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Title:
Association Between Telomerase Reverse Transcriptase Promoter Mutations and Melanoma Prognosis: A Meta-Analysis
Authors:  Qing Li, M.D., Jinzhan Zhang, M.S., Tingting Li, M.S., and Xiaojing Kang, Ph.D.
  Objective: The association between telomerase reverse transcriptase (TERT) promoter mutation and outcome of melanoma is unclear and controversial. We aim to conduct a meta-analysis and investigate whether the TERT promoter mutation is a prognostic factor of melanoma.
Study Design:
Appropriate studies were searched in 3 databases: PubMed, Web of Science, and Embase. Pooled hazard ratios (HRs) were counted through random effects model.
Results:
Heterogeneity was moderate in overall survival (OS) (I2=43.7%, p=0.059) and low in disease-free survival (DFS) (I2=0.0%, p=0.587). Sensitivity analysis indicated that the removal of any of the study did not affect the final results. Evidence for publication bias was not found (Begg’s test, p=0.281; Egger’s test, p=0.078). The pooled OS HRs from combined effects analysis was determined (HR 1.07; 95% CI 0.83–1.39, p=0.585), together with the pooled HRs of DFS (HR 1.65; 95% CI 1.02–2.66, p=0.042). TERT promoter mutation predicted a good outcome in meta-static melanoma patients (HR 0.66; 95% CI 0.46–0.96, p=0.042). The pooled HRs of combined mutation in TERT promoter and BRAF (HR 6.27; 95% CI 2.7–14.58, p=0.000) predicted a bad outcome in melanoma patients.
Conclusion:
TERT promoter mutation significantly predicted poor DFS outcome but, on the contrary, predicted a good outcome in metastatic melanoma patients. The combined TERT promoter and BRAF mutation was a significant independent factor of OS in melanoma patients.
Keywords:  melanoma; meta-analysis; mutation; prognosis; promoter regions, genetic; skin neoplasms; telomerase; TERT promoter mutation; TERT protein, human
   
   
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