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• W2891810046 abstract "e22504 Background: Ewing sarcoma family tumor (ESFT) is a systemic disease and inflammatory in nature. Inflammatory biomarkers have been identified as prognostic marker in various malignancies including sarcoma. Here we have evaluated the prognostic implication of pretreatment neutrophil to lymphocyte ratio (NLR) in ESFT. Methods: We have calculated baseline NLR from peripheral blood parameters in 570 patients of ESFT treated with uniform chemotherapy protocol in our institution from June’2003 to Feb’2015. Treatment protocol consists of neoadjuvant chemotherapy followed by surgery and/or radiotherapy as local treatment modality and adjuvant chemotherapy. NLR was dichotomized as high and low with high NLR defined as value over the median. Data was censored on 30 th Jan’2016. Results: Median age was 15 years (range: 0.1-55) with male: female ratio of 40:17 and 41% (n = 236) patients had metastasis at presentation. Most common sites of tumor were long bones in 209 (37%), thorax in 108 (19%) and pelvis in 90 (16%) patients. Hundred-one (18%) had a soft tissue primary. Twenty-five percent (n = 144) patients had systemic symptoms at presentation. Median symptom duration was 4 months (range: 0.5-36) with median tumor size 8.8 cm (range: 1.6-26). Median NLR was 1.55 (range: 0.08-12.87). High NLR was associated with older age (p = 0.002), female sex (p = 0.02), low serum albumin (p = 0.003) and high lactate dehydrogenase level (p = 0.03). After median follow-up of 32 months (range: 0.8-152), 5-year event-free survival (EFS) was 25.3% & 35.8% and overall survival (OS) was 38% & 48.7%, respectively in whole cohort and in those with localized disease. In the whole cohort, high NLR ( > 1.55) emerged as independent prognostic factor predicting inferior EFS (Hazard ratio-1.36, p = 0.03) along with metastasis at presentation (p < 0.001) and tumor diameter > 8 cm (p = 0.005), in multivariate analysis. NLR couldn’t predict OS. Conclusions: High pretreatment NLR emerged as independent prognostic factor predicting inferior EFS in patients with ESFT. It is an easily available and cost effective biomarker. Prognostic nature of NLR should be evaluated in a prospective study and if proven, should be included in prognostic model to tailor therapy." @default.
• W2891810046 created "2018-09-27" @default.
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• W2891810046 date "2017-05-20" @default.
• W2891810046 modified "2023-09-25" @default.
• W2891810046 title "Pretreatment neutrophilto lynphocyte ratio in ewing sarcoma family of tumors: An analysis of 570 patients." @default.
• W2891810046 doi "https://doi.org/10.1200/jco.2017.35.15_suppl.e22504" @default.
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