- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04007601
Neurostimulation In Adult Survivors of Childhood Acute Lymphoblastic Leukemia (ALL)
Long-term survivors of ALL are at-risk for neurocognitive impairment, particularly in the area of executive functioning. Relatively limited research has focused on interventions for improving neurocognitive outcomes in long-term survivors of ALL. A promising technique for cognitive enhancement is Transcranial Direct Current Stimulation (tDCS) which differs from conventional cognitive remediation approaches in that it directly stimulates specific brain regions responsible for cognitive processes and activates functional networks similar to those activated during cognitive training.
Primary Objective
To evaluate the efficacy of home-based transcranial direct current stimulation (tDCS) paired with remote cognitive training on direct testing of executive function in survivors of ALL.
Secondary Objectives
- To evaluate the efficacy of home-based transcranial direct current stimulation (tDCS) paired with remote cognitive training on patient-reported symptoms of executive dysfunction in survivors of ALL.
- To examine the effects of home-based tDCS paired with remote cognitive training on patterns of regional brain activation as measured by functional magnetic resonance imaging.
- To examine the effects of home-based tDCS paired with remote cognitive training on white matter integrity and structure as measured by diffusion tensor imaging.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Tara Brinkman, PhD
- Phone Number: 866-278-5833
- Email: referralinfo@stjude.org
Study Locations
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Tennessee
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Memphis, Tennessee, United States, 38105
- St. Jude Children's Research Hospital
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Completed treatment for acute lymphoblastic leukemia (ALL) at SJCRH < 21 years at diagnosis
- Enrolled on St. Jude Lifetime Cohort Study
- ≥ 5 years post-diagnosis of ALL
- ≥ 2 years post-treatment completion deemed to impact the central nervous system.
- Currently between 18 and 39 years of age
- English language proficiency
- Executive dysfunction defined as having an age-adjusted standard score <16th percentile on Trail Making Test Part B, Controlled Oral Word association Test, or Digit Span Backward
- Patient-reported executive dysfunction defined as a standard score >84th percentile on the Childhood Cancer Survivor Study Neurocognitive Questionnaire or the Behavior Rating Scale of Executive Function
Exclusion Criteria:
- Full scale intelligence score <80
- Currently taking medication intended to treat neurocognitive impairment (e.g. stimulants)
- Participated in a past trial of neurostimulation
- Female who is pregnant or breastfeeding
- History of seizures within the past year
- Implanted medical devices or metal in the head
- History of head injury or a neurodevelopmental disorder (i.e. genetic disorder, hypoxic-ischemic encephalopathy) associated with neurocognitive impairment and unrelated to cancer treatment
- Currently receiving cancer directed therapy
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Supportive Care
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Quadruple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Active Comparator: Active tDCS
Remotely delivered active tDCS + cognitive training
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Participants will receive active 1mA direct current stimulation over the left dorsolateral prefrontal cortex for 20 minutes.
Cognitive training: Participants will complete 20 minutes of online cognitive training via Lumosity two days per week for a 6-month intervention period.
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Placebo Comparator: Sham tDCS
Remotely delivered sham tDCS + cognitive training
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Participants will receive sham (no direct current) stimulation over the left dorsolateral prefrontal cortex for 20 minutes.
Cognitive training: Participants will complete 20 minutes of online cognitive training via Lumosity two days per week for a 6-month intervention period.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Direct Testing of Executive Function: Change in Working Memory from baseline to 6 months
Time Frame: Baseline & 6-month follow-up
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Digit Span Backward: Digit Span Backward (DSB), from the Digit Span subtest on the WAIS-IV, is a measure of working memory.
The number of digits recalled in the longest span is converted to a standard z-score using age-based norms (Mean=0, SD=1).
|
Baseline & 6-month follow-up
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Direct Testing of Executive Function: Change in Cognitive Flexibility in baseline to 6 months
Time Frame: Baseline & 6-month follow-up
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Trail Making Test Part B (Trails B): This is a timed task that requires a participant to shift his/her attention adaptively and flexibly.
Age-based standardized z-scores are calculated (Mean=0, SD=1).
|
Baseline & 6-month follow-up
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Direct Testing of Executive Function: Change in Verbal Fluency from baseline to 6 months
Time Frame: Baseline & 6-month follow-up
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Controlled Oral Word Association (COWA): This is a task of cognitive/verbal fluency that measures spontaneous production of words beginning with a designated letter or category.
Age-based standardized z-scores are calculated (Mean=0, SD=1).
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Baseline & 6-month follow-up
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in Patient-Reported Symptoms of Executive Functioning from baseline to 6 months
Time Frame: Baseline and 6-month follow-up
|
Patient reported symptoms of executive dysfunction will be evaluated via the Childhood Cancer Survivor Study Neurocognitive Questionnaire (CCSS-NCQ).
The CCSS-NCQ is a 32-item questionnaire evaluating 4 domains of executive function.
Z-scores (M=0, SD=1) are calculated using sibling data from the Childhood Cancer Survivor Study.
|
Baseline and 6-month follow-up
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Change in Patient-Reported Symptoms of Executive Functioning from baseline to 6 months
Time Frame: Baseline and 6-month follow-up
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Patient reported symptoms of executive dysfunction will be evaluated via the Behavior Rating Inventory for Executive Function - Adult Version (BRIEF-A).
The BRIEF-A is a 75-item measure of executive function that provides age- and sex-specific national normative data for nine domains of executive function (T-Score, M=50, SD=10).
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Baseline and 6-month follow-up
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Change in Brain Connectivity from baseline to 6 months
Time Frame: Baseline and 6-month follow-up
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White connectivity will be measured via diffusion tensor imaging and resting state fMRI (rsFMRI).
The cortex will be parcellated into anatomical regions based on the high-resolution T1-weighted imaging using the FreeSurfer software (http://surfer.nmr.mgh.harvard.edu/).
Probabilistic fiber tracking will be performed for individual seed points within the gray matter/white matter surface for each parcellated cortical region to evaluate strength of the connectivity between each individual region and every other region.
The current project will focus analyses on the frontostriatal connections from the DLPFC to the striatum.
rsfMRI data will be used to construct functional connectomes for each participant at each time point.
We will measure several common connectome properties including global and local efficiency.
Connectome modularity, degree distribution, and hub characteristics will also be measured.
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Baseline and 6-month follow-up
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Change in Regional Brian Activation from baseline to 6 months
Time Frame: Baseline and 6-month follow-up
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Regional brain activation will be assessed using an N-Back Task.
This task requires a participant to respond to a presented stimulus only when it is the same as one presented on a trial at a predetermined number prior to the current trial.
For this study, we plan to use 1-back and 2-back trials.
Improved efficiency will be defined as reduced activation in dorsolateral prefrontal cortex during performance on the N-Back task during the fMRI.
Using Statistical Parametric Mapping software (SPM12, Wellcome Trust Centre for Neuroimaging, London), contrast-images from the fixed-effect analysis in each subject will be used for second level random-effect analysis to create group activation maps.
These contrasts include pre- v. post-intervention imaging during the N-back task.
Participants assigned to active stimulation will then be contrasted to those assigned to sham stimulation.
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Baseline and 6-month follow-up
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Collaborators and Investigators
Collaborators
Investigators
- Principal Investigator: Tara Brinkman, Phd, St. Jude Children's Research Hospital
Publications and helpful links
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- NEUROSTIM
- R01CA239630 (U.S. NIH Grant/Contract)
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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