NCT01640158

Brief Summary

The primary objective of this study is to evaluate the effects of plasticity-based, adaptive cognitive remediation on the cognitive abilities, functional status and quality of life of soldiers and veterans diagnosed with persistent post-concussive symptoms (PPCS) following a mild traumatic brain injury (mTBI, also referred to as a concussion, or blast exposure), as compared to a computer-based control.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
86

participants targeted

Target at P50-P75 for not_applicable

Timeline
Completed

Started Sep 2013

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

July 10, 2012

Completed
3 days until next milestone

First Posted

Study publicly available on registry

July 13, 2012

Completed
1.1 years until next milestone

Study Start

First participant enrolled

September 1, 2013

Completed
3.5 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

March 2, 2017

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

March 2, 2017

Completed
Last Updated

April 16, 2019

Status Verified

April 1, 2019

Enrollment Period

3.5 years

First QC Date

July 10, 2012

Last Update Submit

April 11, 2019

Conditions

Keywords

mild Traumatic Brain InjuryCognitive remediationcomputer

Outcome Measures

Primary Outcomes (2)

  • Change in Cognitive Function

    Between-group magnitude of change in composite score with the measure constructed from Rey Auditory Verbal Learning Test (RAVLT) sum of trials 1-5 (immediate verbal memory), RAVLT delayed verbal recall, the Ruff Light Trails Test (RULIT) sum of trials 2-10 (immediate visual memory), RULIT delayed recall scores, digit span (WAIS, sum of forwards, backwards, sequencing), symbol span (WMS), anti-saccades, flanker, and set-shifting (each from the EXAMINER battery).

    After three months of training

  • Change in Functional Performance

    Between-group magnitude of change in sum time of all tasks in the Timed Instrumental Activities of Daily Living (TIADL). Higher scores indicate greater impairment in functional performance.

    After three months of training

Secondary Outcomes (18)

  • Change in Mental Health-Related Quality of Life

    After three months of training and 3 months after training completion

  • Change in Physical Health-Related Quality of Life

    After three months of training and 3 months after training completion

  • Change in Depressive Symptoms

    After three months of training and 3 months after training completion

  • Change in PTSD Symptoms

    After three months of training and 3 months after training completion

  • Change in Executive Function Symptoms

    After three months of training and 3 months after training completion

  • +13 more secondary outcomes

Study Arms (2)

Experimental Treatment

EXPERIMENTAL

Computerized plasticity-based adaptive cognitive training, up to 65 hours

Other: Computerized Plasticity-based Adaptive Cognitive Training

Active Comparator

ACTIVE COMPARATOR

Commercially available computerized training, up to 65 hours

Other: Commercially available computerized training

Interventions

Computerized plasticity-based adaptive cognitive training, up to 65 hours

Experimental Treatment

Commercially available computerized training, up to 65 hours

Active Comparator

Eligibility Criteria

Age18 Years - 50 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64)

You may qualify if:

  • Subjects must be 18 - 50 years of age at the time of consent
  • Subjects must have a diagnosis of mTBI
  • Subjects must have persistent cognitive dysfunction confirmed by an objective measure (as recommended by the ICD-10 definition for post-concussion syndrome) or a subjective measure (as recommended by the DSV-IV definition of post-concussional disorder).
  • Subjects must be at least three months out from their most recent TBI, concussion, and/or blast exposure to minimize the effects of spontaneous recovery, as verified through participant interview.
  • Subjects must be fluent English speakers.
  • Subjects must have adequate sensorimotor capacity to perform the program in the judgment of the consenting clinician.

You may not qualify if:

  • Subjects must not have a history of penetrating head wounds or a diagnosis of moderate or severe TBI.
  • Subjects must not be in-patients.
  • Subjects must not have a diagnosis of an illness or condition with known cognitive consequences (e.g., schizophrenia, bipolar disorder, cancer, multiple sclerosis).
  • Subjects must not show suicidal ideation as measured by the Columbia-Suicide Severity Rating Scale (C-SSRS).
  • Subjects must now show signs of intoxication due to current substance abuse (including alcohol and/or illegal drugs) during any in person visit.
  • Subjects must not have clinically significant visual field deficits noted by the consenting staff member by direct observation or by medical history.
  • Subjects must not be judged to be lacking effort.
  • Subjects must not have problems performing assessments or comprehending or following spoken instructions.
  • Subjects must not be enrolled in a concurrent clinical trial involving an investigational pharmaceutical, nutraceutical, medical device, or behavioral treatment for TBI that could affect the outcome of this study.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Posit Science Corporation

San Francisco, California, 94108, United States

Location

Related Publications (1)

  • Consensus conference. Rehabilitation of persons with traumatic brain injury. NIH Consensus Development Panel on Rehabilitation of Persons With Traumatic Brain Injury. JAMA. 1999 Sep 8;282(10):974-83.

    PMID: 10485684BACKGROUND

MeSH Terms

Conditions

Brain Injuries, TraumaticBrain Concussion

Condition Hierarchy (Ancestors)

Brain InjuriesBrain DiseasesCentral Nervous System DiseasesNervous System DiseasesCraniocerebral TraumaTrauma, Nervous SystemWounds and InjuriesHead Injuries, ClosedWounds, Nonpenetrating

Study Officials

  • Henry W Mahncke, PhD

    Posit Science Corporation

    PRINCIPAL INVESTIGATOR
  • Cate N Stasio, BA

    Posit Science Corporation

    STUDY DIRECTOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

July 10, 2012

First Posted

July 13, 2012

Study Start

September 1, 2013

Primary Completion

March 2, 2017

Study Completion

March 2, 2017

Last Updated

April 16, 2019

Record last verified: 2019-04

Locations