Detailed Biochemical and Bioenergetic Characterization of FBXL4-Related Encephalomyopathic Mitochondrial DNA Depletion -- Recurrent Ventricular Tachycardia in Medium-Chain Acyl-Coenzyme A Dehydrogenase Deficiency -- Application of an Image Cytometry Protocol for Cellular and Mitochondrial Phenotyping on Fibroblasts from Patients with Inherited Disorders -- SUCLA2< Deficiency: A Deafness-Dystonia Syndrome with Distinctive Metabolic Findings (Report of a New Patient and Review of the Literature) -- Diagnostic Value of Urinary Mevalonic Acid Excretion in Patients with a Clinical Suspicion of Mevalonate Kinase Deficiency (MKD) -- Hyperprolinemia in Type 2 Glutaric Aciduria and MADD-Like Profiles -- IgG N-Glycosylation Galactose Incorporation Ratios for the Monitoring of Classical Galactosaemia -- Intracranial Pressure Monitoring Demonstrates that Cerebral Edema Is Not Correlated to Hyperammonemia in a Child with Ornithine Transcarbamylase Deficiency -- No Evidence for Association of SCO2 Heterozygosity with High-Grade Myopia or Other Diseases with Possible Mitochondrial Dysfunction -- Voluntary Exercise Prevents Oxidative Stress in the Brain of Phenylketonuria Mice -- Seizures Due to a KCNQ2 Mutation: Treatment with Vitamin B6 -- The Frequencies of Different Inborn Errors of Metabolism in Adult Metabolic Centres: Report from the SSIEM Adult Metabolic Physicians Group -- Electroclinical Features of Early-Onset Epileptic Encephalopathies in Congenital Disorders of Glycosylation (CDGs) -- The Newborn Screening Paradox: Sensitivity vs. Overdiagnosis in VLCAD Deficiency -- Further Delineation of the ALG9-CDG Phenotype.