rs386134247

Positions:

• chr11-64805645-TC-T
• chr11-64805645-TC-TCC

Variant summary

Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1 PM2 PP5_Very_Strong

The NM_001370259.2(MEN1):​c.1174delG​(p.Glu392fs) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Likely pathogenic (★★). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 32)
• Consequence: MEN1 NM_001370259.2 frameshift
• Clinical Significance: Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:4
• Conservation: PhyloP100: 2.16

Genes affected

MEN1 (HGNC:7010): (menin 1) This gene encodes menin, a tumor suppressor associated with a syndrome known as multiple endocrine neoplasia type 1. Menin is a scaffold protein that functions in histone modification and epigenetic gene regulation. It is thought to regulate several pathways and processes by altering chromatin structure through the modification of histones. [provided by RefSeq, May 2019]

MEN1 (HGNC:):

ACMG classification

Verdict is Pathogenic. Variant got 18 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 11-64805645-TC-T is Pathogenic according to our data. Variant chr11-64805645-TC-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 265238.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr11-64805645-TC-T is described in Lovd as [Pathogenic]. Variant chr11-64805645-TC-T is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MEN1	NM_001370259.2	c.1174delG	p.Glu392fs	frameshift_variant	8/10	ENST00000450708.7	NP_001357188.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MEN1	ENST00000450708.7	c.1174delG	p.Glu392fs	frameshift_variant	8/10	5	NM_001370259.2	ENSP00000394933.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:4

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Multiple endocrine neoplasia, type 1 Pathogenic:3

Pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Oct 24, 2019	This variant disrupts the C-terminus of the MEN1 protein. Other variant(s) that disrupt this region (p.Lys559Glufs*38) have been determined to be pathogenic (PMID: 10090472, Invitae). This suggests that variants that disrupt this region of the protein are likely to be causative of disease. This sequence change results in a premature translational stop signal in the MEN1 gene (p.Glu392Serfs*53). While this is not anticipated to result in nonsense mediated decay, it is expected to disrupt the last 219 amino acids of the MEN1 protein. For these reasons, this variant has been classified as Pathogenic. This variant has been observed in individual(s) with multiple endocrine neoplasia type 1 (PMID: 9215689). This variant is also known as 1280delG in the literature. ClinVar contains an entry for this variant (Variation ID: 265238). This variant is not present in population databases (ExAC no frequency). -
Pathogenic, criteria provided, single submitter	clinical testing	Department of Laboratory Medicine, Soonchunhyang University Seoul Hospital	Jan 23, 2018	- -
Pathogenic, criteria provided, single submitter	clinical testing	Laboratory of Molecular and Cytogenetics, Department of Anatomy, All India Institute of Medical Sciences (AIIMS)	May 10, 2023	- -

not provided Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

GeneDx

Mar 30, 2017

The c.1174delG variant has been reported previously (as 1280delG) in association with multiple endocrine neoplasia type 1 (Agarwal et al., 1997). The c.1174delG variant causes a frameshift starting with codon Glutamic acid 392, changes this amino acid to a Serine residue and creates a premature Stop codon at position 53 of the new reading frame, denoted p.Glu392SerfsX53. This variant is predicted to cause loss of normal protein function either through protein truncation or nonsense-mediated mRNA decay. The c.1174delG variant was not observed in approximately 6,500 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, indicating it is not a common benign variant in these populations. Based on currently available evidence, c.1174delG is a strong candidate for a pathogenic variant. However, the possibility it is a rare benign variant cannot be excluded. -

Computational scores

Source: dbNSFP v4.3

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs386134247; hg19: chr11-64573117;