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Clinical Trial
. 2024 Jan 20;42(3):312-323.
doi: 10.1200/JCO.23.00236. Epub 2023 Nov 6.

Standard Versus Modified Ipilimumab, in Combination With Nivolumab, in Advanced Renal Cell Carcinoma: A Randomized Phase II Trial (PRISM)

Affiliations
Clinical Trial

Standard Versus Modified Ipilimumab, in Combination With Nivolumab, in Advanced Renal Cell Carcinoma: A Randomized Phase II Trial (PRISM)

Naveen S Vasudev et al. J Clin Oncol. .

Abstract

Purpose: Ipilimumab (IPI), in combination with nivolumab (NIVO), is an approved frontline treatment option for patients with intermediate- or poor-risk advanced renal cell carcinoma (aRCC). We conducted a randomized phase II trial to evaluate whether administering IPI once every 12 weeks (modified), instead of once every 3 weeks (standard), in combination with NIVO, is associated with a favorable toxicity profile.

Methods: Treatment-naïve patients with clear-cell aRCC were randomly assigned 2:1 to receive four doses of modified or standard IPI, 1 mg/kg, in combination with NIVO (3 mg/kg). The primary end point was the proportion of patients with a grade 3-5 treatment-related adverse event (trAE) among those who received at least one dose of therapy. The key secondary end point was 12-month progression-free survival (PFS) in the modified arm compared with historical sunitinib control. The study was not designed to formally compare arms for efficacy.

Results: Between March 2018 and January 2020, 192 patients (69.8% intermediate/poor-risk) were randomly assigned and received at least one dose of study drug. The incidence of grade 3-5 trAEs was significantly lower among participants receiving modified versus standard IPI (32.8% v 53.1%; odds ratio, 0.43 [90% CI, 0.25 to 0.72]; P = .0075). The 12-month PFS (90% CI) using modified IPI was 46.1% (38.6 to 53.2). At a median follow-up of 21 months, the overall response rate was 45.3% versus 35.9% and the median PFS was 10.8 months versus 9.8 months in the modified and standard IPI groups, respectively.

Conclusion: Rates of grade 3-5 trAEs were significantly lower in patients receiving modified versus standard IPI. Although 12-month PFS did not meet the prespecified efficacy threshold compared with historical control, informal comparison of treatment groups did not suggest any reduction in efficacy with the modified schedule.

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Conflict of interest statement

The following represents disclosure information provided by authors of this manuscript. All relationships are considered compensated unless otherwise noted. Relationships are self-held unless noted. I = Immediate Family Member, Inst = My Institution. Relationships may not relate to the subject matter of this manuscript. For more information about ASCO’s conflict of interest policy, please refer to www.asco.org/rwc or ascopubs.org/jco/authors/author-center.

Open Payments is a public database containing information reported by companies about payments made to US-licensed physicians (Open Payments).

Figures

FIG 1.
FIG 1.
CONSORT flow diagram.
FIG 2.
FIG 2.
Key trAEs by severity. CTCAE, Common Terminology Criteria for Adverse Events; trAE, treatment-related adverse event.
FIG 3.
FIG 3.
(A) PFS and (B) OS by treatment allocation among the mITT population. mITT, modified intention-to-treat; NR, not reached; OS, overall survival; PFS, progression-free survival.
FIG 4.
FIG 4.
(A) PFS and (B) OS by treatment allocation among the IMDC intermediate-/poor-risk population. IMDC, International Metastatic Renal Cell Carcinoma Database Consortium; NR, not reached; OS, overall survival; PFS, progression-free survival.
FIG 5.
FIG 5.
Summaries of mean (A) QLQ-C30 global health status, (B) FKSI-19 total score, and (C) EQ-5D VAS over time, by randomized allocation. EQ-5D, EuroQol 5-dimension; FKSI, Functional assessment of cancer-therapy Kidney Symptom Index; QLQ-C30, Quality of Life Questionnaire-C30; QoL, quality of life; VAS, visual analogue scale.

References

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