NM_001370259.2:c.1348C>T

Variant names:

• chr11-64805036-G-A
• rs1114167509
• NM_001370259.2:c.1348C>T

Variant summary

Our verdict is Pathogenic. Variant got 13 ACMG points: 13P and 0B. PVS1 PM2 PP3 PP5_Moderate

The NM_001370259.2(MEN1):​c.1348C>T​(p.Gln450*) variant causes a stop gained, splice region change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Pathogenic (★).

• Frequency: Genomes: not found (cov: 34)
• Consequence: MEN1 NM_001370259.2 stop_gained, splice_region
• Scores: Splicing: ADA: 0.9954
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 6.39

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 Pathogenic. Variant got 13 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most 50 bp of the penultimate exon, not predicted to undergo nonsense mediated mRNA decay. There are 60 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage
• PP3: Splicing scoreres supports a deletorius effect: Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF. Scorers claiming Uncertain: max_spliceai. No scorers claiming Benign.
• PP5: Variant 11-64805036-G-A is Pathogenic according to our data. Variant chr11-64805036-G-A is described in ClinVar as [Pathogenic]. Clinvar id is 428050.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr11-64805036-G-A is described in Lovd as [Pathogenic]. Variant chr11-64805036-G-A is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MEN1	NM_001370259.2	c.1348C>T	p.Gln450*	stop_gained, splice_region_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.1348C>T	p.Gln450*	stop_gained, splice_region_variant	Exon 9 of 10	5	NM_001370259.2	ENSP00000394933.3

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Cov.: 41

GnomAD4 genome Cov.: 34

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

Hereditary cancer-predisposing syndrome Pathogenic:1

Dec 24, 2014

Ambry Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.Q450* pathogenic mutation (also known as c.1348C>T), located in coding exon 8 of the MEN1 gene, results from a C to T substitution at nucleotide position 1348. This changes the amino acid from a glutamine to a stop codon at the last amino acid position of coding exon 8. This pathogenic mutation has been reported in a 26 year old Japanese female diagnosed with MEN1 who had a history of multiple parathyroid lesions, a prolactinoma, and a lipoma (Hai N et al. Eur J Endocrinol. 1999 Nov;141(5):475-80). In addition to the clinical data presented in the literature, since premature stop codons are typically deleterious in nature, this alteration is interpreted as a disease-causing mutation (ACMG Recommendations for Standards for Interpretation and Reporting of Sequence Variations. Revision 2007. Genet Med. 2008;10:294). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.62	D
BayesDel_noAF	Pathogenic	0.62
CADD	Pathogenic	52
DANN	Uncertain	1.0
Eigen	Pathogenic	0.91
Eigen_PC	Pathogenic	0.72
FATHMM_MKL	Pathogenic	0.97	D
Vest4		0.95
GERP RS		4.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	0.80
SpliceAI score (max)		0.29		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.29		Position offset: 49

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

Publications

LitVar

Other links and lift over

dbSNP: rs1114167509; hg19: chr11-64572508;