11-64809766-C-T
Variant summary
Our verdict is Uncertain significance. The variant received 1 ACMG points: 5P and 4B. PP2PP3_StrongBS2
The NM_001370259.2(MEN1):c.344G>A(p.Arg115His) variant causes a missense change. The variant allele was found at a frequency of 0.00000372 in 1,613,990 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 (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R115G) has been classified as Uncertain significance.
Frequency
Consequence
NM_001370259.2 missense
Scores
Clinical Significance
Conservation
Publications
- multiple endocrine neoplasia type 1Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), G2P, ClinGen, Orphanet, Ambry Genetics
- familial isolated hyperparathyroidismInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- pituitary gigantismInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- hereditary pheochromocytoma-paragangliomaInheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
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ACMG classification
Our verdict: Uncertain_significance. The variant received 1 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| MEN1 | NM_001370259.2 | c.344G>A | p.Arg115His | missense_variant | Exon 2 of 10 | ENST00000450708.7 | NP_001357188.2 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152110Hom.: 0 Cov.: 31 show subpopulations
GnomAD4 exome AF: 0.00000342 AC: 5AN: 1461880Hom.: 0 Cov.: 32 AF XY: 0.00000413 AC XY: 3AN XY: 727238 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.00000657 AC: 1AN: 152110Hom.: 0 Cov.: 31 AF XY: 0.0000135 AC XY: 1AN XY: 74298 show subpopulations
ClinVar
Submissions by phenotype
Multiple endocrine neoplasia, type 1 Uncertain:2
This sequence change replaces arginine, which is basic and polar, with histidine, which is basic and polar, at codon 115 of the MEN1 protein (p.Arg115His). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with hereditary breast and/or ovarian cancer (PMID: 31159747). ClinVar contains an entry for this variant (Variation ID: 428047). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt MEN1 protein function with a positive predictive value of 95%. 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. -
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Hereditary cancer-predisposing syndrome Uncertain:2
The p.R115H variant (also known as c.344G>A) is located in coding exon 1 of the MEN1 gene. This alteration results from a G to A substitution at nucleotide position 344. The arginine at codon 115 is replaced by histidine, an amino acid with some highly similar properties. This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of p.R115H remains unclear. -
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not provided Uncertain:1
Not observed in large population cohorts (Lek et al., 2016); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Observed in an individual referred for hereditary cancer testing (Tsaousis 2019); This variant is associated with the following publications: (PMID: 31159747) -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at