Understanding resistance to amivantamab in lung cancer patients

Mechanisms of Resistance to Amivantamab in Patients With NSCLC With EGFR Exon 20 Insertion

Not applicable Interventional Groupe Francais De Pneumo-Cancerologie · NCT06247826

This study is trying to understand why some lung cancer patients with a specific mutation stop responding to the drug amivantamab, by looking at their blood and tumor samples after their disease gets worse.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment30 (estimated)
Ages18 Years and up
SexAll
SponsorGroupe Francais De Pneumo-Cancerologie Academic / other
Drugs / interventionsamivantamab
Locations18 sites (Bordeaux and 17 other locations)
Trial IDNCT06247826 on ClinicalTrials.gov

What this trial studies

This interventional study aims to evaluate the mechanisms of acquired resistance to amivantamab monotherapy in patients with advanced non-small cell lung cancer (NSCLC) who have an EGFR exon 20 insertion mutation. Participants will provide blood samples for circulating tumor DNA (ctDNA) analysis and, when available, tumor tissue samples for DNA next-generation sequencing (NGS) at the time of disease progression. The study seeks to identify how resistance develops and how it may inform future systemic therapies for these patients.

Who should consider this trial

Good fit: Ideal candidates include adults aged 18 and older with histologically confirmed advanced NSCLC and an EGFR exon 20 insertion mutation who are receiving amivantamab as monotherapy.

Not a fit: Patients receiving amivantamab in combination with other therapies or those who do not consent to liquid biopsy at progression may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved understanding of resistance mechanisms, potentially guiding more effective treatment strategies for patients with advanced NSCLC.

How similar studies have performed: While this study focuses on a specific resistance mechanism, similar studies have shown promise in understanding treatment resistance in cancer therapies, indicating potential for success.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* All patients with advanced NSCLC with EGFR ins20 receiving amivantamab as monotherapy in France under ATU or EAP;
* Age ≥ 18 years;
* Histologically confirmed advanced NSCLC (metastatic or locally advanced unresectable and not suitable for definitive radiotherapy) with EGFR ins20;
* Patients included will be required to sign an informed consent form to collect blood samples (liquid biopsy) and tissue biopsy when available at progression on amivantamab;
* Confirmed progression on amivantamab according to RECIST 1.1;
* Patient enrolled in the french National Health Insurance program or with a third- party payer.

Exclusion Criteria:

* Patients receiving amivantamab in combination with another therapy;
* Patients who do not consent to liquid biopsy at progression.

Where this trial is running

Bordeaux and 17 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Non-small Cell Lung CancerEGFR Exon 20 Insertion Mutation
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.