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Identification of a novel recombinant mutation in Korean patients with Gaucher disease using a long-range PCR approach.

Jeong, SY  | Kim, SJ | Yang, JA | Hong, JH | Lee, SJ | Kim, HJ
Journal of human genetics, 56(6). : 469-471, 2011
Journal Title
Journal of human genetics
Gaucher disease (GD) is an autosomal recessive, lysosomal disorder caused by mutations in the gene for the β-glucocerebrosidase (GBA) enzyme. Presence of the non-functional GBAP pseudogene, which shares high sequence similarity with the functional GBA gene, has made it difficult to carry out molecular analyses of GD, especially recombinant mutations. Using a long-range PCR approach that has been skillfully devised for the easy detection of GBA recombinant mutations, we identified four recombinant mutations including two gene conversion alleles, Rec 1a and Rec 8a, one reciprocal gene fusion allele, Rec 1b, and one reciprocal gene duplication allele, Rec 7b, in Korean patients with GD. Rec 8a, in which the GBAP pseudogene sequence from intron 5 to exon 11 is substituted for the GBA gene is a novel recombinant mutation. All mutations were confirmed by full sequencing of PCR amplicons and/or Southern blot analysis. These results indicate that the usage of long-range PCR may allow the rapid and accurate detection of GBA recombinant mutations and contribute to the improvement of genotyping efficiency in GD patients.

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Journal Papers > School of Medicine / Graduate School of Medicine > Medical Genetics
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