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非透明细胞肾细胞癌:生物学见解、治疗挑战与机遇

Non-clear cell renal cell carcinomas: biological insights and therapeutic challenges and opportunities.

作者信息

Malouf Gabriel G, Joseph Richard W, Shah Amishi Y, Tannir Nizar M

机构信息

Pitié-Salpêtrière Hospital, AP-HP, University Pierre and Marie Curie, Paris, France.

Mayo Clinic Cancer Center, Jacksonville, Florida.

出版信息

Clin Adv Hematol Oncol. 2017 May;15(5):409-418.

Abstract

The non-clear cell renal cell carcinomas (nccRCCs) are a diverse group of rare-variant renal carcinomas. Each subtype harbors a distinct cell of origin and exhibits a distinct clinical behavior and response to therapy. The advent of next-generation sequencing has drastically advanced our understanding of key genetic and epigenetic drivers in these tumors, although mechanistic studies are needed to elucidate pathogenesis. The only 2 randomized clinical trials in nccRCC included patients with diverse histologic subtypes. Both of these trials compared everolimus with sunitinib and provided evidence suggesting that frontline sunitinib is superior to everolimus in terms of progression-free survival. Renal medullary and collecting duct carcinomas do not respond to targeted agents, supporting the use of platinum-based chemotherapy as frontline therapy. Clinical evidence is currently emerging on the efficacy of c-MET inhibitors in patients with papillary type 1 RCC harboring germline mutations. Data on the activity of immune checkpoint inhibitors in this setting are lacking; however, several trials are ongoing in this space. The management of patients with nccRCC likely will improve in the future with histology-driven trials, which may pave the way for personalized therapies based on the molecular characterization of these orphan kidney cancer subtypes. Efforts must also be made to establish in vitro and animal models for testing hypotheses generated through extensive genomic analysis. Ultimately, collaborative national and international studies are urgently needed to improve therapeutic strategies in patients with metastatic disease.

摘要

非透明细胞肾细胞癌(nccRCCs)是一组罕见变异型肾癌。每种亚型都有独特的起源细胞,并表现出独特的临床行为和对治疗的反应。尽管需要进行机制研究来阐明发病机制,但下一代测序技术的出现极大地推进了我们对这些肿瘤关键遗传和表观遗传驱动因素的理解。nccRCC仅有的两项随机临床试验纳入了组织学亚型各异的患者。这两项试验均将依维莫司与舒尼替尼进行了比较,并提供证据表明,在无进展生存期方面,一线使用舒尼替尼优于依维莫司。肾髓质癌和集合管癌对靶向药物无反应,这支持将铂类化疗作为一线治疗方法。目前,关于c-MET抑制剂对携带种系突变的1型乳头状肾细胞癌患者疗效的临床证据正在不断涌现。在这种情况下,缺乏免疫检查点抑制剂活性的数据;然而,该领域正在进行几项试验。未来,通过组织学驱动的试验,nccRCC患者的管理可能会得到改善,这可能为基于这些罕见肾癌亚型分子特征的个性化治疗铺平道路。还必须努力建立体外和动物模型,以检验通过广泛基因组分析产生的假设。最终,迫切需要开展国内和国际合作研究,以改善转移性疾病患者的治疗策略。

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