NCT06643988

Brief Summary

The research study is being conducted to better understand memory function in people with opioid use disorder (OUD) and whether memory training can improve the symptoms and lives of people with OUD. Further, this study seeks to identify how brain and heart activity contribute to memory function and OUD symptoms. Participants will be asked to complete a baseline assessment, four weeks of at-home memory training (MemFlex), and a post-treatment follow-up assessment. Everyone enrolled will receive MemFlex as there is no placebo group. Each visit will include collection of a urine sample for drug testing. During the baseline and follow-up assessments, researchers will collect brain information using functional near-infrared spectroscopy (fNIRS) and heartbeat data using a wearable wristband sensor. MemFlex is a cognitive-behavioral intervention that does not pose any risk. However, the use of MemFlex in this study is experimental as it has not been tested in individuals with OUD. We will enroll 20 participants with OUD and 10 participants meeting healthy volunteer criteria.

Trial Health

77
On Track

Trial Health Score

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

Enrollment
30

participants targeted

Target at below P25 for not_applicable

Timeline
1mo left

Started Aug 2025

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
recruiting

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

Trial Relationships

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Study Timeline

Key milestones and dates

Study Progress97%
Aug 2025Jun 2026

First Submitted

Initial submission to the registry

October 14, 2024

Completed
2 days until next milestone

First Posted

Study publicly available on registry

October 16, 2024

Completed
10 months until next milestone

Study Start

First participant enrolled

August 19, 2025

Completed
9 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

May 1, 2026

Completed
1 month until next milestone

Study Completion

Last participant's last visit for all outcomes

June 1, 2026

Expected
Last Updated

August 29, 2025

Status Verified

August 1, 2025

Enrollment Period

9 months

First QC Date

October 14, 2024

Last Update Submit

August 28, 2025

Conditions

Outcome Measures

Primary Outcomes (1)

  • Autobiographical Memory (AM) Recall (AMT-AI)

    Specificity \[specific vs. general\] and valence \[positive, negative, neutral\] and PFC activity during AM recall.The AMT-AI outcomes will be the proportion of specific AMs in each condition (neutral, positive, negative) and mean ΔHbO in the mPFC and dlPFC (separately) during AM recall relative to the control block.

    Pre and Post treatment assessment (weeks 1 and 5)

Study Arms (2)

Healthy controls

NO INTERVENTION

Participants who meet criteria as healthy volunteers, will receive no MemFlex training but will undergo assessments as well as fNIRS computerized tasks.

OUD

EXPERIMENTAL

Participants who meet criteria for OUD and are on a stable dose of medication assisted therapy for OUD will be trained in memory flexibility training (MemFlex) - cognitive training exercises.

Behavioral: MemFlex

Interventions

MemFlexBEHAVIORAL

MemFlex employs cognitive training exercises in self-led sessions to improve 1) switching between specific and general AMs, 2) access to positive AMs, and 3) vividness of positive AMs.

OUD

Eligibility Criteria

Age18 Years - 60 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Age 18 years to 60 years old.
  • Willingness to provide signed, informed consent and commit to completing study procedures
  • Subjects must be willing and able to comply with scheduled visits, treatment plan, laboratory tests, and other study procedures, and must have access to a cellphone.
  • OUD subjects: Lifetime self-reported history of OUD (according to DSM-5 criteria)
  • OUD subjects: On a stable dose (at least 2 weeks without change) of MOUD (e.g., buprenorphine, methadone) as confirmed by self-report, urine drug screening, and/or the Prescription Drug Monitoring Program database.
  • OUD subjects: Access to a stable residence or space to complete the at-home treatment module

You may not qualify if:

  • Current severe psychiatric (e.g., bipolar disorder) or physical (e.g., dementia, Parkinson's disease) determined by self-reported history or physical exam and disorder deemed by PI to significantly interfere with brain function or make the study hazardous for the subject.
  • Head trauma or injury deemed by PI as likely to impact the prefrontal cortex (e.g., loss of consciousness for more than 30 minutes or skull fracture, intracranial bleeding, or abnormal MRI) as determined by self-reported history or physical exam.
  • Medical condition or medical treatment that may interfere with the subject's ability to complete the intervention, at discretion of the PI (e.g., extended surgery planned or expecting to give birth during the course of the study)
  • Inability to sit upright while remaining relatively still and operating a mouse and keypad.
  • Current ongoing participation in a research study or participation in a clinical trial and receipt of investigational drug(s) or intervention during 30 days prior to the research study, except as explicitly approved by the Principal Investigator.
  • Currently prescribed opioid medication for treatment of pain or other disorder (besides opioid use disorder).
  • OUD subjects: Past 1-year history of non-OUD substance use disorder (other than nicotine, alcohol, or cannabis use disorders).
  • OUD subjects: Positive urine drug screen for any tested substances except for opioids, cocaine, and cannabis at screening or the baseline assessment visit (a test may be repeated if it is needed to confirm accuracy).
  • HC subjects: Lifetime history of any substance use disorder (other than nicotine use disorder at any time and alcohol or cannabis use disorders more than 1 year ago).
  • HC subjects: Positive urine drug screen for any tested substances at screening or the baseline assessment visit (a test may be repeated if it is needed to confirm accuracy).

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of Pennsylvania

Philadelphia, Pennsylvania, 19104, United States

RECRUITING

MeSH Terms

Conditions

Opioid-Related Disorders

Condition Hierarchy (Ancestors)

Narcotic-Related DisordersSubstance-Related DisordersChemically-Induced DisordersMental Disorders

Central Study Contacts

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NON RANDOMIZED
Masking
NONE
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

October 14, 2024

First Posted

October 16, 2024

Study Start

August 19, 2025

Primary Completion

May 1, 2026

Study Completion (Estimated)

June 1, 2026

Last Updated

August 29, 2025

Record last verified: 2025-08

Data Sharing

IPD Sharing
Will not share

Locations