Chen Viola J, Hernandez-Meza Gabriela, Agrawal Prashasti, Zhang Chiyuan A, Xie Lijia, Gong Cynthia L, Hoerner Christian R, Srinivas Sandy, Oermann Eric K, Fan Alice C
Division of Oncology, Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA.
Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
Cancers (Basel). 2019 Jul 17;11(7):1000. doi: 10.3390/cancers11071000.
With 15 drugs currently approved for the treatment of metastatic renal cell carcinoma (mRCC) and even more combination regimens with immunotherapy on the horizon, there remains a distinct lack of molecular biomarkers for therapeutic efficacy. Our study reports on real-world clinical outcomes of mRCC patients from a tertiary academic medical center treated with empirically selected standard-of-care therapy. We utilized the Stanford Renal Cell Carcinoma Database (RCCD) to report on various outcome measures, including overall survival (OS) and the median number of lines of targeted therapies received from the time of metastatic diagnosis. We found that most metastatic patients did not survive long enough to attempt even half of the available targeted therapies. We also noted that patients who failed to receive a clinical benefit within the first two lines of therapy could still go on to experience clinical benefit in later lines of therapy. The term, "clinical benefit" was assigned to a line of therapy if a patient remained on drug treatment for three months or longer. Moreover, patients with clinical benefit in at least one line of therapy experienced significantly longer OS compared to those who did not have clinical benefit in at least one line of therapy. Developing biomarkers that identify patients who will receive clinical benefit in individual lines of therapy is one potential strategy for achieving rational drug sequencing in mRCC.
目前有15种药物被批准用于治疗转移性肾细胞癌(mRCC),而且更多的免疫疗法联合方案也即将出现,但治疗效果的分子生物标志物仍然明显缺乏。我们的研究报告了来自一家三级学术医疗中心的mRCC患者接受经验性选择的标准治疗的真实世界临床结果。我们利用斯坦福肾细胞癌数据库(RCCD)报告了各种结果指标,包括总生存期(OS)以及从转移诊断时起接受的靶向治疗线数的中位数。我们发现,大多数转移性患者存活时间不够长,甚至无法尝试一半的可用靶向治疗。我们还注意到,在前两线治疗中未获得临床益处的患者在后续治疗线中仍可能获得临床益处。如果患者接受药物治疗持续三个月或更长时间,则将该治疗线定义为“临床获益”。此外,与在至少一线治疗中未获得临床益处的患者相比,在至少一线治疗中获得临床益处的患者总生存期显著更长。开发能够识别在各治疗线中获得临床益处的患者的生物标志物,是在mRCC中实现合理药物排序的一种潜在策略。