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Desmoplastic small round cell tumor.

Mehdi Brahmi1,2, Clémence Romeo1, Alexandra Meurgey1

  • 1Centre Léon Bérard.

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Desmoplastic small round cell tumor (DSRCT) is a rare cancer with poor outcomes. Recent advances in molecular understanding and targeted therapies, like antibody-drug conjugates, offer new hope for this aggressive sarcoma.

Keywords:
antibody–drug conjugateschemotherapydesmoplastic small round cell tumorsradiotherapyultra-rare sarcoma

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Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Desmoplastic small round cell tumor (DSRCT) is an ultra-rare sarcoma with a poor prognosis.
  • Most patients are diagnosed with advanced or metastatic disease, and long-term survival is rare.

Purpose of the Study:

  • To review recent advances in the molecular and biological understanding of DSRCT.
  • To highlight current diagnostic and therapeutic standards.
  • To discuss emerging targeted and immunotherapeutic strategies.

Main Methods:

  • Review of recent molecular and biological studies on DSRCT.
  • Analysis of current diagnostic and therapeutic standards.
  • Evaluation of emerging targeted and immunotherapeutic strategies.

Main Results:

  • DSRCT is characterized by the EWSR1::WT1 fusion, driving oncogenesis.
  • Multimodal therapy (chemotherapy, surgery, radiotherapy) is the current cornerstone but yields poor outcomes.
  • Genomic studies reveal vulnerabilities in angiogenic and IGF pathways.
  • Antibody-drug conjugates targeting HER2 and B7-H3 show promising early results.

Conclusions:

  • DSRCT remains a highly lethal malignancy despite current treatments.
  • Molecular advances are paving the way for targeted therapies, particularly antibody-drug conjugates.
  • Clinical trials and international collaboration are crucial for improving outcomes in DSRCT.