rs1366681125
Variant summary
Our verdict is Likely benign. Variant got -1 ACMG points: 0P and 1B. BP4
The NM_020975.6(RET):c.20G>A(p.Gly7Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000318 in 1,507,194 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).
Frequency
Consequence
NM_020975.6 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -1 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
RET | NM_020975.6 | c.20G>A | p.Gly7Asp | missense_variant | Exon 1 of 20 | ENST00000355710.8 | NP_066124.1 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000197 AC: 3AN: 151966Hom.: 0 Cov.: 35
GnomAD3 exomes AF: 0.0000186 AC: 2AN: 107412Hom.: 0 AF XY: 0.0000336 AC XY: 2AN XY: 59544
GnomAD4 exome AF: 0.0000332 AC: 45AN: 1355228Hom.: 0 Cov.: 30 AF XY: 0.0000299 AC XY: 20AN XY: 668446
GnomAD4 genome AF: 0.0000197 AC: 3AN: 151966Hom.: 0 Cov.: 35 AF XY: 0.0000269 AC XY: 2AN XY: 74258
ClinVar
Submissions by phenotype
Multiple endocrine neoplasia, type 2 Uncertain:2
This sequence change replaces glycine, which is neutral and non-polar, with aspartic acid, which is acidic and polar, at codon 7 of the RET protein (p.Gly7Asp). 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 RET-related conditions. ClinVar contains an entry for this variant (Variation ID: 486313). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. 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. -
This missense variant replaces glycine with aspartic acid at codon 7 of the RET protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with hereditary cancer in the literature. This variant has not been identified in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -
Multiple endocrine neoplasia type 2A;C0025269:Multiple endocrine neoplasia type 2B;C0031511:Pheochromocytoma;C1833921:Familial medullary thyroid carcinoma;C3888239:Hirschsprung disease, susceptibility to, 1 Uncertain:1
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Hirschsprung disease, susceptibility to, 1 Uncertain:1
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not provided Uncertain:1
Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge; This variant is associated with the following publications: (PMID: 29484121) -
Malignant tumor of breast Uncertain:1
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Hereditary cancer-predisposing syndrome Uncertain:1
The p.G7D variant (also known as c.20G>A), located in coding exon 1 of the RET gene, results from a G to A substitution at nucleotide position 20. The glycine at codon 7 is replaced by aspartic acid, an amino acid with similar properties. This amino acid position is not well conserved in available vertebrate species. Based on data from gnomAD, the frequency for this variant is above the maximum credible frequency for a MEN2-causing variant in this gene based on internally established thresholds (Karczewski et al. Nature. 2020 May;581(7809):434-443; Whiffin et al. Genet Med. 2017 10;19:1151-1158). In addition, the in silico prediction for this alteration is inconclusive. Based on the supporting evidence, the association of this alteration with Hirschsprung is unknown; however, the association of this alteration with MEN2 is unlikely. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at