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RECOVER-NEURO: Platform Protocol to Measure the Effects of Cognitive Dysfunction Interventions on Long COVID Symptoms

RECOVER-NEURO: A Platform Protocol for Evaluation of Interventions for Cognitive Dysfunction in Post-Acute Sequelae of SARS-CoV-2 Infection (PASC)

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05965752
Enrollment
328
Registered
2023-07-28
Start date
2023-09-01
Completion date
2024-06-10
Last updated
2025-07-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Long COVID, Long COVID-19, Long COVID19

Keywords

PASC, Cognitive

Brief summary

This platform protocol is designed to be flexible so that it is suitable for a wide range of settings within health care systems, for remote settings, and in community settings where it can be integrated into COVID-19 programs and subsequent treatment plans. This protocol is a prospective, multi-center, multi-arm, randomized, controlled platform trial evaluating potential interventions for PASC-mediated cognitive dysfunction. The hypothesis is that PASC associated dysfunction in cognitive domains, such as executive function and attention, may be improved by interventions that selectively focus on enhancing those domains.

Detailed description

Participants will be randomized to one of the intervention appendices that are actively enrolling at the time of randomization. Intervention appendices may be added or removed according to adaptive design and/or emerging evidence. Various interventions will be studied.

Interventions

BrainHQ platform provides a set of cognitive activities, like puzzles and games, that are cognitively stimulating and actively engage participants but do not continuously and adaptively challenge them. These activities are designed to be a face-valid, active comparison approach to cognitive therapy, thus participants are blinded, attention time is matched, and overall user experience is identical to the active arms.

OTHERBrainHQ

BrainHQ is an online cognitive training program, and has been used to improve cognitive function among persons with cognitive impairment based on principles of neuroplasticity.

PASC CoRE is a manualized, adaptable cognitive rehabilitation intervention adapted from Goal Management Training and other evidence based programs that improve attention and executive functions, among other cognitive domains.

Transcranial direct current stimulation (tDCS) will use a device specifically for home-based use. This device delivers a weak electrical current of 2.0 mA passed through two electrodes placed on the scalp to target the dorsolateral prefrontal cortex region of the brain. The electrodes are single-use for each session and can be attached to a headset by snapping into place. The device has a user-friendly interface and a large-button keypad, making it is easy to use at home.

DEVICEtDCS-sham

tDCS devices used in the sham arm will be pre-programmed to deliver the same ramp up/down at the beginning/end of the 30-minute period as the active arm, except with no current otherwise delivered during the session.

Sponsors

Duke University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Caregiver, Investigator)

Masking description

Participants assigned to active comparator will be considered part of pooled analyses if the intervention was active at the time of the participant's enrollment and the participants were eligible to receive that intervention. This will result in approximately a 1:1 allocation ratio for any intervention to pooled control. Sites will be informed to which intervention appendix participants are randomized, but, when applicable, not whether the participants are allocated to the active intervention arm or active comparator arm within that appendix. The participants and investigators will be blinded throughout the study, when possible. If open intervention appendices do not have the ability to pool controls but have independent controls, at the second stage participants will be randomized in a 1:1 ratio to intervention vs active comparator inside the specific intervention appendix the participants were randomized to at the first stage of the randomization procedure.

Intervention model description

To achieve blinding and an equitable randomization probability, a two-step randomization process will be used. The study will employ a simple (unstratified) randomization scheme. At the first stage, each participant will be assigned with equal probability to one of the intervention appendices for which the participant is eligible, after applying any intervention-specific safety exclusions. At the second stage, each participant will be assigned according to the specific appendix's randomization procedure. Participants will have an equal chance of being randomized into any of the intervention groups.

