Plasma Metabolites and Risk of Radiation-induced Esophagitis: A Secondary Analysis from a Prospective Study.

Journal Article (Journal Article)

AIM: Metabolic profiling was performed on plasma samples obtained prior to and during radiation therapy (RT) for locally advanced lung cancer to identify metabolites predictive of RT-induced esophagitis. PATIENTS AND METHODS: Patients received cisplatin/etoposide with RT as part of a prospective dose-escalation study (n=24). Plasma samples were collected at baseline, weeks 2 and 5 during RT, and 6 weeks post-RT. Metabolites were measured by ultrahigh-performance liquid chromatography-tandem mass spectroscopy at each time-point. Metabolite concentrations were compared between patients developing grade 0-1 and those with grade 2 or more esophagitis. RESULTS: At baseline, 23 metabolites differed significantly (p<0.05) between patients with grade 0-1 esophagitis and those with grade 2 or esophagitis. Sixty-seven metabolites were different at week 2. None reached statistical significance (q<0.05) after corrections for multiple comparisons. On random forest modeling, the predictive accuracy of the metabolite data was 33% at baseline and 50% at 2 weeks. CONCLUSION: No individual metabolite or group of metabolites was predictive of acute RT-induced esophagitis.

Full Text

Duke Authors

Cited Authors

  • Tandberg, DJ; Holt, T; Kelsey, CR

Published Date

  • February 2017

Published In

Volume / Issue

  • 37 / 2

Start / End Page

  • 719 - 725

PubMed ID

  • 28179322

Electronic International Standard Serial Number (EISSN)

  • 1791-7530

Digital Object Identifier (DOI)

  • 10.21873/anticanres.11369


  • eng

Conference Location

  • Greece