Carcinogenic potential in regenerated mucosa after endoscopic resection of esophageal squamous cell carcinoma

Author:

Akizue Naoki1ORCID,Okimoto Kenichiro1ORCID,Hirotsu Yosuke2,Amemiya Kenji2,Kaneko Tatsuya1,Ohta Yuki1,Taida Takashi1,Saito Keiko1,Matsumura Tomoaki1,Nishimura Motoi3,Matsushita Kazuyuki3,Mochizuki Hitoshi2,Chiba Tetsuhiro1,Arai Makoto4ORCID,Kato Jun1,Omata Masao25,Kato Naoya1

Affiliation:

1. Department of Gastroenterology, Graduate School of Medicine Chiba University Chiba Japan

2. Genome Analysis Center Yamanashi Prefectural Central Hospital Kofu Japan

3. Division of Clinical Genetics and Proteomics, Department of Laboratory Medicine Chiba University Hospital Chiba Japan

4. Department of Gastroenterology Tokyo Women's Medical University Yachiyo Medical Center Yachiyo Japan

5. Tokyo University Tokyo Japan

Abstract

AbstractBackground and AimLittle is known about genetic mutations in the regenerated mucosa (RM) after endoscopic resection (ER) of esophageal carcinoma. Thus, this study investigates the status of genetic variation in RM after ER of esophageal squamous cell carcinoma (ESCC).MethodsThe study cohort included 19 patients with ESCC. We used an esophageal carcinoma panel to identify target sequences for squamous cell carcinoma (SCC), background mucosa (BM), and RM after ER of ESCC. We used OncoKB to check whether each mutation was a putative driver.ResultsWe identified 77 mutations of 32 genes in SCC, 133 mutations of 34 genes in BM, and 100 mutations of 29 genes in RM. Putative driver mutations were identified in 20 mutations in 14 cases in SCC, 16 mutations in 10 cases in BM, and 7 mutations in 11 cases in RM. The rate of putative driver mutations to total mutations was significantly lower in RM (26% in SCC vs 12% in BM vs 7% in RM, P = 0.009). Additionally, the rate of cases with TP53 putative driver mutations was significantly lower in RM (63% in SCC vs 37% in BM vs 16% in RM, P = 0.011). The percentage of putative driver mutations and the percentage of cases with a putative driver of TP53 were significantly lower in RM.ConclusionEsophageal RM after ER of ESCC could have a lower risk of carcinogenesis.

Publisher

Wiley

Subject

Gastroenterology,Hepatology

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