Progressive Multiple Sclerosis Clinical Trial
Official title:
Effects of Transcranial Static Magnetic Field Stimulation (tSMS) in Progressive Multiple Sclerosis
In multiple sclerosis (MS) brains, inflammation induces specific abnormalities of synaptic transmission, collectively called inflammatory synaptopathy. Such synaptopathy consists in unbalanced glutamatergic and GABAergic transmission and in remarkable changes in synaptic plasticity, causing excitotoxic neurodegeneration and impairing the clinical compensation of the ongoing brain damage, thereby exacerbating the clinical manifestation of the disease. In progressive MS (PMS), synaptopathy is characterized by pathological potentatiation of glutamate-mediated synaptic up-scaling (Centonze et al., 2008; Rossi et al., 2013) and loss of long-term synaptic potentiation [LTP (Weiss et al., 2014)], both caused by proinflammatory molecules (released by microglia, astroglia, and infiltrating T and B lymphocytes) (Malenka et al., 2004; Di Filippo et al., 2017; Stampanoni Bassi et al., 2019). The combination of increased up-scaling and decreased LTP has a significant impact on the clinical manifestations of PMS, often presenting with signs and symptoms indicating length-dependent degeneration of neurons of the corticospinal tract. Altered LTP expression impairs brain ability to compensate ongoing neuronal loss (Stampanoni Bassi et al., 2020), and pathological TNF-mediated up-scaling may directly promote excitotoxic damage and neurodegeneration (Rossi et al., 2014). In addition, up-scaling and LTP are mutually exclusive at a given synapse through a mechanism of synaptic occlusion (i.e., pre-existing up-scaling saturates and prevents subsequent LTP expression), further promoting neurodegeneration by preventing the pro-survival effect of LTP, the induction of which activates intracellular anti-apoptotic pathways (Bartlett & Wang, 2013). It follows that a neuromodulation approach that can chronically (over several months) dampen up-scaling expression in the primary motor cortex (M1) of PMS patients could be beneficial by preventing excitotoxic neurodegenerative damage triggered by up-scaling itself (Centonze et al. 2008, Rossi et al. 2014), and also by promoting LTP induction and LTP-dependent functional compensation of deficits, thereby reducing the speed of the neurodegeneration process through increased LTP-dependent neuronal survival and preservation of dendritic spines (Ksiazek-Winiarek et al., 2015). Our study aims to test whether transcranial static magnetic field stimulation (tSMS) could represent such a therapeutic approach, as recently proposed in patients with amyotrophic lateral sclerosis (ALS) (Di Lazzaro et al, 2021). Forty (40) ambulatory patients with PMS, presenting with the ascending myelopathy phenotype of the disease, will be recruited at the MS Center of the Unit of Neurology of the IRCCS Neuromed in Pozzilli (IS). In this randomized, sham-controlled, double-blind, within-subjects, cross-over study (allocation ratio 1:1), we will test the ability of repeated sessions of tSMS applied bilaterally over the M1 to safely reduce disability progression in patients with PMS. Patients will be randomly assigned to either real or sham tSMS. Each patient will participate in two experimental phases (real or sham stimulation). Each patient will self-administer tSMS over right and left M1, two session per day, 60 minutes each. The order will be randomly established and counterbalanced across participants. Both investigators and participants will be blinded to stimulation parameters. In the "real stimulation" phase, tSMS will be applied for 120 minutes each day, at home, for 12 consecutive months. In the "sham stimulation" phase, sham tSMS will be delivered with non-magnetic metal cylinders, with the same size, weight and appearance of the magnets. Clinical evaluations, including the Multiple Sclerosis Functional Composite measure (MSFC) will be performed before, during and after each experimental phase ("real" and "sham"). In addition, blood levels of neurofilaments, excitability and plasticity of M1, and MRI measures of cortical thickness will be measured before, during and after each stimulation phase.
