Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, NY, USA.
Onco Targets Ther. 2012;5:297-308. doi: 10.2147/OTT.S28032. Epub 2012 Oct 23.
In this article, we focus on the current and emerging treatments in nasopharyngeal cancer (NPC). A detailed evolution of the current standard of care, and new techniques and treatment options will be reviewed. Intergroup 0099 established the role for chemoradiotherapy (chemo-RT) in the treatment of nasopharyngeal carcinoma. Multiple randomized Phase III trials have shown the benefit of chemo-RT; however, none of these studies utilized modern radiotherapy (RT) techniques of intensity-modulated radiation therapy (IMRT). IMRT has the ability to deliver high doses of radiation to the target structures while sparing adjacent bystander healthy tissues, and has now become the preferred RT treatment modality. Chemotherapy also has had a shifting paradigm of induction and/or adjuvant chemotherapy combined with RT alone, to the investigation with concurrent chemo-RT. New treatment options including targeted monoclonal antibodies and small molecule tyrosine kinase inhibitors are being studied in NPC. These new biologic therapies have promising in vitro activity for NPC, and emerging clinical studies are beginning to define their role. RT continues to expand its capabilities, and since IMRT and particle therapy, specifically intensity-modulated proton therapy (IMPT), has reports of impressive dosimetric efficacy in-silica. Adaptive RT is attempting to reduce toxicity while maintaining treatment efficacy, and the clinical results are still in their youth. Lastly, Epstein- Barr virus (EBV) DNA has recently been studied for prediction of tumor response and its use as a biomarker is increasingly promising to aid in early detection as well as supplementing the current staging system. RT with or without chemotherapy remains the standard of care for nasopharyngeal carcinoma. Advances in RT technique, timing of chemotherapy, biologically targeted agents, particle therapy, adaptive RT, and the incorporation of EBV DNA as a biomarker may aid in the current and future treatment of nasopharyngeal cancer.
在本文中,我们重点介绍鼻咽癌(NPC)的当前和新兴治疗方法。我们将详细探讨当前标准治疗方法的演变,以及新的技术和治疗选择。国际癌症研究协作组织 0099 研究组确立了放化疗(chemo-RT)在鼻咽癌治疗中的地位。多项随机 III 期试验表明了 chemo-RT 的益处;然而,这些研究均未采用现代放疗(RT)技术——调强放疗(IMRT)。IMRT 能够将高剂量辐射递送至靶区,同时保护相邻的正常组织,现已成为首选的 RT 治疗方式。化疗也从单独 RT 联合诱导或辅助化疗的模式发生了转变,开始探索同期放化疗。靶向单克隆抗体和小分子酪氨酸激酶抑制剂等新的治疗选择正在 NPC 中进行研究。这些新的生物疗法在 NPC 体外具有很有前途的活性,新的临床研究也开始确定它们的作用。RT 不断扩展其能力,自 IMRT 和粒子疗法(特别是强度调制质子治疗,IMPT)出现以来,在计算机模拟中报告了令人印象深刻的剂量学疗效。自适应 RT 试图在保持治疗效果的同时降低毒性,其临床结果仍处于起步阶段。最后,最近研究了 Epstein-Barr 病毒(EBV)DNA 以预测肿瘤反应,并且其作为生物标志物的用途越来越有希望用于早期检测以及补充当前的分期系统。放化疗仍是鼻咽癌的标准治疗方法。RT 技术的进步、化疗时机、生物靶向药物、粒子疗法、自适应 RT 以及 EBV DNA 作为生物标志物的应用,可能有助于当前和未来 NPC 的治疗。