ClinVar Miner

Submissions for variant NM_020806.5(GPHN):c.2108G>A (p.Arg703His)

dbSNP: rs2544478218
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Ambry Genetics RCV004981092 SCV005596660 uncertain significance Inborn genetic diseases 2024-10-01 criteria provided, single submitter clinical testing The c.2108G>A (p.R703H) alteration is located in exon 22 (coding exon 22) of the GPHN gene. This alteration results from a G to A substitution at nucleotide position 2108, causing the arginine (R) at amino acid position 703 to be replaced by a histidine (H). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear.
Labcorp Genetics (formerly Invitae), Labcorp RCV003841598 SCV004693066 uncertain significance Sulfite oxidase deficiency due to molybdenum cofactor deficiency type C 2023-06-18 criteria provided, single submitter clinical testing 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 GPHN protein function. This variant has not been reported in the literature in individuals affected with GPHN-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces arginine, which is basic and polar, with histidine, which is basic and polar, at codon 703 of the GPHN protein (p.Arg703His).

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