In:
Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 36, No. 4_suppl ( 2018-02-01), p. 694-694
Abstract:
694 Background: Intestinal neuroendocrine tumors (NETs) can often be indolent, with survival commonly exceeding 10 years. However, a subset can be more aggressive. The search for a prognostic test based on preoperative lab results would be of benefit. An elevated NLR has been found to be predictive of diminished overall survival (OS) in several cancers, and we hypothesized that this same trend would hold true for intestinal NETs. Methods: Utilizing the 8 member institutions of the retrospective U.S. NET Study Group, patients undergoing resection of intestinal NETs were included. After excluding patients undergoing emergent surgery, those with preoperative sepsis or distant mets, and those with missing neutrophil/lymphocyte lab values, 281 patients were included for analysis. The cutoff values for NLR were determined using receiver operator curve (ROC) analysis. Univariate analysis was performed based on these groups. A Kaplan-Meier survival curve was created based off optimal NLR from ROC analysis. OS was calculated as date of surgery to date of death/ last follow-up. SPSS 23.0 was used for analysis. Results: Of the 281 patients identified, 9% were appendiceal, 9% colonic, 21% duodenal, 5% rectal, and 56% jejunal/ileal. Using a NLR of 〉 2.47, the ROC area under the curve was 0.609 ( p=0.002). Median survival for the 130 patients in the 〈 2.47 group was 159.8 months, versus 115.63 months in the ≥2.47 group (p =0.009). When comparing the NLR 〈 2.47 and ≥2.47 groups, mean age (57.5 vs. 59.0 years, respectively, p=0.642), ASA status (89% ASA 2 /3 in both groups, p=0.314), tumor Ki-67 status (Ki-67 〉 3% in 30% vs. 26%, respectively, p=0.57), and post-op complications (36 vs. 42%, respectively, p=0.310) were similar between groups. A significantly greater number of patients in the NLR high group had positive lymph nodes (60 vs. 47%, p =0.002). Conclusions: For patients undergoing curative resection of intestinal NETs with no distant mets, a preoperative NLR of ≥2.47 was significantly predictive of decreased OS, with those in the elevated NLR group having an OS 3.7 years less than those in the 〈 2.47 group. Future prospective data is warranted to further validate these findings.
Type of Medium:
Online Resource
ISSN:
0732-183X
,
1527-7755
DOI:
10.1200/JCO.2018.36.4_suppl.694
Language:
English
Publisher:
American Society of Clinical Oncology (ASCO)
Publication Date:
2018
detail.hit.zdb_id:
2005181-5
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