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About
This randomized phase I/II trial studies the side effects and best dose of pembrolizumab when given together with stereotactic body radiation therapy or non-stereotactic wide-field radiation therapy (conventional radiation therapy) and to see how well they work in treating patients with non-small cell lung cancer. 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. Radiation therapy uses high-energy x-rays to kill tumor cells and shrink tumors. Stereotactic body radiation therapy uses special equipment to position a patient and deliver radiation to tumors with high precision. This method can kill tumor cells with fewer doses over a shorter period and cause less damage to normal tissue. Giving pembrolizumab together with radiation therapy may kill more tumor cells.
Full description
PRIMARY OBJECTIVES:
I. To evaluate the safety and toxicity profile of intravenous MK-3475 (pembrolizumab) administered in combination with stereotactic body radiation therapy (SBRT) targeting 1-4 liver or thoracic lesion(s) in patients with metastatic non-small cell lung cancer (NSCLC). (Phase I) II. To evaluate the safety and toxicity profile of intravenous MK-3475 administered in combination with non-stereotactic wide-field radiation therapy (WFRT) targeting 1-4 liver or thoracic lesion(s) in patients with metastatic NSCLC. (Phase I) III. To determine the maximum tolerated dose (MTD) and dose limiting toxicities (DLTs) of MK-3475 and SBRT combination therapy. (Phase I) IV. To determine the maximum tolerated dose (MTD) and dose limiting toxicities (DLTs) of MK-3475 and WFRT combination therapy. (Phase I) V. To determine the rate of out-of-field objective responses (either complete response [CR] or partial response [PR]) of the non-irradiated disease sites. (Phase II)
SECONDARY OBJECTIVE:
I. To determine whether the addition of radiation therapy (XRT) to MK-3475 can improve the progression free survival (PFS) rate compared to MK-3475 alone. (Phase II)
OUTLINE: This is a phase I, dose-escalation study of pembrolizumab followed by a phase II study.
PHASE I: Patients are assigned to 1 of 2 treatment groups.
GROUP I: Patients who exhibit a lung lesion of size and location amenable to SBRT receive pembrolizumab intravenously (IV) over 30 minutes on day 1. Patients also receive SBRT in 4 fractions daily on days 2-5 or either intensity modulated radiation therapy (IMRT), proton beam radiation therapy (PBRT), or 3 dimensional conformation radiation therapy (3D-CRT) in 15 fractions total concurrent with pembrolizumab administration on days 1-19. Treatment repeats every 21 days for up to 16 courses in the absence of disease progression or unacceptable toxicity.
GROUP II: Patients who exhibit a lung lesion of size or location not amenable to SBRT, but amenable to WFRT receive pembrolizumab as in Group I and either IMRT, PBRT, or 3D-CRT in 15 fractions total concurrent with pembrolizumab administration.
PHASE II: Patients for whom SBRT is recommended are randomized to Group 1 or 2, patients for whom conventional radiation therapy is recommended are randomized to Group 3 or 4, and patients with lesions amenable to SBRT or WFRT are assigned to Group 5.
GROUP I: Patients who exhibit a lung lesion with size and location amenable to SBRT receive pembrolizumab IV on day 1 and SBRT on days 44-47 or IMRT, PBT, or 3D-CRT on days 43-61. Treatment with pembrolizumab repeats every 21 days for up to 16 courses in the absence of disease progression or unacceptable toxicity.
GROUP II: Patients who exhibit a lung lesion with size and location amenable to SBRT receive pembrolizumab IV as in Group I without XRT. At the first planned efficacy evaluation (5 weeks), patients exhibiting progressive disease (PD) are treated with SBRT concurrent with the remaining cycles of pembrolizumab. In the event that lesion size has progressed to the point where the attending physician no longer considers SBRT safe, then the patient will be salvaged with IMRT, PBRT, or 3D-CRT and analyzed as part of the fourth treatment group.
GROUP III: Patients who exhibit a lung lesion with size and location not amenable to SBRT, but amenable to WFRT receive pembrolizumab IV as in Group I and IMRT, PBRT, or 3D-CRT on days 43-61.
