Ancient founder mutation is responsible for Imerslund-Gräsbeck Syndrome among diverse ethnicities
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Ancient founder mutation is responsible for Imerslund-Gräsbeck Syndrome among diverse ethnicities
BACKGROUND Imerslund-Gräsbeck syndrome (IGS) was described just over 50 years ago by Olga Imerslund and Ralph Gräsbeck and colleagues. IGS is caused by specific malabsorption of cobalamin (Cbl) due to bi-allelic mutations in either the cubilin gene (CUBN) or the human amnionless homolog (AMN). Mutations in the two genes are commonly seen in founder populations or in societies with a high degree...
متن کاملImerslund-Gräsbeck syndrome (selective vitamin B12 malabsorption with proteinuria)
Imerslund-Gräsbeck syndrome (IGS) or selective vitamin B(12) (cobalamin) malabsorption with proteinuria is a rare autosomal recessive disorder characterized by vitamin B(12) deficiency commonly resulting in megaloblastic anemia, which is responsive to parenteral vitamin B(12) therapy and appears in childhood. Other manifestations include failure to thrive and grow, infections and neurological d...
متن کاملA Frameshift Mutation in the Cubilin Gene (CUBN) in Border Collies with Imerslund-Gräsbeck Syndrome (Selective Cobalamin Malabsorption)
Imerslund-Gräsbeck syndrome (IGS) or selective cobalamin malabsorption has been described in humans and dogs. IGS occurs in Border Collies and is inherited as a monogenic autosomal recessive trait in this breed. Using 7 IGS cases and 7 non-affected controls we mapped the causative mutation by genome-wide association and homozygosity mapping to a 3.53 Mb interval on chromosome 2. We re-sequenced...
متن کاملImerslund-Gräsbeck syndrome in a 25-month-old Italian girl caused by a homozygous mutation in AMN
Imerslund-Gräsbeck syndrome is a rare autosomal recessive disorder, characterized by vitamin B12 deficiency due to selective malabsorption of the vitamin and usually results in megaloblastic anemia appearing in childhood. It is responsive to parenteral vitamin B12 therapy.The estimated prevalence (calculated based on Scandinavian data) is less than 6:1,000,000. However, many cases may be misdia...
متن کاملVit. B12 Deficiency in Children (imerslund-gräsbeck Syndrome in Two Pairs of Siblings).
UNLABELLED Improvement in the quality of life in Europe and North America in last decades caused that economical and social aspects of living conditions of the population have less effect and genetic defects of malabsorption of vitamin B12 became the main reason for cobalamin deficiency in children. Imerslund-Grasbeck syndrome (IGS) is characterized by vitamin B12 deficiency that leads usually ...
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ژورنال
عنوان ژورنال: Orphanet Journal of Rare Diseases
سال: 2011
ISSN: 1750-1172
DOI: 10.1186/1750-1172-6-74