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Four-color Fluorescence Immunohistochemistry of T-cell Subpopulations in Archival Formalin-fixed, Paraffin-embedded Human Oropharyngeal Squamous Cell Carcinoma Samples
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Association of CTLA-4 gene polymorphism with oral squamous cell carcinoma

Y-K Wong1, K-W Chang, C-Y Cheng

  • 1Department of Oral and Maxillofacial Surgery, Veterans General Hospital, Taichung, Taiwan.

Journal of Oral Pathology & Medicine : Official Publication of the International Association of Oral Pathologists and the American Academy of Oral Pathology
|January 6, 2006
PubMed
Abstract

Insights

The CTLA-4 A/A genotype is linked to poorer survival in oral squamous cell carcinoma (OSCC) patients in Taiwan. This specific polymorphism may indicate a younger age of onset for OSCC.

Area of Science:

  • Immunogenetics
  • Oncology
  • Cancer Research

Background:

  • Oral squamous cell carcinoma (OSCC) presents a global health challenge.
  • Cytolytic T lymphocytes are crucial for tumor immunity.
  • CTLA-4 (Cytotoxic T lymphocyte-associated antigen 4) regulates T-lymphocyte activation and immune tolerance.

Purpose of the Study:

  • To investigate the association between CTLA-4 gene polymorphism and OSCC risk and outcomes.
  • To explore the role of CTLA-4 in the immune response to oral cancer.

Main Methods:

  • Restriction fragment length polymorphism (RFLP) was used to analyze the CTLA-4 +49 A/G polymorphism.
  • Genotype and phenotype frequencies were compared between 118 OSCC patients and 147 healthy controls.
  • Fisher's exact test was applied for statistical evaluation.

Main Results:

  • No significant difference in CTLA-4 polymorphism frequency was observed between OSCC patients and controls.
  • The CTLA-4 A/A genotype was significantly associated with a younger age of OSCC onset (P=0.04).
  • The AA genotype correlated with significantly poorer patient survival (P=0.003).

Conclusions:

  • This study is the first to demonstrate the association between the CTLA-4 A/A polymorphism and poor survival in Taiwanese OSCC patients.
  • The CTLA-4 A/A genotype may serve as a prognostic marker for OSCC, indicating younger onset and reduced survival rates.

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