GROUP IV: Patients who exhibit a lung lesion with size and location not amenable to SBRT, but amenable to WFRT receive pembrolizumab IV as in Group I without XRT. The decision on when to start XRT will be assessed first at week 5 (after the second dose of pembrolizumab). If a patient has PD based on immune response related criteria (irRC) then XRT will be delivered after the third dose of pembrolizumab, while patients with stable disease (SD) or PR will not start XRT and will continue to be followed. These patients will then have follow up computed tomography (CT) scans 5 weeks after course 3 three and then approximately every 3 months for the remainder of the trial; any patient at this point with PD will then have XRT delivered with the sixth dose of pembrolizumab.
GROUP V: Patients with lesions amenable to SBRT or WFRT receive pembrolizumab IV as in Group I. Patients also receive either IMRT, PBRT, or 3D-CRT in 15 fractions to the primary lesions and low dose radiation therapy to other lesions on days 43-61 or SBRT in 4 fractions to primary lesions and low dose radiation therapy to other lesions on days 44-47.
After completion of study treatment, patients are followed up at 30 days and then every 12 weeks.
Enrollment
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Inclusion criteria
Exclusion criteria
Is currently participating in or has participated in a study of an investigational agent (except glutamine) or using an investigational device within 4 weeks of the first dose of treatment or 5 half lives, whichever is shorter
Has a diagnosis of immunodeficiency or is receiving systemic steroid therapy or any other form of immunosuppressive therapy within 7 days prior to the first dose of trial treatment; unless the steroid therapy is for physiological replacement
Has a diagnosis of active scleroderma, lupus, or other autoimmune disease which by the opinion of the treating radiation oncologist precludes safe radiation therapy
Has had prior radiation therapy to all available thoracic and liver lesions such that additional radiation therapy is unsafe by the opinion of the treating radiation oncologist
Has had a prior monoclonal antibody within 4 weeks or 5 half-lives, which ever is shorter, prior to study day 1 or who has not recovered (i.e., =< grade 1 or at baseline) from adverse events due to agents administered more than 4 weeks earlier
Has had prior chemotherapy or targeted small molecule therapy within 2 weeks prior to study day 1 or who has not recovered (i.e., =< grade 1 or at baseline) from adverse events due to a previously administered agent
Has a known additional malignancy that is progressing or requires active treatment; exceptions include basal cell carcinoma of the skin, squamous cell carcinoma of the skin, or in situ cervical cancer that has undergone potentially curative therapy
Has known active central nervous system (CNS) metastases and/or carcinomatous meningitis; subjects with previously treated brain metastases may participate provided they are stable (without evidence of progression by imaging for at least four weeks prior to the first dose of trial treatment and any neurologic symptoms have returned to baseline), have no evidence of new or enlarging brain metastases, and are not using steroids for at least 7 days prior to trial treatment
Has an active autoimmune disease requiring systemic treatment within the past 3 months or a documented history of clinically severe autoimmune disease, or a syndrome that requires systemic steroids or immunosuppressive agents; subjects with vitiligo or resolved childhood asthma/atopy would be an exception to this rule; subjects that require intermittent use of bronchodilators or local steroid injections would not be excluded from the study; subjects with hypothyroidism stable on hormone replacement or Sjogren's syndrome will not be excluded from the study
Has evidence of interstitial lung disease or active, non-infectious pneumonitis
Has an active infection requiring systemic therapy or hospital admission
Has a history or current evidence of any condition, therapy, or laboratory abnormality that might confound the results of the trial, interfere with the subject's participation for the full duration of the trial, 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 trial, starting with the pre-screening or screening visit through 120 days after the last dose of trial treatment
Has a known history of human immunodeficiency virus (HIV) (HIV 1/2 antibodies)
Has known active hepatitis B (e.g., hepatitis B virus HBsAg surface protein antigen [HBsAg] reactive) or hepatitis C (e.g., hepatitis C virus [HCV] ribonucleic acid [RNA] [qualitative] is detected)
Has received a live vaccine within 30 days prior to the first dose of trial treatment
Symptomatic brain metastasis
Has experienced a dose limiting toxicity on treatment with either prior radiation or anti programmed cell death 1 (PD-1) or programmed cell death 1 ligand 1 (PD-L1) inhibitor therapy
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126 participants in 7 patient groups
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Data sourced from clinicaltrials.gov
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