Pembrolizumab in Combination with Chemotherapy for the Treatment of Newly Diagnosed Primary Central Nervous System Lymphoma
This phase I trial tests the safety and side effects of pembrolizumab in combination with chemotherapy and how well it works in treating patients with newly diagnosed primary central nervous system lymphoma (PCNSL). Immunotherapy with monoclonal antibodies, such as pembrolizumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Chemotherapy drugs, such as methotrexate, temozolomide and rituximab, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving pembrolizumab in combination with methotrexate, rituximab and temozolomide may be safe, tolerable and/or effective in treating patients with newly diagnosed PCNSL.
Inclusion Criteria
- Subjects with pathologically confirmed newly diagnosed primary CNS diffuse large B-cell lymphoma (DLBCL) confirmed by one of the following: * Brain biopsy or resection * Cerebrospinal fluid * Vitreous fluid
- Participants must not have any evidence or history of DLBCL outside of the CNS. Participants with prior history of isolated intraocular lymphoma (primary vitreoretinal lymphoma/PVRL) who have received only local therapy are allowed
- Participants must not have received any systemic chemotherapy or whole brain radiation therapy directed to PCNSL
- Age ≥ 18 years
- Eastern Cooperative Oncology Group (ECOG) performance status ≤ 2 (Karnofsky ≥ 70% will be considered if related to PCNSL)
- Absolute neutrophil count (ANC) ≥ 1000/μL
- Platelets ≥ 100 000/μL
- Hemoglobin ≥ 9.0 g/dL or ≥ 5.6 mmol/L (Criteria must be met without erythropoietin dependency and without packed red blood cell [pRBC] transfusion within last 2 weeks)
- Creatinine ≤ 1.5 x upper limit of normal (ULN) OR measured or calculated creatinine clearance ≥ 40 mL/min for participant with creatinine levels > 1.5 x institutional ULN (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
- 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)
- International normalized ratio (INR) OR prothrombin time (PT) and 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
- Participants must have negative HIV serology
- Participants must have no history of organ transplantation or ongoing immunosuppressant therapy
- Women of child-bearing potential (WOCBP), defined as all women physiologically capable of becoming pregnant, must have a negative serum pregnancy within 72 hours prior to registration. Women in the following categories are not considered WOCBP: * Premenarchal * Premenopausal female with 1 of the following: ** Documented hysterectomy ** Documented bilateral salpingectomy ** Documented bilateral oophorectomy * Note: Documentation can come from the site personnel’s review of the participant’s medical records, medical examination, or medical history interview * Post-menopausal female is defined as no menses for 12 months without an alternative medical cause. * A high follicle stimulating hormone (FSH) level in the postmenopausal range may be used to confirm a postmenopausal state in women not using hormonal contraception or hormonal replacement therapy (HRT). However, in the absence of 12 months of amenorrhea, confirmation with two FSH measurements in the postmenopausal range is required * Females on HRT and whose menopausal status is in doubt will be required to use one of the non hormonal highly effective contraception methods if they wish to continue their HRT during the study. Otherwise, they must discontinue HRT to allow confirmation of postmenopausal status before study enrollment
- Women of child-bearing potential (WOCBP), must agree to use a highly effective method of contraception consistently and correctly as described below during study treatment and for 120 days after study discontinuation * Highly effective contraceptive methods that are user dependent (failure rate of < 1% per year when used consistently and correctly.) NOTES: Typical use failure rates are lower than perfect-use failure rates (i.e. when used consistently and correctly). ** Combined (estrogen- and progestogen- containing) hormonal contraception. NOTES: If hormonal contraception efficacy is potentially decreased due to interaction with study treatment, condoms must be used in addition to the hormonal contraception during the treatment period and for at least during study treatment and for 120 days after study discontinuation after the last dose of study treatment. If locally required, in accordance with Clinical Trial Facilitation Group (CTFG) guidelines, acceptable contraceptive implants are limited to those which inhibit ovulation *** Oral *** Intravaginal *** Transdermal *** Injectable ** Progestogen-only hormonal contraception. NOTES: If hormonal contraception efficacy is potentially decreased due to interaction with study treatment, condoms must be used in addition to the hormonal contraception during the treatment period and for at least during study treatment and for 120 days after study discontinuation after the last dose of study treatment. If locally