Clinical trial Recruiting at 9 sites Observational Ages 1 Month to 100

International CDKL5 Clinical Research Network

Official title: Multi-Site Validation of Biomarkers and Core Clinical Outcome Measures for Clinical Trials Readiness in CDKL5 Deficiency Disorder

Run by University of Colorado, Denver · NCT05558371 · Data updated 2026-11-12

This study is trying to find better ways to measure how CDKL5 deficiency disorder affects people so that future treatments can be tested more effectively.

Quick facts

Study typeObservational
Ages1 Month to 100 Years
SexAll
Enrollment1000 (estimated)
SponsorUniversity of Colorado, Denver
Academic / other
Locations9 sites (Los Angeles, California and 8 other locations)
StatusRecruiting
StartedFebruary 15, 2021
Main results expectedFebruary 15, 2026
Study endsFebruary 15, 2027
Registry record updatedDecember 6, 2023
Trial IDNCT05558371 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are children diagnosed with CDKL5 deficiency disorder, aged 1 month to 100 years.

Probably not a fit

Patients who do not meet the inclusion criteria for CDD or are not receiving care at participating institutions 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 focuses on CDKL5 deficiency disorder (CDD), a severe developmental and epileptic encephalopathy caused by variants in the CDKL5 gene. The research aims to develop and validate clinical outcome measures and biomarkers that will facilitate clinical trial readiness for potential disease-modifying therapies. By leveraging a network of experts and existing data, the study seeks to refine these measures specifically for CDD, which is distinct from Rett syndrome. The ultimate goal is to ensure that future therapies can be effectively assessed for their efficacy in treating CDD.

Why it matters

Potential benefit: If successful, this study could lead to the development of validated outcome measures that enhance the effectiveness of future therapies for CDD.

How similar studies have gone: While there are ongoing clinical trials for CDD, this study's approach to developing specific outcome measures is novel and has not been extensively tested in similar contexts.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* All children diagnosed with CDD age 1-month to 100 years of age that are receiving care at one of the study institutions or are registered with the International CDKL5 Disorder Database will be considered for the study population.

Exclusion Criteria:

* Individuals who do not meet study inclusion criteria.

Where it's running

  • University of California Los Angeles/UCLA Mattel Children's Hospital
    Los Angeles, California, United States
    Recruiting
  • University of Colorado Denver/Children's Hospital Colorado
    Aurora, Colorado, United States
    Recruiting
  • Harvard Medical School/Boston Children's Hospital
    Boston, Massachusetts, United States
    Recruiting
  • Washington University in St. Louis/St. Louis Children's Hospital
    St Louis, Missouri, United States
    Recruiting
  • NYU Langone Health
    New York, New York, United States
    Recruiting
  • Cleveland Clinic Foundation
    Cleveland, Ohio, United States
    Recruiting
Show 3 more locations
  • Children's Hospital of Philadelphia
    Philadelphia, Pennsylvania, United States
    Recruiting
  • Baylor College of Medicine/ Texas Children's Hospital
    Houston, Texas, United States
    Recruiting
  • Telethon Kids Institute/Perth Children's Hospital
    Perth, Nedlands Western Australia, Australia
    Recruiting

Study contacts

Similar studies

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

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.