chr10-43123702-G-A
Variant summary
Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.
The NM_020975.6(RET):c.2833G>A(p.Val945Met) variant causes a missense change. The variant allele was found at a frequency of 0.0000103 in 1,461,824 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V945L) has been classified as Uncertain significance.
Frequency
Consequence
NM_020975.6 missense
Scores
Clinical Significance
Conservation
Publications
- familial medullary thyroid carcinomaInheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, G2P
- multiple endocrine neoplasia type 2AInheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen, G2P
- multiple endocrine neoplasia type 2BInheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Orphanet, Labcorp Genetics (formerly Invitae), ClinGen
- pheochromocytomaInheritance: AD Classification: DEFINITIVE Submitted by: G2P
- Hirschsprung disease, susceptibility to, 1Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
- Haddad syndromeInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- Hirschsprung diseaseInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- renal agenesis, unilateralInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- bilateral renal agenesisInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
- renal agenesisInheritance: AR Classification: LIMITED Submitted by: G2P
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ACMG classification
Our verdict: Uncertain_significance. The variant received 0 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
RET | NM_020975.6 | c.2833G>A | p.Val945Met | missense_variant | Exon 17 of 20 | ENST00000355710.8 | NP_066124.1 |
Ensembl
Frequencies
GnomAD3 genomes Cov.: 33
GnomAD2 exomes AF: 0.0000159 AC: 4AN: 251480 AF XY: 0.0000147 show subpopulations
GnomAD4 exome AF: 0.0000103 AC: 15AN: 1461824Hom.: 0 Cov.: 32 AF XY: 0.00000825 AC XY: 6AN XY: 727214 show subpopulations
Age Distribution
GnomAD4 genome Cov.: 33
ClinVar
Submissions by phenotype
Multiple endocrine neoplasia, type 2 Uncertain:2
This sequence change replaces valine, which is neutral and non-polar, with methionine, which is neutral and non-polar, at codon 945 of the RET protein (p.Val945Met). This variant is present in population databases (rs587780811, gnomAD 0.004%). This missense change has been observed in individual(s) with pediatric cancer (PMID: 34771502). ClinVar contains an entry for this variant (Variation ID: 136113). 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 valine with methionine at codon 945 of the RET protein. Computational prediction is inconclusive regarding the impact of this variant on protein structure and function (internally defined REVEL score threshold 0.5 < inconclusive < 0.7, 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 been identified in 4/251480 chromosomes 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. -
Hereditary cancer-predisposing syndrome Uncertain:2
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The p.V945M variant (also known as c.2833G>A), located in coding exon 17 of the RET gene, results from a G to A substitution at nucleotide position 2833. The valine at codon 945 is replaced by methionine, an amino acid with highly similar properties. This amino acid position is well conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. 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). Based on the supporting evidence, the association of this alteration with Hirschsprung disease is unknown; however, the association of this alteration with MEN2 is unlikely. -
Multiple endocrine neoplasia type 2A Uncertain:1
This submission and the accompanying classification are no longer maintained by the submitter. For more information on current observations and classification, please contact variantquestions@myriad.com. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at