Evaluating the effects of EryDex on neurological symptoms in children with Ataxia Telangiectasia

A Multi-center, Randomized, Double-blind, Placebo-controlled Trial to Evaluate the Neurological Effects of EryDex on Subjects With Ataxia Telangiectasia (NEAT)

PHASE3 · Quince Therapeutics S.p.A. · NCT06193200

This study is testing if a new treatment called EryDex can help improve neurological symptoms in children with Ataxia Telangiectasia.

Quick facts

PhasePHASE3
Study typeInterventional
Enrollment106 (estimated)
Ages6 Years and up
SexAll
SponsorQuince Therapeutics S.p.A. (industry)
Locations21 sites (Los Angeles, California and 20 other locations)
Trial IDNCT06193200 on ClinicalTrials.gov

What this trial studies

This international, multi-center, randomized, double-blind, placebo-controlled Phase 3 study aims to assess the neurological effects of EryDex, a treatment involving dexamethasone sodium phosphate infused into autologous erythrocytes, on patients diagnosed with Ataxia Telangiectasia (A-T). Participants aged 6 to 9 years will be randomized to receive either EryDex or a placebo every 28 days. The study will also include a smaller group of participants aged 10 years and older. The primary focus is to evaluate improvements in neurological symptoms associated with A-T.

Who should consider this trial

Good fit: Ideal candidates for this study are children aged 6 to 9 years with a clinical diagnosis and genetic confirmation of Ataxia Telangiectasia.

Not a fit: Patients with severe immunological impairments or those currently undergoing treatment for neoplastic diseases may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could significantly improve neurological symptoms and quality of life for patients with Ataxia Telangiectasia.

How similar studies have performed: While this approach is novel in the context of A-T, similar studies using dexamethasone in other conditions have shown promising results.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Clinical diagnosis of A-T
* In autonomous gait or is helped by periodic use of a support
* Genetic confirmation of A-T
* Body weight ≥15 kg

Exclusion Criteria:

* Participation in another clinical study
* Immune impairment
* History of severe impairment of the immunological system
* Current neoplastic disease or previous neoplastic disease not in remission for at least 2 years
* Severe or unstable pulmonary disease
* Uncontrolled diabetes
* Current chronic or acute significant renal and/or hepatic impairment
* Any previous oral or parenteral steroid use within 6 weeks before Baseline. Treatment with inhaled or intranasal steroids for asthma or allergies, as well as use of topical steroids will be permitted
* A disability that may prevent the subject from completing all study requirements

Where this trial is running

Los Angeles, California and 20 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Ataxia Telangiectasia, A-T, Louis-Bar syndrome, Cerebello-oculocutaneous telangiectasia

Last reviewed 2026-05-15 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.