life) are allowed.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Non-Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Recurrent enhancing grade II and III IDH-mutated gliomas that have failed previous therapy; All patients will receive pembrolizumab for two cycles prior to the addition of olaparib and temozolomide. Combination olaparib and temozolomide will be added in cycle 3. Combination therapy will continue through cycle 11 (cycles 3-11 = 27 weeks or approximately 6 months). Patients will then continue on pembrolizumab maintenance for a maximum of 35 cycles (two years) or until progression of disease or unacceptable toxicity.	Drug: Pembrolizumab; Patients will receive pembrolizumab 200mg IV on day 1 (± 3days) of each cycle. Pembrolizumab will continue every 21 days (± 3 days) throughout the trial.; Combination product: Olaparib and Temozolomide; Olaparib and temozolomide will begin on cycle 3 day 1 and continue through cycle 11. Olaparib will be dosed 200mg orally twice a day (bid) days 1-7 each cycle. Temozolomide 50 mg/m2 will be administered orally days 1-7 each cycle.
Experimental: Recurrent IDH-wildtype gliomas and homologous recombination deficiency (HRD).; Five patients will receive pembrolizumab for two cycles prior to the addition of olaparib and temozolomide. Combination olaparib and temozolomide will be added in cycle 3. Combination therapy will continue through cycle 11 (cycles 3-11 = 27 weeks or approximately 6 months). Patients will then continue on pembrolizumab maintenance for a maximum of 35 cycles (two years) or until progression of disease or unacceptable toxicity. This cohort will be analyzed descriptively.	Drug: Pembrolizumab; Patients will receive pembrolizumab 200mg IV on day 1 (± 3days) of each cycle. Pembrolizumab will continue every 21 days (± 3 days) throughout the trial.; Combination product: Olaparib and Temozolomide; Olaparib and temozolomide will begin on cycle 3 day 1 and continue through cycle 11. Olaparib will be dosed 200mg orally twice a day (bid) days 1-7 each cycle. Temozolomide 50 mg/m2 will be administered orally days 1-7 each cycle.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
overall response rate (Cohort A)	The response will be determined as outlined in the RANO and iRANO.	up to 2 years

Collaborators and Investigators

• Sponsor: Memorial Sloan Kettering Cancer Center
• Collaborators: Merck Sharp & Dohme LLC
• Investigators: Principal Investigator: Lauren Schaff, MD, Memorial Sloan Kettering Cancer Center

Publications and helpful links

Helpful Links

• Memorial Sloan Kettering Cancer Center

Study record dates

Study Major Dates

• Study Start (Actual): January 14, 2022
• Primary Completion (Estimated): January 1, 2027
• Study Completion (Estimated): January 1, 2027

Study Registration Dates

• First Submitted: December 27, 2021
• First Submitted That Met QC Criteria: December 27, 2021
• First Posted (Actual): January 12, 2022

Study Record Updates

• Last Update Posted (Actual): March 6, 2026
• Last Update Submitted That Met QC Criteria: March 5, 2026
• Last Verified: March 1, 2026

More Information

Terms related to this study

• Keywords: Temozolomide; Pembrolizumab; Olaparib; 20-091
• Additional Relevant MeSH Terms: Neoplasms; Neoplasms by Histologic Type; Neoplasms, Glandular and Epithelial; Neoplasms, Neuroepithelial; Neuroectodermal Tumors; Neoplasms, Germ Cell and Embryonal; Neoplasms, Nerve Tissue; Glioma; Organic Chemicals; Heterocyclic Compounds, 1-Ring; Heterocyclic Compounds; Azoles; Dacarbazine; Triazenes; Imidazoles; Temozolomide; pembrolizumab; olaparib
• Other Study ID Numbers: 20-091

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: YES
• IPD Plan Description: Memorial Sloan Kettering Cancer Center supports the international committee of medical journal editors (ICMJE) and the ethical obligation of responsible sharing of data from clinical trials. The protocol summary, a statistical summary, and informed consent form will be made available on clinicaltrials.gov when required as a condition of Federal awards, other agreements supporting the research and/or as otherwise required. Requests for deidentified individual participant data can be made beginning 12 months after publication and for up to 36 months post publication. Deidentified individual participant data reported in the manuscript will be shared under the terms of a Data Use Agreement and may only be used for approved proposals. Requests may be made to: crdatashare@mskcc.org

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No
• product manufactured in and exported from the U.S.: No