Mutations in BOREALIN cause thyroid dysgenesis.

Congenital hypothyroidism is the most common neonatal endocrine disorder and is primarily caused by developmental abnormalities otherwise known as thyroid dysgenesis (TD). We performed whole exome sequencing (WES) in a consanguineous family with TD and subsequently sequenced a cohort of 134 probands with TD to identify genetic factors predisposing to the disease. We identified the novel missense mutations p.S148F, p.R114Q and p.L177W in the BOREALIN gene in TD-affected families. Borealin is a major component of the Chromosomal Passenger Complex (CPC) with well-known functions in mitosis. Further analysis of the missense mutations showed no apparent effects on mitosis. In contrast, expression of the mutants in human thyrocytes resulted in defects in adhesion and migration with corresponding changes in gene expression suggesting others functions for this mitotic protein. These results were well correlated with the same gene expression pattern analysed in the thyroid tissue of the patient with BOREALIN-p.R114W. These studies open new avenues in the genetics of TD in humans. © The Authors 2016. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

Citation

Aurore Carré, Athanasia Stoupa, Dulanjalee Kariyawasam, Manelle Gueriouz, Cyrille Ramond, Taylor Monus, Juliane Léger, Sébastien Gaujoux, Frédéric Sebag, Nicolas Glaser, Delphine Zenaty, Patrick Nitschke, Christine Bole-Feysot, Laurence Hubert, Stanislas Lyonnet, Raphaël Scharfmann, Arnold Munnich, Claude Besmond, William Taylor, Michel Polak. Mutations in BOREALIN cause thyroid dysgenesis. Human molecular genetics. 2017 Feb 01;26(3):599-610

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PMID: 28025328

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