Structural Alterations of MET Trigger Response to MET Kinase Inhibition in Lung Adenocarcinoma Patients

Dennis Plenker1,2, Miriam Bertrand3, Adrianus J de Langen4

  • 1Molecular Pathology, Institute of Pathology, University of Cologne, Cologne, Germany.

Insights

Crizotinib shows clinical response in patients with MET rearrangements, including gene fusions. These MET alterations represent actionable targets in lung cancer, confirmed by cellular models.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Structural alterations in the MET receptor tyrosine kinase can drive cancer progression.
  • Identifying actionable targets is crucial for effective lung cancer treatment.

Purpose of the Study:

  • To investigate the clinical efficacy of MET inhibition in patients with structural MET alterations.
  • To functionally characterize these MET alterations in cellular models.

Main Methods:

  • Next-generation sequencing (NGS) for identifying MET alterations.
  • Treatment of patients with crizotinib, a MET and ALK inhibitor.
  • Analysis of cellular models expressing MET kinase alterations.

Main Results:

  • Three patients with structural MET alterations were identified.
  • Two patients had MET gene fusions (KIF5B-MET, STARD3NL-MET).
  • All three patients showed partial response to crizotinib treatment.

Conclusions:

  • Crizotinib demonstrates clinical activity in patients with MET rearrangements.
  • Structural MET alterations are potential therapeutic targets in lung cancer.
  • Functional validation in cellular models supports clinical findings.

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