Yonsei Med J.  2018 Aug;59(6):717-726. 10.3349/ymj.2018.59.6.717.

Ataxia-Telangiectasia-Mutated Protein Expression as a Prognostic Marker in Adenoid Cystic Carcinoma of the Salivary Glands

Affiliations
  • 1Oral Cancer Research Institute, Department of Oral Pathology, Brain Korea 21 PLUS Project, Yonsei University College of Dentistry, Seoul, Korea. jink@yuhs.ac
  • 2Dental School of Mongolian National University of Medical Science, Ulaanbaatar, Mongolia.
  • 3Department of Pathology, Yanbian University Hospital, Yanji City, Jilin Province, China.
  • 4Brain Korea 21 Project, Yonsei University College of Dentistry, Seoul, Korea.
  • 5Department of Oral Pathology, BK21 Plus Project, School of Dentistry, Pusan National University, Yangsan, Korea. apollon@pusan.ac.kr

Abstract

PURPOSE
Adenoid cystic carcinoma (ACC) is a high-grade malignant tumor of the salivary glands, clinically characterized by multiple recurrences and late distant metastasis. Biological markers for assessing the prognosis of ACC have remained elusive. The purpose of this study was to investigate whether the protein expressions of ataxia telangiectasia mutated (ATM), p53, and ATM-mediated phosphorylated p53 are related to patient survival in ACC.
MATERIALS AND METHODS
In this study, 48 surgical samples were used to assess the expressions of ATM and its downstream target p53. Fisher's exact test and Kaplan-Meier analysis were conducted to evaluate the role of ATM, p53, and phospho-p53 (S15) protein expressions in predicting patient survival and distant metastasis.
RESULTS
Myb expression was positive in 85.4% of ACCs, but did not reflect patient survival rate. In contrast, low expression of ATM in cancer cells was significantly correlated with poor survival rate (p=0.037). Moreover, under positive p53 expression, low expression of ATM was highly predictive of poor survival in ACC (p=0.017).
CONCLUSION
These data indicate that combined assessment of ATM and p53 expression can serve as a useful prognostic marker for assessing survival rate in patients with ACC of the salivary glands.

Keyword

Adenoid cystic carcinoma; ataxia telangiectasia mutated (ATM); p53; prognostic marker; salivary gland

MeSH Terms

Adenoids*
Ataxia Telangiectasia
Biomarkers
Carcinoma, Adenoid Cystic*
Humans
Kaplan-Meier Estimate
Neoplasm Metastasis
Prognosis
Recurrence
Salivary Glands*
Survival Rate
Biomarkers
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