Abstract:
:Holoprosencephaly is the incomplete separation of the forebrain during embryogenesis. Both genetic and environmental etiologies have been determined for holoprosencephaly; however, a genetic etiology is not found in most cases. In this report, we present two unrelated individuals with semilobar holoprosencephaly who have the identical de novo missense variant in the gene CCR4-NOT transcription complex, subunit 1 (CNOT1). The variant (c.1603C>T [p.Arg535Cys]) is predicted to be deleterious and is not present in public databases. CNOT1 has not been previously associated with holoprosencephaly or other brain malformations. In situ hybridization analyses of mouse embryos show that Cnot1 is expressed in the prosencephalic neural folds at gestational day 8.25 during the critical period for subsequent forebrain division. Combining human and mouse data, we show that CNOT1 is associated with incomplete forebrain division.
journal_name
Am J Hum Genetjournal_title
American journal of human geneticsauthors
Kruszka P,Berger SI,Weiss K,Everson JL,Martinez AF,Hong S,Anyane-Yeboa K,Lipinski RJ,Muenke Mdoi
10.1016/j.ajhg.2019.03.017subject
Has Abstractpub_date
2019-05-02 00:00:00pages
990-993issue
5eissn
0002-9297issn
1537-6605pii
S0002-9297(19)30113-2journal_volume
104pub_type
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