Gruppo di Studio Tumori della Testa e del Collo (GSTTC) in Head and Neck Cancer

  • Background:
    • While major phase III trials in North America (PARADIGM, DeCIDE):
      • Failed to demonstrate a survival benefit for induction chemotherapy (IC) with docetaxel, cisplatin, 5-FU (TPF) before chemoradiation:
        • Italian investigators from the Gruppo di Studio Tumori della Testa e del Collo (GSTTC):
          • Reported the only positive phase III trial in this setting
  • GSTTC Trial Findings (abstract form):
    • Design:
      • Randomized phase III trial comparing TPF induction chemotherapy:
        • Follow by CRT vs CRT alone in patients with locally advanced HNSCC
    • Results (as reported in abstract form):
      • Improved progression-free survival (PFS) in the induction arm
      • Superior overall survival (OS) compared with CRT alone
      • Benefit appeared most pronounced in patients with:
        • High-risk, bulky, or unresectable disease
      • Publication status:
        • Results have only been presented in abstract form, not yet fully peer-reviewed or published, limiting their integration into international guidelines
  • Interpretation and Clinical Implications:
    • Consistency issue:
      • Unlike GSTTC, large U.S. trials (PARADIGM, DeCIDE) were negative:
        • Raising questions about patient selection, trial design, and population differences
    • Potential value:
      • The GSTTC data suggest that selected patients:
        • Those with high tumor burden or unfavorable disease biology may benefit from TPF induction before CRT
    • Guideline stance:
      • Induction chemotherapy with TPF is not standard of care but can be considered in high-risk or organ-preservation cases within multidisciplinary discussion
    • Take-home point:
      • GSTTC provides the only phase III evidence suggesting a survival advantage with induction:
        • But the lack of full peer-reviewed publication and discordant international trial results prevent broad adoption
  • Summary sentence for surgeons:
    • The GSTTC phase III trial remains the only study to report superior outcomes with TPF induction followed by CRT versus CRT alone, though its abstract-only publication and contrast with negative U.S. trials mean that CRT alone continues as the standard, with induction reserved for carefully selected high-risk patients

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