Phase I/II Therapy Trial to Determine the Safety and Efficacy of Heavy Ion Radiotherapy in Patients With Osteosarcoma
试验速览
- 阶段
- 1 期
- 状态
- 已完成
- 入组人数
- 23
- 试验地点
- 2
- 主要终点
- feasibility, toxicity (tox) measured by the CTC Criteria .Unacceptable:grade 4 tox. A rate of acute tox (≤ 3 months during/after RT) > grade 3 of ≤ 5% and a rate of late tox > grade 3 of ≤ 3% will be acceptable.
研究概览
简要总结
The primary objectives of this trial are the determination of feasibility and toxicity of Heavy Ion Radiotherapy (C12) in patients with non-resectable osteosarcoma. Secondary endpoints are tumor response, disease free survival and overall survival. The aim is to improve outcome for patients with non-resectable osteosarcoma.
详细描述
Osteosarcoma is the most common primary malignant bone tumor in children and adolescents. For effective treatment, local control of the tumor is absolutely critical, because the chances of long term survival are <10% and might effectively approach zero if a complete surgical resection of the tumor is not possible. Up to date there is no curative treatment protocol for patients with non-resectable osteosarcomas, who are excluded from current osteosarcoma trials , e.g. EURAMOS1. Local photon radiotherapy has previously been used in small series and in an uncontrolled, highly individualized fashion, which, however, documented that high dose radiotherapy can, in principle, be used to achieve local control. Generally the radiation dose that is necessary for a curative approach can hardly be achieved with conventional photon radiotherapy in patients with non-resectable tumors that are usually located near radiosensitive critical organs such as the brain, the spine or the pelvis. In these cases Heavy Ion Radiotherapy (HIT) may offer a promising new alternative. Moreover, compared with photons, heavy ion particles provide a higher physical selectivity because of their finite depth coverage in tissue. They achieve a higher relative biological effectiveness. Phase I/II dose escalation studies of HIT in adults with non-resectable bone and soft tissue sarcomas have already shown favorable results.
Methods/Design: This is a monocenter, non-randomized study for patients older than 6 years of age with non-resectable osteosarcoma. Desired target dose is 60-66 Cobalt Gray Equivalent (GyE). Weekly fractionation of 6 x 3 Gy E is used. HIT will be administered exclusively at the Ion Radiotherapy Center in Heidelberg. Furthermore, FDG-PET imaging characteristics of non-resectable osteosarcoma before and after HIT will be investigated prospectively. Systemic disease before and after HIT is targeted by standard chemotherapy protocols and is not part of this trial.
The primary objectives of this trial are the determination of feasibility and toxicity of HIT. Secondary endpoints are tumor response, disease free survival and overall survival. The aim is to improve outcome for patients with non-resectable osteosarcoma.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 6 Years 至 —（Child, Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Histological diagnosis of high grade osteosarcoma with or without metastases
- •Non-resectable tumor of the pelvis, the skull base or the spine, respectively, incomplete or intralesional tumor resection - as confirmed after evaluation by two orthopedic surgeons (respectively neurosurgeons in case of spine tumors): one local surgeon and one referee surgeon of the University of Heidelberg.
- •Age older than 6 years before start of radiotherapy
- •Adequate performance status (Karnofsky >60%)
- •Adequate blood cell production before the start of HIT in patients with pelvic or spine tumors as defined by: total white cell count (WBC) >1,0/nl; neutrophils > 200/µl; platelet count >20/nl
- •No febrile neutropenia (neutrophils < 200/µl)
- •Written informed consent of the patient or the legal guardians
- •Non-resectable tumor site means primary tumors affecting anatomic areas of the human body where a surgical total resection (R0) of the tumor is not possible for technical reasons, for example osteosarcoma of the pelvis, spine or the skull base. In any other cases, surgical resection is recommended.
- •Non-resectability has to be confirmed after evaluation by two orthopedic surgeons (respectively neurosurgeons in case of spine tumors): one local surgeon and one referee surgeon of the University of Heidelberg.
- •In some cases surgery of the tumor might be possible after HIT. Then we recommend surgical resection of residual tumor afterwards.
排除标准
- •Age younger than 6 years
- •Previous radiotherapy of the field that has to be radiated now
- •Implanted metal within the planned radiation field, that leads to significant artefacts within the target volume
- •Patients receiving any other investigational agents during the time of HIT
- •Performance status (Karnofsky) < 60%)
- •Pregnancy
- •No written informed consent of patient or the legal guardians
结局指标
主要结局
feasibility, toxicity (tox) measured by the CTC Criteria .Unacceptable:grade 4 tox. A rate of acute tox (≤ 3 months during/after RT) > grade 3 of ≤ 5% and a rate of late tox > grade 3 of ≤ 3% will be acceptable.
时间窗: before, weekly during RT and at follow-up (1, 6 and 19 weeks, 6, 12, 24, 36 48 and 60 months after RT).
次要结局
- tumor response (RECIST criteria), disease free survival, overall survival and description of FDG-PET characteristics before and after RT.(6, 12, 24, 36 48 and 60 months after RT)
研究者
Juergen Debus
Prof. Dr. Dr. Jürgen Debus
Heidelberg University