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Ítem Síndrome de Morquio: nueva mutación del gen GALNS en dos hermanos del sur-occidente colombiano. Análisis clínico, molecular y bioinformático(Sociedad Mexicana de Pediatria, 2016-05-03) Pachajoa Londoño, Harry MauricioMucopolysaccharidosis type IV A, or Morquio syndrome, is an autosomal recessive lysosomal storage disorder that is caused by mutations on the GALNS gene, resulting in the accumulation of keratan sulfate and condroitin sulfate in certain tissues. It is expressed as generalized skeletal dysplasia including short stature, Pectus carinatum, platyspondylia, odontoid hypoplasia, kyphoscoliosis, and genu valgum. Material and methods: 9 and 6 six year old brothers with clinical characteristic of severe Morquio syndrome. GALNS gene sequencing is performed detecting two mutations in both brothers, the fi rst one in exon 3 (c.280C>T p.R94C), and a new mutation in exon 9 (c.998G>A p.G333D), which was determined as potentially pathological. Bioinformatic analysis of the mutations via an in silico analysis of multiple sequence homology, using the Softwares SIFT, PolyPhen, nsSNPAnalyzer, I-Mutant, FOLD X, and DeepView-Swiss-PdbViewÍtem Enfoque diagnóstico molecular utilizando secuenciación exómica en las distrofias musculares cintura-cadera(Universidad Nacional de Colombia, 2016-01-01) Lois, SergioBackground. Limb-girdle muscular dystrophy type 1B has a dominant autosomal inheritance pattern and is caused by a mutation in the LMNA gene. This disease has a major neuromuscular and cardiac compromise; furthermore, it belongs to the limb-girdle muscular dystrophies. Objective. To make a clinical and molecular confirmatory diagnosis in a patient with proximal muscular weakness and cardiac symptoms using whole exome sequencing. Materials and Methods. This is the case of a 57 year old patient with a slowly progressive proximal muscular weakness and cardiac compromise; furthermore, the patient has many relatives with the same clinical history. Whole exome sequencing with Sanger confirmation and bioinformatics analysis was performed on the found mutation.