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Specific p53 mutations predict poor prognosis in oral squamous cell carcinoma
Yutaka Yamazaki1, Itsuo Chiba, Atsuko Hirai
1Oral Diagnosis and Oral Medicine, Department of Oral Pathobiological Science, Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan. yutaka8@den.hokudai.ac.jp
Oral Oncology
|January 3, 2003
Summary
Specific p53 mutations, particularly in DNA-binding regions, correlate with poorer prognoses in oral cancer patients. These mutations are linked to increased locoregional failure and metastasis, indicating their prognostic value.
Area of Science:
- Oncology
- Molecular Biology
Background:
- The tumor suppressor protein p53 plays a critical role in preventing cancer.
- Understanding the impact of specific p53 mutations on oral cancer progression is crucial for improved patient outcomes.
Purpose of the Study:
- To investigate the correlation between p53 mutations in specific regions and clinical outcomes in oral squamous cell carcinoma (SCC).
Main Methods:
- Analysis of p53 mutations in 121 primary oral SCCs using polymerase chain reaction-single-strand conformation polymorphism and yeast functional assays.
- Correlation of mutation locations with clinicopathological parameters and patient prognosis.
Main Results:
- p53 mutations were identified in 42% of oral SCC cases.
- Mutations in DNA-binding surface regions (L2, L3, LSH motif) and conserved regions (II-V) were significantly associated with poorer prognoses.
- These specific mutations also correlated with locoregional failure, lymph node metastasis, and distant metastasis.
Conclusions:
- Specific p53 mutations, especially within DNA-binding surface regions, serve as significant prognostic factors in oral SCC.
- Identifying these mutations can aid in predicting patient outcomes and guiding treatment strategies.