Acute Pancreatitis Secondary to Severe Hypertriglyceridaemia in a Patient with Type 1a Glycogen Storage Disease: Emergent Use of Plasmapheresis -- A Third Case of Glycogen Storage Disease IB and Giant Cell Tumour of the Mandible: A Disease Association or Iatrogenic Complication of Therapy -- Cardiopulmonary Exercise Testing Reflects Improved Exercise Capacity in Response to Treatment in Morquio A Patients: Results of a 52-Week Pilot Study of Two Different Doses of Elosulfase Alfa -- EPG5-Related Vici Syndrome: A Primary Defect of Autophagic Regulation with an Emerging Phenotype Overlapping with Mitochondrial Disorders -- Compound Heterozygous Inheritance of Mutations in Coenzyme Q8A Results in Autosomal Recessive Cerebellar Ataxia and Coenzyme Q10 Deficiency in a Female Sib-Pair -- The Validity of Bioelectrical Impedance Analysis to Measure Body Composition in Phenylketonuria -- Effect of Storage Conditions on Stability of Ophthalmological Compounded Cysteamine Eye Drops -- Leber Hereditary Optic Neuropathy and Longitudinally Extensive Transverse Myelitis -- Mitochondrial Disease in Children: The Nephrologist’s Perspective -- Characterization of Phenyalanine Hydroxylase Gene Mutations in Chilean PKU Patients -- Long-Term Systematic Monitoring of Four Polish Transaldolase Deficient Patients -- Coping Strategies, Stress, and Support Needs in Caregivers of Children with Mucopolysaccharidosis -- Beneficial Effect of BH4 Treatment in a 15-Year-Old Boy with Biallelic Mutations in DNAJC12 -- Secondary Hemophagocytic Syndrome Associated with COG6 Gene Defect: Report and Review -- Mitochondrial Encephalopathy: First Portuguese Report of a VARS2 Causative Variant.