ClinVar Miner

Submissions for variant NM_022552.5(DNMT3A):c.2063G>A (p.Arg688His)

gnomAD frequency: 0.00001  dbSNP: rs369713081
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV000805932 SCV000945907 uncertain significance Tatton-Brown-Rahman overgrowth syndrome 2023-07-07 criteria provided, single submitter clinical testing This sequence change replaces arginine, which is basic and polar, with histidine, which is basic and polar, at codon 688 of the DNMT3A protein (p.Arg688His). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. 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. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt DNMT3A protein function. ClinVar contains an entry for this variant (Variation ID: 650730). This missense change has been observed in individual(s) with clinical features of Tatton-Brown-Rahman syndrome (PMID: 34092059, 34315901).
Ambry Genetics RCV001267190 SCV001445371 uncertain significance Inborn genetic diseases 2017-11-17 criteria provided, single submitter clinical testing
GeneDx RCV001567102 SCV001790733 pathogenic not provided 2020-06-08 criteria provided, single submitter clinical testing In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge

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