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Completed

NCT Number: NCT06372197

Low-Income Group Psilocybin Assisted Therapy for Depression

Due to psilocybin-assisted therapy's success in previous research, growing cultural awareness and use of psilocybin and other psychedelics, the Oregon Psilocybin Services Act passed by ballot measure in 2020 and began offering services in 2023. While the program has had many successes, a significant problem it faces is affordability and no research to date has investigated the therapy in a low-income population.

Psychedelic research in recent decades has used the model of two therapists to one client to demonstrate an abundance of caution and safety to regulators, but no evidence has demonstrated this model to be safer or more effective than one with less practitioner oversight. This feasibility study would be the first investigation of Oregon Psilocybin Services as a model of care and among the first few to use a group therapy model. This study aims to test the feasibility of the model by assessing recruitment, retention, acceptability and safety of the treatment. In addition to an appropriate medical screening and intake the following questionnaire data will be collected: the Adverse Childhood Events (ACE) questionnaire, Credibility/Expectancy Questionnaire (CEQ), Hamilton Depression Inventory, PROMIS-29, Altered States of Consciousness (11-ASC) rating scale, and a survey and structured interview.

Participants will consist of adults in Oregon with an income at or below 200% of the federal poverty level. Inclusion criteria will include DSM-5 diagnosis of major depression. Participants will be individually screened by a study investigator and placed into groups of five to six participants. Treatment will consist of two group preparation sessions, two psilocybin sessions, and two group integration sessions. An additional follow-up visit to collect further data will take place three months after conclusion of the treatment.

The proposed study will provide valuable information for designing future clinical trials investigating the efficacy, mechanisms, and cost-effectiveness of psilocybin-assisted group therapy for depression in low-income populations.

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Key information

Conditions

Depression Behavior Behavioral Symptoms

Age range

21 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

National University of Natural Medicine

Portland, Oregon, 97201, United States

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Oregon resident - this is due to the use of telehealth services and licenses of the study clinicians and their scope of practice within the state.
  • Age 21 or older - Oregon Psilocybin Services Act sets the minimum eligible age of 21.
  • Income 200% or below the Federal Poverty Line - this is the criteria for Oregon Medicaid (OHP).
  • DSM-5 diagnosis of Major Depression Disorder.
  • Current engagement with psychotherapy - no less than six therapy sessions in the previous six months and an intention to continue seeing their therapist no less than once every two weeks during the study period. This is to ensure participants have adequate psychological support during the study period. Participants must be willing to sign a release of information allowing study clinicians to communicate with their therapists.
  • At least six months of stable housing history.
  • Able to attend all study events.
  • Able to read and speak fluent English.

Exclusion criteria

  • A personal or family history of an immediate family member of schizophrenia, psychosis of any kind, mania, or hypomania.
  • A current prescription for lithium.
  • Active suicidal ideations or history of suicide attempts. Passive ideation, such as "I wouldn't mind if I never woke up again" is permissible.
  • Uncontrolled hypertension.
  • Any form of personality disorder.

Treatment and study plan

Psilocybin

Drug

Following Oregon Psilocybin Services (OPS) rules, participants will be placed in cohorts of five to six, which whom they will do two 90-minute preparation session, two psilocybin sessions, and two 90-minute integration sessions. All sessions will be guided by two licensed facilitators.

Primary outcomes

  1. Recruitment Feasibility

    Time frame: Beginning at study approval and funding through full enrollment, up to 18 months

    Determine the recruitment rate (number of participants enrolled compared to those approached) for low-income adults with depression into a group psilocybin-assisted therapy program.

  2. Retention Feasibility

    Time frame: From participant enrollment through follow-up, up to 18 months

    Evaluate the participant retention rate throughout the study, including psilocybin sessions and follow-up assessments.

  3. Acceptability

    Time frame: Assessed at the three month follow-up visit after completion of intervention

    Assess participant satisfaction with the group psilocybin-assisted therapy format through qualitative interviews and survey, including "On a scale of 0 to 5, zero being very dissatisfied and 5 being very satisfied, how would you rate your satisfaction with the treatment overall?"

  4. Preliminary Safety and Tolerability: incidence and severity of adverse events

    Time frame: Through study completion, up to 18 months

    The incidence and severity of adverse events associated with psilocybin administration in a group setting will be documented and reported on to assess safety and tolerability.

Other outcomes

  1. Patient-Reported Outcomes Measurement Information System (PROMIS-29)

    Time frame: Baseline (enrollment), integration #1 (3rd week of treatment), integration #2 (4th week of treatment), and follow-up (3 months post-treatment)

    Patient-Reported Outcomes Measurement Information System provides metrics for seven health related domains including depression.

  2. Altered State of Consciousness rating scale (11-ASC)

    Time frame: At the end of both psilocybin sessions (week 3 and week 4).

    Provides a rating of intensity of altered state experiences across eleven domains.

  3. Hamilton Depression Inventory

    Time frame: Baseline (enrollment), integration #1 (3rd week of treatment), integration #2 (4th week of treatment), and follow-up (3 months post-treatment)

    Provides a rating of depressive symptoms across several subdomains.

Sponsors and collaborators

Lead sponsor

Matthew Hicks

Other

Registry information

Official study title

Low-Income Group Psilocybin Assisted Therapy for Depression: A Feasibility Study

Acronym: LIGPATD

Important dates

Study start
2024
Primary completion
2025
Study completion
2025
First posted
Apr 17, 2024
Registry last updated
Jun 5, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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