rs149155417

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_002294.3(LAMP2):c.741+11C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000617 in 1,192,854 control chromosomes in the GnomAD database, including 10 homozygotes. There are 230 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.00043 ( 0 hom., 13 hem., cov: 23)

Exomes 𝑓: 0.00064 ( 10 hom. 217 hem. )

Consequence

LAMP2
NM_002294.3 intron

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:7

Conservation

PhyloP100: 1.29

Publications

1 publications found

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 Gene-Disease associations (from GenCC):

Danon disease
Inheritance: XL Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, G2P, Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Orphanet

LAMP2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.82).

BP6

Variant X-120447830-G-A is Benign according to our data. Variant chrX-120447830-G-A is described in ClinVar as Benign. ClinVar VariationId is 44436.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population eas. GnomAdExome4 allele frequency = 0.000637 (688/1080332) while in subpopulation EAS AF = 0.0218 (658/30121). AF 95% confidence interval is 0.0205. There are 10 homozygotes in GnomAdExome4. There are 217 alleles in the male GnomAdExome4 subpopulation. Median coverage is 28. This position passed quality control check.

BS2

High Hemizygotes in GnomAd4 at 13 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	Effect	Exon rank	MANE	Protein
LAMP2	NM_002294.3 link	c.741+11C>T	intron_variant	Intron 5 of 8	ENST00000200639.9	NP_002285.1
LAMP2	NM_001122606.1 link	c.741+11C>T	intron_variant	Intron 5 of 8		NP_001116078.1
LAMP2	NM_013995.2 link	c.741+11C>T	intron_variant	Intron 5 of 8		NP_054701.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
LAMP2	ENST00000200639.9 link	c.741+11C>T		intron_variant	Intron 5 of 8	1	NM_002294.3	ENSP00000200639.4

Frequencies

GnomAD3 genomes

AF:

0.000427

AC:

AN:

112466

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.0131

Gnomad SAS

AF:

0.000364

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00101

AC:

185

AN:

182348

AF XY:

0.000911

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0132

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000667

GnomAD4 exome

AF:

0.000637

AC:

688

AN:

1080332

Hom.:

Cov.:

AF XY:

0.000624

AC XY:

217

AN XY:

347986

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

26059

American (AMR)

AF:

0.00

AC:

AN:

35063

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19263

East Asian (EAS)

AF:

0.0218

AC:

658

AN:

30121

South Asian (SAS)

AF:

0.0000560

AC:

AN:

53536

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40512

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4081

European-Non Finnish (NFE)

AF:

0.00000605

AC:

AN:

826160

Other (OTH)

AF:

0.000483

AC:

AN:

45537

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.491

Heterozygous variant carriers

109

136

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000427

AC:

AN:

112522

Hom.:

Cov.:

AF XY:

0.000375

AC XY:

AN XY:

34686

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

31007

American (AMR)

AF:

0.00

AC:

AN:

10656

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

2662

East Asian (EAS)

AF:

0.0131

AC:

AN:

3586

South Asian (SAS)

AF:

0.000365

AC:

AN:

2741

European-Finnish (FIN)

AF:

0.00

AC:

AN:

6146

Middle Eastern (MID)

AF:

0.00

AC:

AN:

218

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

53279

Other (OTH)

AF:

0.00

AC:

AN:

1540

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.495

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000260

Hom.:

Bravo

AF:

0.000612

ClinVar

Significance: Benign

Submissions summary: Benign:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:3

Nov 20, 2012

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

741+11C>T in intron 5 of LAMP2: This variant is not expected to have clinical si gnificance because it has been identified in 2.1% (9/428) Asian chromosomes from a broad population by the 1000 Genomes project (dbSNP rs149155417). -

Nov 04, 2019

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: LAMP2 c.741+11C>T alters a nucleotide located close to a canonical splice site and therefore could affect mRNA splicing, leading to a significantly altered protein sequence. 5/5 computational tools predict no significant impact on normal splicing. However, these predictions have yet to be confirmed by functional studies. The variant allele was found at a frequency of 0.001 in 182348 control chromosomes (gnomAD). The observed variant frequency is approximately 81 fold of the estimated maximal expected allele frequency for a pathogenic variant in LAMP2 causing Cardiomyopathy phenotype (1.3e-05), strongly suggesting that the variant is benign. To our knowledge, no occurrence of c.741+11C>T in individuals affected with Cardiomyopathy and no experimental evidence demonstrating its impact on protein function have been reported. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014. Based on the evidence outlined above, the variant was classified as benign. -

Clinical Genetics, Academic Medical Center

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Danon disease

Benign:2

Jan 31, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

not provided

Benign:2

Genome Diagnostics Laboratory, University Medical Center Utrecht

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Mar 03, 2015

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.82

CADD

Benign

7.2

(source)

DANN

Benign

0.47

PhyloP100

1.3

Mutation Taster

=100/0

polymorphism (auto)

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over