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Spots Global Cancer Trial Database for Focused Ultrasound Surgery in the Treatment of Pain Resulting From Metastatic Bone Tumors With the ExAblate 2100 Conformal Bone System

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Trial Identification

Brief Title: Focused Ultrasound Surgery in the Treatment of Pain Resulting From Metastatic Bone Tumors With the ExAblate 2100 Conformal Bone System

Official Title: Phase II Study to Evaluate the Safety and Effectiveness of ExAblate MR Guided Focused Ultrasound Surgery in the Treatment of Pain Resulting From Metastatic Bone Tumors With the ExAblate 2100 Conformal Bone System

Study ID: NCT01085565

Interventions

ExAblate 2100

Study Description

Brief Summary: The goal of this prospective, non-randomized, single-arm, phase 2 study is to evaluate the safety and effectiveness of this treatment using this ExAblate conformal system in the treatment of pain resulting from metastatic bone tumors Up to Fifty (50) patients will be recruited in this feasibility study. The treated patients will be followed for 3-Months post their last treatment, patients with the standard contraindications to MRI examination, such as implanted metal devices (pacemakers, etc.), will be excluded.

Detailed Description: Bone is the third most common organ involved by metastatic disease behind lung and liver \[6\]. In breast cancer, bone is the second most common site of metastatic spread, and 90% of patients dying of breast cancer have bone metastasis. Breast and prostate cancer metastasize to bone most frequently, which reflects the high incidence of both these tumors, as well as their prolonged clinical courses. Post-cancer survival has increased with improvement in early detection and treatments. As a consequence, the number of patients developing metastatic bone disease during their lifetime has also increased. Current treatments for patients with bone metastases are primarily palliative and include localized therapies (radiation and surgery), systemic therapies (chemotherapy, hormonal therapy, radiopharmaceutical, and bisphosphonates although the primary goal of the use of these therapies are often to address the disease itself), and analgesics (opioids and non-steroidal anti-inflammatory drugs). Recently, radiofrequency ablation has been tested as a treatment option for bone metastases \[8\]. Currently, an off label use of Cryoablation techniques are being tested as another alternative for bone Mets palliation. The main goals of these treatments are improvement of quality of life and functional level. These goals can be further described: 1. Pain relief 2. Preservation and restoration of function 3. Local tumor control 4. Skeletal stabilization Treatment with external beam radiation therapy (EBRT) is the standard of care for patients with localized bone pain, and results in the palliation of pain for many of these patients. Twenty to 30% of patients treated with radiation therapy do not experience pain relief \[9-13\]. Re-treatment rates are generally reported in the range of 10-25%. Many patients with relapsed pain or poor response to initial radiation may be lost to follow up or may not be referred back to oncologists for consideration of re-radiation. In addition to relapse and re-treatment, there is an increased risk of pathologic fracture in the peri-radiation period. The fracture rate reported in radiation studies is generally in the range of 1% to 8%. The hyperemic response weakens the adjacent bone and increases the risk of spontaneous fracture. Furthermore, patients who have recurrent pain at a site previously irradiated may not be eligible for further radiation therapy secondary to limitations in normal tissue tolerance. Hesitation on the part of physicians to use a larger dose may be related to increased long-term toxicity. Larger radiation dose produces a greater risk of complications such as fibrosis of normal soft tissue, which can cause a decrement in the quality of life in cases of life expectancy longer than 6 months. There may also be a greater incidence of acute side effects of nausea and vomiting if the treatment field includes the stomach. The percent of patients experiencing vomiting following EBRT ranges from about 5% to 30%. A palliative treatment for painful bone metastases that is non-invasive, without long-term toxicity and having minimal complications would be a useful tool for treating physicians and also a beneficial option for patients suffering from painful bone metastases. Results of preliminary studies indicate that ExAblate treatment of painful bone metastases may be a beneficial treatment option \[14, 15\]. The ExAblate system is a non-invasive thermal ablation device used in the coagulation of various types of soft tissue. The ExAblate system has the potential to achieve the first three of the four previously mentioned goals in the treatment of bone tumors; namely pain relief, preservation and restoration of functional levels and local tumor control \[11\]. The ExAblate system used in the present study is a technological advance over the ExAblate 2000 fixed transducer system in terms of flexibility of use and reduction of positioning related pain to the patients. The ExAblate system used in this study conforms to the patient's body shape at the location of the bone mets location

Eligibility

Minimum Age: 18 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: ALL

Healthy Volunteers: No

Locations

Sheba MC, Ramat Gan, , Israel

Contact Details

Useful links and downloads for this trial

Clinicaltrials.gov

Google Search Results

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