ClinVar Miner

Submissions for variant NM_138387.4(G6PC3):c.821G>A (p.Arg274His)

gnomAD frequency: 0.00001  dbSNP: rs773183765
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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 RCV000692791 SCV000820634 uncertain significance Autosomal recessive severe congenital neutropenia due to G6PC3 deficiency 2025-02-03 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 274 of the G6PC3 protein (p.Arg274His). 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. This variant has not been reported in the literature in individuals affected with G6PC3-related conditions. ClinVar contains an entry for this variant (Variation ID: 571605). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed for this missense variant. However, the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on G6PC3 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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