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Pivotal Study of VNS During Rehab After Stroke (VNS-REHAB) (VNS-REHAB)

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ClinicalTrials.gov Identifier: NCT03131960
Recruitment Status : Recruiting
First Posted : April 27, 2017
Last Update Posted : April 26, 2018
Sponsor:
Collaborator:
ResearchPoint Global
Information provided by (Responsible Party):
MicroTransponder Inc.

Tracking Information
First Submitted Date  ICMJE April 24, 2017
First Posted Date  ICMJE April 27, 2017
Last Update Posted Date April 26, 2018
Actual Study Start Date  ICMJE July 1, 2017
Estimated Primary Completion Date June 30, 2019   (Final data collection date for primary outcome measure)
Current Primary Outcome Measures  ICMJE
 (submitted: April 24, 2017)
Fugl-Meyer Assessment, Upper Limb (FM-A) [ Time Frame: V5, One day after 6-weeks of therapy ]
FM-A 1-day
Original Primary Outcome Measures  ICMJE Same as current
Change History Complete list of historical versions of study NCT03131960 on ClinicalTrials.gov Archive Site
Current Secondary Outcome Measures  ICMJE
 (submitted: April 24, 2017)
  • Fugl-Meyer Assessment, Upper Limb (FM-A) [ Time Frame: V7, 90 days after 6-weeks of therapy ]
    FM-A 90-day
  • Fugl-Meyer Assessment, Upper Limb (FM-A) Response [ Time Frame: V7, 90 days after 6-weeks of therapy ]
    FM-A Response
  • Wolf Motor Function Test [ Time Frame: V7, 90 days after 6-weeks of therapy ]
    WMFT 90-day
Original Secondary Outcome Measures  ICMJE Same as current
Current Other Pre-specified Outcome Measures Not Provided
Original Other Pre-specified Outcome Measures Not Provided
 
Descriptive Information
Brief Title  ICMJE Pivotal Study of VNS During Rehab After Stroke (VNS-REHAB)
Official Title  ICMJE A Pivotal Randomized Study Assessing Vagus Nerve Stimulation (VNS) During Rehabilitation for Improved Upper Limb Motor Function After Stroke (VNS-REHAB)
Brief Summary This is a pivotal phase study of up to 120 subjects and 15 clinical sites. All subjects are implanted with the Vivistim System® and then randomized to either study treatment or active-control treatment. The randomization will be stratified by age (<30, >30) and baseline FMA UE (20 to <35; >35 to 50). Study treatment is vagus nerve stimulation (VNS) delivered during rehabilitation. Active control treatment is rehabilitation (standard-of-care treatment) with only a minimal amount of VNS at the start of each session intended to support blinding.
Detailed Description

This study has three distinct stages: Stage I, an acute blinded stage, Stage II, an unblinded stage through one year of standard VNS, and Stage III, an unblinded stage for yearly follow-up after one year of VNS. The Control group crosses over to VNS treatment at Stage II.

For Stage I, subjects have:

  • consent and evaluation (screening),
  • one pre-implant evaluation,
  • surgical implant of the device system and randomization into one of the treatment arms,
  • one baseline evaluation after device implant surgery but before initiation of treatment,
  • 6 weeks of treatment (standard-of-care rehabilitation + standard VNS or standard-of-care rehabilitation + active control VNS), and then
  • post-acute therapy evaluations at 1, 30 and 90 days after the 6 weeks of treatment.
  • Between Day 1 (V5) and Day 30 (V6) post-acute therapy, both groups will receive in-home, self-directed rehabilitation (30 minutes of daily rehabilitation as assigned by the therapist) with either in-home activated VNS (VNS group) or no VNS (Control group). This means that the control subjects will not have the in-home activated VNS until they complete the second 6-week session of in-clinic rehabilitation with follow-up assessments as described below in Stage II. At this point (Day 30) subjects start scheduling for their continuing long-term follow-up.
  • Between Day 30 and Day 90 post-acute therapy, both groups continue in-home, self-directed rehabilitation (30 minutes of daily rehabilitation as assigned by the therapist). The VNS group continues to receive in-home VNS with magnet use; the Control group continues to use the magnet but does not receive any VNS. The Day 90 post-acute therapy visit is V7; it is the first quarterly visit (3 months after study therapy) for the VNS group and is the re-baseline visit (visit just prior to the initiation of standard VNS therapy) for the Control group.

Stage II:

  • VNS subjects will continue to have quarterly assessments through the end of the first year (6m, 9m, 12m).
  • Subjects in the control group will crossover for a second 6-week in-clinic rehabilitation period where they will now receive rehabilitation with standard VNS.
  • Control subjects will then have the three post therapy assessments (1, 30 and 90 days after therapy ends); in-home VNS initiated by a magnet swipe starts at the Post-1 visit (LT1). Thereafter, control subjects will follow the same schedule as VNS subjects for the remainder of the study (6m, 9m, 12m follow-ups, plus yearly visits thereafter).
  • Subjects in both groups will receive "booster" in-clinic rehabilitation plus VNS therapy sessions one month prior to their 6- and 12-month assessment visits. These sessions occur on three days over a one-week period (typically Mon, Wed, Fri).

