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Functional assessment of variants in the TSC1 and TSC2 genes identified in individuals with Tuberous Sclerosis Complex

Hoogeveen-Westerveld, Marianne, Wentink, Marjolein, van den Heuvel, Diana, Mozaffari, Melika, Ekong, Rosemary, Povey, Sue, den Dunnen, Johan T., Metcalfe, Kay, Vallee, Stephanie, Krueger, Stefan, Bergoffen, JoAnn, Shashi, Vandana, Elmslie, Frances, Kwiatkowski, David, Sampson, Julian Roy, Vidales, Concha, Dzarir, Jacinta, Garcia-Planells, Javier, Dies, Kira, Maat-Kievit, Anneke, van den Ouweland, Ans, Halley, Dicky and Nellist, Mark 2011. Functional assessment of variants in the TSC1 and TSC2 genes identified in individuals with Tuberous Sclerosis Complex. Human Mutation 32 (4) , pp. 424-435. 10.1002/humu.21451

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The effects of missense changes and small in-frame deletions and insertions on protein function are not easy to predict, and the identification of such variants in individuals at risk of a genetic disease can complicate genetic counselling. One option is to perform functional tests to assess whether the variants affect protein function. We have used this strategy to characterize variants identified in the TSC1 and TSC2 genes in individuals with, or suspected of having, Tuberous Sclerosis Complex (TSC). Here we present an overview of our functional studies on 45 TSC1 and 107 TSC2 variants. Using a standardized protocol we classified 16 TSC1 variants and 70 TSC2 variants as pathogenic. In addition we identified eight putative splice site mutations (five TSC1 and three TSC2). The remaining 24 TSC1 and 34 TSC2 variants were classified as probably neutral.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
Subjects: Q Science > QH Natural history > QH426 Genetics
Uncontrolled Keywords: tuberous sclerosis complex ; TSC1 ; TSC2 ; Unclassified variants
Publisher: Wiley Blackwell
ISSN: 1059-7794
Last Modified: 04 Jun 2017 03:34

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