Abstract:
BACKGROUND:The immune system plays an important role in cancer pathogenesis. A low lymphocyte-to-monocyte ratio (LMR), as a simple biomarker of host immune system, has been suggested to be related to poor prognosis in various cancers. We performed a systematic review and meta-analysis to quantify the prognostic value of LMR on clinical outcomes in non-hematologic solid tumors. PATIENTS AND METHODS:We searched PubMed and the ASCO online database of meeting abstracts up to July 2015 for relevant studies. We included studies assessing the prognostic impact of pre-treatment LMR on clinical outcomes in patients with non-hematologic solid tumors. The primary outcome was overall survival (OS) and the secondary outcomes were cancer-specific survival (CSS) and disease-free survival (DFS). The summary hazard ratio (HR) and 95% confidence interval (CI) were calculated. RESULTS:A total of 11,197 patients from 29 studies were included. LMR lower than the cut-off was associated with poor OS (HR, 1.73; 95% CI, 1.55-1.93; P<0.001), CCS (HR, 1.56; 95% CI, 1.27-1.91; P<0.001) and DFS (HR, 1.56; 95% CI, 1.31-1.86; P<0.001). The effect of LMR on OS was observed in among various tumor types and across disease stages. The median cut-off value for LMR was 3.0 (range=2.0-5.3). Subgroup analysis according to cut-off value (<3.0, 3.0 to <4.0, 4.0 to <5.0, and ≧5.0) showed a significant prognostic value of LMR on OS in all subgroups. CONCLUSIONS:A low pre-treatment LMR seems to represent an unfavorable and robust prognostic factor for clinical outcomes in patients with non-hematologic malignancies. FUNDING:None.
journal_name
Cancer Treat Revjournal_title
Cancer treatment reviewsauthors
Nishijima TF,Muss HB,Shachar SS,Tamura K,Takamatsu Ydoi
10.1016/j.ctrv.2015.10.003subject
Has Abstractpub_date
2015-12-01 00:00:00pages
971-8issue
10eissn
0305-7372issn
1532-1967pii
S0305-7372(15)00174-7journal_volume
41pub_type
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