rs138374063

Positions:

chrX-120449054-T-C

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 0P and 7B. BP4_ModerateBP6BS2

The NM_002294.3(LAMP2):c.472A>G(p.Thr158Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000274 in 1,203,455 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 10 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000027 ( 0 hom., 0 hem., cov: 24)

Exomes 𝑓: 0.000027 ( 0 hom. 10 hem. )

Consequence

LAMP2
NM_002294.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:2

Conservation

PhyloP100: -0.131

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 Benign. Variant got -7 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.09538525).

BP6

Variant X-120449054-T-C is Benign according to our data. Variant chrX-120449054-T-C is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 44429.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=2, Uncertain_significance=2}.

BS2

High Hemizygotes in GnomAdExome4 at 10 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
LAMP2	NM_002294.3 linkuse as main transcript	c.472A>G	p.Thr158Ala	missense_variant	4/9	ENST00000200639.9	NP_002285.1
LAMP2	NM_001122606.1 linkuse as main transcript	c.472A>G	p.Thr158Ala	missense_variant	4/9		NP_001116078.1
LAMP2	NM_013995.2 linkuse as main transcript	c.472A>G	p.Thr158Ala	missense_variant	4/9		NP_054701.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
LAMP2	ENST00000200639.9 linkuse as main transcript	c.472A>G	p.Thr158Ala	missense_variant	4/9	1	NM_002294.3	ENSP00000200639	P3	P13473-1

Frequencies

GnomAD3 genomes

AF:

0.0000267

AC:

AN:

112327

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

34503

show subpopulations

Gnomad AFR

AF:

0.0000324

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000375

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000328

AC:

AN:

183029

Hom.:

AF XY:

0.0000296

AC XY:

AN XY:

67541

show subpopulations

Gnomad AFR exome

AF:

0.0000760

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:

0.0000625

Gnomad NFE exome

AF:

0.0000490

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000275

AC:

AN:

1091128

Hom.:

Cov.:

AF XY:

0.0000280

AC XY:

AN XY:

356618

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:

0.0000740

Gnomad4 NFE exome

AF:

0.0000323

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000267

AC:

AN:

112327

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

34503

show subpopulations

Gnomad4 AFR

AF:

0.0000324

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000375

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000583

Hom.:

Bravo

AF:

0.0000113

ESP6500AA

AF:

0.000261

AC:

ESP6500EA

AF:

0.000297

AC:

ExAC

AF:

0.0000247

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:2

Uncertain significance, no assertion criteria provided	clinical testing	Mayo Clinic Laboratories, Mayo Clinic	Nov 13, 2017	- -
Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Aug 28, 2023	In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge; This variant is associated with the following publications: (PMID: 27532257) -

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Jul 06, 2012

Variant classified as Uncertain Significance - Favor Benign. The Thr158Ala varia nt in LAMP2 has been identified in 2/6727 European American chromosomes from a b road population by the NHLBI Exome Sequencing Project (http://evs.gs.washington. edu/EVS; dbSNP rs138374063). Threonine (Thr) at position 158 is not conserved in mammals or evolutionarily distant species and elephant carries an alanine (Ala; this variant), suggesting that this change may be tolerated. In addition, compu tational analyses (biochemical amino acid properties, AlignGVGD, PolyPhen2, and SIFT) suggest that this variant may not impact the protein, though this informat ion is not predictive enough to rule out pathogenicity. In summary, the frequenc y of this variant and lack of amino acid conservation suggests that it may be mo re likely benign, but additional information is needed to fully assess its clini cal significance. -

Danon disease

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 18, 2023

- -

Cardiovascular phenotype

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 14, 2022

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.078

CardioboostCm

Benign

0.0048

BayesDel_addAF

Benign

-0.50

BayesDel_noAF

Benign

-0.77

CADD

Benign

8.4

DANN

Benign

0.80

DEOGEN2

Benign

0.31

.;T;.

FATHMM_MKL

Benign

0.066

LIST_S2

Benign

0.58

T;T;T

M_CAP

Benign

0.019

MetaRNN

Benign

0.095

T;T;T

MetaSVM

Benign

-0.97

MutationAssessor

Benign

1.9

L;L;L

MutationTaster

Benign

1.0

N;N;N;N;N

PrimateAI

Benign

0.33

PROVEAN

Benign

-1.1

N;N;N

REVEL

Benign

0.073

Sift

Benign

0.25

T;T;T

Sift4G

Benign

0.17

T;T;T

Polyphen

0.0060, 0.0020

.;B;B

Vest4

0.062

MVP

0.57

MPC

0.27

ClinPred

0.022

GERP RS

-4.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.10

gMVP

0.43

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

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