Carbon Ion Radiotherapy for Atypical Meningiomas (NCT01166321) | Clinical Trial Compass
UnknownNot Applicable
Carbon Ion Radiotherapy for Atypical Meningiomas
Germany35 participantsStarted 2012-06
Plain-language summary
Treatment standard for patients with atypical or anaplastic meningioma is neurosurgical resection. With this approach, local control ranges between 50 and 70%, depending on resection status. A series or smaller studies has shown that postoperative radiotherapy in this patient population can increase progression-free survival, which translates into increased overall survival. However, meningiomas are known to be radioresistant tumors, and radiation doses of 60 Gy or higher have been shown to be necessary for tumor control.
Carbon ions offer physical and biological characteristics. Due to their inverted dose profile and the high local dose deposition within the Bragg peak precise dose application and sparing of normal tissue is possible. Moreover, in comparison to photons, carbon ions offer an increased relative biological effectiveness (RBE), which can be calculated between 2 and 5 depending on the cell line as well as the endpoint analyzed.
First data obtained within the Phase I/II trial performed at GSI in Darmstadt on carbon ion radiotherapy for patients with high-risk meningiomas has shown safety, and treatment results are promising.
Therefore, in the current Phase II-MARCIE-Study a carbon ion boost will be applied to the macroscopic tumor (gross tumor volume, GTV) in conjunction with photon radiotherapy to the clinical target volume (CTV) in patients with atypical meningiomas after incomplete resection or biopsy.
Primary endpoint is progression-free survival rate, secondary endpoints are overall survival, safety and toxicity.
Who can participate
Age range
18 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* histologically confirmed atypical meningioma
* macroscopic tumor after biopsy or subtotal resection
* Simpson Grade 4 or 5
* prior photon radiotherapy to the clinical target volume (CTV) of 48-52 Gy
* beginning of study treatment no later than 12 weeks after surgery
* age ≥ 18 years of age
* Karnofsky Performance Score ≥ 60
* For women with childbearing potential, adequate contraception
* Ability of subject to understand character and individual consequences of the clinical trial
* Written informed consent (must be available before enrolment in the trial)
Exclusion Criteria:
* refusal of the patients to take part in the study
* previous radiotherapy of the brain
* optic nerve sheath meningioma (ONSM)
* time interval of \> 12 weeks after primary diagnosis (neurosurgical intervention) and beginning of study treatment
* Patients who have not yet recovered from acute toxicities of prior therapies
* Known carcinoma \< 5 years ago (excluding Carcinoma in situ of the cervix, basal cell carcinoma, squamous cell carcinoma of the skin) requiring immediate treatment interfering with study therapy
* Pregnant or lactating women
* Participation in another clinical study or observation period of competing trials, respectively
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.