chr11-64807948-G-T

Position:

• chr11-64807948-G-T

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PM2 PP2 PP3_Strong PP5

The NM_001370259.2(MEN1):​c.597C>A​(p.His199Gln) 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 pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: MEN1 NM_001370259.2 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:1 U:1
• Conservation: PhyloP100: -0.468

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]

ACMG classification

Verdict is Likely_pathogenic. Variant got 8 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), MEN1. . Trascript score misZ 4.1921 (greater than threshold 3.09). GenCC has associacion of gene with multiple endocrine neoplasia type 1, pituitary gigantism, familial isolated hyperparathyroidism.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.985
• PP5: Variant 11-64807948-G-T is Pathogenic according to our data. Variant chr11-64807948-G-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 457328.We mark this variant Likely_pathogenic, oryginal submissions are: {Likely_pathogenic=1, Uncertain_significance=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MEN1	NM_001370259.2	c.597C>A	p.His199Gln	missense_variant	3/10	ENST00000450708.7	NP_001357188.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MEN1	ENST00000450708.7	c.597C>A	p.His199Gln	missense_variant	3/10	5	NM_001370259.2	ENSP00000394933	P3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:1 Uncertain:1

Revision: criteria provided, conflicting classifications

Submissions by phenotype

Hereditary cancer-predisposing syndrome Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 22, 2023

The p.H199Q variant (also known as c.597C>A), located in coding exon 2 of the MEN1 gene, results from a C to A substitution at nucleotide position 597. The histidine at codon 199 is replaced by glutamine, an amino acid with highly similar properties. This amino acid position is highly conserved in available vertebrate species. This alteration has been observed in at least one individual with a personal and/or family history that is consistent with MEN1-related disease (Ambry internal data). In addition, this alteration is predicted to be deleterious by in silico analysis. Based on the majority of available evidence to date, this variant is likely to be pathogenic. -

Multiple endocrine neoplasia, type 1 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

May 05, 2022

This sequence change replaces histidine, which is basic and polar, with glutamine, which is neutral and polar, at codon 199 of the MEN1 protein (p.His199Gln). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with clinical features of MEN1-related conditions (Invitae). ClinVar contains an entry for this variant (Variation ID: 457328). 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. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. 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. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.46	D
BayesDel_noAF	Pathogenic	0.42
CADD	Benign	18
DANN	Uncertain	0.99
DEOGEN2	Pathogenic	0.92	D;.;.;.;D;D;D;D;D;.;D
Eigen	Benign	-0.28
Eigen_PC	Benign	-0.46
FATHMM_MKL	Benign	0.24	N
LIST_S2	Uncertain	0.94	D;.;.;D;.;.;D;.;D;D;D
M_CAP	Pathogenic	0.90	D
MetaRNN	Pathogenic	0.98	D;D;D;D;D;D;D;D;D;D;D
MetaSVM	Pathogenic	1.1	D
MutationAssessor	Uncertain	2.5	.;.;.;.;M;M;M;M;.;.;.
MutationTaster	Benign	1.0	D;D;D;D;D;D;D;D;D;D
PrimateAI	Pathogenic	0.81	D
PROVEAN	Pathogenic	-6.6	D;D;D;D;D;D;D;D;D;D;D
REVEL	Pathogenic	0.81
Sift	Pathogenic	0.0	D;D;D;D;D;D;D;D;D;D;D
Sift4G	Uncertain	0.0040	D;D;D;D;D;D;D;D;.;D;D
Polyphen		1.0	.;D;D;D;D;D;D;D;.;.;.
Vest4		0.81
MutPred		0.94		.;.;.;.;Gain of disorder (P = 0.1303);Gain of disorder (P = 0.1303);Gain of disorder (P = 0.1303);Gain of disorder (P = 0.1303);.;.;.;
MVP		0.99
MPC		2.2
ClinPred		1.0	D
GERP RS		-3.8
Varity_R		0.95
gMVP		0.98

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.27		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.27		Position offset: -1

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

Publications

LitVar

Other links and lift over

dbSNP: rs150512958; hg19: chr11-64575420; COSMIC: COSV53641542; COSMIC: COSV53641542;