ClinVar Miner

Submissions for variant NM_203486.3(DLL3):c.805G>A (p.Gly269Arg)

gnomAD frequency: 0.00046  dbSNP: rs139297205
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Total submissions: 5
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
GeneDx RCV000521001 SCV000617034 uncertain significance not provided 2021-03-08 criteria provided, single submitter clinical testing In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; In-silico analysis, which includes splice predictors and evolutionary conservation, is inconclusive as to whether the variant alters gene splicing. In the absence of RNA/functional studies, the actual effect of this sequence change is unknown.; This variant is associated with the following publications: (PMID: 17041936, 23496422, 19154516)
Illumina Laboratory Services, Illumina RCV001134172 SCV001293901 benign Syndactyly 2017-04-27 criteria provided, single submitter clinical testing This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases was too high to be consistent with this variant causing disease. Therefore, this variant is classified as benign.
Illumina Laboratory Services, Illumina RCV001134173 SCV001293902 uncertain significance Spondylocostal dysostosis 1, autosomal recessive 2017-04-27 criteria provided, single submitter clinical testing This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance.
Labcorp Genetics (formerly Invitae), Labcorp RCV000521001 SCV002313318 uncertain significance not provided 2022-09-27 criteria provided, single submitter clinical testing This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 269 of the DLL3 protein (p.Gly269Arg). This variant is present in population databases (rs139297205, gnomAD 0.1%), and has an allele count higher than expected for a pathogenic variant. This missense change has been observed in individual(s) with congenital vertebral malformations (PMID: 17041936). ClinVar contains an entry for this variant (Variation ID: 449192). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0". The arginine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.
Department of Pathology and Laboratory Medicine, Sinai Health System RCV001134173 SCV005912973 uncertain significance Spondylocostal dysostosis 1, autosomal recessive 2021-07-30 criteria provided, single submitter research

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