rs763295929
Variant summary
Our verdict is Uncertain significance. Variant got 1 ACMG points: 1P and 0B. PP3
The NM_020975.6(RET):c.350C>A(p.Pro117His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000217 in 1,614,022 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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 Uncertain_significance. Variant got 1 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
RET | NM_020975.6 | c.350C>A | p.Pro117His | missense_variant | Exon 3 of 20 | ENST00000355710.8 | NP_066124.1 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152230Hom.: 0 Cov.: 33
GnomAD3 exomes AF: 0.0000120 AC: 3AN: 250788Hom.: 0 AF XY: 0.0000147 AC XY: 2AN XY: 135614
GnomAD4 exome AF: 0.0000233 AC: 34AN: 1461792Hom.: 0 Cov.: 32 AF XY: 0.0000165 AC XY: 12AN XY: 727206
GnomAD4 genome AF: 0.00000657 AC: 1AN: 152230Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0AN XY: 74368
ClinVar
Submissions by phenotype
Multiple endocrine neoplasia, type 2 Uncertain:2
This sequence change replaces proline, which is neutral and non-polar, with histidine, which is basic and polar, at codon 117 of the RET protein (p.Pro117His). This variant is present in population databases (rs763295929, gnomAD 0.002%). 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: 543735). 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 proline with histidine at codon 117 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 been reported in an individual affected with acute lymphoblastic leukemia (PMID: 32084258). This variant has been identified in 3/250788 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. -
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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Hereditary cancer-predisposing syndrome Uncertain:1
The p.P117H variant (also known as c.350C>A), located in coding exon 3 of the RET gene, results from a C to A substitution at nucleotide position 350. The proline at codon 117 is replaced by histidine, an amino acid with similar properties. In a study of whole-exome sequencing in patients with features of Cowden syndrome (CS) or Bannayan-Riley-Ruvalcaba syndrome (BRRS) and negative PTEN testing, this alteration was identified in 0/87 patients with CS or BRRS and 1/3476 patients from The Cancer Genome Atlas (TCGA) (Yehia L et al. PLoS Genet, 2018 04;14:e1007352). 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). This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. 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. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at