Esophageal Cancer Clinical Trial
Official title:
A Phase II Clinical Trial on VEGF Expression Interfered by Thalidomide Combined With Concurrent Chemoradiotherapy in Esophageal Cancer
The purpose of this study is to down-regulate VEGF expression in esophageal cancer patients by thalidomide, so to improve their chemoradiotherapy effect. Patients with esophageal cancer receiving chemoradiotherapy were divided into different sub-group according to dynamic change of their VEGF level,and those showed increased or unchanged VEGF were added thalidomide at random. Efficacy and side effect of thalidomide combined with chemoradiotherapy were evaluated, and at the same time, activity of thalidomide on esophageal cancer and its clinical safely were assessed.
Radiotherapy:Patients will be conducted CT simulation, and three-dimensional conformal
radiation therapy (3DCRT) was performed. 1.8-2.0 Gy/fraction, 5 fractions a week, with a
total dose of 60-72Gy will be delivered for all patients by 6-MV-X-ray of linear
accelerator.
Chemotherapy: Patients will be concurrently administered with irradiation every 4 weeks with
PT regimen (cis-platinum of 25 mg/m2/d, d1-4; PTX(paclitaxel)of 135mg/m2/d, d1) for 4
cycles. For the first 2-cycles of chemotherapy they will be concurrently given with
irradiation and the remained 2 cycles, after irradiation.
Administration of thalidomide: Determine serum VEGF level of the esophageal cancer patients
3-4 weeks after the beginning of radiotherapy, those whose VEGF level, compared with that
before radiotherapy, increased or unchanged will be divided into two groups: one is given
thalidomide concurrent with the following chemoradiotherapy, 100mg/d at bedtime for the
initial week, and if no moderate above side effect occurred 200mg/d from the next week till
the end of chemoradiotherapy; the other received concurrent chemoradiotherapy only.
VEGF determination: Peripheral venous blood samples will be taken in one week before, 3-4
weeks during, and in one week after radiotherapy respectively. The serum VEGF will be
determined by the double antibody sandwich ELISA.
;
Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Investigator), Primary Purpose: Treatment
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