Study of Trofinetide for the Treatment of Girls and Women With Rett Syndrome (LAVENDER™)

April 5, 2024 updated by: ACADIA Pharmaceuticals Inc.

A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Study of Trofinetide for the Treatment of Girls and Women With Rett Syndrome

To investigate the efficacy of treatment with oral trofinetide versus placebo in females with Rett syndrome

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
187

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Alabama
      • Birmingham, Alabama, United States, 35233
        • University of Alabama at Birmingham
    • Arizona
      • Phoenix, Arizona, United States, 85012
        • Translational Gemomics Research Institute (TGen)
    • California
      • La Jolla, California, United States, 92093
        • University of California, San Diego
      • Sacramento, California, United States, 95817
        • Uc Davis Mind Institute
    • Colorado
      • Aurora, Colorado, United States, 80042
        • Children's Hospital Colorado
    • Florida
      • Tampa, Florida, United States, 33606
        • Children Medical Services
    • Georgia
      • Atlanta, Georgia, United States, 30322
        • Emory Genetics Clinical Trial Center
    • Illinois
      • Chicago, Illinois, United States, 60612
        • Rush University Children's Hospital
    • Maryland
      • Baltimore, Maryland, United States, 21205
        • Kennedy Krieger Institute - Clinical Trials Unit
    • Massachusetts
      • Boston, Massachusetts, United States, 02115
        • Boston Children's Hospital Harvard Medical School
    • Minnesota
      • Saint Paul, Minnesota, United States, 55101
        • Gillette Children's Specialty Healthcare
    • Missouri
      • Saint Louis, Missouri, United States, 63110
        • Washington University School of Medicine
    • New York
      • Bronx, New York, United States, 10467
        • Montefiore Medical Center, Children's Hospital at Montefiore
    • North Carolina
      • Chapel Hill, North Carolina, United States, 27599
        • The University of North Carolina at Chapel Hill
    • Ohio
      • Cincinnati, Ohio, United States, 45229
        • Cincinnati Children's Hospital Medical Center
      • Cleveland, Ohio, United States, 44195
        • Cleveland Clinic
    • Pennsylvania
      • Philadelphia, Pennsylvania, United States, 19104
        • Children's Hospital of Philadelphia
    • South Carolina
      • Greenwood, South Carolina, United States, 29646
        • Greenwood Genetic Center
    • Tennessee
      • Nashville, Tennessee, United States, 37232
        • Vanderbilt University Medical Center
    • Texas
      • Houston, Texas, United States, 77030
        • Texas Children's Hospital
    • Washington
      • Seattle, Washington, United States, 98105
        • Seattle Children's

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

5 years to 20 years (Child, Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Female subjects 5 to 20 years of age, inclusive, at Screening
  2. Body weight ≥12 kg at Screening
  3. Can swallow the study medication provided as a liquid solution or can take it by gastrostomy tube
  4. Has classic/typical Rett syndrome (RTT)
  5. Has a documented disease-causing mutation in the MECP2 gene
  6. Has a stable pattern of seizures, or has had no seizures, within 8 weeks of Screening
  7. Subjects of childbearing potential must abstain from sexual activity for the duration of the study and for at least 30 days thereafter or must agree to use acceptable methods of contraception. Subject must not be pregnant or breastfeeding.
  8. The subject's caregiver is English-speaking and has sufficient language skills to complete the caregiver assessments
  9. Subject and caregiver(s) must reside at a location to which study drug can be delivered and have been at their present residence for at least 3 months prior to Screening

Exclusion Criteria:

  1. Has been treated with insulin within 12 weeks of Baseline
  2. Has current clinically significant cardiovascular, endocrine (such as hypo- or hyperthyroidism, Type 1 diabetes mellitus, or uncontrolled Type 2 diabetes mellitus), renal, hepatic, respiratory or gastrointestinal disease (such as celiac disease or inflammatory bowel disease) or has major surgery planned during the study
  3. Has a history of, or current, cerebrovascular disease or brain trauma
  4. Has significant, uncorrected visual or uncorrected hearing impairment
  5. Has a history of, or current, malignancy
  6. Has a known history or symptoms of long QT syndrome

Additional inclusion/exclusion criteria apply. Patients will be evaluated at screening to ensure that all criteria for study participation are met. Patients may be excluded from the study based on these assessments (and specifically, if it is determined that their baseline health and condition do not meet all pre-specified entry criteria).

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Drug - Trofinetide
Trofinetide solution of 30-60 mL based on the subject's weight at Baseline, administered twice daily by mouth or gastrostomy tube (G-tube)
Drug: Trofinetide
Trofinetide solution administered based on the subject's weight at Baseline, twice daily for 12 weeks
Placebo Comparator: Placebo
Trofinetide placebo solution of 30-60 mL based on the subject's weight at Baseline, administered twice daily by mouth or gastrostomy tube (G-tube)
Other: Placebo
Trofinetide placebo solution administered based on the subject's weight at Baseline, twice daily for 12 weeks

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Clinical Global Impression-Improvement (CGI-I) Score at Week 12
Time Frame: 12 Weeks Treatment Duration
To rate how much the subject's illness has improved or worsened relative to a baseline state, a 7-point scale is used from 1=very much improved, 2=much improved, 3=minimally improved, 4=no change, 5=minimally worse, 6=much worse, 7=very much worse.
12 Weeks Treatment Duration
Rett Syndrome Behaviour Questionnaire (RSBQ) Total Score - Change From Baseline to Week 12
Time Frame: Baseline and Week 12
The RSBQ is a 45-item caregiver-completed rating scale that includes 45 items, 39 of them grouped into 8 subscales, whose ratings reflect the severity and frequency of symptoms. Items are rated as 0 (not true), 1 (somewhat or sometimes true), or 2 (very true). The 8 subscales are general mood, breathing problems, hand behavior, face movements, body rocking/expressionless face, night-time behaviors, fear/anxiety, and walking/standing. Scores for item 31 are reversed in the calculation of the total score. The total score ranges from 0 to 90 and is calculated as the sum of the item scores. Higher scores mean worse behaviour.
Baseline and Week 12

