Clinical trial Recruiting at 6 sites Observational Ages 1 Year to 18 Women only

Identifying biomarkers in Rett Syndrome

Official title: Characterization of Translatable Neurophysiological Biomarkers to Enhance Therapeutic Development in Rett Syndrome

Run by Children's Hospital of Philadelphia · NCT05932589 · Data updated 2026-11-12

This study is trying to find specific brain signals in girls with Rett Syndrome to see how they differ from girls without the condition and how these signals relate to the severity of their symptoms over time.

Quick facts

Study typeObservational
Ages1 Year to 18 Years
SexWomen only
Enrollment222 (estimated)
SponsorChildren's Hospital of Philadelphia
Academic / other
Locations6 sites (Los Angeles, California and 5 other locations)
StatusRecruiting
StartedOctober 11, 2023
Main results expectedMarch 31, 2028
Study endsMarch 31, 2029
Registry record updatedOctober 26, 2026
Trial IDNCT05932589 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include females aged 3-18 with a clinical diagnosis of RTT and a pathogenic variant in MECP2.

Probably not a fit

Patients with active medical conditions not typically found in RTT or those with duplications in MECP2 may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational study aims to identify candidate biomarkers in individuals with Rett Syndrome (RTT) by measuring electrical activity in the brain through electroencephalograms (EEG) and evoked potentials. The study will compare findings from females with RTT to age-matched typically developing females to assess differences in neurophysiological parameters. Researchers will also explore the stability of these biomarkers over time and their correlation with clinical severity and disease staging. The ultimate goal is to establish reliable measures for future interventions and translational studies.

Why it matters

Potential benefit: If successful, this study could lead to the development of reliable biomarkers for monitoring disease progression and treatment efficacy in Rett Syndrome.

How similar studies have gone: Other studies have shown promise in identifying biomarkers for neurological disorders, but this specific approach in RTT is novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Rett Group: Females ages 3-18 (inclusive) with a clinical diagnosis of RTT with a likely pathogenic or known pathogenic variant in MECP2.
2. Likely Rett Group: Females from 1 year to \< 5 years of age with MECP2 variant if regression has not yet occurred or child is within 6 months of last skill loss.
3. Typically developing (TD) Group: Females age matched to RTT population (1-18) with no developmental or cognitive concerns as assessed using the Child/Adult Behavioral Checklist, Survey of Well-Being of Young Children (\<5yo), or the Wide Range Achievement Test-4 (\>5 yo).

Exclusion Criteria:

Rett and Likely Rett Groups:

1. Presence of a duplication in MECP2 or any other identified pathogenic variant in another gene with a neurodevelopmental phenotype.
2. Active medical conditions not typically found in RTT.

Typically Developing Group:

1. Score below norms on the performance tests
2. Have a known neurological disorder (excluding migraine)
3. Being on neuroactive medications.

Where it's running

  • Children's Hospital of Los Angeles
    Los Angeles, California, United States
    Recruiting
  • Children's Hospital Colorado
    Aurora, Colorado, United States
    Recruiting
  • Boston Children's Hospital
    Brookline, Massachusetts, United States
    Recruiting
  • Children's Hospital of Philadelphia
    Philadelphia, Pennsylvania, United States
    Recruiting
  • Vanderbilt University Medical Center
    Nashville, Tennessee, United States
    Recruiting
  • Texas Children's Hospital
    Houston, Texas, United States
    Recruiting

Study contacts

  • Principal investigator: Eric Marsh, MD, PhD — Children's Hospital of Philadelphia
  • Study coordinator: Holly Dubbs, MS, CGC
  • Email: dubbsh@chop.edu
  • Phone: 215-590-1719

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

  • Registry for individuals with Rett syndrome

    This study is gathering information from people with Rett syndrome and their caregivers to help improve care and develop new treatments for the condition.

    Recruiting at 19 sites International Rett Syndrome Foundation · Birmingham, Alabama and 18 other locations · NCT05432349

  • Auditory EEG and behavioral testing for people with Rett syndrome

    This project will record noninvasive EEG while people with Rett syndrome and matched controls listen to simple sounds to see how their brains process sound.

    Recruiting University of Rochester · Rochester, New York · NCT07569445

  • Fenfluramine HCl for Rett Syndrome in a Phase 3 study

    This study tests whether fenfluramine hydrochloride helps people with Rett syndrome when compared to a placebo.

    Recruiting at 40 sites Phase 3 UCB Pharma · Little Rock, Arkansas and 39 other locations · NCT07503444

  • Daily oral vorinostat for girls and young women with Rett syndrome

    This trial will try daily oral vorinostat at two escalating dose levels, using a four-week placebo baseline and an N-of-1 design so each participant serves as her own control, to see if the drug is safe and shows clinical or molecular benefit in girls and young women with typical Rett syndrome.

    Recruiting Phase 1 Unravel Biosciences, Inc. · Medellín · NCT07150013

  • Efficacy of Bionetide for treating Rett syndrome in females

    This study is testing if an oral medication called Bionetide can help improve behavior and communication in girls and young women aged 5 to 20 with Rett syndrome.

    Recruiting at 18 sites Phase 3 Biomed Industries, Inc. · Phoenix, Arizona and 17 other locations · NCT06840496

  • Assessing cognitive function in Rett syndrome patients receiving trofinetide treatment

    This study is testing how well eye-tracking tasks can measure cognitive abilities in people with Rett syndrome who are starting treatment with trofinetide.

    Recruiting University of Minnesota · Minneapolis, Minnesota · NCT06705816

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.