Esophageal Sparing Intensity-modulated Radiation Therapy (IMRT) for Locally-Advanced Thoracic Malignancies (ESIMRT)
Hypothesis 1- Using IMRT, the radiation therapy (RT) dose can be safely escalated from 58 Gy to 74 Gy given as 6 fractions/week with concurrent chemotherapy.
Hypothesis 2- Esophageal motion can be used to customize planning organ at risk volumes.
Hypothesis 3- Biological predictors of acute esophagitis can be used to identify patients at high risk of developing esophageal toxicity from radiation therapy and chemotherapy.
|Non Small Cell Lung Cancer Small Cell Lung Cancer Thymoma Thymus Neoplasms||Radiation: Esophageal sparing IMRT||Phase 1|
|Study Design:||Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
|Official Title:||Phase I Dose Escalation Study of Accelerated Fractionation With Esophageal Sparing Using Intensity-Modulated Radiation Therapy for Locally-Advanced Thoracic Malignancies Including a Prospective Assessment of Esophageal Motion and Radiation-Induced Esophageal Injury|
- Maximum tolerated dose (MTD) of IMRT [ Time Frame: within 30 days of completing RT ]
- The occurrence of RT-induced acute esophagitis [ Time Frame: One year ]
- To determine if biological predictors of esophagitis can identify patients who develop severe esophageal toxicity during radiation therapy [ Time Frame: Two years ]Blood will be drawn at specific time intervals, plasma will be analysed for Glutathione Oxidation, Citrulline, Lipid peroxidation, DNA oxidation, and Tetrahydrobiopterin.
|Study Start Date:||August 2009|
|Estimated Study Completion Date:||June 2019|
|Primary Completion Date:||December 2014 (Final data collection date for primary outcome measure)|
Experimental: IMRT concurrent with chemotherapy
6 fractions of esophageal sparing IMRT weekly for 5-6 weeks (dependent on dose cohort) concurrent with standard chemotherapy: Cisplatin 50 mg/m2 /d intravenously (IV) on days 1, 8, 29, and 36. Etoposide 50 mg/m2 /d IV on days 1 through 5 and 29 through 33.
Radiation: Esophageal sparing IMRT
6 fractions/week of 2Gy each for 29 fx (58 Gy), 31 fx (62 Gy), 33 fx (66 Gy), 35 fx (70 Gy), or 37 fx (74 Gy).
Please refer to this study by its ClinicalTrials.gov identifier: NCT00921739
|United States, North Carolina|
|Duke University Medical Center|
|Durham, North Carolina, United States, 27710|
|Principal Investigator:||Christopher Kelsey, MD||Duke University Medical Center, Dept Radiation Oncology|