Rare multisystem ciliopathy disorders
Gene: C21orf2Comment on list classification: Updated rating from Grey to Green: Two Green expert reviews, plus recent literature evidence for biallelic C21orf2 variants involved in Jeune syndrome (PMID:26167768).Created: 16 Oct 2018, 2:46 p.m.
Comment on mode of inheritance: Biallelic MOI confirmed by OMIM and DD-G2P.Created: 16 Oct 2018, 2:29 p.m.
Added new-gene-name tag: new approved HGNC gene symbol is CFAP410.Created: 16 Oct 2018, 2:25 p.m.
C21ORF2 first reported as a cause of autosomal recessive cone-rod dystrophy (a homozygous
splicing mutation), but it was a single family (23105016). This gene was then identified as a cilial gene in a Nature Genetics paper (26167768), using a genome-wide siRNA knockdown strategy for ciliogenesis. Included within this paper were four families, all of whom had homozygous or compound heterozygous mutations and a spectrum of clinical phenotypes including retinal dystrophy with additional thoracic outlet features in some. Most recently another paper has described axial SMD in cases with mutations in this gene.Created: 16 Sep 2018, 7:08 p.m.
Mode of inheritance
BIALLELIC, autosomal or pseudoautosomal
Phenotypes
Axial Spondylometaphyseal Dysplasia (axial SMD); Jeune Syndrome; Retinal Dystrophy
Publications
Multiple affected individuals from unrelated families reported with bi-allelic variants in this gene, associated with a skeletal/retinal phenotype consistent with a ciliopathy.Created: 3 Aug 2018, 6:47 a.m.
Mode of inheritance
BIALLELIC, autosomal or pseudoautosomal
Phenotypes
Spondylometaphyseal dysplasia, axial, MIM#602271
Publications
Variants in this GENE are reported as part of current diagnostic practice
Gene: c21orf2 has been classified as Green List (High Evidence).
Phenotypes for gene: C21orf2 were changed from Retinal dystrophy with macular staphyloma, 617547; Spondylometaphyseal dysplasia, axial, 602271; Jeune Syndrome to Jeune asphyxiating thoracic dystrophy (JATD); Retinal dystrophy with macular staphyloma, 617547; Spondylometaphyseal dysplasia, axial, 602271; Jeune Syndrome
Phenotypes for gene: C21orf2 were changed from Spondylometaphyseal dysplasia, axial, MIM#602271 to Retinal dystrophy with macular staphyloma, 617547; Spondylometaphyseal dysplasia, axial, 602271; Jeune Syndrome
Mode of inheritance for gene: C21orf2 was changed from BIALLELIC, autosomal or pseudoautosomal to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: C21orf2 were set to 27548899; 26974433; 26167768; 23105016
Publications for gene: C21orf2 were set to 27548899; 26974433; 26167768
Publications for gene: C21orf2 were set to 27548899, 26974433, 26167768
Tag new-gene-name tag was added to gene: C21orf2.
C21orf2 was added to Rare multisystem ciliopathy disorders panel. Sources: Expert list
C21orf2 was created by Zornitza Stark