11-64804527-T-G

Variant names:

• chr11-64804527-T-G
• rs914488914
• NM_001370259.2:c.1640A>C

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 5P and 2B. PM1 PM2 PP2 BP4_Moderate

The NM_001370259.2(MEN1):​c.1640A>C​(p.Glu547Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign 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. E547G) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: MEN1 NM_001370259.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.11
• Publications: 0 publications found

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 Gene-Disease associations (from GenCC):

• multiple endocrine neoplasia type 1

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), G2P, ClinGen, Orphanet, Ambry Genetics
• familial isolated hyperparathyroidism

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• pituitary gigantism

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• hereditary pheochromocytoma-paraganglioma

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM1: In a hotspot region, there are 5 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 4 benign, 33 uncertain in NM_001370259.2
• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the MEN1 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 113 curated pathogenic missense variants (we use a threshold of 10). The gene has 20 curated benign missense variants. Trascript score misZ: 4.1921 (above the threshold of 3.09). GenCC associations: The gene is linked to multiple endocrine neoplasia type 1, hereditary pheochromocytoma-paraganglioma, pituitary gigantism, familial isolated hyperparathyroidism.
• BP4: Computational evidence support a benign effect (MetaRNN=0.19856897).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MEN1	NM_001370259.2	c.1640A>C	p.Glu547Ala	missense_variant	Exon 10 of 10	ENST00000450708.7	NP_001357188.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MEN1	ENST00000450708.7	c.1640A>C	p.Glu547Ala	missense_variant	Exon 10 of 10	5	NM_001370259.2	ENSP00000394933.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Multiple endocrine neoplasia, type 1 Uncertain:1

Dec 20, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces glutamic acid, which is acidic and polar, with alanine, which is neutral and non-polar, at codon 547 of the MEN1 protein (p.Glu547Ala). 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. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. ClinVar contains an entry for this variant (Variation ID: 1372733). This variant has not been reported in the literature in individuals affected with MEN1-related conditions. This variant is not present in population databases (gnomAD no frequency). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.074
BayesDel_addAF	Uncertain	0.034	T
BayesDel_noAF	Benign	-0.19
CADD	Benign	19
DANN	Benign	0.97
DEOGEN2	Benign	0.29	T;.;.;.;.;T;T;T;T
Eigen	Benign	-0.56
Eigen_PC	Benign	-0.36
FATHMM_MKL	Benign	0.49	N
LIST_S2	Benign	0.84	T;T;.;.;T;.;.;T;.
M_CAP	Pathogenic	0.65	D
MetaRNN	Benign	0.20	T;T;T;T;T;T;T;T;T
MetaSVM	Uncertain	0.70	D
MutationAssessor	Benign	-0.90	.;.;.;.;.;N;N;N;N
PhyloP100		2.1
PrimateAI	Uncertain	0.64	T
PROVEAN	Benign	-1.6	N;N;N;N;N;N;N;N;N
REVEL	Uncertain	0.48
Sift	Benign	0.13	T;T;T;T;T;T;T;T;T
Sift4G	Benign	0.33	T;T;T;T;T;T;T;T;T
Polyphen		0.0, 0.0010	.;B;B;B;B;B;B;B;B
Vest4		0.16
MutPred		0.38		.;.;.;.;.;Loss of solvent accessibility (P = 0.0769);Loss of solvent accessibility (P = 0.0769);Loss of solvent accessibility (P = 0.0769);Loss of solvent accessibility (P = 0.0769);
MVP		0.48
MPC		1.2
ClinPred		0.32	T
GERP RS		4.3
Varity_R		0.15
gMVP		0.37
Mutation Taster		=89/11	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs914488914; hg19: chr11-64571999;