Rett Syndrome Registry (RSR)

June 26, 2026 updated by: International Rett Syndrome Foundation

Rett Syndrome Real World Data Observational Registry

The Rett Syndrome Registry is a longitudinal observational study of individuals with MECP2 mutations and a diagnosis of Rett syndrome. Designed together with the IRSF Rett Syndrome Center of Excellence Network medical directors, this study collects data on the signs and symptoms of Rett syndrome as reported by the Rett syndrome experts and by the caregivers of individuals with Rett syndrome. This study will be used to develop consensus based guidelines for the care of your loved ones with Rett syndrome and to facilitate the development of better clinical trials and other aspects of the drug development path for Rett syndrome.

Study Overview

Status

Status

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

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.

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.
Observational

Enrollment (Estimated)

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.
3000

Contacts and Locations

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

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • Alabama
      • Birmingham, Alabama, United States, 35233
    • California
      • Los Angeles, California, United States, 90027
        • Recruiting
        • Children's Hospital Los Angeles
        • Contact:
      • Oakland, California, United States, 94598
        • Recruiting
        • UCSF Benioff Children's Hospital
        • Contact:
      • San Diego, California, United States, 92123
        • Recruiting
        • Rady Children's Hospital - San Diego
        • Contact:
    • Colorado
      • Denver, Colorado, United States, 80045
    • Florida
      • Miami, Florida, United States, 33155
    • Illinois
      • Chicago, Illinois, United States, 60612
        • Recruiting
        • Rush University Medical Center
        • Contact:
    • Maryland
      • Baltimore, Maryland, United States, 21205
    • Massachusetts
      • Boston, Massachusetts, United States, 02115
    • Minnesota
      • Saint Paul, Minnesota, United States, 55101
    • Missouri
      • St Louis, Missouri, United States, 63110
        • Recruiting
        • Washington University in St. Louis
        • Contact:
    • North Carolina
      • Chapel Hill, North Carolina, United States, 27517
    • Ohio
      • Cincinnati, Ohio, United States, 45229
        • Recruiting
        • Cincinnati Children's Hospital Medical Center
        • Contact:
      • Columbus, Ohio, United States, 43205
    • Pennsylvania
      • Philadelphia, Pennsylvania, United States, 19104
        • Recruiting
        • Children's Hospital of Philadelphia
        • Contact:
    • South Carolina
      • Greenwood, South Carolina, United States, 29646
        • Recruiting
        • Greenwood Genetic Center
        • Contact:
          • Fran Annese
          • Phone Number: (864) 941-8100
          • Email: fran@ggc.org
    • Tennessee
      • Nashville, Tennessee, United States, 37232
        • Recruiting
        • Vanderbilt Kennedy Center
        • Contact:
    • Texas
      • Dallas, Texas, United States, 75207
      • Houston, Texas, United States, 77030
        • Recruiting
        • Texas Children's Hospital
        • Contact:

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

1 second to 99 years (Child, Adult, Older Adult)

Accepts Healthy Volunteers

No

Sampling Method

Probability Sample

Study Population

The study population is males and females of all ages with a loss of function alteration of the MECP2 gene, most commonly resulting in Rett syndrome.

Description

Inclusion Criteria:

  • Male or female with a pathologic loss of function alteration of MECP2

Exclusion Criteria:

  • Male or female with a gain of function alteration of MECP2, including those with MEPC2 duplication or triplication

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

  • Observational Models: Cohort
  • Time Perspectives: Prospective

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
Natural History
Time Frame: 5 years
To longitudinally evaluate the natural history of patients with mutations on the MECP2 gene, estimating and defining their clinical spectrum (e.g. disease course and complications of disease).
5 years

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.
International Rett Syndrome Foundation

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Baylor College of Medicine
Children's Hospital of Philadelphia
University of Alabama at Birmingham
Children's Hospital Colorado
Boston Children's Hospital
Vanderbilt University Medical Center
Nationwide Children's Hospital
University of North Carolina, Chapel Hill
Children's Hospital Medical Center, Cincinnati
Children's Hospital Los Angeles
St. Louis Children's Hospital
Hugo W. Moser Research Institute at Kennedy Krieger, Inc.
UCSF Benioff Children's Hospital Oakland
Rady Children's Hospital, San Diego
Rush University
Gillette Children's Specialty Healthcare
Children's Health UTSW
Greenwood Genetic Center
Hive Networks
Nicklaus Children's Hospital

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.
August 2, 2022

Primary Completion (Estimated)

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.
July 1, 2027

Study Completion (Estimated)

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.
July 1, 2028

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).
April 5, 2022

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.
June 20, 2022

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.
June 27, 2022

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.
June 30, 2026

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.
June 26, 2026

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.
June 1, 2026

More Information

Terms related to this study

Keywords

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.
  • Pro00060206

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

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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