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Mendeliome v1.1998 MED16 Mark Cleghorn gene: MED16 was added
gene: MED16 was added to Mendeliome. Sources: Other
Mode of inheritance for gene: MED16 was set to BIALLELIC, autosomal or pseudoautosomal
Phenotypes for gene: MED16 were set to complex neurodevelopmental disorder MONDO:0100038
Review for gene: MED16 was set to GREEN
Added comment: Charlotte Guillouet, Imagine institute Paris
ESHG presentation 4/6/24, unpublished

MED16 is part of tail of ‘mediator complex’
Plays a role in enhancer/promotor regions

Disruptive variants in other genes encoding proteins within this mediator complex (MED11/12/12/17/20, CDK8) are assoc w neurodevelopmental/neurodegenerative disorders

Cases
index family
Sibs (M/F) to consanguineous parents w NDD/mod ID, tetralogy of Fallot or VSD, bilat deafness, micrognathia, malar hypoplasia, dental AbN, pre auricular tags, hypoplastic nails, brachydactly
WES: biallelic MED16 p.Asp217Asn

Via genematcher
16 families total, 22 individuals, homozygous or compound het rare MED16 variants
Mixture of pLoF and missense variants

Motor delay in 16/17
DD or ID in 17/17
Speech delay in 15/15
6/19 ToF
7/19 other septal/aortic defects
6/18 deafness
11/18 microretrognathia
6/17 cleft palate
8/19 preauricular tags
9/20 puffy eyelids
12/20 nasal dysplasia (most commonly short columella w bulbous nasal tip)
7/20 corpus callosum anomalies

Not clear that functional work recapitulated phenotype as yet?
Immunofluroescence on HeLa cells transfected with variants observed ?conclusion
MED16 knockout mouse > growth delay, pre weaning lethality
MED16 knockout zebrafish > reduced body length, early death, no obvious craniofacial phenotype
Sources: Other
Mendeliome v1.817 MED11 Zornitza Stark Phenotypes for gene: MED11 were changed from neurodevelopmental disorder MONDO#0700092, MED11-related to Neurodegeneration with developmental delay, early respiratory failure, myoclonic seizures, and brain abnormalities, MIM# 620327
Mendeliome v1.816 MED11 Zornitza Stark reviewed gene: MED11: Rating: GREEN; Mode of pathogenicity: None; Publications: ; Phenotypes: Neurodegeneration with developmental delay, early respiratory failure, myoclonic seizures, and brain abnormalities, MIM# 620327; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v1.367 MED11 Ain Roesley Marked gene: MED11 as ready
Mendeliome v1.367 MED11 Ain Roesley Gene: med11 has been classified as Green List (High Evidence).
Mendeliome v1.367 MED11 Ain Roesley Classified gene: MED11 as Green List (high evidence)
Mendeliome v1.367 MED11 Ain Roesley Gene: med11 has been classified as Green List (High Evidence).
Mendeliome v1.366 MED11 Ain Roesley gene: MED11 was added
gene: MED11 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: MED11 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: MED11 were set to 36001086
Phenotypes for gene: MED11 were set to neurodevelopmental disorder MONDO#0700092, MED11-related
Review for gene: MED11 was set to GREEN
gene: MED11 was marked as current diagnostic
Added comment: 7 affected from 5 families (3x consang) with the same recurrent variant of p.(Arg109*).

Protein truncating, NOT NMD as proven by RT-PCR and western blot. Zebrafish knockout model recapitulates key clinical phenotypes

NO evidence of founder effect from haplotype analysis

7/7 cerebral dysgyria, cortical atrophy
5/7 limb contracture
4/7 epilepsy
3/7 families with IUGR
3/7 GDD
3/7 hearing loss
3/7 undescended testis
2/7 nystagmus
1/7 congenital cataract
Sources: Literature