PET/CT Changes During Chemoimmunotherapy and Radiation Therapy in Patients With Stage IV Non-small Cell Lung Cancer

January 12, 2026 updated by: University of Washington

An Interventional Study of PET/CT Changes During Chemoimmunotherapy and Radiation Therapy for Patients With Metastatic NSCLC (PET Bright)

This study investigates the changes in positron emission tomography (PET)/computed tomography (CT) imaging scans during chemoimmunotherapy and radiation therapy treatment in patients with stage IV non-small cell lung cancer. Analyzing changes in PET/CT imaging scans may help doctors assess and predict patterns of cancer response to chemoimmunotherapy and radiation therapy.

Study Overview

Detailed Description

Patients undergo PET/CT scan within 4 weeks before starting standard of care chemoimmunotherapy and a second PET/CT scan within 5 days of the second chemoimmunotherapy cycle. Patients receiving standard of care radiation treatment undergo additional PET/CT scans within 4 weeks prior to radiation treatment and 1 month post-radiation treatment. Additionally, patients undergo blood sample collection on study. Patients may also undergo magnetic resonance imaging (MRI) as clinically indicated throughout the study.

Study Type

Interventional

Enrollment (Estimated)

80

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

  • Name: Stephen R. Bowen, PhD
  • Phone Number: 206-543-6559
  • Email: srbowen@uw.edu

Study Locations

    • Washington
      • Seattle, Washington, United States, 98109
        • Recruiting
        • Fred Hutch/University of Washington Cancer Consortium
        • Contact:
          • Stephen R. Bowen, PhD
          • Phone Number: 206-543-6559
          • Email: srbowen@uw.edu
        • Sub-Investigator:
          • Stephen R. Bowen, PhD
        • Sub-Investigator:
          • Jing Zeng, MD
        • Principal Investigator:
          • Lei Deng, MD

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Study Population

Patients with metastatic non-small cell lung cancer (NSCLC) scheduled to receive chemo-immunotherapy per standard clinical care

Description

Inclusion Criteria:

  • Histologically-confirmed or cytologically-confirmed metastatic NSCLC in patients who have not received chemotherapy or immunotherapy for their advanced disease (stage IV or recurrent, using the American Joint Committee on Cancer [AJCC]/Union for International Cancer Control [UICC] 8th edition for staging)
  • Evidence of stage IV disease on imaging by CT, PET/CT, or magnetic resonance imaging (MRI)
  • Plan to treat with a platinum doublet with a PD1 or PDL1 inhibitor
  • Adjuvant chemotherapy or concurrent chemoradiation for early stage disease does not count as prior therapy unless subject progressed within 6 months of completion of regimen.
  • Measurable disease per Response Evaluation Criteria in Solid Tumors (RECIST) version (v)1.1, at treating physician's discretion
  • Subjects must be ≥ 18 years of age
  • Patients with known activating mutations in EGFR, BRAF or known translocation in ALK or ROS-1 are eligible provided they have progressed on or were intolerant to Food and Drug Administration (FDA) approved targeted therapy
  • Eastern Cooperative Oncology Group (ECOG) performance status (PS) 0-2
  • Creatinine =< 2 mg/dL or creatinine clearance > 50 mL/min
  • Aspartate aminotransferase (AST) (serum glutamic-oxaloacetic transaminase [SGOT])/alanine aminotransferase (ALT) (serum glutamate pyruvate transaminase [SGPT]) =< 5x institutional upper limit of normal
  • Total bilirubin =< 1.5 mg/dL
  • Absolute neutrophil count (ANC) >= 1.5 x 10^9/L (>= 1500 per mm^3)
  • Platelet count >= 100 x 10^9/L (>=100,000 per mm^3)
  • Capability to understand and comply with the protocol requirements and signed informed consent documents

Exclusion Criteria:

  • Any known additional malignancy (with exception of non-melanoma skin cancer, in-situ breast cancer, low risk prostate cancer, or a malignancy diagnosed >= 3 years prior to the current NSCLC diagnosis and with no evidence of requiring active treatment)
  • Had prior treatment with an anti-PD-1, or PD-L1 or PD-L2 agent or an antibody targeting other immuno-regulatory receptors or mechanisms
  • Has any serious or uncontrolled active infection that could create false positives on a PET/CT scan, in the opinion of the treating investigator
  • 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 an active autoimmune disease currently requiring systemic treatment (e.g. disease modifying agents, corticosteroids or immunosuppressive drugs)

    **Replacement therapy (e.g., thyroxine, insulin, or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency, etc.) is not considered a form of systemic treatment

  • Has known, active, and symptomatic central nervous system (CNS) metastases and/or carcinomatous meningitis

    • Patients with stable or previously treated brain metastases are eligible as long as they are not receiving more than 10 mg of prednisone, or equivalent, per day

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Other
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Research (PET/CT scan)
Patients undergo PET/CT scan within 4 weeks before starting standard of care chemoimmunotherapy and a second PET/CT scan within 5 days of the second chemoimmunotherapy cycle. Patients receiving standard of care radiation treatment undergo additional PET/CT scans within 4 weeks prior to radiation treatment and 1 month post-radiation treatment. Additionally, patients undergo blood sample collection on study. Patients may also undergo MRI as clinically indicated throughout the study.
Undergo MRI
Other Names:
  • MRI
  • MRI Scan
Undergo blood sample collection
Other Names:
  • Biological Sample Collection
Undergo PET/CT scan
Other Names:
  • CT
  • CAT
  • CAT Scan
  • computerized tomography
  • CT SCAN
  • computerized axial tomography
Undergo PET/CT scan
Other Names:
  • PET
  • Positron-Emission Tomography
  • PT
  • PET scan
  • Medical Imaging
  • positron emission tomography scan
Undergo standard of care radiation therapy
Other Names:
  • Cancer Radiotherapy
  • Irradiate
  • Irradiation
  • Radiation
  • Radiotherapeutics
  • RT
  • radiotherapy
  • irradiated
Receive standard of care chemotherapy
Other Names:
  • Chemo
  • Chemotherapy (NOS)
Receive standard of care immunotherapy
Other Names:
  • Immunological
  • Immunological Therapy
  • Immunologically Directed Therapy

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Actuarial disease progression rate
Time Frame: At 1 year
Will be compared between high-risk and low-risk subgroups of patients based on positron emission tomography/computed tomography imaging biomarker changes using a two-sample proportionality test.
At 1 year

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Principal Investigator: Lei Deng, MD, Fred Hutch/University of Washington Cancer Consortium

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

September 26, 2019

Primary Completion (Estimated)

November 30, 2027

Study Completion (Estimated)

November 30, 2027

Study Registration Dates

First Submitted

October 30, 2019

First Submitted That Met QC Criteria

November 1, 2019

First Posted (Actual)

November 5, 2019

Study Record Updates

Last Update Posted (Estimated)

January 14, 2026

Last Update Submitted That Met QC Criteria

January 12, 2026

Last Verified

January 1, 2026

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

Yes

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Metastatic Lung Non-Small Cell Carcinoma

Clinical Trials on Magnetic Resonance Imaging

Subscribe