Abstract
Introduction. The neutrophil-to-lymphocyte ratio (NLR), which can be easily calculated from routine complete blood counts of the peripheral blood, has been suggested to serve as a prognostic factor for some solid malignancies. In the present study, we aimed to determine the relationship between NLR in prostate cancer patients undergoing radical prostatectomy (RP) and their prognosis. Materials and Methods. We assessed NLR in 73 men (patients) who received RP for their prostate cancer. We also performed immunohistochemistry for CD8 and CD66b in a separate set of RP specimens. Results. The median NLR in the 73 patients was 1.85. There were no significant correlations of NLR with tumor grade (p = 0.834), pathological T stage (p = 0.082), lymph node metastasis (p = 0.062), or resection margin status (p = 0.772). Based on the area under the receiver operator characteristic curve (AUROC) to predict biochemical recurrence after RP, potential NLR cut-off point was determined to be 2.88 or 3.88. However, both of these cut-off points did not precisely predict the prognosis. There were no statistically significant differences in the number of CD66b-positive neutrophils or CD8-positive lymphocytes between stromal tissues adjacent to cancer glands and stromal tissues away from cancer glands and between different grades or stages of tumors. Conclusions. There was no association between NLR and biochemical failure after prostatectomy.
Highlights
The neutrophil-to-lymphocyte ratio (NLR), which can be calculated from routine complete blood counts of the peripheral blood, has been suggested to serve as a prognostic factor for some solid malignancies
We previously described the effectiveness of the NLR for predicting prostate cancer in men undergoing prostate biopsy by showing that the NLR was significantly higher in the prostate cancer group compared with the noncancer group [5]
There is increasing evidence correlating the presence of systemic inflammation with a poorer cancer-specific survival in patients with several solid tumors, such as colorectal carcinoma [8,9,10,11,12,13,14]
Summary
The neutrophil-to-lymphocyte ratio (NLR), which can be calculated from routine complete blood counts of the peripheral blood, has been suggested to serve as a prognostic factor for some solid malignancies. We aimed to determine the relationship between NLR in prostate cancer patients undergoing radical prostatectomy (RP) and their prognosis. We assessed NLR in 73 men (patients) who received RP for their prostate cancer. Based on the area under the receiver operator characteristic curve (AUROC) to predict biochemical recurrence after RP, potential NLR cut-off point was determined to be 2.88 or 3.88. Both of these cut-off points did not precisely predict the prognosis. We confirmed the usefulness of the NLR for predicting the prognosis
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