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Related Experiment Video

Updated: Jun 8, 2026

Induction of Mesenchymal-Epithelial Transitions in Sarcoma Cells
11:42

Induction of Mesenchymal-Epithelial Transitions in Sarcoma Cells

Published on: April 7, 2017

Prognostic determinants in epithelioid sarcoma.

Patrizia Gasparini1, Federica Facchinetti, Mattia Boeri

  • 1Unit of Molecular Cytogenetics, Fondazione IRCCS Istituto Nazionale Tumori, Milano, Italy.

European Journal of Cancer (Oxford, England : 1990)
|October 12, 2010
PubMed
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This summary is machine-generated.

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Epithelioid sarcoma (ES) is a rare cancer. Loss of SMARCB1 protein expression, often due to gene deletion, is common in ES and may indicate a worse prognosis. Further study of SMARCB1 status is recommended.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Epithelioid sarcoma (ES) is a rare soft tissue neoplasm.
  • ES typically affects young adults, has high recurrence rates, and presents diagnostic challenges.
  • Identifying prognostic markers is crucial for patient stratification.

Purpose of the Study:

  • To investigate the prognostic impact of clinical and molecular characteristics in Epithelioid Sarcoma (ES).
  • To assess the role of the SMARCB1 tumor suppressor gene status in ES prognosis.
  • To identify potential markers for patient stratification in ES cases.

Main Methods:

  • Immunohistochemistry and western blotting were used to analyze SMARCB1 protein expression in 40 ES patients.
  • Kaplan-Meier survival analysis and log-rank tests were employed to compare survival curves.

Related Experiment Videos

Last Updated: Jun 8, 2026

Induction of Mesenchymal-Epithelial Transitions in Sarcoma Cells
11:42

Induction of Mesenchymal-Epithelial Transitions in Sarcoma Cells

Published on: April 7, 2017

  • Gene sequencing, FISH, and qPCR were used to investigate SMARCB1 gene mutations and deletions in cases with absent protein expression.

    • Main Results:

    • FNCLCC tumor grade 3 and proximal-type histology significantly correlated with shorter overall survival.
    • Loss of SMARCB1 protein expression was observed in 62.5% of ES cases (25/40), predominantly in adult cases.
    • Loss of SMARCB1 protein strongly correlated with SMARCB1 gene deletion and showed a trend towards association with higher tumor grading and increased metastasis.

    Conclusions:

    • Tumor grading and subtype are significant prognostic factors in Epithelioid Sarcoma (ES).
    • Loss of SMARCB1 protein expression, frequently mediated by gene deletions, plays a crucial role in ES development.
    • SMARCB1 status in ES warrants further investigation as a prognostic marker and potential therapeutic target.