Impact of TP53 mutation status on systemic treatment outcome in ALK-rearranged non-small-cell lung cancer

A Kron1, C Alidousty2, M Scheffler1

  • 1Network Genomic Medicine, Cologne, Germany; Lung Cancer Group Cologne, Department I of Internal Medicine, University Hospital of Cologne, Cologne, Germany; Center for Integrated Oncology Köln Bonn, Cologne, Germany.

Abstract

Insights

Co-occurring TP53 mutations in ALK-rearranged non-small-cell lung cancer (NSCLC) patients significantly reduce progression-free survival and overall survival, regardless of treatment. These findings highlight TP53 as a negative prognostic marker in ALK-rearranged NSCLC.

Area of Science:

  • Oncology
  • Genetics
  • Molecular Biology

Background:

  • Systemic therapy outcomes in ALK-rearranged non-small-cell lung cancer (NSCLC) can be influenced by co-occurring mutations.
  • Investigating these co-mutations is crucial for understanding treatment efficacy.

Purpose of the Study:

  • To analyze the impact of co-occurring mutations on the efficacy of systemic therapy in patients with ALK-rearranged NSCLC.
  • To identify specific mutations that predict treatment outcomes.

Main Methods:

  • Retrospective analysis of 216 patients with ALK-rearranged NSCLC (stage IIIB/IV).
  • Utilized next-generation sequencing and fluorescence in situ hybridization for mutation analysis.
  • Determined median progression-free survival (PFS) and overall survival (OS) and performed Cox regression analyses.

Main Results:

  • TP53 mutations were present in 23.8% of ALK-rearranged NSCLC patients; other co-mutations were rare.
  • ALK/TP53 co-mutated patients had significantly lower median PFS (3.9 vs. 10.3 months) and OS (15.0 vs. 50.0 months) compared to TP53 wildtype patients.
  • This survival disadvantage was consistent across various treatment subgroups, including chemotherapy and ALK-inhibitor therapies.

Conclusions:

  • Co-occurring TP53 mutations are a significant negative predictor of systemic therapy outcomes in ALK-rearranged NSCLC.
  • Further research into the molecular mechanisms of ALK/TP53 co-mutated NSCLC is warranted to improve treatment strategies.

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