required, in accordance with Clinical Trial Facilitation Group (CTFG) guidelines, acceptable contraceptive implants are limited to those which inhibit ovulation *** Oral *** Injectable * Highly effective methods that have low user dependency (failure rate of <1% per year when used consistently and correctly) ** Progestogen-only contraceptive implant. NOTES: If hormonal contraception efficacy is potentially decreased due to interaction with study treatment, condoms must be used in addition to the hormonal contraception during the treatment period and for at least during study treatment and for 120 days after study discontinuation after the last dose of study treatment. If locally required, in accordance with Clinical Trial Facilitation Group (CTFG) guidelines, acceptable contraceptive implants are limited to those which inhibit ovulation ** Intrauterine hormone-releasing system (IUS). NOTES: If hormonal contraception efficacy is potentially decreased due to interaction with study treatment, condoms must be used in addition to the hormonal contraception during the treatment period and for at least during study treatment and for 120 days after study discontinuation after the last dose of study treatment ** Intrauterine device (IUD) ** Bilateral tubal occlusion ** Vasectomized partner (A vasectomized partner is a highly effective contraception method provided that the partner is the sole male sexual partner of the WOCBP and the absence of sperm has been confirmed. If not, an additional highly effective method of contraception should be used) ** Sexual abstinence (Sexual abstinence is considered a highly effective method only if defined as refraining from heterosexual intercourse during the entire period of risk associated with the study treatment. The reliability of sexual abstinence needs to be evaluated in relation to the duration of the study and the preferred and usual lifestyle of the participant)
- Male participants must to use at least one of the following methods of contraception starting with the first dose of study therapy through 120 days after the last dose of therapy: * Be abstinent from penile-vaginal intercourse as their usual and preferred lifestyle (abstinent on a long term and persistent basis) and agree to remain abstinent * Use a male condom plus partner use of a contraceptive method with a failure rate of < 1% per year when having penile-vaginal intercourse with a woman of childbearing potential who is not currently pregnant. * Note: Men with a pregnant or breastfeeding partner must agree to remain abstinent from penile-vaginal intercourse or use a male condom during each episode of penile penetration
Exclusion Criteria
- Participants who cannot undergo MRI
- Intraocular PCNSL without evidence of brain or spinal cord disease
- Participants who are receiving any other investigational agents
- History of allergic reactions or severe hypersensitivity reactions (≥ grade 3) attributed to compounds of similar chemical or biologic composition to study agents and/or any of its excipients
- Has received prior therapy with an anti-PD-1, anti-PD-L1, or anti-PD-L2 agent or with an agent directed to another stimulatory or co-inhibitory T-cell receptor (eg, CTLA-4, OX-40, CD137)
- Has active autoimmune disease requiring immunosuppressives or steroids
- 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®) are live attenuated vaccines and are not allowed. COVID19 vaccines are allowed
- Has a known additional malignancy that is progressing or has required active treatment within the past 3 years. Note: Participants with basal cell carcinoma of the skin, squamous cell carcinoma of the skin, transitional cell carcinoma of urothelial cancer, or carcinoma in situ (e.g. breast carcinoma, cervical cancer in situ) that have undergone potentially curative therapy are not excluded
- Has a history of (non-infectious) pneumonitis that required steroids or has current pneumonitis
- Patient has poorly controlled diabetes mellitus with a glycosylated hemoglobin > 8% or poorly controlled steroid-induced diabetes mellitus with a glycosylated hemoglobin of > 8%
- Unable to swallow capsules or disease significantly affecting gastrointestinal function, such as malabsorption syndrome, resection of the stomach or small bowel, or complete bowel obstruction
- Enzyme-inducing antiepileptic drugs (EIAED) need to be discontinued and switched to a non-EIAED 2 weeks prior to starting on trial drugs
- 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] RNA [qualitative] is detected) infection
- Has a known history of active TB (bacillus tuberculosis)
- Has a diagnosis of immunodeficiency or is receiving chronic systemic steroid therapy (in dosing exceeding 10 mg daily of prednisone equivalent)
- Patients who have undergone prior allogeneic stem cell transplant
- Patients who have large pleural effusions, ascites or full body edema
- 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
Study sponsor and potential other locations can be found on ClinicalTrials.gov for NCT06475235.
