In:
Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 38, No. 4_suppl ( 2020-02-01), p. 224-224
Abstract:
224 Background: The combination regimen of TAS-102 and bevacizumab as salvage-line therapy for metastatic colorectal cancer (mCRC) was established based on its high clinical effectiveness (C-TASK FORCE). Recently, our current phase II TAS-CC3 study demonstrated comparable median progression-free survival (PFS: 4.5m) and overall survival (OS: 9.2m) with exclusive inclusion of 3 rd line therapy patients. However, practical predictors for its efficacy are lacking. This study evaluated inflammation-based scores as potential predictors for this combination therapy. Methods: This is a post hoc analysis of investigator-initiated, open-label, single-arm, multicentered phase II study (TAS-CC3) in Japan with 32 mCRC patients treated with the combination therapy. We investigated the predictive and prognostic values of pretreatment blood inflammation-based scores, including neutrophil-to-lymphocyte (NLR), platelet-to-lymphocyte (PLR), and lymphocyte-monocyte ratios (LMR), on disease-control (DC), PFS and OS. These were divided into two groups (high and low) using cut-off of each median values. This study was registered at the University Hospital Medical Information Network, as UMIN#000022438. Results: ROC curve analyses of 3 inflammation-based scores versus DC showed a best predictive performance in LMR, followed by NLR and PLR (AUC: 0.89, 0.85, and 0.68, respectively). The high LMR group had a significantly higher DC rate than the low group (87.5 vs. 43.8%, P= 0.023). Two patients showing partial responses were in the high group. The high LMR group showed significantly longer survivals compared with the low group (4.9 vs. 2.3m, respectively for median PFS, P= 0.014) (20.5 vs. 5.1m, respectively for median OS, P 〈 0.001). The values of LMR were significantly correlated with PFS and OS (r = 0.56: P 〈 0.001 and 0.62: P 〈 0.001, respectively). Conclusions: Pretreatment LMR is a valid predictive and prognostic biomarker for mCRC patients with TAS-102 and bevacizumab treatment and might be clinically useful for selecting patients of the responder. Clinical trial information: 000022438.
Type of Medium:
Online Resource
ISSN:
0732-183X
,
1527-7755
DOI:
10.1200/JCO.2020.38.4_suppl.224
Language:
English
Publisher:
American Society of Clinical Oncology (ASCO)
Publication Date:
2020
detail.hit.zdb_id:
2005181-5
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