Prader-Willi SyndromePhase 4NCT04066088
Dose Clinical Trial of Guanfacine Extended Release for the Reduction of Aggression and Self-injuries Behavior Associated With Prader-Willi Syndrome
A Phase 4 study testing Guanfacine extended release (GXR) in people with Prader-Willi Syndrome, run by NYU Langone Health at 1 site in United States.
Trial summary
This is a placebo-controlled clinical trial to assess the utility of Guanfacine Extended Release (GXR) in the management of patients with Prader Willi Syndrome (PWS) who have significant aggression or self-injury. The purpose of this trial is to establish the safety of GXR with a specific focus on metabolic effects. Read more about this study
- Who is it for?
- Ages 6 to 35 years
- Conditions the study is for
- Prader-Willi Syndrome
- What is being tested?
- Guanfacine extended release (GXR)
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 0 participants
- Where
- 1 siteUnited States
- Study dates
- 1 Dec 2019to 21 Aug 2020
- Phase
- Phase 4
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 6 to 35 years
- All sexes
- No healthy volunteers
- Child, Adult
Who may be able to join
- 6 and 35 years of age
- diagnosis of PWS confirmed by genetic testing.
- rating of moderate or above on the Clinical Global Impression- Severity Scale will be required for entry.
Who cannot join
- Subjects with a positive pregnancy test, swallowing difficulty, and/or presenting with active psychosis or mania will be excluded.
- Individuals with pre-existing, clinically significant bradycardia (< 8 years: <64 bpm; 8 to 12 years: <59 bpm; 12 to 16 years: <53 bpm) or hypotension, defined as 5th percentile for height and gender,26 will be excluded from the study.
- Subjects receiving antipsychotic medications due to a documented history of psychosis or bipolar disorder will be allowed to continue taking the medication without dosage modification.
- Growth hormone, thyroid hormone replacement treatment, and non-psychiatric medicines will be allowed to continue.
- N-Acetyl Cysteine and anticonvulsant medication (only if prescribed for seizures) will be allowed to continue, with specific instructions to not make any dosage changes during the clinical trial.
Trial locations and contacts
1 site in 1 country.
About this study
This is a placebo-controlled clinical trial to assess the utility of Guanfacine Extended Release (GXR) in the management of patients with Prader Willi Syndrome (PWS) who have significant aggression or self-injury. The purpose of this trial is to establish the safety of GXR with a specific focus on metabolic effects.
Read the detailed description
Prader-Willi syndrome is a genetic disorder due to loss of function of specific genes. In newborns, symptoms include weak muscles, poor feeding, and slow development. Beginning in childhood, the person becomes constantly hungry, which often leads to obesity and type 2 diabetes. Also, mild to moderate learning disability and behavioral problems are typical.
Guanfacine Extended Release (GXR), the investigational drug in this study would be the first study to evaluate the drug in patients with Prader Willi Syndrome. "Investigational" means it is not approved by the Food and Drug Administration (FDA) to treat Prader Willi Syndrome. However, Guanfacine Extended Released (GXR) is an FDA approved drug used to treat children and adolescents with hypertension and attention deficit hyperactivity disorder (ADHD). GXR is thought to respond to parts of the brain that lead to strengthening working memory, reducing distraction, improving attention and impulse control. GXR is generally considered safe for children as long as it is used according to the dosing instructions (up to 4mg) of a qualified medical professional.
- Conditions
- Prader-Willi Syndrome
- Being tested
- Placebo, Guanfacine extended release (GXR)
- Medical subject headings
- Prader-Willi Syndrome
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
PlaceboOther
Placebo will be administered same times as GXR
Guanfacine extended release (GXR)Drug
The starting dose for all subjects will be 1 mg per day. If the medication is well-tolerated, the dose can be raised to 2 mg until day 28 and increased to 3mg for the remaining 4 weeks in the trial. The dose schedule will not be fixed; the treating clinician can delay a planned increase or lower the dose to manage adverse effects. At week 8, the study will be unblinded and subjects will continue treatment for 8 more weeks.
| Study group | Role | What they receive |
|---|---|---|
| Placebo | Sham comparator | Not described Receives: Other: Placebo |
| GXR | Experimental | Immediately following the 8-week blinded randomized trial, an 8-week open-label continuation phase will be pursued to further define efficacy and tolerability of GXR, and to establish its safety with specific focus on metabolic profile. Receives: Drug: Guanfacine extended release (GXR) |
What is being measured
The primary outcome is the main question the study is designed to answer.
CGI-I scale rating
A positive clinical response will be determined by a rating of 1 or 2 (Very much/Much improved) on the CGI-I scale at the end of the blinded trial.
Measured: 19 Weeks
Secondary outcomes (3)
Aberrant Behavior Checklist
Consists of 2 subscales; irritability (15 items) and hyperactivity/noncompliance (16 items).
Measured: 19 Weeks
Self-Injury Trauma scale
SHI scores of 5 or greater were found to be indicative of borderline personality disorder. Part 1 is ranking based on the number of wounds 1=one would (common in a mild SIB but rare in a severe case) 2=two or four wounds (common) and 3=five or more wounds (rare). Injury severity is scored on a subjective basis with labels such as "mild" "moderate" and "severe" accompanied by descriptions of the observed state of the anatomy. Part 3 is the Estimate of Current Risk.
Measured: 19 Weeks
Modified Overt Aggression Scale
four-part behavior rating scale used to evaluate and document the "frequency and severity" of aggressive episodes.[1] The rating scale is made up of four categories; verbal aggression, aggression against objects, aggression against self, and aggression against others
Measured: 19 Weeks
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted26 Aug 2019
- Study start1 Dec 2019
- Primary completion21 Aug 2020
- Study completion21 Aug 2020
Why it stopped: PI departure from institution
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Prader-Willi SyndromeStudies of the same condition, open and under way.
