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  11. Prognostic Role Of Ox40, Lag-3, Tim-3 And Pd-l1 Expression In Bone And Soft Tissue Sarcomas

Prognostic Role of OX40, LAG-3, TIM-3 and PD-L1 Expression in Bone and Soft Tissue Sarcomas

Bediz Kurt İnci1, Elif Acar2, Fatih Gürler1

  • 1Medical Oncology Department, Gazi University Hospital, 2906500 Ankara, Turkey.

Journal of Clinical Medicine
|June 27, 2024

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View abstract on PubMed

Summary
This summary is machine-generated.

This study investigated immune checkpoint markers like PD-L1 in sarcoma patients. While PD-L1 alone didn't predict survival, OX40 expression positively impacted overall survival in multivariate analysis.

Area of Science:

  • Immunology
  • Oncology
  • Pathology

Background:

  • Sarcomas are rare cancers with complex immune microenvironments.
  • Immune checkpoint pathways, including OX40, TIM-3, LAG-3, and PD-L1, are crucial in regulating anti-tumor T-cell responses.
  • Understanding these pathways' role in sarcoma is vital for developing effective immunotherapies.

Purpose of the Study:

  • To evaluate the expression of OX40, TIM-3, LAG-3, and PD-L1 in sarcoma patients.
  • To determine the relationship between these markers and overall survival (OS).
  • To explore potential correlations between these immune checkpoint markers.

Main Methods:

  • Immunohistochemical evaluation of OX40, LAG-3, TIM-3, and PD-L1 expression in 111 sarcoma patients.
  • Analysis of expression levels in tumor cells and inflammatory cells.
Keywords:
LAG-3OX40PD-L1TİM-3

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  • Univariate and multivariate analyses correlating marker expression with OS, considering tumor grade and stage.

    • Main Results:

    • PD-L1 staining was observed in tumor cells; OX40, LAG-3, and TIM-3 staining were found in inflammatory cells.
    • Univariate analysis showed no significant association between individual marker expression and OS.
    • Multivariate analysis revealed a positive impact of OX40 staining on OS (p = 0.009).
    • Significant positive correlations were found between PD-L1 and TIM-3 (p = 0.002) and PD-L1 and LAG-3 (p = 0.001).

    Conclusions:

    • Individual expression of PD-L1, OX40, TIM-3, and LAG-3 did not significantly correlate with OS in sarcoma patients.
    • OX40 expression demonstrated a positive association with improved OS when considering other factors.
    • Correlations between PD-L1, TIM-3, and LAG-3 suggest potential for combination immunotherapies to improve sarcoma patient survival.
    sarcoma