1. Pediatrics Department, Neurology and Metabolic division, Faculty of Medicine Cairo University Cairo Egypt
2. Clinical and Chemical Pathology Department, Faculty of Medicine Cairo University Cairo Egypt
3. Clinical Genetics Department, Human Genetics and Genome Research Division National Research Centre Giza Egypt
4. Medical Molecular Genetics, Human Genetics and Genome Research Division National Research Centre Giza Egypt
5. Pediatrics Department Helwan University Cairo Egypt
6. Pediatrics Department Suez Canal University Ismailia Egypt
7. Enzyvant Basel Switzerland
8. Albrecht‐Kossel‐Institute for Neurodegeneration, Rostock University Medical‐Centre and Centogene AG Rostock Germany