- More trials run by NYU Langone HealthThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 4
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Double blind
- Who is masked
- Participant, Investigator
- Enrolment
- 0 participants (actual)
Sponsor and investigators
- Lead sponsor
- NYU Langone Health
- Sponsor type
- University, hospital or other
- Collaborators
- Winthrop University Hospital
- Responsible party
- Sponsor
- Investigators
- Deepan Singh, MD, Principal investigator, New York Langone Health
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04066088
- Sponsor's protocol ID
- 19-00936
- Status last verified
- Aug 2020
- First submitted
- 21 Aug 2019
- Last updated
- 26 Aug 2020
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 26 Aug 2020. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Dose Clinical Trial of Guanfacine Extended Release for the Reduction of Aggression and Self-injuries Behavior Associated With Prader-Willi Syndrome
- ClinicalTrials.gov ID
- NCT04066088
- Acronym / sponsor ID
- 19-00936
- Conditions
- Prader-Willi Syndrome
- Phase
- Phase 4
- Study type
- Interventional
- Recruitment status
- WithdrawnReason stopped: PI departure from institution
- Enrolment
- 0 participants (actual)
- Lead sponsor
- NYU Langone HealthUniversity, hospital or other
- Collaborators
- Winthrop University Hospital
- Study start
- 1 Dec 2019 (actual)
- Primary completion
- 21 Aug 2020 (actual)
- Study completion
- 21 Aug 2020 (actual)
- First posted
- 26 Aug 2019 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This is a placebo-controlled clinical trial to assess the utility of Guanfacine Extended Release (GXR) in the management of patients with Prader Willi Syndrome (PWS) who have significant aggression or self-injury. The purpose of this trial is to establish the safety of GXR with a specific focus on metabolic effects.
Detailed description
Prader-Willi syndrome is a genetic disorder due to loss of function of specific genes. In newborns, symptoms include weak muscles, poor feeding, and slow development. Beginning in childhood, the person becomes constantly hungry, which often leads to obesity and type 2 diabetes. Also, mild to moderate learning disability and behavioral problems are typical.
Guanfacine Extended Release (GXR), the investigational drug in this study would be the first study to evaluate the drug in patients with Prader Willi Syndrome. "Investigational" means it is not approved by the Food and Drug Administration (FDA) to treat Prader Willi Syndrome. However, Guanfacine Extended Released (GXR) is an FDA approved drug used to treat children and adolescents with hypertension and attention deficit hyperactivity disorder (ADHD). GXR is thought to respond to parts of the brain that lead to strengthening working memory, reducing distraction, improving attention and impulse control. GXR is generally considered safe for children as long as it is used according to the dosing instructions (up to 4mg) of a qualified medical professional.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Double blind (participant, investigator)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Placebo | Sham comparator | Other: Placebo |
| GXR | Experimental | Drug: Guanfacine extended release (GXR)Immediately following the 8-week blinded randomized trial, an 8-week open-label continuation phase will be pursued to further define efficacy and tolerability of GXR, and to establish its safety with specific focus on metabolic profile. |
Who may qualify
- Ages
- 6 to 35 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult
Key inclusion criteria (3 listed)
- 6 and 35 years of age
- diagnosis of PWS confirmed by genetic testing.
- rating of moderate or above on the Clinical Global Impression- Severity Scale will be required for entry.
Key exclusion criteria (5 listed)
- Subjects with a positive pregnancy test, swallowing difficulty, and/or presenting with active psychosis or mania will be excluded.
- Individuals with pre-existing, clinically significant bradycardia (< 8 years: <64 bpm; 8 to 12 years: <59 bpm; 12 to 16 years: <53 bpm) or hypotension, defined as 5th percentile for height and gender,26 will be excluded from the study.
- Subjects receiving antipsychotic medications due to a documented history of psychosis or bipolar disorder will be allowed to continue taking the medication without dosage modification.
- Growth hormone, thyroid hormone replacement treatment, and non-psychiatric medicines will be allowed to continue.
- N-Acetyl Cysteine and anticonvulsant medication (only if prescribed for seizures) will be allowed to continue, with specific instructions to not make any dosage changes during the clinical trial.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| PlaceboPlacebo will be administered same times as GXR | Other | Placebo |
| Guanfacine extended release (GXR)The starting dose for all subjects will be 1 mg per day. If the medication is well-tolerated, the dose can be raised to 2 mg until day 28 and increased to 3mg for the remaining 4 weeks in the trial. The dose schedule will not be fixed; the treating clinician can delay a planned increase or lower the dose to manage adverse effects. At week 8, the study will be unblinded and subjects will continue treatment for 8 more weeks. | Drug | GXR |
Primary outcome
CGI-I scale rating
Time frame: 19 Weeks
A positive clinical response will be determined by a rating of 1 or 2 (Very much/Much improved) on the CGI-I scale at the end of the blinded trial.
3 secondary outcomes
Aberrant Behavior Checklist
Time frame: 19 Weeks
Self-Injury Trauma scale
Time frame: 19 Weeks
Modified Overt Aggression Scale
Time frame: 19 Weeks
Results and safety
The study was withdrawn before enrolling participants, so there are no results.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 26 Aug 2020.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Deepan Singh, MD principal investigator
New York Langone Health
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 4 study testing Guanfacine extended release (GXR) in people with Prader-Willi Syndrome, run by NYU Langone Health at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: withdrawn, as of the sponsor's last update on 26 Aug 2020. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
The study was withdrawn before enrolling participants, so there are no results.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
CGI-I scale rating (time frame: 19 Weeks). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 26 Aug 2020; AzTrials last refreshed its copy on 8 Nov 2026.