NCT05776056

Brief Summary

Posttraumatic stress disorder (PTSD) is frequently accompanied by difficulty concentrating, poor memory, and inability to keep up with tasks, which negatively impacts a person's ability to function at work and in relationships. Currently available treatments do not fully relieve all symptoms. A published research report showed positive evidence that the stimulant medication methylphenidate was beneficial in treating these problems. This study will evaluate the ability of methylphenidate to treat PTSD and associated neurocognitive complaints in Veterans. An innovative feature is the study's N-of-1 design. In this design, every participant will move back and forth every 4-5 weeks between treatment with methylphenidate and treatment with placebo, in random order and under double-blind conditions, over a 20-week period. The investigators will compare the aggregated change in PTSD and neurocognitive symptoms between periods of treatment with methylphenidate versus placebo. Results will help clinicians to better choose the best treatment for Veterans living with PTSD.

Trial Health

77
On Track

Trial Health Score

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

Enrollment
70

participants targeted

Target at P25-P50 for phase_4

Timeline
11mo left

Started Feb 2024

Typical duration for phase_4

Geographic Reach
1 country

3 active sites

Status
recruiting

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

Study Progress72%
Feb 2024Mar 2027

First Submitted

Initial submission to the registry

March 8, 2023

Completed
12 days until next milestone

First Posted

Study publicly available on registry

March 20, 2023

Completed
11 months until next milestone

Study Start

First participant enrolled

February 5, 2024

Completed
2.4 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

July 6, 2026

Expected
9 months until next milestone

Study Completion

Last participant's last visit for all outcomes

March 31, 2027

Last Updated

January 9, 2026

Status Verified

January 1, 2026

Enrollment Period

2.4 years

First QC Date

March 8, 2023

Last Update Submit

January 7, 2026

Conditions

Keywords

PTSDPosttraumatic Stress DisorderADHDNeurocognitiveStimulantVeteranTraumatic Brain InjuryTBIMethylphenidate

Outcome Measures

Primary Outcomes (1)

  • PTSD Symptom Checklist for DSM-5 (PCL-5)

    PTSD Checklist for DSM-5 (PCL-5) is a 20-item self-report that assesses how much the participant was bothered by each DSM-5 symptoms of PTSD with a rating of 0 "not at all" to 4 "extremely;" summed score ranges from 0-80 with higher score indicating more severe symptoms.

    4 weeks

Secondary Outcomes (2)

  • Neuro-QoL Cognitive Function short form (NeuroQoL)

    4 weeks

  • Symbol Digit Coding (SDC)

    4 weeks

Study Arms (2)

N-of-1 crossover study enrollment: start with placebo

OTHER

All participants spend time receiving both active study drug (methylphenidate) and placebo (sham study drug), in randomized order, across 4 treatment blocks separated by 1 week washout periods (where no study drug is given).

Drug: MethylphenidateDrug: Placebo

N-of-1 crossover study enrollment: start with methylphenidate

OTHER

All participants spend time receiving both active study drug (methylphenidate) and placebo (sham study drug), in randomized order, across 4 treatment blocks separated by 1 week washout periods (where no study drug is given).

Drug: MethylphenidateDrug: Placebo

Interventions

An inactive pill (placebo) will be taken twice daily.

N-of-1 crossover study enrollment: start with methylphenidateN-of-1 crossover study enrollment: start with placebo

Methylphenidate 10mg will be taken twice daily.

Also known as: Ritalin
N-of-1 crossover study enrollment: start with methylphenidateN-of-1 crossover study enrollment: start with placebo

Eligibility Criteria

Age18 Years - 65 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Any gender Veteran of the US military between the ages of 18 and 65 years
  • Independent decision-making capacity to sign informed consent and HIPAA (i.e., no surrogate consent)
  • Diagnosis of PTSD defined by DSM-5 symptom count on CAPS-5
  • CAPS-5 past month total score greater than or equal to 26
  • Subjective neurocognitive impairment, defined as a total score of greater than or equal to 25 (1 standard deviation below the mean) on the NeuroQoL Cognitive Function 8-item self-report form.

