Epidural Spinal Cord Stimulation for Lower-limb Impairment in Adrenomyeloneuropathy
EPIC-AMN
Spinal Cord Stimulation Surgery for Improving Lower Limb Motor Dysfunction in Adrenomyeloneuropathy (AMN): A Prospective, Multicenter, Single-Arm, Self-Controlled Study.
1 other identifier
interventional
10
1 country
4
Brief Summary
Adrenal spinal neuropathy (AMN) is a rare X-linked genetic disease caused by mutations in the ABCD1 gene, and belongs to a special type of adrenal leukodystrophy. The patient's lower limb strength is weakened, the range of motion of the ankle joint is reduced, the hip flexors are weak and affect walking, and the peripheral nerves and vibration sensation are damaged. As the condition worsens, the lower limb muscle tone changes from hyperactivity to decrease, ultimately transitioning from spastic paralysis to flaccid paralysis. At present, the treatment plan for AMN is not yet perfect, and effective therapies are urgently needed to alleviate symptoms. Spinal cord electrical stimulation (SCS) is the implantation of a thin electrode into the epidural space of the corresponding spinal segment within the spinal canal. Then connect the electrodes to a nerve stimulator implanted subcutaneously in the iliac region, and use electrical pulses to stimulate the conduction of sensory neurons in the posterior column and posterior horn of the spinal cord for treatment, which can achieve the goal of controlling pain. In addition, SCS has also conducted research on the recovery of lower limb function in paraplegic patients and upper limb function in post-stroke hemiplegic patients, and has improved corresponding motor dysfunction to a certain extent. Spinal cord stimulation may be a potential treatment for motor dysfunction in AMN. Based on the above, this study attempts to evaluate the efficacy of SCS in treating lower limb muscle tone and movement disorders in AMN patients, and explore the potential therapeutic effects and related mechanisms of SCS on AMN. In this study, 10 AMN patients will be recruited. After enrollment, preoperative evaluation will be conducted. After preliminary assessment of motor function, neurological evaluation, and other related examinations, lumbar spinal nerve stimulators and pulse generators were implanted in our hospital. After the implantation surgery is completed, depending on the patient's recovery status, they will be transferred to various centers for subsequent rehabilitation treatment within one to two weeks, and then turned on for treatment. Before starting up, a second corresponding inspection and evaluation will be conducted. The third and fourth corresponding inspections and evaluations will be conducted one week and four weeks after startup, respectively. The patient will be discharged 4 weeks after starting up, and then return to the hospital for the fifth and sixth corresponding examinations and evaluations at 4 weeks and 6 months after discharge. Evaluate the effectiveness and safety of SCS in improving lower limb motor dysfunction in AMN patients through statistical analysis.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at below P25 for not_applicable
Started Feb 2025
Typical duration for not_applicable
4 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
January 6, 2025
CompletedFirst Posted
Study publicly available on registry
January 28, 2025
CompletedStudy Start
First participant enrolled
February 10, 2025
CompletedPrimary Completion
Last participant's last visit for primary outcome
June 1, 2027
ExpectedStudy Completion
Last participant's last visit for all outcomes
October 1, 2027
January 28, 2025
January 1, 2025
2.3 years
January 6, 2025
January 21, 2025
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
6-minute walk test (6MWT)
This evaluation is based on the walking distance that patients cover in six minutes when walking as fast as possible along a straight corridor, which is a indicator for assessing the lower limb motor function.
Preoperative stage; One week after surgery; One week after device activation; Four weeks after device activation; Four weeks after discharge from hospital; Six months after discharge from hospital
Secondary Outcomes (17)
Adverse event
One week after surgery; One week after device activation; Four weeks after device activation; Four weeks after discharge from hospital; Six months after discharge from hospital; One year after discharge from hospital.
Discomfort and pain.
Preoperative stage; One week after surgery; One week after device activation; Four weeks after device activation; Four weeks after discharge from hospital; Six months after discharge from hospital; One year after discharge from hospital.
