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논문 기본 정보

자료유형
학술저널
저자정보
Seo Ree Kim (Division of Medical Oncology Department of Internal Medicine Bucheon St. Mary's Hospital) Kab Soo Shin (카톨릭성모병원) 박재명 (가톨릭대학교) 이한홍 (가톨릭대학교) 송교영 (가톨릭대학교) 이성학 (가톨릭대학교) Bohyun Kim (Department of Gastric Cancer Centre Seoul St. Mary's Hospital The Catholic University of Korea) 김상엽 (서울아산병원) Junyoung Seo (Asan Institute for Life Sciences Asan Medical Center University of Ulsan College of Medicine) Jeong-Oh Kim (Cancer Research Institute College of Medicine The Catholic University of Korea) Sang Young Roh (Division of Medical Oncology Department of Internal Medicine College of Medicine Seoul St. Mary’s H) 김인호 (가톨릭대학교)
저널정보
대한위암학회 Journal of Gastric Cancer Journal of Gastric Cancer 제20권 제4호
발행연도
2020.1
수록면
408 - 420 (13page)

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Purpose: Isoform 2 of tight junction protein claudin-18 (CLDN18.2) is a potential target for gastric cancer treatment. A treatment targeting CLDN18.2 has shown promising results in gastric cancer. We investigated the clinical significance of CLDN18.2 and other cell-adherens junction molecules (Rho GTPase-activating protein [RhoGAP] and E-cadherin) in metastatic diffuse-type gastric cancer (mDGC). Materials and Methods: We evaluated CLDN18.2, RhoGAP, and E-cadherin expression using two-plex immunofluorescence and quantitative data analysis of H-scores of 77 consecutive mDGC patients who received first-line platinum-based chemotherapy between March 2015 and February 2017. Results: CLDN18.2 and E-cadherin expression was significantly lower in patients with peritoneal metastasis (PM) than those without PM at the time of diagnosis (P=0.010 and 0.013, respectively), whereas it was significantly higher in patients who never developed PM from diagnosis to death than in those who did (P=0.001 and 0.003, respectively). Meanwhile, CLDN18.2 and E-cadherin expression levels were significantly higher in patients with bone metastasis than in those without bone metastasis (P=0.010 and 0.001, respectively). Moreover, we identified a positive correlation between the expression of CLDN18.2 and E-cadherin (P<0.001), RhoGAP and CLDN18.2 (P=0.004), and RhoGAP and E-cadherin (P=0.001). Conversely, CLDN18.2, RhoGAP, and E-cadherin expression was not associated with chemotherapy response and survival. Conclusions: CLDN18.2 expression was reduced in patients with PM but significantly intact in those with bone metastasis. Furthermore, CLDN18.2 expression was positively correlated with other adherens junction molecules, which is clinically associated with mDGC and PM pathogenesis.

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