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SALL2 Is a Novel Prognostic Methylation Marker in Patients with Oral Squamous Carcinomas: Associations with SALL1 and SALL3 Methylation Status.
Authors of this article are:
Imai A, Mochizuki D, Misawa Y, Nakagawa T, Endo S, Mima M, Yamada S, Kawasaki H, Kanazawa T, Misawa K.
A summary of the article is shown below:
Staging and pathological grading systems are convenient, but imperfect predictors of recurrence of head and neck squamous cell carcinoma. Therefore, to identify potential alternative prognostic markers, we investigated the methylation status of the promoter of Sal-like protein 2 (SALL2). SALL2 mRNA expression was absent in 8/9 (88.9%) University of Michigan squamous cell carcinoma cell lines, whereas two nonmalignant cell lines had stable expression. The normalized methylation value of SALL2 in cancer cell lines was significantly higher than in normal cell lines. SALL2 methylation found in 74 of 233 (31.8%) tumor specimens was correlated with the methylation status of both SALL1 and SALL3. SALL2 methylation was not associated with any difference in disease-free survival (DFS). Therefore, the presence of SALL2 methylation was statistically correlated with a decrease in DFS in patients with oral cancer (log-rank test, p = 0.032). Furthermore, it was associated with disease recurrence in 36.2% of oral cancer cases, with an odds ratio of 2.922 (95% confidence interval = 1.198-7.130; p = 0.018) by multivariate Cox proportional hazard regression analysis. This study suggests that cytosine-phosphate- guanosine (CpG) hypermethylation is a likely mechanism of SALL2 inactivation and supports the hypothesis that SALL2 could serve as an important clinical risk assessment.
Check out the article’s website on Pubmed for more information:
This article is a good source of information and a good way to become familiar with topics such as: Adult;Aged;Aged, 80 and over;Biomarkers, Tumor;Carcinoma, Squamous Cell;Disease-Free Survival;Female;Homeodomain Proteins;Humans;Male;Middle Aged;Mouth Neoplasms;Transcription Factors.
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