ClinVar Miner

Submissions for variant NM_000521.4(HEXB):c.1048C>G (p.His350Asp)

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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV002627930 SCV003502016 uncertain significance Sandhoff disease 2022-09-27 criteria provided, single submitter clinical testing This sequence change replaces histidine, which is basic and polar, with aspartic acid, which is acidic and polar, at codon 350 of the HEXB protein (p.His350Asp). This variant is present in population databases (rs751352339, gnomAD 0.0009%). This variant has not been reported in the literature in individuals affected with HEXB-related conditions. 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 HEXB protein function. 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.

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