ALDH7A1 and pyridoxal phosphate-responsive seizures: Beyond classic ALDH7A1 mutations causing (PDE) and pyridox(am)ine-5’-phosphate oxidase (PNPO deficiency), the recent characterization of additional metabolic disorders—including hypophosphatasia and homocystinuria—has broadened the spectrum of vitamin B6-dependent epileptic syndromes [6].