Variants in CUL4B are associated with cerebral malformations

Anneke T. Vulto-van Silfhout, Tadashi Nakagawa, Nadia Bahi-Buisson, Stefan A. Haas, Hao Hu, Melanie Bienek, Lisenka E.L.M. Vissers, Christian Gilissen, Andreas Tzschach, Andreas Busche, Jörg Müsebeck, Patrick Rump, Inge B. Mathijssen, Kristiina Avela, Mirja Somer, Fatma Doagu, Anju K. Philips, Anita Rauch, Alessandra Baumer, Krysta VoesenekKarine Poirier, Jacqueline Vigneron, Daniel Amram, Sylvie Odent, Magdalena Nawara, Ewa Obersztyn, Jacek Lenart, Agnieszka Charzewska, Nicolas Lebrun, Ute Fischer, Willy M. Nillesen, Helger G. Yntema, Irma Järvelä, Hans Hilger Ropers, Bert B.A. de Vries, Han G. Brunner, Hans van Bokhoven, F. Lucy Raymond, Michèl A.A.P. Willemsen, Jamel Chelly, Yue Xiong, A. James Barkovich, Vera M. Kalscheuer, Tjitske Kleefstra, Arjan P.M. de Brouwer

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

Variants in cullin 4B (CUL4B) are a known cause of syndromic X-linked intellectual disability. Here, we describe an additional 25 patients from 11 families with variants in CUL4B. We identified nine different novel variants in these families and confirmed the pathogenicity of all nontruncating variants. Neuroimaging data, available for 15 patients, showed the presence of cerebral malformations in ten patients. The cerebral anomalies comprised malformations of cortical development (MCD), ventriculomegaly, and diminished white matter volume. The phenotypic heterogeneity of the cerebral malformations might result from the involvement of CUL-4B in various cellular pathways essential for normal brain development. Accordingly, we show that CUL-4B interacts with WDR62, a protein in which variants were previously identified in patients with microcephaly and a wide range of MCD. This interaction might contribute to the development of cerebral malformations in patients with variants in CUL4B.

Original languageEnglish
Pages (from-to)106-117
Number of pages12
JournalHuman mutation
Volume36
Issue number1
DOIs
Publication statusPublished - 2015 Jan 1

Keywords

  • CUL4B
  • Cortical dysplasia
  • Hydrocephalus
  • Intellectual disability
  • Mutation
  • WDR62

ASJC Scopus subject areas

  • Genetics
  • Genetics(clinical)

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