Stereotactic Body Radiotherapy for Osseous Low Alpha-Beta Resistant Metastases for Pain Relief
试验速览
- 阶段
- 不适用
- 入组人数
- 40
- 试验地点
- 2
- 主要终点
- Overall Pain Response
研究概览
简要总结
Radiation therapy has been shown to be very effective at relieving pain caused by bone metastases. However, certain types of cancers such as prostate, breast, kidney, and melanoma can have resistance to radiation, making treatment less successful. Stereotactic body radiotherapy (SBRT) is a newer form of focused treatment that gives higher doses of radiation without damage to surrounding organs. It often is used to help control and cure disease, but less commonly as a way to palliate and treat symptoms. This study is looking at using SBRT for the purposes of improving pain caused by bone metastases in prostate cancer, breast cancer, kidney cancer, and melanoma patients. It is theorized that the higher levels of radiation may be able to combat the resistance some tumour cells have to radiotherapy and provide improved pain response to treatment. The investigators are looking to show that SBRT has a role in helping this group of patients deal with painful bone lesions from their cancer without increasing side effects and toxicity from the radiation treatment.
详细描述
Stereotactic body radiotherapy (SBRT) has shown promising early results in the management of bone metastases. However, there is a paucity of prospective data studying the use of SBRT for bone metastases originating from low alpha-beta tumors, with systematic reporting of changes in pain scores and analgesia use over time. The vast majority data looking at SBRT in bone lesions focuses on local control and survival, rather than more tangible outcomes in a palliative population including symptomatic control, durability of response, and patient reported quality of life; a component that is understudied in this group despite its tremendous value. Furthermore, SBRT for bone metastases has yet to become common practice given the limited evidence for its efficacy and uncertainty in regards to toxicity.
The current study proposes an investigation of the potential benefits of SBRT for symptomatic bone metastases in patients with prostate cancer, breast cancer, renal cell carcinoma, melanoma, and sarcoma. The investigators look to conduct a prospective cohort study that is adequately powered to analyse efficacy in alleviating pain from bone lesions and compare this to well-established rates in literature for conventionally fractionated palliative RT. Furthermore, this study will assess the tolerability of this modality, toxicity rates, and effect on quality of life. If the results show that SBRT has a significant benefit on this population, the goal would be to pursue a larger randomized trial to confirm the findings.
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
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Diagnosis of prostate cancer, renal cell carcinoma, or melanoma
- •Radiographic evidence of bone metastases requiring treatment for pain
- •Brief Pain Inventory score of ≥ 2
排除标准
- •Spinal lesions
- •Severe or progressive neurological deficit
- •Impending or existing pathological fracture
- •Bone metastasis in a previously irradiated site
- •Active systemic therapy
- •>5 lesions requiring treatment
- •Lesions >5 cm in largest diameter
- •Life expectancy < 3 months
- •Age < 18
- •Karnofsky Performance Status < 50
- •Unable to provide informed consent
结局指标
主要结局
Overall Pain Response
时间窗: 3 months after treatment
Assessed using the Brief Pain Inventory
次要结局
- Overall Pain Response(6 months after treatment)
- Acute Toxicity(3 months or less)
- Rate of Reirradiation/Salvage Surgery(up to 1 year)
- Late Toxicity(greater than 3 months)
- Patient-reported Quality of Life(1 month, 3 months, and 6 months)
- Local Control(up to 1 year)