RT Journal Article SR Electronic T1 Metabolomics-based Discovery of Serum Biomarkers to Predict the Side-effects of Neoadjuvant Chemoradiotherapy for Esophageal Squamous Cell Carcinoma JF Anticancer Research JO Anticancer Res FD International Institute of Anticancer Research SP 519 OP 526 DO 10.21873/anticanres.13143 VO 39 IS 1 A1 SHIN NISHIUMI A1 SEIJI FUJIGAKI A1 TAKASHI KOBAYASHI A1 TAKASHI KOJIMA A1 YOSHINORI ITO A1 HIROYUKI DAIKO A1 KEN KATO A1 HIROKAZU SHOJI A1 YUZO KODAMA A1 KAZUFUMI HONDA A1 MASARU YOSHIDA YR 2019 UL http://ar.iiarjournals.org/content/39/1/519.abstract AB Background/Aim: Neoadjuvant chemoradiotherapy has side-effects that adversely affect patients' quality of life. The aim of this study was to identify serum metabolite biomarkers that might be used to predict the side-effects of neoadjuvant chemoradiotherapy for esophageal squamous cell carcinoma (ESCC). Patients and Methods: Metabolomic analysis of serum samples from 26 patients with ESCC that were collected before neoadjuvant chemoradiotherapy was performed. The metabolites associated with hematological toxicity or nephrotoxicity were evaluated. Results: Serum levels of glutaric acid, glucuronic acid, and cystine were significantly higher in hematological toxicity, and phosphatidylcholines and phosphatidylethanolamines exhibited a tendency to be higher in those with hematological toxicity. The serum level of pyruvic acid was significantly lower in nephrotoxicity, and lysophosphatidylcholines and lysophosphatidylethanolamines tended to be lower in those with nephrotoxicity. Conclusion: Our study found that serum levels of some metabolites differed significantly between patients with and without hematological or renal side-effects. These metabolites may be useful biomarkers for predicting hematological toxicity or nephrotoxicity after neoadjuvant chemoradiotherapy for ESCC.