Locations matching your search criteria
United States
Massachusetts
Boston
PRIMARY OBJECTIVE:
I. To assess the feasibility and confirming the dose of combining pembrolizumab with chemotherapy in newly diagnosed PCNSL.
SECONDARY OBJECTIVES:
I. To assess the anti-tumor activity of the combination of pembrolizumab and chemotherapy, as determined complete response rate (CRR) at the completion of induction therapy.
II. To assess the overall response rate (ORR) as measured by total number of complete and partial responses at the completion of induction therapy.
III. To assess the clinical efficacy of the combination of pembrolizumab and chemotherapy in newly diagnosed PCNSL as measured by progression-free survival rate at 2 years (PFS-2y).
IV. To assess duration of response (DOR), progression-free survival (PFS) and overall survival (OS) in patients treated with the combination of pembrolizumab and chemotherapy.
V. To assess tolerability throughout study therapy with pembrolizumab and chemotherapy, including beyond the maximum tolerated dose (MTD) interval with the following measure of cumulative treatment-related toxicities:
Va. Frequency of toxicities leading to missed doses or delays;
Vb. Percentage of actual planned dosage administration;
Vc. Percentage of patients that discontinue study drugs due to treatment-related toxicity.
EXPLORATORY OBJECTIVES:
I. To assess tumor tissue and cerebrospinal fluid (CSF) specifically for recurrent somatic mutations (such as MYD88, CD79B, CARD11, BCL2), key copy number alterations (9p24.1) and structural rearrangements associated with PCNSL in addition to PDL1/PDL2 status and correlate with response or resistance to treatment.
II. To assess peripheral blood and CSF immune cell subsets by conventional flow cytometry, single cell ribonucleic acid sequencing (RNAseq), circulating tumor deoxyribonucleic acid (DNA) (ctDNA) and correlate with response or resistance to treatment.
III. To evaluate neurologic function and response of patients on treatment using the Neurologic Assessment in Neuro-Oncology (NANO) scale.
IV. To correlate apparent diffusion coefficient (ADC)/diffusion-weighted imaging (DWI)/perfusion magnetic resonance (MR) imaging to clinical response.
V. To evaluate neurocognition at baseline and following treatment using International Primary Central Nervous System Lymphoma Collaborative Group (IPCG) cognitive battery.
OUTLINE:
INDUCTION: Patients receive methotrexate intravenously (IV) over 4 hours on day 1 of each cycle. Patients also receive pembrolizumab IV over 30 minutes on day 10 of cycles 1, 4 and 7, temozolomide orally (PO) on days 7-11 of cycles 1, 3, 5, and 7 and rituximab IV on days 3 and 10 of cycles 1-3. Cycles repeat every 14 days for up to 8 cycles in the absence of disease progression or unacceptable toxicity.
CONSOLIDATION: Patients receive pembrolizumab IV over 30 minutes on day 1 of each cycle. Cycles repeat every 42 days for up to 15 cycles in the absence of disease progression or unacceptable toxicity.
Additionally, patients undergo CSF and blood sample collection and magnetic resonance imaging (MRI) throughout the study as well as computed tomography (CT) or positron emission tomography (PET)/CT during screening.
After completion of study treatment, patients are followed up at 30 days and then every 12 weeks.
Trial PhasePhase I
Trial Typetreatment
Lead OrganizationDana-Farber Harvard Cancer Center
Principal InvestigatorLakshmi Nayak
- Primary ID24-246
- Secondary IDsNCI-2024-05884
- ClinicalTrials.gov IDNCT06475235