Status | Not yet recruiting |
Enrollment | 40 |
Est. completion date | April 3, 2026 |
Est. primary completion date | April 3, 2026 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 18 Years to 65 Years |
Eligibility | Inclusion Criteria: - Ability to give written informed consent to the study - Age range 18-65 years - Diagnosis of primary of secondary progressive MS according to 2017 revised Macdonald's criteria (Thompson et al., 2017), presenting with signs of symptoms of progressive dysfunction of the corticospinal tract - EDSS = 6,5 - Ability to participate to the study protocol - No or stable (at least six months) DMT or rehabilitative treatments before study entry, and willingness not to change these therapies (including cannabinoids, SSRI, baclofen) during the study. Exclusion Criteria: - Relapsing-remitting MS or progressive MS presenting with signs of symptoms other than those typical of the ascending myelopathy phenotype (i.e. progressive cerebellar or cognitive involvement) - Female with positive pregnancy test at baseline or having active pregnancy plans - Comorbidities for which synaptic plasticity may be altered (i.e., Parkinson's disease, Alzheimer's disease, stroke) - Contraindications to TMS - History or presence of any unstable medical condition such as malignancy or infection - Use of medications with increased risk of seizures (i.e. Fampridine, 4-Aminopyridine) - Concomitant use of drugs that may alter synaptic transmission and plasticity (L-dopa, antiepileptics) |
Country | Name | City | State |
---|---|---|---|
Italy | IRCCS Neuromed | Pozzilli | Isernia |
Lead Sponsor | Collaborator |
---|---|
Neuromed IRCCS |
Italy,
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* Note: There are 25 references in all — Click here to view all references
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Functional assessment, that "change" is being assessed. | The primary aim the project is to evaluate the effect of tSMS in ambulatory patients with PMS with ascending myelopathy phenotype (from now on, simply called PMS) on clinical severity, assessed through the three components of the Multiple Sclerosis Functional Composite (MSFC). | BASELINE EVALUATION 1-30 DAYS BEFORE REAL OR SHAM tSMS T0; 6 MONTHS OF STIMULATION (SESSION 1, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 1, T12); 6 MONTHS OF STIMULATION (SESSION 2, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 2, T12) | |
Secondary | Neurological Assessment, that "change" is being assessed. | Clinical severity will be assessed through the Expanded Disability Status Scale (EDSS). | BASELINE EVALUATION 1-30 DAYS BEFORE REAL OR SHAM tSMS T0; 6 MONTHS OF STIMULATION (SESSION 1, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 1, T12); 6 MONTHS OF STIMULATION (SESSION 2, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 2, T12) | |
Secondary | Neuropsychological and psychometric evaluation | Verbal episodic long-term memory will be evaluated with the Selective Reminding Test as LongTerm Storage (SeRT-LTS). | BASELINE EVALUATION 1-30 DAYS BEFORE REAL OR SHAM tSMS T0; 6 MONTHS OF STIMULATION (SESSION 1, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 1, T12); 6 MONTHS OF STIMULATION (SESSION 2, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 2, T12) | |
Secondary | Neuropsychological and psychometric evaluation | Verbal episodic long-term memory will be evaluated with the Consistent Long Term Retreival (SeRT-CLTR). | BASELINE EVALUATION 1-30 DAYS BEFORE REAL OR SHAM tSMS T0; 6 MONTHS OF STIMULATION (SESSION 1, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 1, T12); 6 MONTHS OF STIMULATION (SESSION 2, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 2, T12) | |
Secondary | Neuropsychological and psychometric evaluation | Verbal episodic long-term memory will be evaluated with the Delayed Recall (SeRT-DR). | BASELINE EVALUATION 1-30 DAYS BEFORE REAL OR SHAM tSMS T0; 6 MONTHS OF STIMULATION (SESSION 1, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 1, T12); 6 MONTHS OF STIMULATION (SESSION 2, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 2, T12) | |
Secondary | Neuropsychological and psychometric evaluation | Visuos patial episodic long-term memory will be evaluated with the Delayed Recall of Rey's Complex Figure (RCF- DR). | BASELINE EVALUATION 1-30 DAYS BEFORE REAL OR SHAM tSMS T0; 6 MONTHS OF STIMULATION (SESSION 1, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 1, T12); 6 MONTHS OF STIMULATION (SESSION 2, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 2, T12) | |
