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Spots Global Cancer Trial Database for Kypho-IORT: Intraoperative Radiotherapy During Kyphoplasty for Spinal Metastases

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Trial Identification

Brief Title: Kypho-IORT: Intraoperative Radiotherapy During Kyphoplasty for Spinal Metastases

Official Title: Kypho-IORT: Phase II Study for Dose Escalation of Intraoperative Radiotherapy During Kyphoplasty for Spinal Metastases

Study ID: NCT01280032

Conditions

Tumors

Study Description

Brief Summary: Vertebral column is the most prevalent location of bone metastases. Besides axial pain, vertebral metastases cause pathological fracture and neurological dysfunction by spinal cord compression. Although the median overall survival of patients with bone metastases is only 7-9 month, half of them live longer and will require palliative treatment for their symptoms. Treatment options are radiotherapy and /or surgical treatment such as laminectomy, vertebroplasty or kyphoplasty. Various studies have shown the superiority of postoperative external beam radiotherapy after kyphoplasty in spinal metastases compared to surgery or radiotherapy alone. Nevertheless postoperative radiation schedules last 2-4 weeks. Moreover many patients present visceral and bone metastases simultaneously and require urgent systemic therapy. However, due to potentiated toxicity, concurrent therapy with full dose chemotherapy and radiotherapy is rarely possible. The investigators have therefore established a novel method for intraoperative radiotherapy (IORT) during kyphoplasty which enables immediate stability, sterilization of the metastasis and immediate initiation of chemotherapy. The kyphoplasty itself is performed according to the standard procedure with some minor modifications. In short under general anaesthesia, a bipedicular approach into the affected vertebra is chosen with insertion of specially designed metallic sleeves to guide the electron drift tube of the miniature X-ray generator (INTRABEAM®). To perform the IORT during a kyphoplasty with this device a new applicator was designed. This sterile applicator consists of a plastic head, which is needed to attach it to the X-ray source and a stainless steel tube. This tube protects the probe from bending. Under fluoroscopic guidance the applicator including the drift tube is guided through the metallic sleeves in the vertebral body. A dose of 8 Gy in 5 mm distance is delivered. After IORT the INTRABEAM system is removed. The kyphoplasty balloon is inflated and PMMA-cement is injected. Afterwards the sleeves are removed and the wound is closed as usual. Aim of this study is the definition of the maximum tolerable dose (MTD) for IORT during a kyphoplasty using specific MTD-criteria and evaluating the effectiveness of this combined treatment procedure. To determine the MTD 3 levels with increasing doses are planned: 8 Gy in 5 mm distance, 8 Gy in 8 mm distance and 8 Gy in 10 mm distance.

Detailed Description:

Eligibility

Minimum Age: 50 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: ALL

Healthy Volunteers: No

Locations

Department of Radiotherapy University Hospital Mannheim, Mannheim, , Germany

Contact Details

Useful links and downloads for this trial

Clinicaltrials.gov

Google Search Results

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