dbSNP rs727503117: LAMP2:p.Asp373Tyr (chrX-120431439-C-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_002294.3(LAMP2):c.1117G>T(p.Asp373Tyr) variant causes a missense change. The variant allele was found at a frequency of 0.00000274 in 1,096,328 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 1 hemizygotes in GnomAD. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 23)

Exomes 𝑓: 0.0000027 ( 0 hom. 1 hem. )

Consequence

LAMP2
NM_002294.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.32

Variant links:

Genes affected

LAMP2 (HGNC:6501): (lysosomal associated membrane protein 2) The protein encoded by this gene is a member of a family of membrane glycoproteins. This glycoprotein provides selectins with carbohydrate ligands. It may play a role in tumor cell metastasis. It may also function in the protection, maintenance, and adhesion of the lysosome. Alternative splicing of this gene results in multiple transcript variants encoding distinct proteins. [provided by RefSeq, Jul 2008]

LAMP2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LAMP2	NM_002294.3 link	c.1117G>T	p.Asp373Tyr	missense_variant	Exon 9 of 9	ENST00000200639.9	NP_002285.1	P13473-1
LAMP2	NM_001122606.1 link	c.1094-2813G>T		intron_variant	Intron 8 of 8		NP_001116078.1	P13473-3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
LAMP2	ENST00000200639.9 link	c.1117G>T	p.Asp373Tyr	missense_variant	Exon 9 of 9	1	NM_002294.3	ENSP00000200639.4		P13473-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000552

AC:

AN:

181117

Hom.:

AF XY:

0.00

AC XY:

AN XY:

67043

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000126

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000274

AC:

AN:

1096328

Hom.:

Cov.:

AF XY:

0.00000276

AC XY:

AN XY:

361916

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000357

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Cardiovascular phenotype

Uncertain:1

Oct 25, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.D373Y variant (also known as c.1117G>T), located in coding exon 9 of the LAMP2 gene, results from a G to T substitution at nucleotide position 1117. The aspartic acid at codon 373 is replaced by tyrosine, an amino acid with highly dissimilar properties. Based on data from gnomAD, the T allele has an overall frequency of <0.01% (1/181117) total alleles studied, with 0 hemizygote(s) observed. The highest observed frequency was <0.01% (1/79656) of European (non-Finnish) alleles. This amino acid position is well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.56

CardioboostCm

Benign

0.0061

BayesDel_addAF

Benign

-0.056

BayesDel_noAF

Benign

-0.32

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.37

FATHMM_MKL

Uncertain

0.97

LIST_S2

Uncertain

0.88

M_CAP

Pathogenic

0.53

MetaRNN

Uncertain

0.66

MetaSVM

Benign

-0.56

MutationAssessor

Pathogenic

3.0

PROVEAN

Pathogenic

-5.5

REVEL

Benign

0.28

Sift

Uncertain

0.0030

Sift4G

Uncertain

0.011

Polyphen

1.0

Vest4

0.45

MutPred

0.55

Gain of phosphorylation at D373 (P = 0.0403);

MVP

0.52

ClinPred

0.71

GERP RS

5.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.95

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over