You may not qualify if:

  • Diagnosis of DSM-5-defined bipolar I, schizophrenia spectrum or other psychotic disorders (by MINI)
  • Presence of severe psychotic symptoms such that, based on the clinical judgement of the investigator or treatment provider, treatment with an antipsychotic is required.
  • Diagnosis of moderate or severe substance use disorder (except for caffeine and nicotine) during the preceding 2 months. Patients who utilize alcohol or cannabis but do not meet criteria for moderate or severe disorder are permitted at the discretion of the investigator. Participants must agree to abstain from illicit drugs, including cannabis products containing THC even when legal by state law.
  • History of severe TBI as defined by the Ohio State University TBI Identification Method.
  • Diagnosis of dementia or related progressive neurocognitive disorder, based on clinical records.
  • Increased risk of suicide that necessitates inpatient treatment or treatment excluded by the protocol; and/or intensity of suicidal ideation (Type 4 or Type 5) or any suicidal behavior in the past 2 months on Columbia Suicide Severity Rating Scale (C-SSRS).
  • Pregnancy or lactation, or anticipated pregnancy at any point during study participation. Participants of child-bearing potential must have negative pregnancy test at study entry and must agree to adhere to a medically acceptable method of birth control (e.g., oral, implantable, injectable, or transdermal hormone-based contraceptives; intrauterine device; double-barrier method).
  • Use of any investigational drug, MPH formulation, antipsychotics, mood stabilizers, monoamine oxidase inhibitors, stimulants, atomoxetine, or bupropion within 2 weeks of baseline.
  • Treatment with evidence-based trauma-focused therapy for PTSD within 2 weeks of baseline (if participant is receiving therapy, he/she must complete treatment prior to entering study). Supportive psychotherapy may be continued during the study.
  • A clinically significant acute or uncontrolled chronic medical/surgical illness that would contraindicate use of MPH, or a known terminal illness.
  • Prior allergic reaction to any MPH formulation.
  • Litigating for compensation for a psychiatric disorder outside the Veterans benefits compensation and pension process.
  • Current enrollment in another interventional trial for PTSD.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (3)

Birmingham VA Medical Center, Birmingham, AL

Birmingham, Alabama, 35233-1927, United States

RECRUITING

Tuscaloosa VA Medical Center, Tuscaloosa, AL

Tuscaloosa, Alabama, 35404-5015, United States

RECRUITING

VA Puget Sound Health Care System Seattle Division, Seattle, WA

Seattle, Washington, 98108-1532, United States

RECRUITING

MeSH Terms

Conditions

Stress Disorders, Post-TraumaticAttention Deficit Disorder with HyperactivityBrain Injuries, Traumatic

Interventions

Methylphenidate

Condition Hierarchy (Ancestors)

Stress Disorders, TraumaticTrauma and Stressor Related DisordersMental DisordersAttention Deficit and Disruptive Behavior DisordersNeurodevelopmental DisordersBrain InjuriesBrain DiseasesCentral Nervous System DiseasesNervous System DiseasesCraniocerebral TraumaTrauma, Nervous SystemWounds and Injuries

Intervention Hierarchy (Ancestors)

PhenylacetatesAcids, CarbocyclicCarboxylic AcidsOrganic ChemicalsPiperidinesHeterocyclic Compounds, 1-RingHeterocyclic Compounds

Study Officials

  • Rebecca C. Hendrickson, MD PhD

    VA Puget Sound Health Care System Seattle Division, Seattle, WA

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Rebecca C Hendrickson, MD PhD

CONTACT

Carolyn L Fort, BS

CONTACT

Study Design

Study Type
interventional
Phase
phase 4
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Masking Details
Participant, investigator/study clinicians, and clinical assessors (raters) are blinded to study drug until study completion for each participant.
Purpose
TREATMENT
Intervention Model
CROSSOVER
Model Details: The study compares MPH (intervention) and PBO (control) using an aggregated N-of-1 trial design. N-of-1 clinical trials are multi-cycle, double-blinded, placebo-controlled cross-over trials based on an individual. In aggregated N-of-1 trials, data from a cohort of participants are analyzed together, often to test the efficacy of a treatment whilst controlling for the heterogeneity of response. Our design consists of 2 cycles, with each cycle including 4 weeks of MPH 10mg twice daily and 4 weeks of PBO twice daily, each followed by a 1-week washout. This provides a total of 8 weeks on active drug and 8 weeks on placebo. Order of MPH vs PBO within cycle is randomly assigned and double-blinded.
Sponsor Type
FED
Responsible Party
SPONSOR

Study Record Dates

First Submitted

March 8, 2023

First Posted

March 20, 2023

Study Start

February 5, 2024

Primary Completion (Estimated)

July 6, 2026

Study Completion (Estimated)

March 31, 2027

Last Updated

January 9, 2026

Record last verified: 2026-01

Data Sharing

IPD Sharing
Will not share

Locations