ClinVar Miner

Submissions for variant NM_020779.4(WDR35):c.2590G>A (p.Ala864Thr)

gnomAD frequency: 0.00001  dbSNP: rs267607175
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories RCV000508347 SCV000605607 likely pathogenic not provided 2017-05-25 criteria provided, single submitter clinical testing The p.Ala875Thr variant was previously reported in trans with another WDR35 variant, c.2891del; p.Pro964fs, identified by whole exome analysis in a child with Sensenbrenner syndrome also known as cranioectodermal dysplasia (Gilissen 2010). At nine years of age that patient had small thorax, pectus excavatum, rhizomelic shortening of limbs, short and broad hands, bilateral sandal gap between first and second toe, hypertelorism, low-set simple ears and thin hair (Gilissen 2010). Additionally, functional in vitro study showed that p.Ala875Thr variant impaired IFT-A-mediated cargo transport to cilia (Fu 2016). The p.Ala875Thr variant (rs267607175) is not listed in gene-specific variant databases, nor has it been previously identified in our laboratory. It is listed in ClinVar (Variation ID 23) and it is listed in the Genome Aggregation Consortium (gnomAD) browser with an overall allele frequency of 0.0004 percent (identified on 1 European chromosome out of all 246,026 analyzed chromosomes). Alanine 875 is highly conserved considering 11 species (Alamut software v2.9.0) but computational programs predict mixed effect of this variant on the protein (SIFT: tolerated, PolyPhen-2: probably damaging and MutationTaster: disease causing).
OMIM RCV000000040 SCV000020183 pathogenic Cranioectodermal dysplasia 2 2010-09-10 no assertion criteria provided literature only

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