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C-kit Expression in Oral Leukoplakia.

Anand S Tegginamani1, Vanishree H Shivakumar1, Siti Mazlipah B Ismail2

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C-kit expression was evaluated in oral leukoplakia (OL) to assess malignant transformation risk. The study found limited c-kit expression in OL, suggesting it may not be a unique high-risk marker.

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Area of Science:

  • Oral pathology
  • Oncology
  • Immunohistochemistry

Background:

  • Oral leukoplakia (OL) is a common potentially malignant oral disorder with variable malignant transformation rates.
  • Malignant potential of OL is independent of histopathological grade, influenced by ethnic and environmental factors.
  • Accurate risk prediction for OL progression remains a challenge.

Purpose of the Study:

  • To evaluate c-kit (CD 117) expression in oral leukoplakia (OL) using immunohistochemistry.
  • To investigate the potential of c-kit as a marker for differentiating OL with high and low malignant transformation risk.
  • To compare c-kit expression in OL with oral squamous cell carcinoma (OSCC) and dentigerous cysts (DC).

Main Methods:

  • C-kit immunohistochemistry was performed on tissue samples.
  • Samples included 15 oral leukoplakia (OL), 2 oral squamous cell carcinoma (OSCC), and 2 dentigerous cysts (DC).
  • Expression patterns of c-kit were analyzed in the different oral lesions.

Main Results:

  • Faint cytoplasmic c-kit expression was observed in basal cells of only four OL samples.
  • Oral squamous cell carcinoma (OSCC) and dentigerous cysts (DC) samples showed no c-kit expression.
  • The observed c-kit expression in OL was not consistently indicative of high-risk lesions.

Conclusions:

  • C-kit (CD 117) expression in oral leukoplakia appears limited and may not serve as a unique marker for identifying lesions at high risk of malignant transformation.
  • Further research with larger sample sizes is necessary to validate these findings.
  • The study highlights the need for novel biomarkers for accurate risk stratification of oral leukoplakia.