The purpose of this study is to evaluate the effects on neurocognitive function of whole-brain radiotherapy (WBRT) with/without TMZ concurrent chemotherapy or avoidance of hippocampus for patients of brain metastases, as well as the feasibility and risk of avoidance of hippocampus during whole-brain radiotherapy.
This is a phase II randomized clinical trial. It is reported that avoidance of hippocampus during whole-brain radiotherapy (WBRT) had benefits in preservation of memory for patients, and the use of concurrent TMZ in radiotherapy for patients with brain metastases benefited for treating outcome. The purpose of this study is to evaluate the effects on neurocognitive function of whole-brain radiotherapy with/without TMZ concurrent chemotherapy or avoidance of hippocampus for patients of brain metastases, as well as the feasibility and risk of avoidance of hippocampus during whole-brain radiotherapy.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
256
TMZ 75mg/m2/d from the 1st day to the last day of radiotherapy
Whole brain radiotherapy of 30Gy/10f by IMRT (Intensity Modulation Radiated Therapy), with or without boost. The maximum dose of hippocampus should be no more than 18Gy.
Whole brain radiotherapy of 30Gy/10f by IMRT, with or without boost. The dose of hippocampus is not considered.
Department of Radiation Oncology, Sun Yat-Sen University Cancer Center
Guangzhou, Guangdong, China
Guangdong Three Nine Brain Hospital
Guangzhou, Guangdong, China
Guangzhou First People's Hospital
Guangzhou, Guangdong, China
Change of neurocognitive function between baseline and 4 months after radiotherapy
Neurocognitive function is evaluated by Minimum Mental State Examination (MMSE)
Time frame: baseline; four months after radiotherapy
Effect on response rate
Response is evaluated on basis of RECIST
Time frame: baseline; One, two, four, six, and twelve months after radiotherapy
The tolerance of radiotherapy with TMZ concurrent chemotherapy
Adverse effects are evaluated by CTCAE 4.0 criteria
Time frame: baseline; once a week through during radiotherapy, up to 3 weeks
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The Fifth Affiliated Hospital, Sun Yat-Sen University
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