The clinical implication of SS18-SSX fusion gene in synovial sarcoma

Br J Cancer. 2013 Oct 15;109(8):2279-85. doi: 10.1038/bjc.2013.547. Epub 2013 Sep 10.

Abstract

Background: The aim of this study is to evaluate distribution and clinical impact of the SS18-SSX fusion gene in patients with synovial sarcoma in China.

Methods: We collected and analysed the clinical data of 88 patients using univariate and multivariate survival analysis. HEK 293T and NIH 3T3 cell lines were transfected with the SS18-SSX1 or SS18-SSX2 gene to determine the respective involvement of these fusion genes in cell proliferation and invasion.

Results: Overall survival was significantly better among SS18-SSX2 cases (P=0.001), FNCLCC grade 2 cases (P<0.001), and UICC stage 1 or 2 (P<0.001) by univariate and multivariate survival analysis. SS18-SSX1-positive cells were more proliferative and invasive than SS18-SSX2-positive cells.

Conclusion: SS18-SSX fusion type is a significant prognostic factor for patients with synovial sarcoma.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Animals
  • Biomarkers, Tumor / genetics
  • Cell Growth Processes / genetics
  • Child
  • Female
  • HEK293 Cells
  • Humans
  • Male
  • Mice
  • Middle Aged
  • NIH 3T3 Cells
  • Neoplasm Invasiveness
  • Neoplasm Proteins / genetics*
  • Neoplasm Proteins / metabolism
  • Oncogene Proteins, Fusion / genetics*
  • Oncogene Proteins, Fusion / metabolism
  • Proto-Oncogene Proteins / genetics*
  • Proto-Oncogene Proteins / metabolism
  • Repressor Proteins / genetics*
  • Repressor Proteins / metabolism
  • Retrospective Studies
  • Sarcoma, Synovial / genetics*
  • Sarcoma, Synovial / metabolism
  • Sarcoma, Synovial / pathology
  • Survival Analysis
  • Transfection
  • Young Adult

Substances

  • Biomarkers, Tumor
  • Neoplasm Proteins
  • Oncogene Proteins, Fusion
  • Proto-Oncogene Proteins
  • Repressor Proteins
  • SS18 protein, human
  • SYT-SSX fusion protein
  • synovial sarcoma X breakpoint proteins