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

In order to be eligible to participate in this study, an individual must meet all of the following criteria: 1. ≥ 18 years of age at the time of enrollment 2. PROMIS-Cog T-score \< 40 3. Previous suspected, probable, or confirmed SARS-CoV-2 infection, as defined by the Pan American Health Organization Suspected case of SARS-CoV-2 infection - three options, A through C: A. Met clinical OR epidemiological criteria: a. Clinical criteria: Acute onset of fever AND cough (influenza-like illness) OR Acute onset of ANY THREE OR MORE of the following signs or symptoms: fever, cough, general, weakness/fatigue, headache, myalgia, sore throat, coryza, dyspnea, nausea, diarrhea, anorexia; b. Epidemiological criteria: Contact of a probable or confirmed case or linked to a COVID-19 cluster; B. Presented acute respiratory infection with history of fever or measured fever of ≥ 38°C and cough, with onset within the last 10 days, and who requires hospitalization; or C. Presented with no clinical signs or symptoms, NOR meeting epidemiologic criteria with a positive professional use or self-test SARS-CoV-2 Antigen-Rapid Diagnostic Test. Probable case of SARS-CoV-2 infection, defined as having met clinical criteria above AND was a contact of a probable or confirmed case or was linked to a COVID-19 cluster. Confirmed case of SARS-CoV-2 infection - two options, A through B: A. Presented with a positive nucleic acid amplification test, regardless of clinical criteria OR epidemiological criteria; or B. Met clinical AND/OR epidemiological criteria (See suspected case A.a.), with a positive professional use or self-test SARS-CoV-2 Antigen-Rapid Diagnostic Test. \* Suspected and probable cases will only be allowed if they occurred before May 1, 2021, and will be limited to 10% of the study population. Otherwise, confirmed cases are required. 4. Cognitive dysfunction symptoms following a SARS-CoV-2 infection that have persisted for at least 12 weeks and are still present at the time of consent 5. Fluent in English or Spanish language 6. Willing and able to provide informed consent, complete the intervention, complete the intervention assessments, and return for all of the necessary follow-up visits

Exclusion criteria

An individual who meets any of the following criteria will be excluded from participation in this study: 1. Prior or active unstable or progressive major psychiatric or neurologic condition that would not show improvement and could hide treatment effect and is not related to SARS-CoV-2 infection, at the investigator's discretion, including, but not limited to, the following examples: a. Progressive neurodegenerative disease, such as Alzheimer's disease, Parkinson's disease, etc. b. Past traumatic brain injury occurrence still associated with active post-concussive symptoms c. Uncontrolled seizure disorder, such as having at least one seizure in the last year that is adjudicated by clinical judgement d. Post-stroke deficits that may interfere with assessment, such as language or communication difficulties, aphasia, etc. e. Formal thought disorders, such as schizophrenia, etc. f. Any neuropsychiatric or neurologic disorder uncontrolled for the previous six months or that may interfere with assessment, at discretion of the investigator 2. Known prior diagnosis of myalgic encephalomyelitis/chronic fatigue syndrome, not related to SARS-CoV-2 infection 3. Known active acute SARS-CoV-2 infection ≤ 4 weeks from consent 4. Current use of symptomatic therapies including prescribed or illicit stimulants, amantadine, N-methyl-D-aspartate receptor antagonists (e.g., memantine, dissociative drugs) 5. Current use of a stimulant for treating any PASC-related symptom 6. Current diagnosis of alcohol and substance use disorders a. Prior use disorders acceptable if abstinence achieved and maintained for at least 12 months before study enrollment 7. Insufficient visual, auditory, and motor function to participate in intervention and assessments 8. Known pregnancy 9. Current or recent use (within the last 2 months) of intervention\* 10. Known allergy/sensitivity/hypersensitivity to components of the intervention or comparator\* 11. Currently receiving/using intervention from another clinical trial, such as another RECOVER trial 12. Any condition that would make the participant, in the opinion of the investigator, unsuitable for the study 1. The site investigator has the discretion to determine whether a participant is too cognitively impaired to participate and should instead be referred for clinical evaluation. Exclusions specific to intervention appendices are listed in each appendix. \* Relevant if only one intervention appendix is open at the time of enrollment, though exclusion may be qualified in the appendix. If multiple intervention appendices are open, a participant may be excluded from any intervention appendix based on contraindications listed in the intervention appendix, current use of intervention, or known allergy/sensitivity/hypersensitivity and still remain eligible for the remaining intervention appendices.

Design outcomes

Primary

MeasureTime frameDescription
Total Number of Participants Enrolled in Each Appendix160 DaysAppendix-specific outcome measure data will be reported under the associated NCT ID.

