Brain Tumors Clinical Trial
Official title:
Comparison of Proton and Photon Radiotherapy of Brain Tumors: Efficiency and Side Effects in Clinical Standard Doses
This protocol compares the toxicity of radiotherapy or radiochemotherapy applied with different radiation modalities - protons or photons. Patients with different kinds of brain tumours and foreseen high-dose radiotherapy can be included. The hypothesis of the trial is that the rate of chronic toxicity 1 year after the end of radiotherapy is 15% lower after proton compared to photon treatment.
Non-randomised 2-arm phase II trial on comparison of proton versus photon radiotherapy in brain tumours using standard doses and standard combined chemotherapy protocols. Patients are assigned to the treatment groups by their own choice or availability of the treatment. Patients are stratified into 4 groups, (1) supratentorial grad III/ IV tumours without pre-irradiation; (2) supratentorial grade I/II tumours without pre-irradiation; (3) infratentorial tumours without pre-irradiation; (4) patients with pre-irradiation >40 Gy in the tumour area. Radiotherapy doses of 54-60 Gy(RBE) are applied in group 1-3 using normal fractionated schedules. In group 4, 30 Gy(RBE)/ 5 Gy(RBE) per fraction or 36 Gy(RBE) with 2 Gy(RBE) per fraction are allowed. Primary endpoint is chronic toxicity and quality of life. The hypothesis of the trial is that the rate of chronic toxicity 1 year after the end of radiotherapy is 15% lower after proton compared to photon treatment. Events for chronic toxicity are toxicities observed later than 3 months after end of radiotherapy and scored CTC-AE4.0 >grade 2 or a decrease in Quality of life by >10% (EORTC-QLQ C30 and BN20) or a decrease in neuropsychological functioning by >10% (MoCa test). All statistical calculations apply to group (1), i.e. supratentorial grade II/IV tumours without pre-irradiation, all other arms are closed when group (1) is closed. ;
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