Symbiotic-Lung-20: A Study to Learn About the Study Medicine Called PF-08634404 in Combination With Different Anticancer Agents in Advanced Cancers
This study is being done to learn more about a new medicine called PF-08634404 and how it works when used with other cancer medicines in people who have advanced solid tumors. An advanced solid tumor is a type of cancer that has spread beyond its original location and cannot be removed by surgery or cured with standard treatments. To join in the study, participants must: * Be 18 years or older * Participants with advanced non-small cell lung cancer (NSCLC), a type of lung cancer that has spread to other parts of the body The study will look at: * Whether PF-08634404 is safe to use with other cancer medicines. * What side effects may happen. A side effect is anything the medicine does to your body that is not part of treating your disease. * Whether the combination of PF-08634404 and other cancer medicines can help treat solid tumors. The study has different parts, each testing PF-08634404 with a different cancer medicine: * Part A will test PF-08634404 with a medicine called sigvotatug vedotin. * Part B will test PF-08634404 with a medicine called PF-08046054/SGN-PDL1V Participants will receive the study medicines through an intravenous (IV) infusion (injected into the vein) at the study clinic. All treatments will take place at clinical trial sites, where trained medical staff will monitor participants during and after each visit.
Ask AI to explain this studyKey things to know
This describes the study’s primary purpose.
Plus 1 other study approaches.
These are broad labels—not an eligibility decision.
Checked against the public recordLast updated Oct 8, 2026 · Source: ClinicalTrials.gov
The study is currently accepting participants.
Interventional
Locations may change over time.
Study sponsor
What this study is about
- Purpose
- Treatment
- Study type
- Interventional
- Phase
- Phase 1 / Phase 2
- Sponsor
- Pfizer
- Interventions being studied
- Biological: PF-08634404; Biological: Sigvotatug Vedotin; Biological: PF-08046054/SGN-PDL1V
How this study is categorized
These labels come from structured fields and exact terms in the public record.
Who may be able to participate
The sponsor separates these requirements into two groups. You do not need to interpret them alone—use them to guide a conversation with the study team.
- Pathologically confirmed locally advanced (Stage IIIB/IIIC) or metastatic (Stage IV) squamous or non-squamous NSCLC and are not a candidate for complete surgical resection and curative concurrent/sequential chemoradiotherapy
- PD-L1 status available
- Part B only: PD-L1 ≥ TPS 1%
- Measurable disease based on RECIST v1.1 per investigator.
- Eastern Cooperative Oncology Group performance status of 0 or 1.
- Adequate organ function
- Participants with known AGAs including EGFR, ALK and ROS1, NTRK, BRAF, and MET for which there are available first-line therapies per local standard-of-care (SOC)
- History of another malignancy within 2 years before the first dose of study intervention, or any evidence of residual disease from a previously diagnosed malignancy
- Known active CNS lesions, including brainstem, meningeal, or spinal cord metastases or compression
- Leptomeningeal disease
- Active autoimmune diseases requiring systemic treatment within the past 2 years
- Previous systemic anti-tumor therapy for locally advanced or metastatic NSCLC
- Previous treatment with immunotherapy (exception is (neo)adjuvant or consolidation anti-PD-(L)1), ADCs containing MMAE payload, systemic anti-angiogenic therapy, or prior radiotherapy \>30 Gy to the lung within 6 months of first dose of study intervention
Important: This is the sponsor’s public criteria, not a determination of eligibility. The study team must review your individual situation.
U.S. locations
- Highlands Oncology Group, PAFayetteville, Arkansas
- Highlands Oncology Group, PARogers, Arkansas
- Highlands Oncology Group, PASpringdale, Arkansas
- Providence Medical FoundationFullerton, California
- Providence St. Jude Medical Center - Virginia K. Crosson Cancer Center and Infusion CenterFullerton, California
- Providence St. Jude Medical CenterFullerton, California
- Scripps Clinic Torrey Pines (Scripps Cancer Center)La Jolla, California
- Scripps Green HospitalLa Jolla, California
- Scripps Shiley PavilionLa Jolla, California
- START Los Angeles, LLCLos Angeles, California
- LACN Century CityLos Angeles, California
- Valkyrie Clinical Trials (Additional Site Pharmacy Storage Suite)Los Angeles, California
Source and freshness
Processed from ClinicalTrials.gov. Last public update: Oct 8, 2026. Always confirm current availability with the study team.