Abstract
The blood neutrophil-to-lymphocyte ratio (NLR) is reported to be a prognostic marker in several cancers. However, the prognostic role of NLR in patients with advanced cholangiocarcinoma on chemotherapy is unknown. A total of 221 patients with pathologically confirmed locally advanced or metastatic cholangiocarcinoma receiving first-line palliative chemotherapy were enrolled. Associations between baseline clinical and laboratory variables including NLR and survival were investigated. Patients were classified into two groups according to the NLR level (≤5 vs. >5). Median overall survival (OS) and time to progression (TTP) in patients with NLR ≤ 5 were 10.9 and 6.7 months, respectively, and 6.8 and 4.1 months in patients with NLR > 5 (P < 0.001, P = 0.002, respectively). In multivariate analysis, number of cycles of chemotherapy was a significant predictor of longer OS (HR 0.86, P < 0.001), whereas adverse prognostic factors for OS were CA 19-9 > 300 (HR 1.43, P = 0.025), CEA > 5 (HR 1.44, P = 0.029), higher stage (HR 1.69, P = 0.004), and NLR > 5 (HR 1.87, P < 0.001). NLR > 5 was also associated with reduced TTP (HR 1.66, P = 0.007). Among 50 patients with initial NLR > 5, 33 patients had NLR ≤ 5 after two cycles of chemotherapy and they had significantly better survival than the others (HR 0.48, P = 0.015). NLR independently predicts survival in patients with advanced cholangiocarcinoma undergoing chemotherapy. Considering cost-effectiveness and easy availability, NLR may be a useful biomarker for prognosis prediction.
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Abbreviations
- CA 19-9:
-
Carbohydrate antigen 19-9
- CCA:
-
Cholangiocarcinoma
- CEA:
-
Carcinoembryonic antigen
- CI:
-
Confidence interval
- CR:
-
Complete response
- CRP:
-
C-reactive protein
- dNLR:
-
Derived neutrophil–lymphocyte ratio
- ECOG:
-
Eastern Cooperative Oncology Group
- HR:
-
Hazard ratio
- NLR:
-
Neutrophil–lymphocyte ratio
- NSAIDs:
-
Nonsteroidal anti-inflammatory drugs
- OS:
-
Overall survival
- PD:
-
Progressive disease
- PFS:
-
Progression-free survival
- PR:
-
Partial response
- SD:
-
Stable disease
- TTP:
-
Time to progression
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Author contributions
Sang Hyub Lee involved in conception and design; Ban Seok Lee, Dong Kee Jang, Kwang Hyun Chung, Jun Hyuk Son collected and assembled of data; Sang Hyub Lee, Ji Kon Ryu, Yong-Tae Kim provided study materials or patients; Ban Seok Lee, Woo Hyun Paik involved in data analysis and interpretation; Ban Seok Lee, Sang Hyub Lee, Woo Hyun Paik wrote the manuscript; All authors finally approved the manuscript.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. For this type of study, formal consent is not required.
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Lee, B.S., Lee, S.H., Son, J.H. et al. Neutrophil–lymphocyte ratio predicts survival in patients with advanced cholangiocarcinoma on chemotherapy. Cancer Immunol Immunother 65, 141–150 (2016). https://doi.org/10.1007/s00262-015-1780-7
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DOI: https://doi.org/10.1007/s00262-015-1780-7