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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT00001417
Other study ID # 940158
Secondary ID 94-N-0158
Status Completed
Phase N/A
First received November 3, 1999
Last updated March 3, 2008
Start date June 1994
Est. completion date May 2002

Study information

Verified date May 2002
Source National Institutes of Health Clinical Center (CC)
Contact n/a
Is FDA regulated No
Health authority United States: Federal Government
Study type Observational

Clinical Trial Summary

Tumors of the spine can be described as primary, meaning that the tumor originated from cells normally found in the spine, or metastatic, cells from another area of the body that have spread to the spine. Metastatic tumors are more common than primary tumors. Tumors of the spine can press against the spinal cord and interfere with information traveling down from the brain to the nerves of the spinal cord. As a result, patients with spinal tumors can suffer from loss of movement and sensation within areas of the body below the tumor. In addition, tumors of the spine are typically painful conditions.

Presently, the treatment of choice for spinal tumors is radiation therapy. However, many tumors of the spine become resistant to radiation therapy. In addition, because the spinal cord is often so close to the tumor it can be damaged by the radiation.

Absolute (100%) ethanol is commonly known as "alcohol". It is the same kind of alcohol found in alcoholic beverages. When pure alcohol is injected directly into a tumor it can destroy cells and blood vessels. Because of this feature, researchers would like to test the effectiveness of alcohol in treating patients with spinal tumors.

Researchers believe that intratumoral ethanol injection is a treatment worth studying more closely because it is minimally invasive, has been proven to be an effective treatment for other types of metastatic tumors, can be used repeatedly, and does not interfere with other treatments such as surgery.

In addition to testing the effectiveness of intratumoral ethanol injection, this study will attempt to determine the causes of pain associated with spinal tumors.


Description:

Although radiation therapy is currently the treatment of choice for most spinal metastases, radioresistant and recurrent neoplasms remain therapeutic dilemmas. Because of the debility and shortened life expectancy of patients with spinal metastases, treatment that minimizes blood loss, convalescence, and immobility is critical. The effectiveness and safety of intratumoral injection of absolute ethanol in eradicating vertebral hemangiomas and hepatic metastases suggests that intratumoral ethanol injection may also be effective in treating vertebral metastases. Since most spinal metastases can now be diagnosed with MRI before they produce spinal instability, it may be possible to treat them with direct ethanol infusion while preserving spinal stability. Direct ethanol infusion may prove especially useful in treating symptomatic patients who have received maximal tolerable radiation doses to the spinal cord. Unlike radiation, which is limited by total radiation dosage, and intraarterial alcohol, which precludes multiple treatments by occluding the feeding arteries, intratumoral ethanol injection can be repeated as necessary to obliterate residual tumor. The potential neurotoxic effects of ethanol can be avoided by using CT-guidance to position the needle, by monitoring a test injection with contrast, and by injecting ethanol slowly and in small volumes. Intratumoral injection of absolute ethanol warrants a clinical trial because it is minimally invasive, has been effective in treating peripheral metastases, can be used repeatedly, and does not preclude other types of treatments such as open surgery.

As well as testing the therapeutic efficacy of intratumoral ethanol for spinal metastasis, this protocol seeks to elucidate the pathophysiology of pain from spinal metastasis. Correlation of changes in pain with changes in tumor size and tumor pressure pre- and post-ethanol injection should indicate the relationship of pain to tumor size and pressure.

A group of 11 patients with vertebral hemangiomas has been treated with intratumoral ethanol at the NIH. This protocol will accrue patients with vertebral hemangiomas who require treatment with intratumoral ethanol and will continue the post-treatment evaluation of patients previously treated with intratumoral ethanol at the NIH.


Recruitment information / eligibility

Status Completed
Enrollment 30
Est. completion date May 2002
Est. primary completion date
Accepts healthy volunteers No
Gender Both
Age group N/A and older
Eligibility Patients must have a vertebral tumor documented by MRI.

Vertebral height must be at least 50 percent of adjacent vertebrae.

Patients must be symptomatic from their spinal tumor. Treatment attempts to reduce the size of, or eliminate, their tumors and to relieve their symptoms. The treatment of the vertebral tumor must be indicated based on the patient's condition.

Prior surgical or radiation therapy for the vertebral tumor will not result in exclusion from the study if there is radiographic evidence of tumor and there is evidence of persistent local pain, epidural compression, or neurological deterioration related to the vertebral tumor.

The patient must be able to comprehend the risks of the therapy and must be able to give informed consent.

Pregnancy will exclude participation due to the radiation exposure involved in this protocol.

Bleeding disorders will exclude a patient from the protocol unless the disorder can be corrected prior to treatment.

Patients must have no contraindications to MRI scanning.

Patients undergoing ethanol injection in the x-ray department must be able to lay prone for at least one hour with intravenous sedation and analgesia.

Patients whose tumors have not responded to radiation therapy will be candidates for ethanol infusion.

Patients with tumors in areas that have received maximal radiation doses to the spinal cord will be candidates for ethanol infusion.

Patients whose poor general condition precludes open surgery will be candidates for ethanol infusion.

Patients who wish to avoid the morbidity and potential mortality of open surgery will be candidates for ethanol injection.

Patients with radioresistant tumors such as melanoma or prostate carcinoma are candidates for ethanol infusion even if they have not undergone prior irradiation.

Patients with radiation-sensitive spinal tumors such as breast, kidney, and lung carcinoma, lymphoma, myeloma, Ewing's sarcoma, neuroblastoma, seminoma will not be entered into the protocol unless their tumors have either responded to radiation or lie at spinal cord levels that have already received maximal tolerable radiation doses.

Patients with less than a 2 month life expectancy will be excluded.

Patients with symptomatic vertebral metastases at more than 3 spinal levels will be excluded.

Patients with asymptomatic vertebral metastases will be excluded.

Study Design

N/A


Locations

Country Name City State
United States National Institute of Neurological Disorders and Stroke (NINDS) Bethesda Maryland

Sponsors (1)

Lead Sponsor Collaborator
National Institute of Neurological Disorders and Stroke (NINDS)

Country where clinical trial is conducted

United States, 

References & Publications (3)

Heiss JD, Doppman JL, Oldfield EH. Brief report: relief of spinal cord compression from vertebral hemangioma by intralesional injection of absolute ethanol. N Engl J Med. 1994 Aug 25;331(8):508-11. — View Citation

Heiss JD, Doppman JL, Oldfield EH. Treatment of vertebral hemangioma by intralesional injection of absolute ethanol. N Engl J Med. 1996 May 16;334(20):1340. — View Citation

Lonser RR, Heiss JD, Oldfield EH. Tumor devascularization by intratumoral ethanol injection during surgery. Technical note. J Neurosurg. 1998 May;88(5):923-4. — View Citation

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