Evaluate the Neurological Effects of EryDex on Subjects With A-T

Copenhagen University Hospital, Rigshospitalet, Department of Pediatric Neurology, Copenhagen

The Johns Hopkins Hospital, Division of pediatric allergy and immunology, Baltimore

Spedali Civili di Brescia, Pediatric immunology department, Brescia

Hospital Universitario La Paz, Department of pediatric neurology, Madrid

Cincinnati Children's Hospital, Division of neurology, Cincinnati

University Hospital Frankfurt, Pediatric and Adolescent Clinic, Frankfurt

IKF Pneumologie GmbH & Co. KG; Institut für klinische Forschung Pneumologie Clinical Research Center Respiratory Diseases, Frankfurt

UT Health Houston, Department of pediatrics, division of child & adolescent neurology, Houston

University of California Los Angeles (UCLA), Ataxia Center and HD Center of excellence, Los Angeles

Policlinico Umberto I, La sapienza University, Department of neurosciences and menthal health, Roma

Oslo University Hospital, Rikshospitalet, Division of Pediatric and Adolescent Medicine, Norwegian National Unit for Newborn Screening, Oslo

MedPolonia sp zoo, Poznan

"Instytut Pomnik-Centrum Zdrowia Dziecka, Immunology clinic", Warsaw

Hospital Universitari Vall d'Hebron, Department of pediatric neurology, Barcelona

University Children's Hospital Zürich - Eleonore Foundation, Zurich

University Hospitals Birmingham NHS Foundation Trust, Birmingham

St George's University Hospitals NHS Foundation Trust, Centre for Neonatal and Paediatric Infection, London

Great Ormond Street Hospital for Children, Zayed Centre for Research, London

Nottingham Children's Hospital, Queen's Medical Center, Children's neurology, Nottingham