Genomic Study of Relapse Esophageal Cancer After Radiotherapy

Status Recruiting

Clinical Trial Summary

Radiotherapy plays an important role in multidisciplinary treatment of esophageal cancer. However, about half patients received radiotherapy occurred relapse. Once relapse occurred, there is no better treatment strategy. Genomic study of relapsed esophageal cancer is seldom. So the investigators attempt to collect relapsed tissue to conduct with whole exome sequencing in order to investigate the genome landscape of recurrence esophageal cancer.

Clinical Trial Description

Tumor tissue of patients received radiotherapy with diagnosis of recurrence between Jan 1, 2010 and Dec 1, 2020 were collected retrospectively. Recurrence tumor tissue is collected between Dec 31, 2020 and Dec 31, 2022 prospectively. Blood and preradiotherapy tumor tissue were also collected to be as contrast. A total of 100 paired blood, preradiotherapy tumor tissue and relapse tumor tissue were collected. What is more, a total of 100 paired blood and preradiotherapy tumor tissue with diagnosis of no recurrence were collected. All samples were conducted with whole exome sequencing. Here the investigators define recurrence period as within 2 years and no recurrence period as more than 3 years after radiotherapy. Criteria of relapse: (1) pathologic diagnosis is squamous carcinoma before radiotherapy;(2) received radiotherapy; (3)pathologic diagnosis is also squamous carcinoma after radiotherapy; (4) clinical symptoms including feeding obstruction etc; (5) imaging evidence showed disease progression. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT04694391
Study type	Observational
Source	Fudan University
Contact	Kuaile Zhao, doctor
Phone	18017312534
Email	kuaile_z@sina.com
Status	Recruiting
Phase
Start date	September 14, 2012
Completion date	December 31, 2022

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