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Intellectual disability - microarray and sequencing v2.555 BRD4 Konstantinos Varvagiannis gene: BRD4 was added
gene: BRD4 was added to Intellectual disability. Sources: Literature,Expert Review
Mode of inheritance for gene: BRD4 was set to MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
Publications for gene: BRD4 were set to 29379197; 30055032; 30302754
Phenotypes for gene: BRD4 were set to Intellectual disability; Microcephaly; Abnormal heart morphology; Abnormality of the face
Penetrance for gene: BRD4 were set to unknown
Review for gene: BRD4 was set to GREEN
gene: BRD4 was marked as current diagnostic
Added comment: PMID: 29379197 reports on 3 unrelated individuals with de novo mutations in BRD4 and a Cornelia de Lange-like phenotype. One of these individuals was a DDD study participant (DDD4K.04273). A further (fourth) individual had a 1.04 Mb deletion encompassing BRD4 (and 28 other genes) and presented with a similar phenotype.

Appart from intellectual disability which was a universal feature common features included a CdLS-like appearance (3/4), microcephaly (3/4) and cardiac malformations (VSD in 2/4).

Review of published patients with multigenic deletions spanning also BRD4 support a CdLS-like phenotype as well as haploinsufficiency as the underlying mechanism.

As the authors note, mice heterozygous for loss-of-function mutations in BRD4 show CdLS like features.
Functional studies performed demonstrated association of BRD4 with NIPBL with colocalization (/shared binding) to super-enhancers and co-regulation of gene expression.

The variants reported in this study included a missense as well as 2 frameshift mutations.

PMIDs: 30055032 and 30302754 report further patients with deletions spanning BRD4 and review the previously published patients.

BRD4 is included in gene panels for intellectual disability offered by different diagnostic laboratories.

As a result this gene can be considered for inclusion in this panel as green.
Sources: Literature, Expert Review
Intellectual disability - microarray and sequencing v2.468 NIPBL Louise Daugherty Source Victorian Clinical Genetics Services was added to NIPBL.
Intellectual disability - microarray and sequencing NIPBL BRIDGE consortium edited their review of NIPBL
Intellectual disability - microarray and sequencing NIPBL BRIDGE consortium edited their review of NIPBL
Intellectual disability - microarray and sequencing NIPBL BRIDGE consortium reviewed NIPBL