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ExAblate (MRgFUS) Treatment of Metastatic Bone Tumors for the Palliation of Pain

A Pivotal Study to Evaluate the Effectiveness and Safety of ExAblate Treatment of Metastatic and Multiple Myeloma Bone Tumors for the Palliation of Pain in Patients Who Are Not Candidates for Radiation Therapy

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00656305
Enrollment
147
Registered
2008-04-11
Start date
2008-03-31
Completion date
2012-09-30
Last updated
2020-02-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Bone Metastases, Multiple Myeloma

Keywords

Bone Cancer, Pain Palliation, Metastasis, Multiple Myeloma, Breast Cancer, Lung Cancer, Prostate Cancer, cancer related Pain, Tumors

Brief summary

A Pivotal Study to Evaluate the Effectiveness and Safety of ExAblate Treatment of Metastatic Bone and Multiple Myeloma Tumors for the Palliation of Pain in Patients Who are not Candidates for Radiation Therapy

Interventions

DEVICEExAblate MRfFUS

MR guided focused ultrasound.

DEVICESham

sham comparator

Sponsors

InSightec
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Subject)

Eligibility

Sex/Gender
ALL
Age
18 Years to 100 Years
Healthy volunteers
No

Inclusion criteria

1. Men and women age 18 and older 2. Patients who are able and willing to give consent and able to attend all study visits 3. Patients who are suffering from symptoms of bone metastases or multiple myeloma bone lesions and are radiation failure patients: Radiation failure candidates are those who have received radiation without adequate relief from metastatic bone pain as determined by the patient and treating physician, those for whom their treating physician would not prescribe radiation or additional radiation treatments, and those patients who refuse additional radiation therapy, 4. Patients who refuse other accepted available treatments such as surgery or narcotics for pain alleviation. 5. Patient with NRS (0-10 scale) pain score ≥ 4 irrespective of medication 6. Targeted tumor(s) are ExAblate device accessible and are located in ribs, extremities (excluding joints), pelvis, shoulders and in the posterior aspects of the following spinal vertebra: Lumbar vertebra (L3 - L5), Sacral vertebra (S1 - S5) 7. Targeted tumor (treated) size up to 55 cm2 in surface area 8. Patient whose targeted (treated) lesion is on bone and the interface between the bone and lesion is deeper than 10-mm from the skin. 9. Targeted (treated) tumor clearly visible by non-contrast MRI, and ExAblate MRgFUS device accessible 10. Able to communicate sensations during the ExAblate treatment 11. Patients on ongoing chemotherapy regimen for at least 1 month at the time of eligibility: \- with same chemotherapy regimen (as documented from patient medical dossier), And \- Worst pain NRS still \>= 4 And \- do NOT plan to initiate a new chemotherapy for pain palliation should be eligible for the study. 12. No radiation therapy to targeted (most painful) lesion in the past two weeks 13. Bisphosphonate intake should remain stable throughout the study duration. 14. Patients will have from 1 to 5 painful lesions and only the most painful lesion will be treated. 15. Patients with persistent distinguishable pain associated with 1 site to be treated (if patient has pain from additional sites, the pain from the additional sites must be evaluated as being less intense by at least 2 points on the NRS compared to the site to be treated).

Exclusion criteria

1. Patients who either * Need surgical stabilization of the affected bony structure (\>7 fracture risk score, see Section 7.3) OR * Targeted tumor is at an impending fracture site (\>7 on fracture risk score, see Section 7.3). OR \- Patients with surgical stabilization of tumor site with metallic hardware 2. More than 5 painful lesions, or more than 1 requiring immediate localized treatment 3. Targeted (treated) tumor is in the skull 4. Patients on dialysis 5. Patients with life expectancy \< 3-Months 6. patients with an acute medical condition (e.g., pneumonia, sepsis) that is expected to hinder them from completing this study. 7. Patients with unstable cardiac status including: * Unstable angina pectoris on medication * Patients with documented myocardial infarction within six months of protocol entry * Congestive heart failure requiring medication (other than diuretic) * Patients on anti-arrhythmic drugs 8. Severe hypertension (diastolic BP \> 100 on medication) 9. Patients with standard contraindications for MR imaging such as non-MRI compatible implanted metallic devices including cardiac pacemakers, size limitations (weight \>250 pounds), etc. 10. Patients with an active infection or severe hematological, neurological, or other uncontrolled disease. 11. Known intolerance or allergies to the MRI contrast agent (e.g. Gadolinium or Magnevist) including advanced kidney disease 12. KPS Score \< 60 (See Definitions below) 13. Severe cerebrovascular disease (multiple CVA or CVA within 6 months) 14. Individuals who are not able or willing to tolerate the required prolonged stationary position during treatment (approximately 2 hrs.) 15. Target (treated) tumor is less then 1cm from nerve bundles, bowels or bladder. 16. Are participating or have participated in another clinical trial in the last 30 days 17. Patients initiating a new chemotherapy regime, or radiation (for the targeted most painful lesion) within the last 2 weeks 18. Patients unable to communicate with the investigator and staff. 19. Patients with persistent undistinguishable pain (pain source unidentifiable) 20. Targeted (treated) tumor surface area \>= 55 cm2 21. Patient whose bone-lesion interface is \< 10-mm from the skin 22. Targeted (treated) tumor NOT visible by non-contrast MRI, 23. Targeted (most painful) tumor Not accessible to ExAblate 24. The targeted tumor is less than 2 points more painful compared to other painful lesions on the site specific NRS.

