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Noninvasive Brain Stimulation for Cervical Dystonia (NetworkStim)

The Effect of Noninvasive Brain Stimulation on Symptoms of Cervical Dystonia

The primary aim of this study is to assess whether continuous theta-burst stimulation (cTBS) can be helpful in reducing symptoms of idiopathic cervical dystonia. This will be a parallel-group, randomised, sham-controlled, double blind clinical trial. Patients and investigators measuring patient symptoms clinical scales will be blinded from allocation group, investigators delivering the intervention will not be blinded, as this is not feasible. Real cTBS will be compared to sham cTBS, with patients allocated to these two groups with a 1:1 recruitment ratio.

Bilateral cTBS will be delivered four times daily, over eight days, for a total of 32 bilateral cTBS sessions. The primary outcome is the Toronto Western Spasmodic Torticollis Rating Scale (TWSTRS). This will be administered at T1 (pre-cTBS), T2 (day 10, following days 2-9 where patients received the intervention), T3 (2 weeks post the final session of cTBS), and T4 (4-5 weeks post the final session of cTBS).

Secondary outcomes will be the TWSTRS subscales (severity, disability, pain), Quality of Life scale, Global dystonia severity rating scale (GDS), Fahn Tolosa Marin (FTM) modified (to include only questions relevant to head/neck tremor) tremor scale, kinematic data of patient's movement patterns, motor evoked potentials (MEPs), and resting-state fMRI data (fMRI).

연구 개요

상세 설명

Cervical dystonia (CD) is the most common form of dystonia and is characterised by excessive and involuntary muscle contractions of the muscles in the neck. Whilst botulinum neurotoxin (BoNT) injections to the affected muscles can provide therapeutic relief to CD patients, up to one-third of patients report an inadequate response to treatment. In more severe cases, deep brain stimulation (DBS) of the globus pallidus interna (GPi) or subthalamic nucleus is an effective treatment for CD symptoms, directly and indirectly modulating networks thought to be abnormal in CD. Transcranial magnetic stimulation (TMS) trials have previously been conducted to investigate its potential to ameliorate CD symptoms. These studies have shown limited success, with small sample sizes, and variable results. A major factor limiting the more effective use of TMS in CD is that it is not yet known where to target with TMS, given the many structures implicated in the neurobiology of the disorder. A prior study using lesion network mapping in CD attempted to address this issue by localising a brain network connected to lesions causing CD. Corp, et al. demonstrated that although causal lesions were located throughout the brain, all lesions were functionally connected to a brain network involving positive connectivity to the cerebellum and negative connectivity to the somatosensory cortex (S1). Preliminary work from our group examined the effect of targeting this lesion network mapping-derived S1 cluster using TMS. First, a single session of continuous theta-burst stimulation (cTBS) to the S1 indicated target engagement, as demonstrated by abnormal metabolic response in CD patients, and next, a pilot trial of 10 days of daily cTBS demonstrated a 12% reduction in CD symptoms. The primary aim of this study is to assess whether a higher-dose of (4x daily) cTBS can increase therapeutic effect.

연구 유형

중재적

등록 (추정된)

26

단계

  • 해당 없음

연락처 및 위치

이 섹션에서는 연구를 수행하는 사람들의 연락처 정보와 이 연구가 수행되는 장소에 대한 정보를 제공합니다.

연구 연락처

연구 연락처 백업

연구 장소

참여기준

연구원은 적격성 기준이라는 특정 설명에 맞는 사람을 찾습니다. 이러한 기준의 몇 가지 예는 개인의 일반적인 건강 상태 또는 이전 치료입니다.

자격 기준

공부할 수 있는 나이

  • 성인
  • 고령자

건강한 자원 봉사자를 받아들입니다

아니

설명

Inclusion Criteria

  • Aged between 18 and 85 years
  • Diagnosis of idiopathic cervical dystonia made by an expert physician
  • Last botulinum toxin injection administered at least two months before the start of participation in the study (Albanese, Abbruzzese et al. 2015)

Exclusion Criteria

  • Head or neck trauma occurring less than 12 months before the onset of dystonia
  • Acquired dystonia (e.g., drug-induced, brain lesions or trauma)
  • History of major psychiatric disorders (e.g., bipolar disorder, schizophrenia, obsessive-compulsive disorder)
  • History of neurological diseases other than CD (e.g., epilepsy, Parkinson's disease)
  • Other contraindications for TMS or brain MRI (e.g., metal in the head)
  • Pregnant or breastfeeding women
  • History of substance abuse or dependence

공부 계획

이 섹션에서는 연구 설계 방법과 연구가 측정하는 내용을 포함하여 연구 계획에 대한 세부 정보를 제공합니다.

연구는 어떻게 설계됩니까?

디자인 세부사항

  • 주 목적: 치료
  • 할당: 무작위
  • 중재 모델: 병렬 할당
  • 마스킹: 더블

무기와 개입

참가자 그룹 / 팔
개입 / 치료
실험적: Active cTBS
The patients of this group will receive 4 sessions of bilateral somatosensory cortex cTBS per day for 8 days
Continuous theta-burst stimulation (cTBS) will be delivered using a Magstim Rapid machine connected to a 70mm cooled coil at 80% of a participants resting motor threshold (RMT). cTBS will consist of three-pulse bursts at 50Hz repeated every 200ms (5Hz) for 40 seconds (600 pulses total) (Huang, Edwards et al. 2005). All cTBS procedures will be conducted bilaterally, with application first over the left hemisphere, before moving to the right (approximately one minute will separate each hemisphere). Bilateral cTBS will be delivered four times daily, over eight days, for a total of 32 bilateral cTBS sessions. This 4x day protocol will follow prior studies in neglect patients, delivered at time intervals of 0, 15, 60, and 75 minutes (Nyffeler, Cazzoli et al. 2008, Cazzoli, Müri et al. 2012, Nyffeler, Vanbellingen et al. 2019).
가짜 비교기: Sham cTBS
The patients of this group will receive 4 sessions of bilateral somatosensory cortex cTBS per day for 8 days, delivered using a sham TMS coil.
Sham cTBS procedures will be identical to those in the active cTBS arm but applied using a 70mm sham TMS coil.

