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Updated: Jul 22, 2025

Author Spotlight: Advancements in Molecular Biomarker Testing for Non-Squamous Non-Small Cell Lung Cancer
Published on: September 8, 2023
[Expert Consensus on Targeted Therapy of NSCLC with MET Exon 14 Skipping Mutation]
Abstract:
The mesenchymal-epithelial transition factor (MET) exon 14 skipping mutation is mainly caused by the loss of c-Cbl tyrosine binding site. This mutation could result in a decrease in the degradation rate of proteasome-mediated MET proteins, trigger continuous activation of downstream pathways, and ultimately lead to tumorigenesis. The incidence of MET exon 14 skipping mutation in patients with non-small cell lung cancer (NSCLC) is 0.9% to 4.0%. Patients with advanced NSCLC are recommended to test MET exon 14 skipping mutations who may benefit from MET inhibitors-targeted therapy. MET inhibitors have a high objective response rate and good safety profiles, which could prolong the survival of NSCLC patients with MET exon 14 skipping mutations. The Lung Cancer Specialty Committee of Chinese Elderly Health Care Association organized multidisciplinary experts to give suggestions on the important issues of clinical aspects for targeted therapy of MET exon 14 skipping mutation in NSCLC according to the clinical practice experiences and evidences based medicine. "Expert Consensus on Targeted Therapy of NSCLC with MET Exon 14 Skipping Mutation" is proposed, aiming to provide standardized guidances for the clinical practice of Chinese physicians. .
Insights
MET exon 14 skipping mutations in non-small cell lung cancer (NSCLC) can lead to tumorigenesis. Testing for these mutations is crucial as MET inhibitors offer effective targeted therapy, improving patient survival.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Context:
- The MET exon 14 skipping mutation arises from the loss of the c-Cbl tyrosine binding site.
- This alteration disrupts proteasomal degradation of MET proteins, leading to pathway activation and potential tumorigenesis.
- It occurs in 0.9%–4.0% of non-small cell lung cancer (NSCLC) cases.
Purpose:
- To provide expert consensus and clinical guidance on the targeted therapy of NSCLC with MET exon 14 skipping mutations.
- To standardize clinical practices for Chinese physicians managing these specific NSCLC cases.
- To highlight the importance of identifying MET exon 14 skipping mutations for treatment selection.
Summary:
- MET exon 14 skipping mutations in NSCLC result from c-Cbl binding site loss, causing MET protein stabilization and oncogenic signaling.
- Patients with advanced NSCLC harboring this mutation are candidates for MET inhibitor therapy.
- MET inhibitors demonstrate high response rates and favorable safety, prolonging survival in affected patients.
Impact:
- This consensus aims to optimize the use of MET inhibitors in NSCLC patients with exon 14 skipping mutations.
- Standardized guidance can improve treatment outcomes and survival for this patient subgroup.
- Facilitates evidence-based clinical decision-making for targeted therapy in NSCLC.
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