ClinicalTrials.gg
WithdrawnNCT05387798Updated Oct 6, 2022

A Phase 3 Extension Study of RAD011 (Cannabidiol Oral Solution) in Patients With Prader-Willi Syndrome

A Phase 3 interventional study of RAD011 in Prader-Willi Syndrome, sponsored by Radius Pharmaceuticals, Inc.. Withdrawn. Open to participants aged 8 Years to 65 Years. Per ClinicalTrials.gov, last updated 2022-10-06.

Sponsored by Radius Pharmaceuticals, Inc. · Phase 3, Interventional, and Treatment

Why this study was withdrawn
Program terminated
Phase
Phase 3
Study type
Interventional
Enrollment
0
Allocation
Not applicable
Ages
8 Years to 65 Years
Sex
All
01

Study summary

This is a Phase 3 open-label extension (OLE) study in patients diagnosed with Prader-Willi Syndrome (PWS) who completed the Maintenance Period of the randomized, placebo-controlled Phase 2/3 study SCOUT-015.

The primary objective of this study is to assess the long-term safety and tolerability of RAD011.

02

Conditions studied

  • Prader-Willi Syndrome

Browse trials for

03

In context

Prader-Willi Syndrome

144 studies on the registry are indexed under Prader-Willi Syndrome; 23 are open to participants now.

Browse Prader-Willi Syndrome studies →

Lead sponsor

Radius Pharmaceuticals, Inc. is the lead sponsor of 9 studies on the registry; none are open to participants now.

Of its 7 completed or terminated interventional studies of FDA-regulated products, 7 (100%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
8 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Presence of a parent/legal guardian that is able to consent for their participation. Parent/caregiver/legal guardian can complete the required assessments throughout the study. Patient Consent/Assent will be obtained if the patient is 8 years of age or older and has the mental capacity to understand and sign a written consent/assent form and/or give verbal assent;
  • Patient completed treatment on the SCOUT-015 study through Visit 14 (Week 34);
  • If female, is either not of (defined as premenarchal or surgically sterile [bilateral tubal ligation, bilateral oophorectomy, or hysterectomy]) or practicing one of the following medically acceptable methods of up to 4 weeks after the last dose of

RAD011 or placebo:

Exclusion criteria

Exclusion Criteria:

  • Significant acute condition (active infection, uncontrolled diabetes, any other uncontrolled chronic condition) including but not limited to laboratory abnormality, or medical or psychosocial condition that may preclude the patient from participating in the study, at the Investigator's discretion;
  • Positive urine test for drugs of abuse, including tetrahydrocannabinol (THC), or known history of drug, alcohol, or substance abuse;
  • Significant risk of committing suicide based on history, psychiatric examination, or based on the Investigator's judgment;
  • Significant non-compliance issues (IP misuse or abuse, study visit participation, etc.) during the patient's SCOUT-015 participation based on the Investigator's judgement.
  • Pregnant (determined by a positive urine pregnancy test) or lactating female;
  • Concurrent participation in any other interventional study involving an product, gene therapy, or device.
Terms in these criteria, in plain language(4)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
0 participants (actual)

Study arms

  • Experimental
    RAD011

    Drug: RAD011

Interventions

  • DrugRAD011

    Cannabidiol Oral Solution (containing synthetic cannabidiol)

06

What researchers measure

Primary outcomes

  1. Assess the safety of RAD011 by evaluating the incidence and severity of adverse events reported

    Safety analyses will be conducted in all subjects who receive at least one dose of RAD011

    Time frame: Baseline through Week 52

07

Study locations

No study locations are listed for this record.

08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 6, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT05387798
Lead sponsor
Radius Pharmaceuticals, Inc.
Responsible party
Sponsor
First posted
May 24, 2022
Start date
Jan 2023 (estimated)
Primary completion
Aug 2025 (estimated)
Completion
Aug 2025 (estimated)
Last update
Oct 6, 2022

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is withdrawn, as verified in Oct 2022. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion