rs759337318
Variant summary
Our verdict is Likely benign. Variant got -2 ACMG points: 3P and 5B. PM5PP2BP6BS2
The NM_001370259.2(MEN1):c.1012C>G(p.Leu338Val) variant causes a missense change. The variant allele was found at a frequency of 0.0000041 in 1,461,868 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. L338P) has been classified as Pathogenic.
Frequency
Consequence
NM_001370259.2 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -2 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
MEN1 | NM_001370259.2 | c.1012C>G | p.Leu338Val | missense_variant | Exon 7 of 10 | ENST00000450708.7 | NP_001357188.2 |
Ensembl
Frequencies
GnomAD3 genomes Cov.: 33
GnomAD3 exomes AF: 0.0000199 AC: 5AN: 251470Hom.: 0 AF XY: 0.00000736 AC XY: 1AN XY: 135908
GnomAD4 exome AF: 0.00000410 AC: 6AN: 1461868Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1AN XY: 727240
GnomAD4 genome Cov.: 33
ClinVar
Submissions by phenotype
Multiple endocrine neoplasia, type 1 Uncertain:3Benign:1
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This missense variant replaces leucine with valine at codon 338 of the MEN1 protein. Computational prediction suggests that this variant may have deleterious impact on protein structure and function (internally defined REVEL score threshold >= 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 MEN1-related disorders in the literature. This variant has been identified in 5/251470 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. -
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The MEN1 c.1012C>G (p.Leu338Val) missense change has a maximum population frequency of 0.01% in gnomAD v2.1.1 (https://gnomad.broadinstitute.org/). The in silico tool REVEL predicts a deleterious effect on protein function, but to our knowledge this prediction has not been confirmed by functional studies. To our knowledge, this variant has not been reported in individuals with multiple endocrine neoplasia type I. In summary, the evidence currently available is insufficient to determine the clinical significance of this variant. It has therefore been classified as of uncertain significance. -
not provided Uncertain:2
To the best of our knowledge, the variant has not been reported in individuals with MEN1-related conditions in the published literature. The frequency of this variant in the general population, 0.00014 (5/34574 chromosomes, http://gnomad.broadinstitute.org), is uninformative in assessment of its pathogenicity. Analysis of this variant using bioinformatics tools for the prediction of the effect of amino acid changes on protein structure and function yielded predictions that this variant is benign. Based on the available information, we are unable to determine the clinical significance of this variant. -
Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis indicates 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: 12874027, 9989505) -
Hereditary cancer-predisposing syndrome Benign:1
This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at