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FHIT and p53 status and response to platinum-based treatment in advanced non-small cell lung cancer

D L Cortinovis1, F Andriani, A Livio

  • 1Department of Medical Oncology, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy.

Current Cancer Drug Targets
|August 12, 2008
PubMed

Insights

FHIT and TP53 gene status in non-small cell lung cancer (NSCLC) may affect treatment response. The FHIT-negative/p53-positive (FHIT-/p53+) combination was linked to worse progression-free survival in NSCLC patients treated with carboplatin/gemcitabine.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Genetics

Background:

  • FHIT and TP53 gene inactivation is common in non-small cell lung cancer (NSCLC).
  • These genetic alterations may influence resistance to chemotherapy and apoptosis.
  • Understanding their role is crucial for optimizing NSCLC treatment strategies.

Purpose of the Study:

  • To investigate the association between FHIT and TP53 gene status and patient response to platinum-analogue chemotherapy.
  • To determine if FHIT and TP53 expression levels correlate with treatment efficacy in NSCLC.

Main Methods:

  • Retrospective analysis of 55 NSCLC patients treated with carboplatin/gemcitabine.
  • Immunohistochemistry used to assess FHIT and p53 protein expression in tumor biopsies.
  • TP53 gene mutations analyzed using DG-DGGE/sequencing.

Main Results:

  • FHIT-negative immunophenotype observed in 60% of patients; p53 overexpression/mutation in 45%.
  • The FHIT-negative/p53-positive (FHIT-/p53+) combination was present in 22% of patients.
  • Patients with FHIT-/p53+ status showed significantly worse progression-free survival (PFS) compared to other groups (p=0.04).
  • A trend towards shorter overall survival (OS) was noted in FHIT-negative cases (p=0.07).

Conclusions:

  • FHIT-/p53+ status may serve as a predictive biomarker for carboplatin/gemcitabine treatment efficacy in NSCLC.
  • FHIT gene inactivation suggests reduced responsiveness to this chemotherapy regimen.
  • Further prospective studies are warranted to validate these findings.

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