De Novo Mutations in Protein Kinase Genes CAMK2A and CAMK2B Cause Intellectual Disability.

Authors:
Sébastien Küry Geeske M van Woerden Thomas Besnard Martina Proietti Onori Xénia Latypova Meghan C Towne Megan T Cho Trine E Prescott Melissa A Ploeg Stephan Sanders Holly A F Stessman Aurora Pujol Ben Distel Laurie A Robak Jonathan A Bernstein Anne-Sophie Denommé-Pichon Gaëtan Lesca Elizabeth A Sellars Jonathan Berg Wilfrid Carré Øyvind Løvold Busk Bregje W M van Bon Jeff L Waugh Matthew Deardorff George E Hoganson Katherine B Bosanko Diana S Johnson Tabib Dabir Øystein Lunde Holla Ajoy Sarkar Kristian Tveten Julitta de Bellescize Geir J Braathen Paulien A Terhal Dorothy K Grange Arie van Haeringen Christina Lam Ghayda Mirzaa Jennifer Burton Elizabeth J Bhoj Jessica Douglas Avni B Santani Addie I Nesbitt Katherine L Helbig Marisa V Andrews Amber Begtrup Sha Tang Koen L I van Gassen Jane Juusola Kimberly Foss Gregory M Enns Ute Moog Katrin Hinderhofer Nagarajan Paramasivam Sharyn Lincoln Brandon H Kusako Pierre Lindenbaum Eric Charpentier Catherine B Nowak Elouan Cherot Thomas Simonet Claudia A L Ruivenkamp Sihoun Hahn Catherine A Brownstein Fan Xia Sébastien Schmitt Wallid Deb Dominique Bonneau Mathilde Nizon Delphine Quinquis Jamel Chelly Gabrielle Rudolf Damien Sanlaville Philippe Parent Brigitte Gilbert-Dussardier Annick Toutain Vernon R Sutton Jenny Thies Lisenka E L M Peart-Vissers Pierre Boisseau Marie Vincent Andreas M Grabrucker Christèle Dubourg Wen-Hann Tan Nienke E Verbeek Martin Granzow Gijs W E Santen Jay Shendure Bertrand Isidor Laurent Pasquier Richard Redon Yaping Yang Matthew W State Tjitske Kleefstra Benjamin Cogné Slavé Petrovski Kyle Retterer Evan E Eichler Jill A Rosenfeld Pankaj B Agrawal Stéphane Bézieau Sylvie Odent Ype Elgersma Sandra Mercier

Am J Hum Genet 2017 Nov;101(5):768-788

CHU Nantes, Service de Génétique Médicale, 9 quai Moncousu, 44093 Nantes Cedex 1, France.

Calcium/calmodulin-dependent protein kinase II (CAMK2) is one of the first proteins shown to be essential for normal learning and synaptic plasticity in mice, but its requirement for human brain development has not yet been established. Through a multi-center collaborative study based on a whole-exome sequencing approach, we identified 19 exceedingly rare de novo CAMK2A or CAMK2B variants in 24 unrelated individuals with intellectual disability. Variants were assessed for their effect on CAMK2 function and on neuronal migration. For both CAMK2A and CAMK2B, we identified mutations that decreased or increased CAMK2 auto-phosphorylation at Thr286/Thr287. We further found that all mutations affecting auto-phosphorylation also affected neuronal migration, highlighting the importance of tightly regulated CAMK2 auto-phosphorylation in neuronal function and neurodevelopment. Our data establish the importance of CAMK2A and CAMK2B and their auto-phosphorylation in human brain function and expand the phenotypic spectrum of the disorders caused by variants in key players of the glutamatergic signaling pathway.

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Source
http://dx.doi.org/10.1016/j.ajhg.2017.10.003DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5673671PMC
November 2017
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