Published in:
01-08-2019 | Kidney Cancer | Original Research Article
Predictive Impact of Peripheral Blood Markers and C-Reactive Protein in Nivolumab Therapy for Metastatic Renal Cell Carcinoma
Authors:
Hiroki Ishihara, Hidekazu Tachibana, Toshio Takagi, Tsunenori Kondo, Hironori Fukuda, Kazuhiko Yoshida, Junpei Iizuka, Hirohito Kobayashi, Masayoshi Okumi, Hideki Ishida, Kazunari Tanabe
Published in:
Targeted Oncology
|
Issue 4/2019
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Abstract
Background
Predictive factors that can be routinely used in clinical practice are critically needed for immune checkpoint inhibitor therapy in metastatic renal cell carcinoma (mRCC).
Objective
To comprehensively analyze the predictive impact of peripheral blood markers and C-reactive protein (CRP) in nivolumab therapy for mRCC.
Methods
Fifty-eight patients were retrospectively evaluated. We evaluated neutrophil-to-lymphocyte ratio (NLR), monocyte-to-lymphocyte ratio (MLR), platelet-to-lymphocyte ratio (PLR), absolute eosinophil count (AEC), and absolute monocyte count (AMC) as peripheral blood markers as well as serum CRP levels. The primary endpoints were progression-free survival (PFS) and overall survival (OS) after nivolumab initiation.
Results
Median PFS was significantly shorter in patients with high NLR (≥ 3) versus low NLR (p = 0.0356), high MLR (≥ 0.3) versus low MLR (p = 0.0013), or high PLR (≥ 160) versus low PLR (p = 0.0073), and median OS was significantly shorter in patients with high NLR versus low NLR (p = 0.0025), high MLR versus low MLR (p = 0.0025), high PLR versus low PLR (p = 0.0256), or high CRP (≥ 1.0 mg/dl) versus low CRP (p = 0.0006). Multivariate analyses showed that MLR (HR 2.65, p = 0.0068) was an independent factor for PFS and that NLR (HR 3.34, p = 0.0218), MLR (HR 3.42, p = 0.0381), and CRP (HR 4.98, p = 0.0108) were independent factors for OS.
Conclusions
The systemic inflammatory factors NLR, MLR, and CRP were predictive factors in nivolumab therapy for mRCC. These easily monitored factors can contribute to effective treatment and follow-up.