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장현(Hyun Chang) 대한두경부종양학회 2017 대한두경부 종양학회지 Vol.33 No.1
두경부 편평상피세포암은 전세계적으로 6번째로 흔하며 예후가 불량한 암종이다. 면역 감시는 두경부암의 발생과 진행을 억제하는 중요한 기전으로 알려져 있다. 두경부암세포는 면역 감시를 T세포의 관용을 유도하거나 체크포인트를 통한 T세포 기능을 억제하는 등의 방법으로 회피할 수 있다. 한편 진행성 두경부암 임상연구에서 체크포인트 억제제는 명확한 항종양효과를 입증하였다. 이처럼 면역항암제가 중요한 암치료 방법으로 떠오르는 이때에 본 종설은 두경부암의 면회회피 기전 및 임상적용근거에 대한 최근 지식을 정리하였다. Head and neck squamous cell carcinoma (HNSCC) is the sixth most common cancer globally with high morbidity and mortality. Immune surveillance is well recognized as an important mechanism to prevent development or progression of HNSCC. HNSCC can escape the immune system through multiple mechanisms including development of tolerance in T cells and inhibition of T-cell-related pathways, generally referred to as checkpoint inhibitors. Recent clinical trials have demonstrated a clear advantage in advanced HNSCC patients treated with immune checkpoint blockade. Right at the front of the new era of immunotherapy, we will review current knowledge of immune escape mechanisms and clinical implication for HNSCC.
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천재경 대한의사협회 2023 대한의사협회지 Vol.66 No.2
Background: Immunotherapy has become established as a new cancer treatment that enhances patients’ immune systems’ ability to fight cancer. Immune checkpoint inhibitors (ICI) have demonstrated remarkable benefits in the treatment of a range of cancer types. The increasing use of immune-based therapies has exposed a discrete group of immune-related adverse effects. Effective recognition and treatment of ICI-induced toxicities have emerged as essential goals of ICI management. Current Concepts: Gastrointestinal (GI) and hepatic adverse effects of ICI treatment are relatively common. Immune-related GI or hepatic toxicities occur in approximately 30% of patients. The incidence of grade 3 or 4 adverse effects ranges from 0.5% to 2%. The management strategy for immune-related adverse effects depends on their severity. In general, ICI treatment can be continued with close monitoring for mild (grade 1) GI/hepatic toxicities. ICI treatment should be interrupted for most grade 2 to 4 toxicities, and systemic steroid administration is recommended. If steroids are ineffective, immunosuppressive agents such as infliximab may be used. When symptoms and laboratory values revert to grade 1 or less, ICI treatment may be resumed with caution. Grade 4 toxicities warrant permanent discontinuation of ICI treatment. Discussion and Conclusion: Most immune-related GI and hepatic adverse effects are mild to moderate in severity and can be managed with supportive care, steroid therapy, and other immunomodulatory agents. Management of ICI-related toxicities in the GI and hepatic systems requires close collaboration between the patient, the treating oncologist, and other specialists.
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면역항암치료의 부작용 관리: 호흡계와 신경계를 중심으로
박송이 대한의사협회 2023 대한의사협회지 Vol.66 No.2
Background: The incidence of adverse toxic reactions to immunotherapy using immune checkpoint inhibitors is 2-10% in the respiratory system and 3.9% to 12% in the neurologic system. The severity of adverse effects increases when combined immunotherapeutic agents are administered. Current Concepts: In cases of high-grade toxicity, it is important to discontinue immunotherapy immediately. In cases of grade 3 to 4 toxicity, immunosuppressive corticosteroid therapy is the first-line treatment. Short-term steroid treatment does not affect anti-tumor efficacy. It is thus necessary to use steroids for an appropriate period then carefully taper the steroid dose to prevent recurrence. If no improvement is achieved within 48-72 hours after the administration of steroids, it is essential to initiate multidisciplinary treatment involving related departments and add immunosuppressive drugs. If the patient is administrated immunotherapy again, it may be necessary to permanently discontinue the immunotherapy depending on the toxicity grade that first occurred. Discussion and Conclusion: The primary goals for effective management of immunotherapy-related adverse events are early recognition of symptoms and immediate treatment.
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이희연,고윤호 대한내과학회 2018 대한내과학회지 Vol.93 No.1
Despite advances in cancer therapy, gastric cancer has a poor prognosis and high cancer-related mortality. Based on the molecular characteristics of cancer, specific targeted therapies have shown clinical benefits for various tumors. In addition, immunotherapy using immune checkpoint inhibitors has led to a paradigm shift in cancer treatment and shown remarkable results in some solid tumors. Although immunotherapy has been actively applied to gastric cancer, the efficacy is unsatisfactory compared with other solid tumors, such as melanoma and lung cancers. This is because of the complex mechanism of gastric cancer, tumor heterogeneity, heterogeneity among patients, and the absence of appropriate biomarkers to predict response. An effective new cancer treatment strategy that combines targeted therapies and various immunotherapies based on biological markers such as tumor mutation burden and microsatellite instability is urgently needed. Furthermore, customized treatment is necessary to overcome tumor heterogeneity.
ScienceON
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