Open-Label Extension Study of Trofinetide for Rett Syndrome

NCT ID: NCT04776746

Last Updated: 2024-09-27

Study Results

Results available

Outcome measurements, participant flow, baseline characteristics, and adverse events have been published for this study.

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Basic Information

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Recruitment Status

TERMINATED

Clinical Phase

PHASE3

Total Enrollment

77 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-11-08

Study Completion Date

2023-06-30

Brief Summary

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To investigate the safety and tolerability of continued long-term treatment with oral trofinetide in girls and women with Rett syndrome

Detailed Description

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Conditions

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Rett Syndrome

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Drug - trofinetide

trofinetide oral solution

Group Type EXPERIMENTAL

trofinetide

Intervention Type DRUG

Study drug is administered twice a day for up to approximately 32 months. Doses may be taken orally or administered by gastrostomy (G) tube. The subject's assigned dose for this study will be the final dose from the antecedent study (ACP-2566-004).

Interventions

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trofinetide

Study drug is administered twice a day for up to approximately 32 months. Doses may be taken orally or administered by gastrostomy (G) tube. The subject's assigned dose for this study will be the final dose from the antecedent study (ACP-2566-004).

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

1. Has completed the EOT visit of the antecedent trofinetide Study ACP-2566-004 (i.e., has completed 40 weeks)
2. May benefit from continued treatment with open-label trofinetide in the judgment of the Investigator
3. Can still swallow the study medication provided as a liquid solution or can take it by gastrostomy tube
4. The subject's caregiver is English-speaking and has sufficient language skills to complete the caregiver assessments

Childbearing Potential
5. Subjects of childbearing potential must abstain from sexual activity for the duration of the study and for at least 30 days thereafter. If a subject is sexually active or becomes sexually active during the study, she must use 2 clinically acceptable methods of contraception (e.g., oral, intrauterine device \[IUD\], diaphragm plus spermicide, injectable, transdermal or implantable contraception) for the duration of the study and for at least 30 days thereafter. Subject must not be pregnant or breastfeeding.

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)
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 an average QTcF interval of \>450 ms on the Baseline ECG performed before the first dose of trofinetide is given in the present study (i.e., the ECG performed at the EOT visit of the antecedent study)
8. Has developed a clinically significant ECG finding during the antecedent study
Minimum Eligible Age

5 Years

Maximum Eligible Age

21 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No

Sponsors

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ACADIA Pharmaceuticals Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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University of Alabama at Birmingham

Birmingham, Alabama, United States

Site Status

Translational Genomics Research Institute (TGen)

Phoenix, Arizona, United States

Site Status

University of California, San Diego

La Jolla, California, United States

Site Status

UC Davis MIND Institute

Sacramento, California, United States

Site Status

Children's Hospital Colorado Aurora

Aurora, Colorado, United States

Site Status

University of South Florida

Tampa, Florida, United States

Site Status

Emory Genetics Clinical Trial Center

Atlanta, Georgia, United States

Site Status

Rush University Medical Center

Chicago, Illinois, United States

Site Status

Kennedy Krieger Institute, John Hopkins School of Medicine

Baltimore, Maryland, United States

Site Status

Boston Children's Hospital Harvard Medical School

Boston, Massachusetts, United States

Site Status

Gillette Children's Specialty Healthcare

Saint Paul, Minnesota, United States

Site Status

Washington University School of Medicine

St Louis, Missouri, United States

Site Status

Montefiore Medical Center

The Bronx, New York, United States

Site Status

The University of North Carolina at Chapel Hill

Chapel Hill, North Carolina, United States

Site Status

Cincinnati Children's Hospital Medical Center

Cincinnati, Ohio, United States

Site Status

Cleveland Clinic

Cleveland, Ohio, United States

Site Status

Children's Hospital of Philadelphia

Philadelphia, Pennsylvania, United States

Site Status

Greenwood Genetic Center

Greenwood, South Carolina, United States

Site Status

Vanderbilt University Medical Center

Nashville, Tennessee, United States

Site Status

Texas Children's Hospital

Houston, Texas, United States

Site Status

Seattle Children's Hospital

Seattle, Washington, United States

Site Status

Countries

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United States

References

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Percy AK, Neul JL, Benke TA, Berry-Kravis EM, Glaze DG, Marsh ED, Barrett AM, An D, Bishop KM, Youakim JM. Trofinetide for the treatment of Rett syndrome: Long-term safety and efficacy results of the 32-month, open-label LILAC-2 study. Med. 2024 Oct 11;5(10):1275-1281.e2. doi: 10.1016/j.medj.2024.06.007. Epub 2024 Jul 17.

Reference Type BACKGROUND
PMID: 39025065 (View on PubMed)

Parent H, Ferranti A, Niswender C. Trofinetide: a pioneering treatment for Rett syndrome. Trends Pharmacol Sci. 2023 Oct;44(10):740-741. doi: 10.1016/j.tips.2023.06.008. Epub 2023 Jul 16.

Reference Type DERIVED
PMID: 37460385 (View on PubMed)

Provided Documents

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Document Type: Study Protocol

View Document

Document Type: Statistical Analysis Plan

View Document

Other Identifiers

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ACP-2566-005

Identifier Type: -

Identifier Source: org_study_id

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