Associations of the BRAF (V600E) mutation and p53 protein expression with clinicopathological features of papillary thyroid carcinomas patients

  • Authors:
    • Mi Kyung Shin
    • Jeong Won Kim
    • Soo Kee Min
    • Dong Jin Lee
    • Jin Hwan Kim
    • Seung Chul Lee
    • Bong Wha Chung
    • Young Su Ju
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  • Published online on: June 22, 2015     https://doi.org/10.3892/ol.2015.3401
  • Pages: 1882-1888
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Abstract

The BRAF (V600E) mutation is the most prevalent type of genetic alteration that has been identified in papillary thyroid carcinoma (PTC); in addition, previous immunohistochemical studies have revealed the overexpression of p53 protein in PTC. The aim of the present study was to investigate the prevalence of the BRAF (V600E) mutation and the expression of p53 in PTC, as well as to determine any associations between these two factors and the clinicopathological features of PTC. The study was performed on 66 PTC patients who underwent surgical tumor resection between January and December 2012. Polymerase chain reaction‑based DNA amplification was used to analyze extracted DNA from the tumor specimens in order to determine the prevalence of the BRAF (V600E) mutation. In addition, immunohistochemical analysis was employed in order to evaluate the protein expression of p53 in sections of tumor tissue. Furthermore, statistical analysis was performed in order to determine any associations among the BRAF (V600E) mutation prevalence, p53 overexpression and the clinicopathological features of PTC patients, including age, gender, tumor size, multiplicity, lymph node metastasis and extrathyroidal extension. The results revealed that the BRAF (V600E) mutation was observed in 50 (75.8%) of the 66 PTC patients and overexpression of p53 was found in 52 (78.8%) of 66 cases. No significant correlations were observed between the BRAF (V600E) mutation or p53 protein overexpression and the clinicopathological features of patients. However, the BRAF (V600E) mutation demonstrated noteworthy, but non‑significant, correlations with the overexpression of p53 (P=0.0854) and extrathyroidal extension (P=0.0661). In addition, a significant correlation was observed between lymph node metastasis and bilaterality (P=0.0280). In conclusion, the present study demonstrated that the BRAF (V600E) mutation and overexpression of p53 were not significantly correlated with clinicopathological features of PTC, although notable associations were identified between BRAF (V600E) mutation and overexpression of p53 as well as extrathyroidal extension. In addition, lymph node metastasis was significantly associated with bilaterality.
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September-2015
Volume 10 Issue 3

Print ISSN: 1792-1074
Online ISSN:1792-1082

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Spandidos Publications style
Shin MK, Kim JW, Min SK, Lee DJ, Kim JH, Lee SC, Chung BW and Ju YS: Associations of the BRAF (V600E) mutation and p53 protein expression with clinicopathological features of papillary thyroid carcinomas patients. Oncol Lett 10: 1882-1888, 2015
APA
Shin, M.K., Kim, J.W., Min, S.K., Lee, D.J., Kim, J.H., Lee, S.C. ... Ju, Y.S. (2015). Associations of the BRAF (V600E) mutation and p53 protein expression with clinicopathological features of papillary thyroid carcinomas patients. Oncology Letters, 10, 1882-1888. https://doi.org/10.3892/ol.2015.3401
MLA
Shin, M. K., Kim, J. W., Min, S. K., Lee, D. J., Kim, J. H., Lee, S. C., Chung, B. W., Ju, Y. S."Associations of the BRAF (V600E) mutation and p53 protein expression with clinicopathological features of papillary thyroid carcinomas patients". Oncology Letters 10.3 (2015): 1882-1888.
Chicago
Shin, M. K., Kim, J. W., Min, S. K., Lee, D. J., Kim, J. H., Lee, S. C., Chung, B. W., Ju, Y. S."Associations of the BRAF (V600E) mutation and p53 protein expression with clinicopathological features of papillary thyroid carcinomas patients". Oncology Letters 10, no. 3 (2015): 1882-1888. https://doi.org/10.3892/ol.2015.3401