연구는 무엇을 측정합니까?

주요 결과 측정

결과 측정
측정값 설명
기간
Symptoms of cervical dystonia - Toronto Western Spasmodic Torticollis Rating Scale total score
기간: For a single patient, a minimum of 6 weeks and a maximum of 16 weeks
The total score on the Toronto Western Spasmodic Torticollis Rating Scale. Range: 0-85. Higher scores mean worse symptoms.
For a single patient, a minimum of 6 weeks and a maximum of 16 weeks

2차 결과 측정

결과 측정
측정값 설명
기간
Motor evoked potentials
기간: For a single patient, 10 days. Pre and post cTBS
Motor evoked potential amplitudes from input-output curves, measured using surface electromyography
For a single patient, 10 days. Pre and post cTBS
Magnetic resonance imaging
기간: For a single patient, 10 days. Pre and post cTBS
Functional connectivity changes from pre-defined regions of interest in the brain
For a single patient, 10 days. Pre and post cTBS
Symptoms of cervical dystonia - Toronto Western Spasmodic Torticollis Rating Scale subscales
기간: For a single patient, a minimum of 6 weeks and a maximum of 16 weeks
The scores on each of the subscales of the Toronto Western Spasmodic Torticollis Rating Scale (severity, disability, pain). Higher scores mean worse symptoms.
For a single patient, a minimum of 6 weeks and a maximum of 16 weeks
Symptoms of cervical dystonia - kinematic recordings
기간: For a single patient, 10 days. Pre and post cTBS
Metrics of patients' head and neck movements from a wearable motion sensor. Higher scores will mean greater movement error.
For a single patient, 10 days. Pre and post cTBS
Fahn Tolosa Marin tremor scale
기간: For a single patient, a minimum of 6 weeks and a maximum of 16 weeks
Measurement of head and neck tremor. Higher scores mean worse symptoms.
For a single patient, a minimum of 6 weeks and a maximum of 16 weeks
Global dystonia severity rating scale
기간: For a single patient, a minimum of 6 weeks and a maximum of 16 weeks
Measurement of dystonia in all body parts. Range: 0-100. Higher scores mean worse symptoms.
For a single patient, a minimum of 6 weeks and a maximum of 16 weeks

공동 작업자 및 조사자

여기에서 이 연구와 관련된 사람과 조직을 찾을 수 있습니다.

수사관

  • 수석 연구원: Vincenzo Di Lazzaro, MD, Campus Bio-Medico Hospital

연구 기록 날짜

이 날짜는 ClinicalTrials.gov에 대한 연구 기록 및 요약 결과 제출의 진행 상황을 추적합니다. 연구 기록 및 보고된 결과는 공개 웹사이트에 게시되기 전에 특정 품질 관리 기준을 충족하는지 확인하기 위해 국립 의학 도서관(NLM)에서 검토합니다.

연구 주요 날짜

연구 시작 (실제)

2026년 7월 6일

기본 완료 (추정된)

2028년 5월 6일

연구 완료 (추정된)

2028년 5월 6일

연구 등록 날짜

최초 제출

2026년 6월 26일

QC 기준을 충족하는 최초 제출

2026년 6월 26일

처음 게시됨 (실제)

2026년 7월 2일

연구 기록 업데이트

마지막 업데이트 게시됨 (실제)

2026년 9월 17일

QC 기준을 충족하는 마지막 업데이트 제출

2026년 9월 14일

마지막으로 확인됨

2025년 11월 1일

추가 정보

이 연구와 관련된 용어

개별 참가자 데이터(IPD) 계획

개별 참가자 데이터(IPD)를 공유할 계획입니까?

예

IPD 계획 설명

For patients who provide informed consent: pseudonymised MRI data will be uploaded to the 'OpenNeuro' repository, and pseudonymised brain stimulation data and code will be uploaded to the 'Big NIBS data' repository, with the associated clinical scores

IPD 공유 기간

The Study Protocol, SAP, and ICF will be made available with this pre-registration prior to study commencement. Generated participant data and code will be available after the pre-print of the publication describing it are released. There is no time limit for how long the data will be made available.

IPD 공유 액세스 기준

Public access as per the terms of clinicaltrials.gov and the OpenNeuro and Big NIBS data repositories.

IPD 공유 지원 정보 유형

  • 연구_프로토콜
  • 수액
  • ICF
  • ANALYTIC_CODE

약물 및 장치 정보, 연구 문서

미국 FDA 규제 의약품 연구

아니

미국 FDA 규제 기기 제품 연구

아니

이 정보는 변경 없이 clinicaltrials.gov 웹사이트에서 직접 가져온 것입니다. 귀하의 연구 세부 정보를 변경, 제거 또는 업데이트하도록 요청하는 경우 register@clinicaltrials.gov. 문의하십시오. 변경 사항이 clinicaltrials.gov에 구현되는 즉시 저희 웹사이트에도 자동으로 업데이트됩니다. .

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