Dynamics of 18-FDG Uptake in Stage III/IV Non Small Cell Lung Cancer During First Line Pembrolizumab Treatment (iTEP1)

December 29, 2025 updated by: Centre Henri Becquerel

18-FDG Tumour Metabolism Changes in PDL1 Superior to 50% Stage III/IV Non Small Cell Lung Cancer During First Line Treatment With Pembrolizumab

The aim of this study is to describe the early dynamics of 18-FDG uptake in non smal cell lung cancer during first line treatment with pembrolizumab, and to evaluate whether or not they differ according to treatment response at 3 months.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Immunotherapy with anti-PD1 antibody, such as Pembrolizumab, is widely used in the treatment of stage III/IV non small cell lung cancer. In order to refine treatments and patients' prognosis, early assessment of tumour response is needed.

The aim of this study is to describe the early tumour metabolic changes in non smal cell lung cancer during first line treatment with pembrolizumab, and to evaluate whether or not they differ according to treatment response.

Eligible patients with stage III/IV, PDL1>50% NSCLC will receive pembrolizumab treatment as per standard of care.

Tumour metabolism will be assessed by 18-FDG PETscan before each of the 3 first pembrolizumab infusions. Treatment response will be determined by RECIST, irRC and mCHOI criteria at 3 months.

Prognostic and predictive value of baseline and dynamic metabolic parameters will be assessed.

Study Type

Interventional

Enrollment (Actual)

40

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 Locations

  • France
      • Rouen, France, 76000
        • Centre Henri Becquerel
      • Rouen, France, 76000
        • CHU

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

Description

Inclusion Criteria:

  • Non operable non small cell lung cancer
  • Indication of treatment by Pembrolizumab
  • PD-L1 status superior to 50 %
  • Age more than 18 years
  • At least one measurable target
  • Written inform consent

Exclusion Criteria:

  • no treatment by pembrolizumab
  • immunosuppressive treatment
  • uncontrolled diabete
  • Pregnancy or breast-feeding
  • curatorship or guardianship
  • not possibility to follow-up the procedures of the study due to geographic, social or psychic reasons

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: PET scan imaging
PET scan will be performed each of three first cycles of pembrolizumab to describe the early tumour metabolic changes during the first line of treatment.
Device: PET scan imaging
3 PET scans will be performed after each 3 first infusions of Pembrolizumab

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Determination of progression by early PET scan
Time Frame: 3 months
Determination of non-response of treatment by PET scan imaging after one cycle of Pembrolizumab
3 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Progression free survival
Time Frame: 24 months
Time between inclusion and progression
24 months
Overall survival
Time Frame: 24 months
Time between inclusion and death
24 months

Collaborators and Investigators

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

Sponsor

Centre Henri Becquerel

Investigators

  • Principal Investigator: Stephanie Becker, MD, Centre Henri Becquerel
  • Principal Investigator: Florian Guisier, MD, CHU Rouen

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)

June 17, 2019

Primary Completion (Actual)

June 3, 2024

Study Completion (Actual)

July 3, 2024

Study Registration Dates

First Submitted

February 5, 2019

First Submitted That Met QC Criteria

February 5, 2019

First Posted (Actual)

February 6, 2019

Study Record Updates

Last Update Posted (Estimated)

January 2, 2026

Last Update Submitted That Met QC Criteria

December 29, 2025

Last Verified

December 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • CHB18.05

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

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.

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