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Deprecated: Implicit conversion from float 261.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Mol+Genet+Metab+Rep 2015 ; 2 (ä): 81-4 Nephropedia Template TP
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First contiguous gene deletion causing biotinidase deficiency: The enzyme deficiency in three Sri Lankan children #MMPMID28649532
Senanayake DN; Jasinge EA; Pindolia K; Wanigasinghe J; Monaghan K; Suchy SF; Wei S; Jaysena S; Wolf B
Mol Genet Metab Rep 2015[Mar]; 2 (ä): 81-4 PMID28649532show ga
We report three symptomatic children with profound biotinidase deficiency from Sri Lanka. All three children presented with typical clinical features of the disorder. The first is homozygous for a missense mutation in the BTD gene (c.98_104 del7insTCC; p.Cys33PhefsX36) that is commonly seen in the western countries, the second is homozygous for a novel missense mutation (p.Ala439Asp), and the third is the first reported instance of a contiguous gene deletion causing the enzyme deficiency. In addition, this latter finding exemplifies the importance of considering a deletion within the BTD gene for reconciling enzymatic activity with genotype, which can occur in asymptomatic children who are identified by newborn screening.