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Substudy 01I: A Study of Investigational Agents in Participants With Previously Treated Stage IV Squamous Non-small Cell Lung Cancer (NSCLC) (MK-3475-01I/KEYMAKER-U01I)

KEYMAKER-U01 Substudy 01I: A Phase 2, Randomized, Umbrella Study With Rolling Arms of Investigational Agents in Participants With Previously Treated Stage IV Squamous Non-small Cell Lung Cancer (NSCLC)

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06780098
Enrollment
144
Registered
2025-01-17
Start date
2025-05-28
Completion date
2032-03-02
Last updated
2026-04-01

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Lung Neoplasm

Brief summary

Researchers are looking for other ways to treat metastatic squamous non-small cell lung cancer (NSCLC). Squamous NSCLC is cancer that starts in squamous cells, which are flat cells that line the inside of the airways in the lungs. Metastatic means the cancer has spread to other parts of the body. Standard treatment (usual treatment) for metastatic squamous NSCLC is immunotherapy with or without chemotherapy. Immunotherapy is a treatment that helps the immune system fight cancer. Chemotherapy is medicine that destroys cancer cells or stops them from growing. However, standard treatment may not work or may stop working to treat metastatic squamous NSCLC. Researchers want to learn if study treatments that are antibody drug conjugates (ADCs) can treat metastatic squamous NSCLC that did not respond (get smaller or go away) to standard treatment. An ADC attaches to a protein on cancer cells and delivers treatment to destroy those cells. The main goals of this study are to learn about: * The cancer response to the study treatments compared to chemotherapy * The safety of the study treatments and if people tolerate them This study is one of the substudies being conducted under one pembrolizumab umbrella master protocol (MK-3475-U01/KEYMAKER-U01).

Detailed description

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

Interventions

BIOLOGICALR-DXD

IV Infusion

BIOLOGICALI-DXD

IV Infusion

DRUGDocetaxel

IV Infusion

Participants receive rescue medications consisting of a combination regimen to include corticosteroids with a 5-hydroxytryptamine subtype 3 receptor antagonist and/or a neurokinin-1 receptor antagonist, all per approved product label and following institutional standards or local guidelines.

DRUGRescue Medication

Participants are premedicated with corticosteroids per approved product label and following institutional standards or local guidelines.

Sponsors

Merck Sharp & Dohme LLC
Lead SponsorINDUSTRY
Daiichi Sankyo
CollaboratorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

The main inclusion criteria include but are not limited to the following: * Histologically or cytologically confirmed diagnosis of Stage IV squamous non-small cell lung cancer (NSCLC) * Has documented disease progression per Response Evaluation Criteria In Solid Tumors 1.1 (RECIST 1.1), as assessed by investigator after receiving an anti-programmed cell death protein 1 (anti-PD-1)/programmed cell death ligand 1 (PD-L1) treatment and platinum-based chemotherapy for Stage IV disease * Human immunodeficiency virus (HIV)-infected participants must have well controlled HIV on antiretroviral therapy (ART) * Participants who are Hepatitis B surface antigen (HBsAg) positive are eligible if they have received Hepatitis B virus (HBV) antiviral therapy for at least 4 weeks, and have undetectable HBV viral load * Participants with history of Hepatitis C virus (HCV) infection are eligible if HCV viral load is undetectable

Exclusion criteria

The main

Design outcomes

Primary

MeasureTime frameDescription
Objective Response Rate (ORR)Up to approximately 81 monthsORR is defined as the percentage of participants with Complete Response (CR: disappearance of all target lesions) or Partial Response (PR: at least a 30% decrease in the sum of diameters of target lesions) as assessed per Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST 1.1). ORR will be assessed by Blinded Independent Central Review (BICR). The percentage of participants who experience CR or PR as assessed by the investigator will be presented.
Number of participants who experience one or more adverse events (AEs)Up to approximately 81 monthsAn AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. The number of participants who experience an AE will be reported.
Number of participants who discontinue study intervention due to an AEUp to approximately 81 monthsAn AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. The number of participants who discontinue study treatment due to an AE will be reported.

Secondary

MeasureTime frameDescription
Duration of Response (DOR)Up to approximately 81 monthsFor participants who demonstrate a confirmed CR (disappearance of all target lesions) or PR (at least a 30% decrease in the sum of diameters of target lesions) per RECIST 1.1, DOR is defined as the time from first documented evidence of CR or PR until PD or death. Per RECIST 1.1, PD is defined as at least a 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 at least 5 mm. The appearance of one or more new lesions is also considered PD. DOR as assessed by BICR will be presented.
Progression-free Survival (PFS)Up to approximately 81 monthsPFS is defined as the time from randomization to the first documented PD or death due to any cause, whichever occurs first as assessed by (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. PFS as assessed by BICR will be presented.
Overall Survival (OS)Up to approximately 81 monthsOS is defined as time from randomization to death due to any cause.

Countries

Chile, China, Germany, Greece, Hungary, Israel, Italy, Poland, Spain, Turkey (Türkiye), United States

Contacts

CONTACTToll Free Number
Trialsites@msd.com1-888-577-8839
STUDY_DIRECTORMedical Director

Merck Sharp & Dohme LLC

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Apr 2, 2026