11-64805132-C-T
Variant summary
Our verdict is Pathogenic. The variant received 27 ACMG points: 27P and 0B. PS1_Very_StrongPM1PM2PM5PP2PP3_StrongPP5_Very_Strong
The NM_001370259.2(MEN1):c.1252G>A(p.Asp418Asn) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★). Another nucleotide change resulting in the same amino acid substitution has been previously reported as Pathogenic in ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D418H) has been classified as Likely pathogenic.
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: Pathogenic. The variant received 27 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| MEN1 | NM_001370259.2 | c.1252G>A | p.Asp418Asn | missense_variant | Exon 9 of 10 | ENST00000450708.7 | NP_001357188.2 |
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| MEN1 | ENST00000450708.7 | c.1252G>A | p.Asp418Asn | missense_variant | Exon 9 of 10 | 5 | NM_001370259.2 | ENSP00000394933.3 |
Frequencies
GnomAD3 genomes Cov.: 33
GnomAD4 exome Cov.: 36
GnomAD4 genome Cov.: 33
ClinVar
Submissions by phenotype
Multiple endocrine neoplasia, type 1 Pathogenic:6
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This sequence change replaces aspartic acid, which is acidic and polar, with asparagine, which is neutral and polar, at codon 418 of the MEN1 protein (p.Asp418Asn). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with multiple endocrine neoplasia type 1 (MEN1) (PMID: 9463336, 10762295, 11303512, 11836268, 12050235, 12112656, 12652570, 17766710). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 16703). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is expected to disrupt MEN1 protein function with a positive predictive value of 95%. Experimental studies have shown that this missense change affects MEN1 function (PMID: 15254225, 21819486). For these reasons, this variant has been classified as Pathogenic. -
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The p.Asp423Asn variant in MEN1 has been reported in least 4 individuals with ME N1 and segregated with disease in at least 8 relatives from 1 family (Turner 200 2, Vierimaa 2007, Crepin 2003). It was also absent from large population studies . In vitro functional studies provide some evidence that the p.Asp423Asn variant may impact protein function (Shimazu 2011, Yaguchi 2004). In summary, this vari ant meets criteria to be classified as pathogenic for MEN1 in an autosomal domin ant manner based upon segregation studies, absence from controls, and functional evidence studies. -
not provided Pathogenic:4
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This variant has been identified in multiple unrelated individuals with clinical features associated with this gene. This variant has not been reported in large, multi-ethnic general populations. (Genome Aggregation Database (gnomAD), Cambridge, MA (URL: http://gnomad.broadinstitute.org)) Assessment of experimental evidence suggests this variant results in abnormal protein function. (PMID: 21819486, 15254225) -
The MEN1 c.1252G>A; p.Asp418Asn variant (rs104894264) is reported in the literature in multiple individuals and families affected with multiple endocrine neoplasia type 1 syndrome (Basset 1998, Goroshi 2016, Kytola 2001, Verges 2002). Functional analyses show the variant protein is unstable and is rapidly degraded by the ubiquitin-proteasome pathway (Shimazu 2011, Yaguchi 2004). This variant is reported in ClinVar (Variation ID: 16703), and is absent from the Genome Aggregation Database, indicating it is not a common polymorphism. The aspartic acid at codon 418 is highly conserved, and computational analyses predict that this variant is deleterious (REVEL: 0.891). Based on available information, this variant is considered to be pathogenic. References: Bassett JH et al. Characterization of mutations in patients with multiple endocrine neoplasia type 1. Am J Hum Genet. 1998 Feb;62(2):232-44. PMID: 9463336. Goroshi M et al. Multiple endocrine neoplasia type 1 syndrome: single centre experience from western India. Fam Cancer. 2016 Oct;15(4):617-24. PMID: 26905068. Kytola S et al. Founder effect in multiple endocrine neoplasia type 1 (MEN 1) in Finland. J Med Genet. 2001 Mar;38(3):185-9. PMID: 11303512. Shimazu S et al. Correlation of mutant menin stability with clinical expression of multiple endocrine neoplasia type 1 and its incomplete forms. Cancer Sci. 2011 Nov;102(11):2097-102. PMID: 21819486. Verges B et al. Pituitary disease in MEN type 1 (MEN1): data from the France-Belgium MEN1 multicenter study. J Clin Endocrinol Metab. 2002 Feb;87(2):457-65. PMID: 11836268. Yaguchi H et al. Menin missense mutants associated with multiple endocrine neoplasia type 1 are rapidly degraded via the ubiquitin-proteasome pathway. Mol Cell Biol. 2004 Aug;24(15):6569-80. PMID: 15254225. -
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Hereditary cancer-predisposing syndrome Pathogenic:1
The p.D418N pathogenic mutation (also known as c.1252G>A), located in coding exon 8 of the MEN1 gene, results from a G to A substitution at nucleotide position 1252. The aspartic acid at codon 418 is replaced by asparagine, an amino acid with highly similar properties. This pathogenic mutation was previously reported in two unrelated probands diagnosed with MEN1, with a history of parathyroid tumors and a carcinoid tumor, and was absent in 55 unrelated normal controls (Bassett et al. Am. J. Hum. Genet. 1998;62:232-244). This mutation was also seen to co-segregate with disease in a family with tumors of the parathyroid gland, endocrine pancreas, and anterior pituitary (Giraud et al. Am. J. Hum. Genet.1998 Aug;63(2):455-67), as well as in a family with parathyroid carcinoma, adrenal lesions, and pancreatic neuroendocrine tumors (Cinque L et al. Endocr Connect. 2017 Nov;6(8):886-891). In another study, this mutation is noted to be involved in the JunD-binding domains and is predicted to prevent menin's repressive action on JunD-mediated transcription (Turner et al. J Clin Endocrinol Metab. 2002;87:2688-2693). Furthermore, other functional studies have demonstrated reduced stability and expression of the menin protein compared with wild-type (Shimazu S et al. Cancer Sci. 2011 Nov;102(11):2097-102; Yaguchi Het al. Mol. Cell. Biol. 2004 Aug; 24(15):6569-80). 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, this alteration is interpreted as a disease-causing mutation. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at