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Renal cell carcinoma: An update for the practicing urologist.

ABSTRACT: Systemic therapy for metastatic renal cell carcinoma (mRCC) has evolved drastically, with agents targeting vascular endothelial growth factor (VEGF) and the mammalian target of rapamycin (mTOR) now representing a standard of care. The present paper is to review the current status of relevant clinical trials that were either recently completed or ongoing. (1) Though observation remains a standard of care following resection of localized disease, multiple trials are underway to assess VEGF- and mTOR-directed therapies in this setting. (2) While the preponderance of retrospective data favors cytoreductive nephrectomy in the context of targeted agents, prospective data to support this approach is still forthcoming. (3) The first-line management of mRCC may change substantially with multiple studies exploring vaccines, immune checkpoint inhibitors, and novel targeted agents currently underway. In general, prospective studies that will report within the next several years will be critical in defining the role of adjuvant therapy and cytoreductive nephrectomy. Over the same span of time, the current treatment paradigm for first-line therapy may evolve.

SUBMITTER: Pal SK

PROVIDER: S-EPMC5730695 | biostudies-other | 2015 Jan

REPOSITORIES: biostudies-other

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Renal cell carcinoma: An update for the practicing urologist.

Pal Sumanta K SK Bergerot Paulo P Figlin Robert A RA

Asian journal of urology 20150101 1

Systemic therapy for metastatic renal cell carcinoma (mRCC) has evolved drastically, with agents targeting vascular endothelial growth factor (VEGF) and the mammalian target of rapamycin (mTOR) now representing a standard of care. The present paper is to review the current status of relevant clinical trials that were either recently completed or ongoing. (1) Though observation remains a standard of care following resection of localized disease, multiple trials are underway to assess VEGF- and mT ...[more]

PMID: 29264115

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Project description:Metastatic renal cell cancer (mRCC) management has undergone a paradigm shift in recent decades. The first revolution came with the emergence of vascular endothelial growth factor inhibitors; there was a second wave with the unprecedented success of checkpoint inhibitors, and then the latest approach, which is becoming the new care standard in mRCC, of combining these two strategies in different ways. Updated results of Checkmate-214 after 42 mo of follow-up were consistent with previously published results showing the superiority of nivolumab/ipilimumab over sunitinib in progression free survival (PFS), overall survival (OS), and objective response rate (ORR) in intermediate and high-risk patients. However, several studies presented at the American Society of Clinical Oncology 2020 suggested that the best place, and so far, the only one for nivolumab/ipilimumab is the frontline setting. The update on Keynote-426 after 23 mo of follow-up showed no superiority of pembroli-zumab/axitinib over sunitinib in favorable-risk mRCC, suggesting that it should no longer be the first line of choice in low-risk patients. Finally, the phase III Checkmate 9ER trial results revealed the superiority of nivolumab/cabozantinib vs sunitinib in PFS, OS, and ORR, providing a new first-line option among all International Metastatic RCC Database Consortium risk patients. Some phase II clinical trials also presented this year showed promising results with new combination therapies such as nivolumab/sitravatinib, cabozantinib/atezolizumab, and lenvatinib/pembrolizumab, providing promising grounds upon which to start phase III studies. In addition, other works are using novel therapeutic agents with different mechanisms of action, including telaglenastat (a glutaminase inhibitor), entinostat [an inhibitor of histone deacetylases (HDACs)], and olaparib and talazoparib, poly(ADP-ribose) polymerase inhibitors widely used in other tumors. However, some questions regarding mRCC management still need to be addressed, such as head-to-head comparisons between the current options, treatment sequencing, non-clear cell mRCC, and the role of biomarkers to ascertain the best treatment choice.

Project description:OPINION STATEMENT:Merkel cell carcinoma (MCC) is a rare and aggressive neuroendocrine tumor of the skin. Early-stage disease can be cured with surgical resection and radiotherapy (RT). Sentinel lymph node biopsy (SLNB) is an important staging tool, as a microscopic MCC is frequently identified. Adjuvant RT to the primary excision site and regional lymph node bed may improve locoregional control. However, newer studies confirm that patients with biopsy-negative sentinel lymph nodes may not benefit from regional RT. Advanced MCC currently lacks a highly effective treatment as responses to chemotherapy are not durable. Recent work suggests that immunotherapy targeting the programmed cell death receptor 1/programmed cell death ligand 1 (PD-1/PD-L1) checkpoint holds great promise in treating advanced MCC and may provide durable responses in a portion of patients. At the same time, high-throughput sequencing studies have demonstrated significant differences in the mutational profiles of tumors with and without the Merkel cell polyomavirus (MCV). An important secondary endpoint in the ongoing immunotherapy trials for MCC will be determining if there is a response difference between the virus-positive MCC tumors that typically lack a large mutational burden and the virus-negative tumors that have a large number of somatic mutations and predicted tumor neoantigens. Interestingly, sequencing studies have failed to identify a highly recurrent activated driver pathway in the majority of MCC tumors. This may explain why targeted therapies can demonstrate exceptional responses in case reports but fail when treating all comers with MCC. Ultimately, a precision medicine approach may be more appropriate for treating MCC, where identified driver mutations are used to direct targeted therapies. At a minimum, stratifying patients in future clinical trials based on tumor viral status should be considered as virus-negative tumors are more likely to harbor activating driver mutations.

Dataset Information

Renal cell carcinoma: An update for the practicing urologist.

Publications

Renal cell carcinoma: An update for the practicing urologist.

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