Author:
Holthöfer Laura,Diederich Stefan,Haug Verena,Lehmann Lioba,Hewel Charlotte,Paul Norbert W.,Schweiger Susann,Gerber Susanne,Linke Matthias
Abstract
AbstractAdaptive nanopore sequencing as a diagnostic method for imprinting disorders and episignature analysis revealed an intragenic duplication of Exon 6 and 7 in UBE3A (NM_000462.5) in a patient with relatively mild Angelman-like syndrome. In an all-in-one nanopore sequencing analysis DNA hypomethylation of the SNURF:TSS-DMR, known contributing deletions on the maternal allele and point mutations in UBE3A could be ruled out as disease drivers. In contrast, breakpoints and orientation of the tandem duplication could clearly be defined. Segregation analysis in the family showed that the duplication derived de novo in the maternal grandfather. Our study shows the benefits of an all-in-one nanopore sequencing approach for the diagnostics of Angelman syndrome and other imprinting disorders.
Funder
Universitätsmedizin der Johannes Gutenberg-Universität Mainz
Publisher
Springer Science and Business Media LLC
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