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Exploring the biological behavior differences between retroperitoneal and non-retroperitoneal liposarcomas.

Zhe Xi1, Aobo Zhuang1, Xi Li2

  • 1Cancer Research Center, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, Fujian, 361102, PR China.

Heliyon
|August 19, 2024
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Summary

Retroperitoneal liposarcoma (RLPS) shows a worse prognosis than non-retroperitoneal liposarcoma (NRLPS). These distinct tumor types require separate research and treatment strategies.

Keywords:
LiposarcomaNon-retroperitonealRetroperitonealSEER databaseTranscriptomics

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Area of Science:

  • Oncology
  • Surgical Pathology
  • Genomics

Background:

  • Liposarcoma is a soft tissue sarcoma arising from fat cells.
  • Prognostic differences between retroperitoneal liposarcoma (RLPS) and non-retroperitoneal liposarcoma (NRLPS) are not well-defined.
  • Understanding these differences is crucial for tailored treatment strategies.

Purpose of the Study:

  • To investigate and compare the prognosis of RLPS versus NRLPS.
  • To explore the underlying molecular and immunological factors contributing to survival differences.

Main Methods:

  • Utilized the Surveillance, Epidemiology, and End Results (SEER) database for patient data.
  • Applied propensity score matching (PSM) to control for prognostic variables.
  • Analyzed transcriptome and whole exome sequencing data from TCGA and JGA.

Main Results:

  • RLPS demonstrated a significantly worse prognosis compared to NRLPS in the SEER database (p < 0.001).
  • Prognostic disparities persisted after PSM adjustment (p = 0.017).
  • Identified 467 differentially expressed genes and significant differences in the tumor immune microenvironment and exome data between RLPS and NRLPS.

Conclusions:

  • Significant prognostic and molecular differences exist between RLPS and NRLPS.
  • RLPS and NRLPS should be classified and treated as distinct entities.
  • Differentiated research and clinical approaches are necessary for RLPS and NRLPS management.