Design outcomes

Primary

MeasureTime frameDescription
Number of Responders3 months post treatmentUsing the Numerical Rating Score (NRS) for pain (0 being no pain and 10 being worst imaginable pain), each subject was rated as a Responder or Non-responder. A responder is defined as a subject with a reduction in NRS worst score from baseline of two (2) or more points, and no increase in pain medication use.

Secondary

MeasureTime frameDescription
Number of Participants With a Change in Medication Use3 months post treatmentMedication Use change reported from baseline until of study. Medication use is quantified by morphine equivalent usage (measured separately from Responder/Non-responder definition for the primary endpoint)
Quality of Life (QOL) as Measured by Change in Bodily Pain Inventory (BPI) From Baseline3 months post treatmentThe BPI-QOL questionnaire is designed to show the severity and interference of pain in the lives of patients. This is a 7-item questionnaire that asks respondents the extent to which pain interferes with their general activity, mood, walking ability, normal work, relations with other people, sleep and enjoyment of life using a 0-10 numerical rating scale in which 0 represents 'does not interfere' and 10 indicates 'completely interferes'. Responses to the 7 items are averaged to form the pain interference scale score. Lower scores are better, showing less interference in daily activities while higher scores show more interference and hence worse outcomes.

Countries

Canada, Israel, Italy, Russia, United States

Participant flow

Pre-assignment details

Of the 147 subjects enrolled (signed consent), 23 subjects failed additional study requirements and 9 subjects exited after randomization but prior to treatment

Participants by arm

ArmCount
ExAblate Treatment Arm
ExAblate 2000: MR guided focused ultrasound
87
ExAblate Sham Control Arm
ExAblate 2000: MR guided focused ultrasound sham
28
Total115

Baseline characteristics

CharacteristicExAblate Treatment ArmTotalExAblate Sham Control Arm
Age, Continuous58.7 years
STANDARD_DEVIATION 13.3
57.8 years
STANDARD_DEVIATION 11.9
56.8 years
STANDARD_DEVIATION 10.5
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
1 Participants3 Participants2 Participants
Race (NIH/OMB)
Black or African American
1 Participants1 Participants0 Participants
Race (NIH/OMB)
More than one race
4 Participants4 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
81 Participants107 Participants26 Participants
Region of Enrollment
Canada
6 participants7 participants1 participants
Region of Enrollment
Israel
17 participants22 participants5 participants
Region of Enrollment
Italy
0 participants1 participants1 participants
Region of Enrollment
Russia
34 participants44 participants10 participants
Region of Enrollment
United States
30 participants41 participants11 participants
Sex: Female, Male
Female
49 Participants71 Participants22 Participants
Sex: Female, Male
Male
38 Participants44 Participants6 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
8 / 870 / 28
other
Total, other adverse events
49 / 871 / 28
serious
Total, serious adverse events
8 / 870 / 28

Outcome results

Primary

Number of Responders

Using the Numerical Rating Score (NRS) for pain (0 being no pain and 10 being worst imaginable pain), each subject was rated as a Responder or Non-responder. A responder is defined as a subject with a reduction in NRS worst score from baseline of two (2) or more points, and no increase in pain medication use.

Time frame: 3 months post treatment

Population: 115 subjects were underwent treatment. Of these, 4 subjects terminated treatment prior to full completion. These 4 subjects are excluded from the efficacy analysis. An additional 4 subjects were found to have been enrolled in the study more than once. In a pre-PMA meeting with FDA, it was agreed upon to exclude these 4 subjects from the analysis.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
ExAblate Treatment ArmNumber of Responders54 Participants
ExAblate Sham Control ArmNumber of Responders6 Participants
Secondary

Number of Participants With a Change in Medication Use

Medication Use change reported from baseline until of study. Medication use is quantified by morphine equivalent usage (measured separately from Responder/Non-responder definition for the primary endpoint)

Time frame: 3 months post treatment

Population: Only 26 of the 81 subjects in ExAblate treatment arm and 6 of 26 in the sham arm were taking non-opioid medication at baseline.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
ExAblate Treatment ArmNumber of Participants With a Change in Medication Use15 Participants
ExAblate Sham Control ArmNumber of Participants With a Change in Medication Use2 Participants
Secondary

Quality of Life (QOL) as Measured by Change in Bodily Pain Inventory (BPI) From Baseline

The BPI-QOL questionnaire is designed to show the severity and interference of pain in the lives of patients. This is a 7-item questionnaire that asks respondents the extent to which pain interferes with their general activity, mood, walking ability, normal work, relations with other people, sleep and enjoyment of life using a 0-10 numerical rating scale in which 0 represents 'does not interfere' and 10 indicates 'completely interferes'. Responses to the 7 items are averaged to form the pain interference scale score. Lower scores are better, showing less interference in daily activities while higher scores show more interference and hence worse outcomes.

Time frame: 3 months post treatment

Population: 115 subjects were underwent treatment. Of these, 4 subjects terminated treatment prior to full completion. These 4 subjects are excluded from the efficacy analysis. An additional 4 subjects were found to have been enrolled in the study more than once. In a pre-PMA meeting with FDA, it was agreed upon to exclude these 4 subjects from the analysis.

ArmMeasureValue (MEAN)Dispersion
ExAblate Treatment ArmQuality of Life (QOL) as Measured by Change in Bodily Pain Inventory (BPI) From Baseline2.5 score on a scaleStandard Deviation 2.8
ExAblate Sham Control ArmQuality of Life (QOL) as Measured by Change in Bodily Pain Inventory (BPI) From Baseline.3 score on a scaleStandard Deviation 2.3

Source: ClinicalTrials.gov · Data processed: Mar 8, 2026