Clinical Trial Details
— Status: Withdrawn
Administrative data
NCT number |
NCT00979693 |
Other study ID # |
PCA1 |
Secondary ID |
|
Status |
Withdrawn |
Phase |
Phase 2
|
First received |
|
Last updated |
|
Start date |
January 2012 |
Est. completion date |
June 2013 |
Study information
Verified date |
December 2023 |
Source |
Multidisciplinary Association for Psychedelic Studies |
Contact |
n/a |
Is FDA regulated |
No |
Health authority |
|
Study type |
Interventional
|
Clinical Trial Summary
This study is to find out about whether two sessions of psilocybin-assisted psychotherapy are
safe and will help people who are anxious as a result of having stage IV melanoma and will
involve two sessions of psychotherapy combined with either 4 or 25 mg psilocybin. The study
will measure anxiety, depression, quality of life and spirituality before and after
psilocybin-assisted psychotherapy, natural killer cells (a type of immune cell) will be
counted from blood samples taken the day after psilocybin-assisted psychotherapy, and people
will keep daily diaries reporting on how anxious they feel for each day in the study.
Description:
Melanoma is a cancer arising from pigment-producing cells, or melanocytes. These cells are
chiefly located in the skin, but they can also be found in other parts of the body, including
eyes, ears and GI tract. A diagnosis of stage IV melanoma can create great stress and anxiety
for an individual and his or her caregivers. Psilocybin (4-phosphoryloxy-
N,N-dimethyl-tryptamine) is a psychedelic (hallucinogenic) compound found in certain species
of mushrooms that can produce spiritual or mystical experiences and that has been used in
psychotherapy prior to being made illegal. This study will be a randomized, active-placebo
controlled pilot study of the safety and efficacy of psilocybin-assisted psychotherapy as a
means of managing anxiety in association with stage IV melanoma. This study will examine
whether two sessions of psilocybin-assisted psychotherapy scheduled seen to 14 days apart
will reduce anxiety, improve quality of life and be safe in people with stage IV melanoma.
Subjects in this study will have a 66% chance of receiving the full dose of 25 mg psilocybin
and a 33% of receiving 4 mg psilocybin. The first dose is expected to change how people feel,
think and see the world, while the lower dose is expected to have only slight effects. Each
subject will receive these conditions at random, as if by coin-toss. The researchers,
including the therapists, and the subject will not know whether they are assigned to get 25
or 4 mg psilocybin.
The entire study can last up to three and a half months (14 weeks) but the main part of the
study lasts six weeks. After the researchers determine that a person with stage IV melanoma
and anxiety can be in the study, there will be two introductory psychotherapy sessions with
the therapist-investigators. They will prepare the participant for psilocybin-assisted
psychotherapy. The subject will have a day-long psilocybin-assisted psychotherapy session
after introductory sessions, and he or she will remain overnight at the clinic. There will be
a psychotherapy follow-up scheduled the day after each psilocybin-assisted session to help
people work with the psilocybin-assisted psychotherapy, and there will be a psychotherapy
session in between the first and second psilocybin-assisted psychotherapy sessions. Two weeks
after the second psilocybin-assisted psychotherapy session, subjects will return for another
follow-up visit. The subjects will answer questions or fill out questionnaires about anxiety,
depression, quality of life, spirituality and sense of self at the start of the study, two
weeks after the second psilocybin-assisted session and at least once during the study.
Subjects will have blood draws to assess liver function before each psilocybin-assisted
session and they will have a blood draw to assess natural killer (NK) cells the day after
each psilocybin-assisted session. On the day after each psilocybin-assisted session, subjects
will also complete a questionnaire about their experiences during the psilocybin-assisted
session.
Two weeks after the second experimental psilocybin-assisted session, subjects will learn if
they got the full or active placebo dose of psilocybin. Any of the three subjects who receive
the active placebo dose can take part in an "open-label" study phase that will last another
six weeks. The open-label phase will be nearly identical to those used in the first study
phase except that there will be one, and not two, introductory psychotherapy sessions, and
the subject and therapists will know that the subject will be receiving 25 mg psilocybin.
People who got the full dose of 25 mg psilocybin will not take part in the open-label study
phase.
If they are well enough to do so, subjects who received the full dose of psilocybin will have
anxiety, depression, quality of life and spirituality measured again two months after the
second experimental session. Subjects who received active placebo psilocybin will have
anxiety, depression, quality of life and spirituality measured two months after the second
open-label psilocybin-assisted session.