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Updated: Mar 28, 2026

Modeling Oral-Esophageal Squamous Cell Carcinoma in 3D Organoids
Published on: December 23, 2022
Aberrant methylation of the TERT promoter in esophageal squamous cell carcinoma
Jiaying Deng1, Daizhan Zhou2, Junhua Zhang3
1Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.
Abstract:
A recent study indicated that upstream of the transcription start site (UTSS) hypermethylation of the telomerase reverse transcriptase (TERT) gene was associated with tumor progression and poor prognosis in pediatric brain tumors. The potential for methylation-mediated regulation of the UTSS region of the TERT gene in esophageal squamous cell carcinoma (ESCC) has not yet been investigated. Here, TERT methylation was investigated in tumor and paired adjacent non-cancerous tissues (ANT) from 185 ESCC patients, and the expression of TERT was investigated in 26 tumors paired with ANTs selected from the same cohort. The methylation level of TERT was analyzed in three different regions: region 1, region 2, and the UTSS region. Comparison and correlation of methylation level and clinical features were analyzed in the abovementioned regions. The results showed that the methylation level of TERT was significantly elevated in the tumor relative to the ANT in ESCC. TERT RNA expression was significantly reduced in primary tumors. Tumor stage was the major determinant of survival. The UTSS region may not be an accessible biomarker for ESCC.
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