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PROSPER: Phase III RandOmized Study Comparing PERioperative nivolumab versus observation in patients with renal cell carcinoma (RCC) undergoing nephrectomy (ECOG-ACRIN EA8143).

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Allaf, ME; Kim, SE; Master, VA; McDermott, DF; Signoretti, S; Cella, D; Gupta, RT; Cole, S; Shuch, BM; Lara, PLN; Kapoor, A; Heng, DYC ...
Published in: Journal of Clinical Oncology
May 20, 2021

TPS4596 Background: There is no standard adjuvant systemic therapy that increases overall survival (OS) over surgery alone for non-metastatic RCC. Anti-PD-1 nivolumab (nivo) improves OS in metastatic RCC and is well tolerated. In mouse models, priming the immune system prior to surgery with anti-PD-1 results in superior OS compared to adjuvant dosing. Remarkable pathologic responses have been seen with neoadjuvant PD-1 in multiple ph 2 studies in bladder, lung and breast cancers. Phase 2 neoadjuvant RCC trials of nivo show preliminary feasibility and safety with no surgical delays. PROSPER RCC seeks to improve clinical outcomes by priming the immune system with neoadjuvant nivo prior to nephrectomy followed by continued immune system engagement with adjuvant blockade in patients (pts) with high risk RCC compared to standard of care surgery alone. Methods: This global, unblinded, phase 3 National Clinical Trials Network study is accruing pts with clinical stage ≥T2 or TN+ RCC of any histology planned for radical or partial nephrectomy. Select oligometastatic disease is permitted if the pt can be rendered ‘no evidence of disease’ within 12 weeks of nephrectomy (≤3 metastases; no brain, bone or liver). In the investigational arm, nivo is administered 480mg IV q4 weeks with 1 dose prior to surgery followed by 9 adjuvant doses. The control arm is nephrectomy followed by standard of care surveillance. There is no placebo. Baseline tumor biopsy is required only in the nivo arm but encouraged in both. Randomized pts are stratified by clinical T stage, node positivity, and M stage. 805 pts provide 84.2% power to detect a 14.4% absolute benefit in recurrence-free survival at 5 years assuming the ASSURE historical control of ̃56% to 70% (HR = 0.70). The study is powered to evaluate a significant increase in OS (HR 0.67). Critical perioperative therapy considerations such as safety, feasibility, and quality of life metrics are integrated. PROSPER RCC embeds a wealth of translational studies to examine the contribution of the baseline immune milieu and neoadjuvant priming with anti-PD-1 on clinical outcomes. As of February 10, 2021, 704 patients have been enrolled (N = 805). Clinical trial information: NCT03055013.

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Published In

Journal of Clinical Oncology

DOI

EISSN

1527-7755

ISSN

0732-183X

Publication Date

May 20, 2021

Volume

39

Issue

15_suppl

Start / End Page

TPS4596 / TPS4596

Publisher

American Society of Clinical Oncology (ASCO)

Related Subject Headings

  • Oncology & Carcinogenesis
  • 3211 Oncology and carcinogenesis
  • 1112 Oncology and Carcinogenesis
  • 1103 Clinical Sciences
 

Citation

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MLA
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Allaf, M. E., Kim, S. E., Master, V. A., McDermott, D. F., Signoretti, S., Cella, D., … Haas, N. B. (2021). PROSPER: Phase III RandOmized Study Comparing PERioperative nivolumab versus observation in patients with renal cell carcinoma (RCC) undergoing nephrectomy (ECOG-ACRIN EA8143). In Journal of Clinical Oncology (Vol. 39, pp. TPS4596–TPS4596). American Society of Clinical Oncology (ASCO). https://doi.org/10.1200/jco.2021.39.15_suppl.tps4596
Allaf, Mohamad E., Se Eun Kim, Viraj A. Master, David F. McDermott, Sabina Signoretti, David Cella, Rajan T. Gupta, et al. “PROSPER: Phase III RandOmized Study Comparing PERioperative nivolumab versus observation in patients with renal cell carcinoma (RCC) undergoing nephrectomy (ECOG-ACRIN EA8143).” In Journal of Clinical Oncology, 39:TPS4596–TPS4596. American Society of Clinical Oncology (ASCO), 2021. https://doi.org/10.1200/jco.2021.39.15_suppl.tps4596.
Allaf ME, Kim SE, Master VA, McDermott DF, Signoretti S, Cella D, et al. PROSPER: Phase III RandOmized Study Comparing PERioperative nivolumab versus observation in patients with renal cell carcinoma (RCC) undergoing nephrectomy (ECOG-ACRIN EA8143). In: Journal of Clinical Oncology. American Society of Clinical Oncology (ASCO); 2021. p. TPS4596–TPS4596.
Allaf, Mohamad E., et al. “PROSPER: Phase III RandOmized Study Comparing PERioperative nivolumab versus observation in patients with renal cell carcinoma (RCC) undergoing nephrectomy (ECOG-ACRIN EA8143).Journal of Clinical Oncology, vol. 39, no. 15_suppl, American Society of Clinical Oncology (ASCO), 2021, pp. TPS4596–TPS4596. Crossref, doi:10.1200/jco.2021.39.15_suppl.tps4596.
Allaf ME, Kim SE, Master VA, McDermott DF, Signoretti S, Cella D, Gupta RT, Cole S, Shuch BM, Lara PLN, Kapoor A, Heng DYC, Leibovich BC, Michaelson MD, Choueiri TK, Jewett MAS, Maskens D, Harshman LC, Carducci MA, Haas NB. PROSPER: Phase III RandOmized Study Comparing PERioperative nivolumab versus observation in patients with renal cell carcinoma (RCC) undergoing nephrectomy (ECOG-ACRIN EA8143). Journal of Clinical Oncology. American Society of Clinical Oncology (ASCO); 2021. p. TPS4596–TPS4596.

Published In

Journal of Clinical Oncology

DOI

EISSN

1527-7755

ISSN

0732-183X

Publication Date

May 20, 2021

Volume

39

Issue

15_suppl

Start / End Page

TPS4596 / TPS4596

Publisher

American Society of Clinical Oncology (ASCO)

Related Subject Headings

  • Oncology & Carcinogenesis
  • 3211 Oncology and carcinogenesis
  • 1112 Oncology and Carcinogenesis
  • 1103 Clinical Sciences