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

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

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06247826
Acronym
RESAMEX
Enrollment
30
Registered
2024-02-08
Start date
2024-01-15
Completion date
2026-07-30
Last updated
2026-04-29

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

Conditions

EGFR Exon 20 Insertion Mutation, Non-small Cell Lung Cancer

Brief summary

The goal of this prospective, interventional study is to evaluate the mechanisms of acquired resistance to amivantamab monotherapy in patients with advanced NSCLC with EGFR ins20. The main question it aims to answer is: What are the mechanisms of acquired resistance to amivantamab monotherapy in this population of patients ? How anticipate the efficacy of subsequent systemic therapies ? After this information session, the participant will be asked to sign the study informed consent. A blood samples (2\*10 mL on ethylenediaminetetraacetic acid (EDTA)) will be taken at time of disease progression and will be sent for central liquid biopsy ctDNA analysis. If available, tumor tissue will also be sent for DNA NGS analysis.

Detailed description

RESAMEX is a prospective study evaluating the mechanisms of acquired resistance to amivantamab monotherapy in patients with advanced NSCLC with EGFR ins20. Biological analysis will be performed on circulating tumor deoxyribonucleic acid (ctDNA) at the time of disease progression and on tumor tissue at the time of disease progression when available. * ctDNA : The extraction of the ctDNA will be performed in an automated way with the Promega RSC LV cfDNA kit on Maxwell platform. Sequencing will be performed on NextSeq500 platform with a panel of 208 genes (including 190 genes with full coverage of coding regions, and 11 genes with coverage of introns involved in translocations) covering 800 kpb and at a target depth of 8000 X. * Tissue : Deoxyribonucleic acid (DNA) next generation sequencing (NGS) will be performed on tumor biopsy (10 slides of 5 microns) . Samples will be sent for centralized analysis to Centre de Recherche en Cancérologie de Marseille (CRCM), 27 Bd Lei Roure, 13009 Marseille (Prof. Tomasini and Gwenaël Lumet), and will be stored at Centre de Ressources Biologiques de l'Assistance Publique Hôpitaux de Marseille (CRB AP-HM), 264 Rue Saint-Pierre, 13005 Marseille.

Interventions

PROCEDUREBlood sampling

Blood samples (2\*10 mL on ethylenediaminetetraacetic acid (EDTA)) will be taken at time of disease progression and will be sent for central liquid biopsy ctDNA analysis.

Sponsors

Groupe Francais De Pneumo-Cancerologie
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
OTHER
Masking
NONE

Eligibility

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

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.

Design outcomes

Primary

MeasureTime frameDescription
Percentage of molecular alterationsAt disease progression on a period up to 18 months at maximumPercentage of molecular alterations found at the time of disease progression on amivantamab monotherapy in patients with advanced NSCLC with EGFR ins20.

Secondary

MeasureTime frameDescription
Progression Free SurvivalFrom the date of first dose of treatment received until the date of the first documented disease progression according to Response Evaluation Criteria in Solid Tumor (RECIST) 1.1 or to death from any cause, whichever came first, assessed up to 18 monthsProgression free survival with the first subsequent therapy after amivatamab, defined as the time from first dose to first documentation of objective disease progression according to Response Evaluation Criteria in Solid Tumor (RECIST) 1.1 or to death from any cause.

Countries

France

Contacts

CONTACTLaurent GRELLIER
laurent.greillier@ap-hm.fr+33 (0)4 91 96 59 01
CONTACTSoizic Ferlandin
soizic_ferlandin@yahoo.fr
PRINCIPAL_INVESTIGATORPascale Tomasini

Service d'Oncologie Multidisciplinaire et Innovations Thérapeutiques Hôpital Nord-APHM

PRINCIPAL_INVESTIGATORMaude Dupé-Pelletier

Service d'Oncologie Multidisciplinaire et Innovations Thérapeutiques Hôpital Nord-APHM

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Apr 30, 2026