On-treatment C-reactive protein control could predict response to subsequent anti-PD-1 treatment in metastatic renal cell carcinoma

Kimiharu Takamatsu, Ryuichi Mizuno, Yuto Baba, Yota Yasumizu, Nobuyuki Tanaka, Suguru Shirotake, Toshikazu Takeda, Shinya Morita, Kazuhiro Matsumoto, Takeo Kosaka, Hiroshi Asanuma, Masafumi Oyama, Shuji Mikami, Mototsugu Oya

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: The aim of this study was to evaluate the clinical significance of the on-treatment C-reactive protein (CRP) status during systemic treatment as the predictive marker for the response of subsequent nivolumab monotherapy in patients with refractory metastatic renal cell carcinoma (mRCC). Patients and methods: A total of 73 mRCC patients treated with nivolumab were retrospectively reviewed. We evaluated the serum CRP levels before and after molecular-targeted treatments. Patients whose CRP did not exceed baseline value were defined as the CRP-control group and the others were defined as the CRP-progression group. The clinical impact of CRP-control on the efficacy of nivolumab was assessed. Results: Twenty-four patients (33%) were categorized into the CRP-control group. The CRP-control group patients (median PFS not reached) had significantly longer PFS than the CRP-progression group (median PFS 11.9 months, 95% confidence interval, CI 4.1–19.8, p = 0.038). The CRP-control group had a tendency of longer OS from nivolumab initiation than the CRP-progression group (p = 0.071). By multivariate analysis, the on-treatment CRP-control was the independent predictive factor for PFS (hazard ratio HR 0.37, 95% CI 0.14–0.99, p = 0.047). Conclusion: The on-treatment CRP-control could be the predictive factor for the efficacy of nivolumab in refractory mRCC patients.

Original languageEnglish
Pages (from-to)1500-1505
Number of pages6
JournalInternational Journal of Clinical Oncology
Volume26
Issue number8
DOIs
Publication statusPublished - 2021 Aug

Keywords

  • Biomarker
  • C-reactive protein
  • Metastasis
  • Nivolumab
  • Renal cell carcinoma

ASJC Scopus subject areas

  • Surgery
  • Hematology
  • Oncology

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