Secondary | Neuropsychological and psychometric evaluation | Executive functions and attention will be evaluated with Word List Generation (WLG). | BASELINE EVALUATION 1-30 DAYS BEFORE REAL OR SHAM tSMS T0; 6 MONTHS OF STIMULATION (SESSION 1, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 1, T12); 6 MONTHS OF STIMULATION (SESSION 2, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 2, T12) | |
Secondary | Neuropsychological and psychometric evaluation | Executive functions and attention will be evaluated with Symbol Digit Modalities Test (SDMT). | BASELINE EVALUATION 1-30 DAYS BEFORE REAL OR SHAM tSMS T0; 6 MONTHS OF STIMULATION (SESSION 1, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 1, T12); 6 MONTHS OF STIMULATION (SESSION 2, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 2, T12) | |
Secondary | Neuropsychological and psychometric evaluation | Executive functions and attention will be evaluated with Paced Auditory Serial Addition Test (PASAT). | BASELINE EVALUATION 1-30 DAYS BEFORE REAL OR SHAM tSMS T0; 6 MONTHS OF STIMULATION (SESSION 1, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 1, T12); 6 MONTHS OF STIMULATION (SESSION 2, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 2, T12) | |
Secondary | Neuropsychological and psychometric evaluation | Executive functions and attention will be evaluated with Stroop Test interference both in terms of errors (ST-E) | BASELINE EVALUATION 1-30 DAYS BEFORE REAL OR SHAM tSMS T0; 6 MONTHS OF STIMULATION (SESSION 1, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 1, T12); 6 MONTHS OF STIMULATION (SESSION 2, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 2, T12) | |
Secondary | Neuropsychological and psychometric evaluation | Executive functions and attention will be evaluated with response time (ST-RT) | BASELINE EVALUATION 1-30 DAYS BEFORE REAL OR SHAM tSMS T0; 6 MONTHS OF STIMULATION (SESSION 1, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 1, T12); 6 MONTHS OF STIMULATION (SESSION 2, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 2, T12) | |
Secondary | Neuropsychological and psychometric evaluation | Executive functions and attention will be evaluated with Brief Visuospatial Memory Test (BVMT) | BASELINE EVALUATION 1-30 DAYS BEFORE REAL OR SHAM tSMS T0; 6 MONTHS OF STIMULATION (SESSION 1, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 1, T12); 6 MONTHS OF STIMULATION (SESSION 2, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 2, T12) | |
Secondary | Neuropsychological and psychometric evaluation | Praxis ability will be evaluated with the Copy of Rey's Complex. | BASELINE EVALUATION 1-30 DAYS BEFORE REAL OR SHAM tSMS T0; 6 MONTHS OF STIMULATION (SESSION 1, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 1, T12); 6 MONTHS OF STIMULATION (SESSION 2, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 2, T12) | |
Secondary | Neuropsychological and psychometric evaluation | Anxiety will be assessed by State-Trait Anxiety Inventory form Y (STAI-Y) | BASELINE EVALUATION 1-30 DAYS BEFORE REAL OR SHAM tSMS T0; 6 MONTHS OF STIMULATION (SESSION 1, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 1, T12); 6 MONTHS OF STIMULATION (SESSION 2, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 2, T12) | |
Secondary | Neuropsychological and psychometric evaluation | Depression will be assessed with the Beck Depression Inventory-Second Edition (BDI-II). | BASELINE EVALUATION 1-30 DAYS BEFORE REAL OR SHAM tSMS T0; 6 MONTHS OF STIMULATION (SESSION 1, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 1, T12); 6 MONTHS OF STIMULATION (SESSION 2, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 2, T12) | |
