ClinVar Miner

Submissions for variant NM_018297.4(NGLY1):c.659G>A (p.Gly220Asp)

gnomAD frequency: 0.00013  dbSNP: rs748862974
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV000693243 SCV000821103 uncertain significance Congenital disorder of deglycosylation 2022-10-26 criteria provided, single submitter clinical testing This sequence change replaces glycine, which is neutral and non-polar, with aspartic acid, which is acidic and polar, at codon 220 of the NGLY1 protein (p.Gly220Asp). This variant is present in population databases (rs748862974, gnomAD 0.04%). This variant has not been reported in the literature in individuals affected with NGLY1-related conditions. ClinVar contains an entry for this variant (Variation ID: 571965). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. 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.
Fulgent Genetics, Fulgent Genetics RCV000693243 SCV000897084 uncertain significance Congenital disorder of deglycosylation 2018-10-31 criteria provided, single submitter clinical testing
Ambry Genetics RCV003163167 SCV003866644 uncertain significance Inborn genetic diseases 2023-03-06 criteria provided, single submitter clinical testing The c.659G>A (p.G220D) alteration is located in exon 5 (coding exon 5) of the NGLY1 gene. This alteration results from a G to A substitution at nucleotide position 659, causing the glycine (G) at amino acid position 220 to be replaced by an aspartic acid (D). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear.

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