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Complex craniosynostosis is associated with the 2p15p16.1 microdeletion syndrome
Author(s) -
Florisson Joyce M.G.,
Mathijssen Irene M.J.,
Dumee Belinda,
Hoogeboom Jeannette A.M.,
Poddighe Pino J.,
Oostra Ben A.,
Frijns Jean Pierre,
Koster Linda,
de Klein Annelies,
Eussen Bert,
de Vries Bert B.A.,
Swagemakers Sigrid,
van der Spek Peter J.,
Verkerk Annemieke J.M.H.
Publication year - 2013
Publication title -
american journal of medical genetics part a
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.064
H-Index - 112
eISSN - 1552-4833
pISSN - 1552-4825
DOI - 10.1002/ajmg.a.35632
Subject(s) - microcephaly , craniosynostosis , intellectual disability , microdeletion syndrome , fluorescence in situ hybridization , comparative genomic hybridization , breakpoint , genetics , copy number variation , snp array , biology , medicine , pediatrics , single nucleotide polymorphism , genome , gene , chromosomal translocation , chromosome , genotype
Abstract In a screening project of patients with (complex) craniosynostosis using genomic arrays, we identified two patients with craniosynostosis and microcephaly with a deletion in the 2p15p16.1 chromosomal region. This region has been associated with a new microdeletion syndrome, for which patients have various features in common, including microcephaly and intellectual disability. Deletions were identified using Affymetrix 250K SNP array and further characterized by fluorescence in situ hybridization (FISH) analysis and qPCR. The deletions in our two patients overlapped within the 2p15p16.1 microdeletion syndrome area and were 6.8 and 6.9 Mb in size, respectively. FISH and qPCR confirmed the presence of only one copy in this region. Finemapping of the breakpoints indicated precise borders in our patients and were further finemapped in two other previously reported patients. Clinical features of patients with deletions in the 2p15p16.1 region vary. Including data from our patients, now eight out of nine reported patients have microcephaly, one of the major features, and all had intellectual disability. The current reported two patients add different forms of craniosynostosis to the clinical spectrum of this recently recognized microdeletion syndrome. © 2013 Wiley Periodicals, Inc.