Secondary | Neurophysiological assessment | Transcranial magnetic stimulation will be delivered with Magstim 2002 magnetic stimulators or with a Magstim Rapid2 stimulator (The Magstim Company, Whitland, Dyfed, UK). The stimulators will be connected to a figure-of-eight coil (external wing diameter 70 mm) placed tangentially over the scalp with the handle pointing back and away from the midline at about 45°, in the optimal position for eliciting motor evoked potentials (MEPs) in the first dorsal interosseous (FDI) muscle of the dominant hand. Electromyographic signals will be recorded with surface electrodes placed on the target muscle, sampled at 5 KHz with a CED 1401 A/D laboratory interface (Cambridge Electronic Design, Cambridge, UK), and amplified and filtered (bandpass 20 Hz to 2 kHz) with a Digitimer D360 amplifier (Digitimer Ltd, Welwyn Garden City, Hertfordshire, UK), then recorded by a computer with Signal software (Cambridge Electronic Design). Motor thresholds will be calculated at rest (RMT) as the lowest stimul | BASELINE EVALUATION 1-30 DAYS BEFORE REAL OR SHAM tSMS T0; 6 MONTHS OF STIMULATION (SESSION 1, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 1, T12); 6 MONTHS OF STIMULATION (SESSION 2, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 2, T12) | |
Secondary | blood neurofilament light chain (NFL) levels | Measures of NfL will be prospectively performed in the laboratory of Dr. Roberto Furlan (IRCCS San Raffaele, Milan). As a specific marker of neuroaxonal degeneration, increasing serum levels of NfL are seen in patients with a higher degree of disability independently of ongoing relapses (Bjornevik et al., 2020). Together with the medium and heavy subunits, NfL represents one of the scaffolding proteins of the neuronal cytoskeleton and is released in the extracellular space following axonal damage (Teunissen CE, Khalil M. 2012). The levels of serum sNfL, are a sensitive biomarker of ongoing neuroaxonal degeneration and represent a sensitive and clinically meaningful blood biomarker to monitor tissue damage and the effects of therapies in MS (Di Santo et al., 2017). | BASELINE EVALUATION 1-30 DAYS BEFORE REAL OR SHAM tSMS T0; 6 MONTHS OF STIMULATION (SESSION 1, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 1, T12); 6 MONTHS OF STIMULATION (SESSION 2, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 2, T12) | |
Secondary | Magnetic Resonance Imaging (MRI) | Cortical thickness and T2 lesion load will be analyzed by using the 3T MR scanner (GE Signa HDxt, GE Healthcare, Milwaukee, Wisconsin). Will be used a 3D Spoiled Gradient Recalled (SPGR) T1-weighted sequence (178 contiguous sagittal slices, voxel size 1×1×1 mm, TR 7 ms, TE 2.856 ms, Inversion Time 450 ms) and a 3D FLAIR sequence (208 contiguous sagittal 1.6 mm slices, voxel size, 0.8 × 0.8 × 0.8 mm, TR 6000 ms, TE 139.45 ms; Inversion Time 1827 ms). White matter lesions will be segmented from FLAIR and T1 images by using the lesion growth algorithm as implemented in version 2.0.15 of the lesion segmentation tool (www.statistical-modelling.de/lst.html) for SPM12 (https://www.fl.ion.ucl.ac.uk/spm). Furthermore, the computational anatomy toolbox (CAT12, version 916, https://dbm.neuro.uni-jena.de/cat/) as implemented in SPM12 will be used to extract individual cortical thickness values from lesion-filled MR images. Finally, T2 lesion load will be computed from 3D T1 and 3d FLAIR images by | BASELINE EVALUATION 1-30 DAYS BEFORE REAL OR SHAM tSMS T0; 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 1, T12); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 2, T12) | |
Secondary | Patients' adherence to tSMS, potential side effects and adverse events | The number of completed stimulation sessions will be recorded daily by each patient and/or the caregiver during the periods of self-administered tSMS treatment. Patients will fill a diary in which they will be instructed to record the following data:
likert scale on sleep quality, presence of headache, treatment compliance. Potential side effects and adverse events will be reported by patients to the referring physician. If necessary, further clinical evaluations will be scheduled. At each timepoint, compliance will be assessed according to the following criteria: "fully compliant" if he/she has performed at least 80% of the planned sessions of stimulation, "moderately compliant" if he/she has performed between 50% and 80% of the treatment sessions, "poor -compliant" if he/she has performed <50% of the treatment sessions. Caregivers will be instructed to monitor and favor treatment adherence. |
6 MONTHS OF STIMULATION (SESSION 1, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 1, T12); 6 MONTHS OF STIMULATION (SESSION 2, T6); 1-30 DAYS AFTER THE END OF STIMULATION (SESSION 2, T12) |
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