Countries

United States

Participant flow

Participants by arm

ArmCount
BrainHQ Active Comparator
5 sessions/week at 30 min/session BrainHQ/Active Comparator Activity: BrainHQ platform provides a set of cognitive activities, like puzzles and games, that are cognitively stimulating and actively engage participants but do not continuously and adaptively challenge them. These activities are designed to be a face-valid, active comparison approach to cognitive therapy, thus participants are blinded, attention time is matched, and overall user experience is identical to the active arms.
64
BrainHQ
5 sessions/week at 30 min/session BrainHQ: BrainHQ is an online cognitive training program, and has been used to improve cognitive function among persons with cognitive impairment based on principles of neuroplasticity.
67
BrainHQ + PASC CoRE
BrainHQ plus 9 group sessions at 1.5 hr/session and 3 individual sessions at 30 min/session BrainHQ: BrainHQ is an online cognitive training program, and has been used to improve cognitive function among persons with cognitive impairment based on principles of neuroplasticity. PASC CoRE: PASC CoRE is a manualized, adaptable cognitive rehabilitation intervention adapted from Goal Management Training and other evidence based programs that improve attention and executive functions, among other cognitive domains.
66
Brain HQ + tDCS-active
2.0 mA stimulation delivered for 30 min during each BrainHQ session BrainHQ: BrainHQ is an online cognitive training program, and has been used to improve cognitive function among persons with cognitive impairment based on principles of neuroplasticity. tDCS-active: Transcranial direct current stimulation (tDCS) will use a device specifically for home-based use. This device delivers a weak electrical current of 2.0 mA passed through two electrodes placed on the scalp to target the dorsolateral prefrontal cortex region of the brain. The electrodes are single-use for each session and can be attached to a headset by snapping into place. The device has a user-friendly interface and a large-button keypad, making it is easy to use at home.
66
Brain HQ + tDCS-sham
Inactive stimulation delivered for 30 min during each BrainHQ session BrainHQ: BrainHQ is an online cognitive training program, and has been used to improve cognitive function among persons with cognitive impairment based on principles of neuroplasticity. tDCS-sham: tDCS devices used in the sham arm will be pre-programmed to deliver the same ramp up/down at the beginning/end of the 30-minute period as the active arm, except with no current otherwise delivered during the session.
65
Total328

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004
Overall StudyAdverse Event01013
Overall StudyDid Not Want to be Randomized to Intervention00001
Overall StudyDisease Relapse10100
Overall StudyEarly Termination00100
Overall StudyFailure to Meet Randomization Criteria01010
Overall StudyLost to Follow-up20111
Overall StudyReported Unwanted Symptoms00001
Overall StudyUnable to Return for Study Visits01031
Overall StudyWithdrawal by Subject22150

Baseline characteristics

CharacteristicBrain HQ + tDCS-shamTotalBrainHQ Active ComparatorBrainHQBrainHQ + PASC CoREBrain HQ + tDCS-active
Age, Continuous49.0 years48.0 years44.5 years49.0 years53.0 years47.0 years
Ethnicity (NIH/OMB)
Hispanic or Latino
14 Participants52 Participants6 Participants12 Participants9 Participants11 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
51 Participants274 Participants57 Participants55 Participants56 Participants55 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants2 Participants1 Participants0 Participants1 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants4 Participants1 Participants2 Participants1 Participants0 Participants
Race (NIH/OMB)
Asian
3 Participants15 Participants2 Participants2 Participants6 Participants2 Participants
Race (NIH/OMB)
Black or African American
12 Participants47 Participants6 Participants12 Participants7 Participants10 Participants
Race (NIH/OMB)
More than one race
2 Participants15 Participants5 Participants3 Participants2 Participants3 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants1 Participants1 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
5 Participants11 Participants2 Participants2 Participants1 Participants1 Participants
Race (NIH/OMB)
White
43 Participants235 Participants47 Participants46 Participants49 Participants50 Participants
Region of Enrollment
United States
65 Participants328 Participants64 Participants67 Participants66 Participants66 Participants
Sex: Female, Male
Female
45 Participants241 Participants52 Participants49 Participants49 Participants46 Participants
Sex: Female, Male
Male
20 Participants87 Participants12 Participants18 Participants17 Participants20 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
deaths
Total, all-cause mortality
0 / 640 / 670 / 660 / 660 / 65
other
Total, other adverse events
0 / 00 / 00 / 00 / 00 / 0
serious
Total, serious adverse events
0 / 00 / 00 / 00 / 00 / 0

Outcome results

Primary

Total Number of Participants Enrolled in Each Appendix

Appendix-specific outcome measure data will be reported under the associated NCT ID.

Time frame: 160 Days

Population: Enrolled participants.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
BrainHQ Active ComparatorTotal Number of Participants Enrolled in Each Appendix64 Participants
BrainHQTotal Number of Participants Enrolled in Each Appendix67 Participants
BrainHQ + PASC CoRETotal Number of Participants Enrolled in Each Appendix66 Participants
Brain HQ + tDCS-activeTotal Number of Participants Enrolled in Each Appendix66 Participants
Brain HQ + tDCS-shamTotal Number of Participants Enrolled in Each Appendix65 Participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026