Spinal cord and brain MRI
Preoperative stage; One week after surgery; One week after device activation; Four weeks after device activation; Four weeks after discharge from hospital; Six months after discharge from hospital
The degree of improvement in electrophysiological indicators of the muscles in the affected limbs
Preoperative stage; One week after surgery; One week after device activation; Four weeks after device activation; Four weeks after discharge from hospital; Six months after discharge from hospital
Qmax(The maximum flow rate)
Preoperative stage; One week after surgery; One week after device activation; Four weeks after device activation; Four weeks after discharge from hospital; Six months after discharge from hospital
- +12 more secondary outcomes
Study Arms (1)
self-controlled group
EXPERIMENTALThis experiment is a single-arm trial, so there is only one group, forming a self-controlled comparison before and after the Spinal cord stimulation.
Interventions
Upon completion of the initial assessments, a lumbar spinal cord nerve stimulator and pulse generator will be implanted. Following surgery, based on the patient's recovery status, the patient will be transferred to the respective center for rehabilitation within one to two weeks. Afterward, electrical stimulation therapy will be initiated. Stimulation should be applied at least three days per week. Each day, the total stimulation time should be between 4 and 8 hours. Stimulation Modes: Continuous Stimulation: For example, if 6 hours of stimulation are prescribed, the stimulator will run uninterrupted for 6 hours. Intermittent Stimulation: For instance, a cycle of 40 seconds on and 20 seconds off. If a total of 6 hours of active stimulation is needed, the stimulator must remain on for 9 hours in total to accommodate rest intervals.The ranges for each parameter are as follows:Stimulation Frequency: 2 Hz - 2000 Hz, Pulse Width: 20 μs - 1000 μs, Stimulation Amplitude:Voltage: 0 V - 10 v
Eligibility Criteria
You may qualify if:
- Conforming to the diagnostic criteria of AMN, with a definite genetic testing report, and complicated by lower limb motor function disorders;
- Capable of normal communication and able to complete scale tests independently (as determined by on-site scale tests);
- Willing to participate in this study after giving informed consent;
- The muscle tone of the patient's bilateral lower extremities was elevated.
You may not qualify if:
- Other inherited diseases;
- Other severe central nervous system diseases;
- History of brain surgery;
- Psychiatric and psychological diseases such as depression and anxiety;
- The presence of metallic foreign bodies or prostheses (such as cardiac pacemakers, insulin pumps) in the body, claustrophobia, and other contraindications for MRI;
- Informed consent was not obtained;
- Unable to tolerate MRI-related examinations;
- Received anticoagulant, antispasmodic or antiepileptic drug therapies throughout the entire study period;
- Postoperative wound infection;
- Other motor disorders, spinal cord pathologies, fractures, osteoarthritis, amputations, scoliosis and other movement-affecting diseases.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- Third Military Medical Universitylead
- Beijing Tiantan Hospitalcollaborator
- Jingmen No.1 People's Hospitalcollaborator
- The 958th Hospital of the Chinese People's Liberation Armycollaborator
Study Sites (4)
Beijing TianTan Hospital
Beijing, Beijing Municipality, 100070, China
The 958 Hospital of Chinese People's Liberation Army, The Jiangbei Campus of Southwest Hospital, The First Affiliated Hospital of Army Medical University
Chongqing, Chongqing Municipality, 400020, China
the Southwest hospital
Chongqing, Chongqing Municipality, 400038, China
Jingmen No.1 People's Hospital
Jingmen, Hubei, 448000, China
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MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- NA
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- SINGLE GROUP
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Southwest hospital
Study Record Dates
First Submitted
January 6, 2025
First Posted
January 28, 2025
Study Start
February 10, 2025
Primary Completion (Estimated)
June 1, 2027
Study Completion (Estimated)
October 1, 2027
Last Updated
January 28, 2025
Record last verified: 2025-01
Data Sharing
- IPD Sharing
- Will not share