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Platelet count and platelet‐lymphocyte ratio as prognostic markers for head and neck squamous cell carcinoma: Meta‐analysis
Author(s) -
Takenaka Yukinori,
Oya Ryohei,
Kitamiura Takahiro,
Ashida Naoki,
Shimizu Kotaro,
Takemura Kazuya,
Yamamoto Yoshifumi,
Uno Atsuhiko
Publication year - 2018
Publication title -
head and neck
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.012
H-Index - 127
eISSN - 1097-0347
pISSN - 1043-3074
DOI - 10.1002/hed.25366
Subject(s) - medicine , thrombocytosis , platelet , hazard ratio , head and neck squamous cell carcinoma , confidence interval , gastroenterology , oncology , head and neck cancer , lymphocyte , proportional hazards model , cancer , cutoff , mean platelet volume , physics , quantum mechanics
Background Thrombocytosis is associated with the prognosis of various types of cancer. The purpose of this study was to quantify the prognostic impact of platelet count and platelet‐lymphocyte ratio (PLR) in head and neck squamous cell carcinoma (HNSCC). Methods We systematically searched electronic databases and identified articles reporting an association between platelet count or PLR and HNSCC prognosis. Hazard ratios (HRs) and 95% confidence intervals (CIs) for overall survival (OS) were extracted, and the pooled HRs were estimated using random effect models. Results Eight studies that enrolled 4096 patients and 9 studies that enrolled 2327 patients were included in the platelet count and PLR analyses, respectively. A platelet count greater than the cutoff value was associated with poor OS (HR 1.81; 95% CI 1.16‐2.82) and any PLR greater than the cutoff value was associated with poor OS (HR 1.64; 95% CI 1.13‐2.37). Conclusion Elevated platelet count and PLR are associated with poor prognosis in patients with HNSCC.