Stage III:

• After one year of standard VNS therapy (~13.5 months after implant for VNS group subjects and ~18 months after implant for Control group subjects), subjects who wish to keep their device for further use will have annual follow-up assessments until commercial approval.

Study Type  ICMJE Interventional
Study Phase  ICMJE Not Applicable
Study Design  ICMJE Allocation: Randomized
Intervention Model: Parallel Assignment
Intervention Model Description:
Double blind, randomized, parallel study with partial crossover (control subjects crossover to treatment after randomized portion)
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Masking Description:
Participants, therapists (care providers), investigators, and outcomes assessors do not know which group (VNS or control VNS) the patients are randomized. Only one person at the site - the programmer who programs the device settings - knows which group the subject is randomized into.
Primary Purpose: Treatment
Condition  ICMJE
  • Cerebrovascular Stroke
  • Upper Extremity Paresis
Intervention  ICMJE
  • Device: Paired Vagus Nerve Stimulation
    Stimulation of the vagus nerve that is paired with upper limb rehabilitation movements.
  • Other: Rehabilitation
    Rehabilitation movements to improve upper limb function after stroke
Study Arms  ICMJE
  • Experimental: VNS + Rehabilitation (1)
    Study treatment is vagus nerve stimulation (VNS) delivered during rehabilitation.
    Interventions:
    • Device: Paired Vagus Nerve Stimulation
    • Other: Rehabilitation
  • Active Comparator: Control VNS
    Active control treatment is rehabilitation (standard-of-care treatment) with only a minimal amount of VNS at the start of each session intended to support blinding.
    Intervention: Other: Rehabilitation
Publications *

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Recruitment Information
Recruitment Status  ICMJE Recruiting
Estimated Enrollment  ICMJE
 (submitted: April 24, 2017)
120
Original Estimated Enrollment  ICMJE Same as current
Estimated Study Completion Date  ICMJE June 30, 2021
Estimated Primary Completion Date June 30, 2019   (Final data collection date for primary outcome measure)
Eligibility Criteria  ICMJE

Inclusion Criteria:

  1. History of unilateral supratentorial ischemic stroke that occurred at least 9 months but not more than ten 10 years prior to enrollment.
  2. Age >22 years and <80 years.
  3. FMA-UE score of 20 to 50 (inclusive of 20 and 50).
  4. Ability to communicate, understand, and give appropriate consent. Subjects should be able to follow two-step commands.
  5. Right- or left-sided weakness of upper extremity.
  6. Active wrist flexion/extension; active abduction/extension of thumb and at least two additional digits.

Exclusion Criteria:

  1. History of hemorrhagic stroke
  2. Presence of ongoing dysphagia or aspiration difficulties.
  3. Subject receiving medication that may significantly interfere with the actions of VNS on neurotransmitter systems at study entry. A list of excluded medications will be provided to Investigators.
  4. Prior injury to vagus nerve, either bilateral or unilateral (e.g., injury during carotid endarterectomy).
  5. Severe or worse depression (Beck Depression Scale > 29) (Beck et al., 1961)
  6. Unfavorable candidacy for device implant surgery (e.g., history of adverse reactions to anesthetics, poor surgical candidate in surgeon's opinion, etc.)
  7. Current use of any other stimulation device, such as a pacemaker or other neurostimulator; current use of any other investigational device or drug.
  8. Medical or mental instability (diagnosis of personality disorder, psychosis, or substance abuse) that would prevent subject from meeting protocol timeline.
  9. Pregnancy or plans to become pregnant or to breastfeed during the study period.
  10. Current requirement, or likely future requirement, of diathermy during the study duration.
  11. Active rehabilitation within 4 weeks prior to consent.
  12. Botox injections or any other non-study active rehabilitation of the upper extremity within 4 weeks prior to therapy through the post-30 day visit (Visit 6).
  13. Severe spasticity of the upper limb (Modified Ashworth ≥3) (Bohannon and Smith, 1987).
  14. Significant sensory loss. Sensory loss will be measured using the Upper Extremity sensory section of the Fugl Meyer Assessment of Physical Performance. The assessment addresses light touch (2 items) and proprioception (4 items).The highest points attained is 12; subjects with scores less than 6 will be excluded from the study.
Sex/Gender  ICMJE
Sexes Eligible for Study: All
Ages  ICMJE 22 Years to 80 Years   (Adult, Older Adult)
Accepts Healthy Volunteers  ICMJE No
Contacts  ICMJE
Contact: Brent Tarver, BSEE 512-371-4160 brent@microtransponder.com
Contact: Sue Lesly, BS 512-371-4160
Listed Location Countries  ICMJE United Kingdom,   United States
Removed Location Countries  
 
Administrative Information
NCT Number  ICMJE NCT03131960
Other Study ID Numbers  ICMJE MT-St-03
Has Data Monitoring Committee Yes
U.S. FDA-regulated Product
Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: Yes
Device Product Not Approved or Cleared by U.S. FDA: Yes
Pediatric Postmarket Surveillance of a Device Product: No
IPD Sharing Statement  ICMJE
Plan to Share IPD: No
Responsible Party MicroTransponder Inc.
Study Sponsor  ICMJE MicroTransponder Inc.
Collaborators  ICMJE ResearchPoint Global
Investigators  ICMJE Not Provided
PRS Account MicroTransponder Inc.
Verification Date April 2018

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP