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Open-Label Extension Study of Trofinetide for the Treatment of Girls and Women With Rett Syndrome (LILAC™)

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ClinicalTrials.gov Identifier: NCT04279314
Recruitment Status : Enrolling by invitation
First Posted : February 21, 2020
Last Update Posted : September 20, 2021
Sponsor:
Information provided by (Responsible Party):
ACADIA Pharmaceuticals Inc.

Tracking Information
First Submitted Date  ICMJE February 19, 2020
First Posted Date  ICMJE February 21, 2020
Last Update Posted Date September 20, 2021
Actual Study Start Date  ICMJE January 29, 2020
Estimated Primary Completion Date October 2022   (Final data collection date for primary outcome measure)
Current Primary Outcome Measures  ICMJE
 (submitted: March 24, 2021)
  • Percentage of subjects with treatment-emergent adverse events (TAEs), percentage of subjects with serious adverse events (SAEs), and percentage of subjects withdrawals due to adverse events (AEs) [ Time Frame: 40 Weeks Treatment Duration ]
  • Number of subjects with post-Baseline potentially clinically important changes in ECG [ Time Frame: 40 Weeks Treatment Duration ]
  • Percentage of subjects with post-Baseline potentially clinically important changes in ECG [ Time Frame: 40 Weeks Treatment Duration ]
  • Number of subjects with post-Baseline potentially clinically important changes in vital signs [ Time Frame: 40 Weeks Treatment Duration ]
  • Percentage of subjects with post-Baseline potentially clinically important changes in vital signs [ Time Frame: 40 Weeks Treatment Duration ]
  • Number of subjects with post-Baseline potentially clinically important changes in body weight [ Time Frame: 40 Weeks Treatment Duration ]
  • Percentage of subjects with post-Baseline potentially clinically important changes in body weight [ Time Frame: 40 Weeks Treatment Duration ]
  • Number of subjects with post-Baseline potentially clinically important changes in laboratory parameters [ Time Frame: 40 Weeks Treatment Duration ]
  • Percentage of subjects with post-Baseline potentially clinically important changes in laboratory parameters [ Time Frame: 40 Weeks Treatment Duration ]
Original Primary Outcome Measures  ICMJE
 (submitted: February 19, 2020)
Safety and tolerability of long-term treatment with oral trofinetide [ Time Frame: 40 Weeks Treatment Duration ]
Treatment-emergent adverse events (TEAEs), serious adverse events (SAEs), withdrawals due to AEs, potentially clinically important changes in other safety assessments
Change History
Current Secondary Outcome Measures  ICMJE
 (submitted: February 19, 2020)
  • Rett Syndrome Behaviour Questionnaire (RSBQ) total score - change from Baseline to Week 40 [ Time Frame: 40 Weeks Treatment Duration ]
    The scale 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 include general mood, breathing problems, hand behavior, face movements, body rocking/expressionless face, night-time behaviors, fear/anxiety, and walking/standing.
  • Clinical Global Impression-Improvement (CGI-I) score at Week 40 [ Time Frame: 40 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.
  • Change from Baseline to Week 40 in Communication and Symbolic Behavior Scales Developmental Profile™ Infant-Toddler Checklist - Social Composite Score (CSBS-DP-IT Social) [ Time Frame: 40 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 will be 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". Three composite scores assessing 7 skill areas can be calculated: 1) Social Composite (including Emotion and Eye Gaze, Communication Rate and Function, and Gestures); 2) Speech Composite (including Sounds and Words); 3) Symbolic Composite (including Understanding and Object Use).
  • Change from Baseline to Week 40 in Overall Quality of Life Rating of the Impact of Childhood Neurologic Disability Scale (ICND) [ Time Frame: 40 Weeks Treatment Duration ]
    The 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 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").
  • Change from Baseline to Week 40 in Rett Syndrome Clinician Rating of Hand Function (RTT-HF) [ Time Frame: 40 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.
  • Change from Baseline to Week 40 in Rett Syndrome Clinician Rating of Ambulation and Gross Motor Skills (RTT-AMB) [ Time Frame: 40 Weeks Treatment Duration ]
    Clinical assessment of the subject's ability to sit, stand, and ambulate (e.g., walking, running, climbing stairs). The assessment is made on an 8-point Likert scale (0-7) with 0 denoting normal functioning and 7 the most severe impairment.
  • Change from Baseline to Week 40 in Rett Syndrome Clinician Rating of Ability to Communicate Choices (RTT-COMC) [ Time Frame: 40 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.
  • Change from Baseline to Week 40 in Rett Syndrome Clinician Rating of Verbal Communication (RTT-VCOM) [ Time Frame: 40 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.
  • Change from Baseline to Week 40 in Clinical Global Impression-Severity (CGI-S) [ Time Frame: 40 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.
  • Change from Baseline to Week 40 in Rett Syndrome Caregiver Burden Inventory (RTT-CBI) Total Score (items 1-24) [ Time Frame: 40 Weeks Treatment Duration ]
    The 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.
  • Change from Baseline to Week 40 in Impact of Childhood Neurologic Disability Scale (ICND) Total Score [ Time Frame: 40 Weeks Treatment Duration ]
    The 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 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").
Original Secondary Outcome Measures  ICMJE Same as current
Current Other Pre-specified Outcome Measures Not Provided
Original Other Pre-specified Outcome Measures Not Provided
 
Descriptive Information
Brief Title  ICMJE Open-Label Extension Study of Trofinetide for the Treatment of Girls and Women With Rett Syndrome
Official Title  ICMJE A 40-Week, Open-label Extension Study of Trofinetide for the Treatment of Girls and Women With Rett Syndrome
Brief Summary To investigate the safety and tolerability of long-term treatment with oral trofinetide in girls and women with Rett syndrome
Detailed Description Not Provided
Study Type  ICMJE Interventional
Study Phase  ICMJE Phase 3
Study Design  ICMJE Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Condition  ICMJE Rett Syndrome
Intervention  ICMJE Drug: Trofinetide
Trofinetide solution of 30-60 mL based on subject's weight at Baseline, administered twice daily by mouth or gastrostomy tube (G-tube)
Study Arms  ICMJE Experimental: Trofinetide
Intervention: Drug: Trofinetide
Publications * Not Provided

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Recruitment Information
Recruitment Status  ICMJE Enrolling by invitation
Estimated Enrollment  ICMJE
 (submitted: February 19, 2020)
180
Original Estimated Enrollment  ICMJE Same as current
Estimated Study Completion Date  ICMJE October 2022
Estimated Primary Completion Date October 2022   (Final data collection date for primary outcome measure)
Eligibility Criteria  ICMJE

Inclusion Criteria:

  1. Has completed the Week 12/End-of-treatment visit of the antecedent study, Study ACP-2566-003
  2. Met all entry criteria for the antecedent study
  3. May benefit from long-term treatment with open-label trofinetide in the judgment of the Investigator
  4. Can still swallow the study medication provided as a liquid solution or can take it by gastrostomy tube
  5. The subject's caregiver is English-speaking and has sufficient language skills to complete the caregiver assessments
  6. 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 Baseline

Exclusion Criteria:

  1. Began treatment with growth hormone during the antecedent study
  2. Began treatment with IGF-1 during the antecedent study
  3. Began treatment with insulin during the antecedent study
  4. Has developed a 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
  5. Subject is judged by the Investigator or the Medical Monitor to be inappropriate for the study due to AEs, medical condition, or noncompliance with investigational product or study procedures in the antecedent study
  6. Has a clinically significant abnormality in vital signs at Baseline
  7. Has a QTcF interval of >450 ms on the Baseline ECG performed before the first dose of trofinetide is given in the present study
  8. Has developed a clinically significant ECG finding during the antecedent study

Additional inclusion/exclusion criteria apply. Patients will be evaluated at baseline 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 prespecified entry criteria).

Sex/Gender  ICMJE
Sexes Eligible for Study: Female
Ages  ICMJE 5 Years to 21 Years   (Child, Adult)
Accepts Healthy Volunteers  ICMJE No
Contacts  ICMJE Contact information is only displayed when the study is recruiting subjects
Listed Location Countries  ICMJE United States
Removed Location Countries  
 
Administrative Information
NCT Number  ICMJE NCT04279314
Other Study ID Numbers  ICMJE ACP-2566-004
Has Data Monitoring Committee No
U.S. FDA-regulated Product
Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No
IPD Sharing Statement  ICMJE
Plan to Share IPD: No
Responsible Party ACADIA Pharmaceuticals Inc.
Study Sponsor  ICMJE ACADIA Pharmaceuticals Inc.
Collaborators  ICMJE Not Provided
Investigators  ICMJE Not Provided
PRS Account ACADIA Pharmaceuticals Inc.
Verification Date September 2021

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP