KEYMAKER-U01 Substudy 2: Efficacy and Safety Study of Pembrolizumab (MK-3475) When Used With Investigational Agents in Treatment-naïve Participants With Anti-programmed Cell Death Receptor Ligand 1 (PD-L1) Positive Advanced Non-small Cell Lung Cancer (NSCLC) (MK-3475-01B/KEYMAKER-U01B)

Study Overview
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Brief Summary
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The purpose of this study is to assess the efficacy and safety of pembrolizumab (MK-3475) in combination with MK-4830 in treatment-naïve participants with advanced squamous or non-squamous NSCLC that is PD-L1 positive. This study is one of three pembrolizumab substudies being conducted under one pembrolizumab umbrella master protocol (MK-3475-U01/KEYMAKER-U01). The pembrolizumab+ MK-0482 arm was added with Amendment 6.

Detailed Description
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The master screening protocol is MK-3475-U01(KEYMAKER-U01) - NCT04165798

Official Title
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KEYMAKER-U01 Substudy 2: A Phase 2, Umbrella Study With Rolling Arms of Investigational Agents in Combination With Pembrolizumab in Treatment Naïve Patients With PD-L1 Positive Advanced Non-small Cell Lung Cancer (NSCLC)

Conditions
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Carcinoma, Non-Small-Cell Lung

Intervention / Treatment
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* Biological: Pembrolizumab
* Biological: MK-4830
* Biological: MK-0482


Participation Criteria
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Eligibility Criteria
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Inclusion: Has a histologically- or cytologically-confirmed diagnosis of Stage IV squamous or non-squamous NSCLC Has non-squamous NSCLC and is not eligible for an approved targeted therapy Is able to provide archival tumor tissue sample collected either within 5 years or within the interval from completion of last treatment but before entering the screening period or newly obtained core or excisional biopsy of a tumor lesion not previously irradiated obtained within 90 days of treatment initiation Has not received prior systemic treatment for metastatic NSCLC Has programmed cell death ligand 1 (PD-L1) tumor proportion score (TPS) ≥1% Is able to complete all screening procedures within the 35-day screening window. Male participants must agree to use contraception and refrain from donating sperm during the treatment period and for at least 120 days after the last dose of study treatment Female participants must not be pregnant or breastfeeding, and at least one of the following conditions apply: Not a woman of childbearing potential (WOCBP) OR A WOCBP who agrees to use contraception during the treatment period and for at least 120 days after the last dose of study treatment Has adequate organ function within 10 days of initiation of study treatment Exclusion Criteria: Has a diagnosis of small cell lung cancer 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 before the first dose of study treatment Has a known additional malignancy that is progressing or has required active treatment within the past 2 years Has known active central nervous system (CNS) metastases and/or carcinomatous meningitis Has an active autoimmune disease that has required systemic treatment in the past 2 years Has a history of (noninfectious) pneumonitis that required steroids or has current pneumonitis Has an active infection requiring systemic therapy Has clinically significant cardiac disease, including unstable angina, acute myocardial infarction within 6 months from Day 1 of study treatment, or New York Heart Association Class III or IV congestive heart failure Has a known history of Human Immunodeficiency Virus (HIV) infection Has a known history of Hepatitis B or known active Hepatitis C virus infection Has known psychiatric or substance abuse disorders that would interfere with cooperating with the requirements of the study Has had major surgery <3 weeks before the first dose of study treatment Has received prior radiation therapy to the lung that is >30 Gray (Gy) within 6 months of the first dose of study treatment Has received any prior immunotherapy and was discontinued from that treatment due to a severe or worse immune-related adverse event (irAE) Has had chemotherapy or biological cancer therapy within 4 weeks before the first dose of study treatment or has not recovered to Common Terminology Criteria for Adverse Events (CTCAE) Grade 1 or better from the AEs due to cancer therapeutics administered more than 4 weeks before the first dose of study treatment (including participants who had previous immunomodulatory therapy with residual irAEs) Has received a live vaccine within 30 days before the first dose of study treatment. Any licensed COVID-19 vaccine (including for Emergency Use) in a particular country is allowed as long as they are messenger ribonucleic acid (mRNA) vaccines, adenoviral vaccines, or inactivated vaccines. Investigational vaccines (ie, those not licensed or approved for Emergency Use) are not allowed Has received prior systemic cytotoxic chemotherapy or other targeted or biological antineoplastic therapy for metastatic disease. Has received prior therapy with an anti-programmed cell death receptor 1 (PD-1), anti-programmed cell death receptor ligand 1 (PD-L1), or anti-programmed cell death receptor ligand 2 (PD-L2) agent or prior therapy targeting other immuno-regulatory receptors or mechanisms Is currently participating in or has participated in a study of an investigational agent or has used an investigational device within 4 weeks before the first dose of study treatment Has had a severe hypersensitivity reaction to treatment with monoclonal antibodies (including pembrolizumab) and/or any of their excipients 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 study treatment Has had an allogenic tissue/solid organ transplant

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

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


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Pembrolizumab + MK-4830<br>On Day 1 of each 3-week cycle, participants receive pembrolizumab 200 mg intravenously (IV) PLUS MK-4830 IV for a maximum of 35 cycles (approximately 2 years) | Biological: Pembrolizumab<br>* IV infusion<br>* Other names: SCH 900475;Biological: MK-4830<br>* IV infusion<br>|
| Experimental: Pembrolizumab + MK-0482<br>On Day 1 of each 3-week cycle, participants receive pembrolizumab 200 mg intravenously (IV) PLUS MK-0482 IV for a maximum of 35 cycles (approximately 2 years) | Biological: Pembrolizumab<br>* IV infusion<br>* Other names: SCH 900475;Biological: MK-0482<br>* IV infusion<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Objective Response Rate (ORR) According to Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1) | ORR was defined as the percentage of participants in the analysis population who had a Complete Response (CR: Disappearance of all target lesions) or a Partial Response (PR: ≥30% decrease in the sum of diameters of target lesions) per RECIST 1.1. | Up to approximately 24 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Progression-Free Survival (PFS) According to Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1) | PFS is defined as the time from first dose of study treatment until either the earliest date of documented progressive disease (PD) or death due to any cause, whichever occurs first. Per RECIST 1.1, PD is defined as ≥20% increase in the sum of diameters of target lesions. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of ≥5 mm. The appearance of one or more new lesions is also considered PD. | Up to approximately 24 months | 
| Number of Participants Who Experience One or More Adverse Events (AEs) | An AE is defined as any unfavorable and unintended sign, symptom, disease, or worsening of preexisting condition temporally associated with study treatment and irrespective of causality to study treatment. | Up to approximately 27 months | 
| Number of Participants Who Discontinued Study Treatment Due to an Adverse Event (AE) | An AE is defined as any unfavorable and unintended sign, symptom, disease, or worsening of preexisting condition temporally associated with study treatment and irrespective of causality to study treatment. | Up to approximately 24 months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Programmed Cell Death Receptor 1 (PD-1, PD1), Programmed Cell Death Receptor Ligand 1 (PD-L1, PDL1), Programmed Cell Death Receptor Ligand 2 (PD-L2, PDL2)