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Companion diagnostics for the targeted therapy of gastric cancer

World Journal of Gastroenterology 2015年第39期21卷 10948-10955页

作者： changhoon yoo Young Soo Park Departments of Oncology Asan Medical Center University of Ulsan College of Medicine Department of Pathology Asan Medical Center University of Ulsan College of Medicine

Gastric cancer is the fourth most common type ofcancer and represents a major cause of cancer-related deaths worldwide. With recent biomedical advances in our understanding of the molecular characteristics of gastric cancer, many genetic alterations have been identified as potential targets for its treatment. Multiple novel agents are currently under development as the demand for active agents that improve the survival of gastric cancer patients constantly increases. Based on lessons from previous trials of targeted agents, it is now widely accepted that the establishment of an optimal diagnostic test to select molecularly defined patients is of equal importance to the development of active agents against targetable genetic alterations. Herein, we highlight the current status and future perspectives of companion diagnostics in the treatment of gastric cancer.

关键词： Companion diagnostics gastric cancer human epiderm

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Optimizing radiotherapy with immune checkpoint blockade in hepatocellular carcinoma

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World Journal of Gastroenterology 2019年第20期25卷 2416-2429页

作者： changhoon Choi Gyu Sang yoo Won Kyung Cho Hee Chul Park Department of Radiation Oncology Samsung Medical CenterSeoul 06351South Korea Department of Radiation Oncology Samsung Medical CenterSungkyunkwan University School of MedicineSeoul 06351South Korea

Hepatocellular carcinoma (HCC) is the fifth most common cancer, and its incidence is rapidly increasing in North America and Western Europe as well as South-East Asia. Patients with advanced stage HCC have very poor outcomes;therefore, the discovery of new innovative approaches is urgently needed. Cancer immunotherapy has become a game-changer and revolutionized cancer treatment. A comprehensive understanding of tumor-immune interactions led to the development of immune checkpoint inhibitors (ICIs) as new therapeutic tools, which have been used with great success. Targeting immune checkpoint molecules such as programmed cell death-1 (PD-1) and cytotoxic T lymphocyteassociated protein-4 (CTLA-4) reinvigorates anti-tumor immunity by restoring exhausted T cells. Despite their effectiveness in several types of cancer, of the many immune suppressive mechanisms limit the efficacy of ICI monotherapy. Radiation therapy (RT) is an essential local treatment modality for a broad range of malignancies, and it is currently gaining extensive attention as a promising combination partner with ICIs because of its ability to trigger immunogenic cell death. The efficacy of combination approaches using RT and ICIs has been well documented in numerous preclinical and clinical studies on various types of cancers but not HCC. The application of ICIs has now expanded to HCC, and RT is recognized as a promising modality in HCC. This review will highlight the current roles of PD-1 and CTLA-4 therapies and their combination with RT in the treatment of cancers, including HCC. In addition, this review will discuss the future perspectives of the combination of ICIs and RT in HCC treatment.

关键词： Hepatocellular carcinoma Radiation therapy Immune checkpoint inhibitors Abscopal effect

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