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Mutations in the actively expressed, maternal allele of the imprinted KCNK9 gene cause Birk-Barel intellectual disability syndrome (BBIDS). Using a BBIDS mouse model, we identify here a partial rescue of the BBIDS-like behavioral and neuronal phenotypes mediated via residual expression from the paternal Kcnk9 (Kcnk9pat) allele. We further demonstrate that the second-generation HDAC inhibitor CI-994 induces enhanced expression from the paternally silenced Kcnk9 allele and leads to a full rescue of the behavioral phenotype suggesting CI-994 as a promising molecule for BBIDS therapy. Thus, these findings suggest a potential approach to improve cognitive dysfunction in a mouse model of an imprinting disorder.


Alexis Cooper, Tamer Butto, Niklas Hammer, Somanath Jagannath, Desiree Lucia Fend-Guella, Junaid Akhtar, Konstantin Radyushkin, Florian Lesage, Jennifer Winter, Susanne Strand, Jochen Roeper, Ulrich Zechner, Susann Schweiger. Inhibition of histone deacetylation rescues phenotype in a mouse model of Birk-Barel intellectual disability syndrome. Nature communications. 2020 Jan 24;11(1):480

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PMID: 31980599

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