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Change From Baseline to Week 12 in Communication and Symbolic Behavior Scales Developmental Profile™ Infant-Toddler Checklist - Social Composite Score (CSBS-DP-IT Social)
Time Frame: 12 Weeks Treatment Duration
Standardized screening scale for assessing communication and pre-linguistic skills in young children 12-24 months and can be used with older children with developmental delay. The CSBS-DP includes a suite of three separate measures: The Infant-Toddler Checklist, a follow-up Caregiver Questionnaire and a Behavior Sample. In this study only the Infant-Toddler (CSBS-DP-IT) Checklist was used. The CSBS-DP-IT Checklist is a 24-item rating scale and each item is scored using a three-level rating of frequency: "not yet", "sometimes" and "often". The CSBS-DP-IT Social Composite score the range was 0 to 26 and a higher score represented a worse outcome. Three composite scores can be calculated: 1) Social Composite; 2) Speech Composite; 3) Symbolic Composite.
12 Weeks Treatment Duration
Change From Baseline to Week 12 in Impact of Childhood Neurologic Disability Scale (ICND) Total Score
Time Frame: 12 Weeks Treatment Duration
The Impact of Childhood Neurologic Disability (ICND) scale evaluates the effect of four conditions or health problems on 11 aspects of a child's or family's life as "A lot", "Some", "A little", "Not at all", or "Does not apply". The four conditions or health problems are 1) inattentiveness, impulsivity, or mood, 2) ability to think and remember, 3) neurologic or physical limitations, and 4) epilepsy. The ICND score the range of 0 to 132 and a higher score represents a worse outcome.
12 Weeks Treatment Duration
Change From Baseline to Week 12 in Rett Syndrome Clinician Rating of Hand Function (RTT-HF)
Time Frame: 12 Weeks Treatment Duration
Clinical assessment of the subject's ability to use their hands for functional purposes (such as reaching for and grasping objects, self-feeding, or drawing). The assessment is made on an 8-point Likert scale (0-7) with 0 denoting normal functioning and 7 the most severe impairment.
12 Weeks Treatment Duration
Change From Baseline to Week 12 in Rett Syndrome Clinician Rating of Ambulation and Gross Motor Skills (RTT-AMB)
Time Frame: 12 Weeks Treatment Duration
Clinical assessment of the subject's ability to sit, stand, and ambulate (e.g., walking, running, and climbing stairs). The assessment was made on an 8-point Likert scale (0 to 7), with 0 denoting normal functioning and 7 as the most severe impairment.
12 Weeks Treatment Duration
Change From Baseline to Week 12 in Rett Syndrome Clinician Rating of Ability to Communicate Choices (RTT-COMC)
Time Frame: 12 Weeks Treatment Duration
Clinical assessment of the subject's ability to communicate their choices or preferences, which can include the use of nonverbal means such as eye contact or gestures. The assessment is made on an 8-point Likert scale (0-7) with 0 denoting normal functioning and 7 the most severe impairment.
12 Weeks Treatment Duration
Change From Baseline to Week 12 in Rett Syndrome Clinician Rating of Verbal Communication (RTT-VCOM)
Time Frame: 12 Weeks Treatment Duration
Clinical assessment of the subject's ability to communicate verbally (e.g. words and phrases). The assessment is made on an 8-point Likert scale (0-7) with 0 denoting normal functioning and 7 the most severe impairment.
12 Weeks Treatment Duration
Change From Baseline to Week 12 in Clinical Global Impression-Severity (CGI-S)
Time Frame: 12 Weeks Treatment Duration
A 7 point scale that rates the severity of the subject's illness at the time of assessment, relative to the clinician's experience with subjects who have the same diagnosis. A subject is assessed on severity of illness at the time of rating: 1, normal, not at all ill; 2, borderline ill; 3, mildly ill; 4, moderately ill; 5, markedly ill; 6, severely ill; or 7, extremely ill.
12 Weeks Treatment Duration
Change From Baseline to Week 12 in Rett Syndrome Caregiver Burden Inventory (RTT-CBI) Total Score (Items 1-24)
Time Frame: 12 Weeks Treatment Duration
The Rett Syndrome Caregiver Burden Inventory (RTT-CBI) scale is intended to directly address caregiver burden and indirectly assess the significance of treatment effects on function in the context of activities of daily living. Ratings are on a 5-point Likert scale including: 0-never; 1-rarely; 2-sometimes; 3-frequently and 4-nearly always. As in the original Caregiver Burden Inventory, the RTT-CBI has 24 negatively worded items (items 1 through 24) yielding a total score up to 96. The RTT-CBI the range is 0 to 96 and a higher score represents a worse outcome.
12 Weeks Treatment Duration
Change From Baseline to Week 12 in Overall Quality of Life Rating of the Impact of Childhood Neurologic Disability Scale (ICND)
Time Frame: 12 Weeks Treatment Duration
The overall quality of life of the subject is also rated by responding to the following: "Please rate your child's overall 'Quality of Life' on the scale below. Choose the number which you feel is best and circle it." The choices range from 1 ("Poor") to 6 ("Excellent").
12 Weeks Treatment Duration

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
ACADIA Pharmaceuticals Inc.

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
November 6, 2019

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
October 28, 2021

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
October 28, 2021

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 26, 2019

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 26, 2019

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
November 29, 2019

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
April 8, 2024

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 5, 2024

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
April 1, 2024

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • ACP-2566-003

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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