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Mendeliome v1.1998 CEP76 Mark Cleghorn gene: CEP76 was added
gene: CEP76 was added to Mendeliome. Sources: Other
Mode of inheritance for gene: CEP76 was set to BIALLELIC, autosomal or pseudoautosomal
Phenotypes for gene: CEP76 were set to complex neurodevelopmental disorder MONDO:0100038; Joubert syndrome; Bardet-Biedl syndrome; retinitis pigmentosa
Penetrance for gene: CEP76 were set to unknown
Review for gene: CEP76 was set to GREEN
Added comment: Erica Davis, Stanley Manne Children’s research institute, Chicago
ESHG presentation 4/6/24, unpublished

CEP76 associated with syndromic ciliopathy

CEP76 localizes to centrioles and basal body primary cilia
Role in normal centriolar duplication

Index case
Bardet Biedl syndrome
Compound heterozygous pLoF variants in CEP76

Via Gene matcher
7 cases in 7 families- biallelic CEP76 and various clinical features within ciliopathy spectrum:
Obesity
Ocular phenotype
Structural brain anomalies
Renal?

3/7 families clinical Dx Joubert syndrome
1/7 BBS
1/7 GDD/ID NOS
2/7 retinitis pigmentosa (1 of these with learning difficulties)

Mixture of biallelic pLOF and missense variant

CEP76 knockout zebrafish model shows retinal phenotype w photoreceptor loss, similar to homozygous known BBS4 pathogenic variant

Cell based fx studies with missense variants above, consistent with centriolar duplication dysfunction
Sources: Other
Mendeliome v1.1894 BBS4 Andrew Coventry reviewed gene: BBS4: Rating: GREEN; Mode of pathogenicity: None; Publications: 11381270 12016587 10874630; Phenotypes: Bardet-Biedl syndrome 4 MIM#615982; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v1.1610 BBS4 Bryony Thompson reviewed gene: BBS4: Rating: RED; Mode of pathogenicity: None; Publications: 37588201; Phenotypes: autosomal dominant polycystic liver disease MONDO:0000447; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v1.1610 BBS4 Bryony Thompson Deleted their review
Mendeliome v0.8118 BBS4 Zornitza Stark Marked gene: BBS4 as ready
Mendeliome v0.8118 BBS4 Zornitza Stark Gene: bbs4 has been classified as Green List (High Evidence).
Mendeliome v0.8118 BBS4 Zornitza Stark Phenotypes for gene: BBS4 were changed from to Bardet-Biedl syndrome 4, MIM#615982; MONDO:0014433
Mendeliome v0.8117 BBS4 Zornitza Stark Publications for gene: BBS4 were set to
Mendeliome v0.8116 BBS4 Zornitza Stark Mode of inheritance for gene: BBS4 was changed from Unknown to BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.8115 BBS4 Zornitza Stark reviewed gene: BBS4: Rating: GREEN; Mode of pathogenicity: None; Publications: 12016587, 11381270; Phenotypes: Bardet-Biedl syndrome 4, MIM#615982, MONDO:0014433; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.0 BBS4 Zornitza Stark gene: BBS4 was added
gene: BBS4 was added to Mendeliome_VCGS. Sources: Expert Review Green,Victorian Clinical Genetics Services
Mode of inheritance for gene: BBS4 was set to Unknown