Genetic Variant LAMP1:p.Arg8Gly (chr13-113297456-C-G) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_005561.4(LAMP1):c.22C>G(p.Arg8Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000169 in 1,180,738 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 9.7e-7 ( 0 hom. )

Consequence

LAMP1
NM_005561.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.50

Publications

0 publications found

Variant links:

Genes affected

LAMP1 (HGNC:6499): (lysosomal associated membrane protein 1) The protein encoded by this gene is a member of a family of membrane glycoproteins. This glycoprotein provides selectins with carbohydrate ligands. It may also play a role in tumor cell metastasis. [provided by RefSeq, Jul 2008]

LAMP1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 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
LAMP1	NM_005561.4 link	c.22C>G	p.Arg8Gly	missense_variant	Exon 1 of 9	ENST00000332556.5	NP_005552.3	P11279-1A0A024RDY3
LAMP1	XM_047430302.1 link	c.-287C>G		upstream_gene_variant			XP_047286258.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
LAMP1	ENST00000332556.5 link	c.22C>G	p.Arg8Gly	missense_variant	Exon 1 of 9	1	NM_005561.4	ENSP00000333298.4		P11279-1

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

151998

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:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

9.72e-7

AC:

AN:

1028740

Hom.:

Cov.:

AF XY:

0.00000201

AC XY:

AN XY:

497626

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

21374

American (AMR)

AF:

0.00

AC:

AN:

9084

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

14070

East Asian (EAS)

AF:

0.00

AC:

AN:

26444

South Asian (SAS)

AF:

0.00

AC:

AN:

25474

European-Finnish (FIN)

AF:

0.00

AC:

AN:

21924

Middle Eastern (MID)

AF:

0.00

AC:

AN:

2822

European-Non Finnish (NFE)

AF:

0.00000116

AC:

AN:

865776

Other (OTH)

AF:

0.00

AC:

AN:

41772

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.625

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00000658

AC:

AN:

151998

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74256

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41446

American (AMR)

AF:

0.00

AC:

AN:

15262

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.00

AC:

AN:

4838

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10518

Middle Eastern (MID)

AF:

0.00

AC:

AN:

314

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

67958

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 26, 2022

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.22C>G (p.R8G) alteration is located in exon 1 (coding exon 1) of the LAMP1 gene. This alteration results from a C to G substitution at nucleotide position 22, causing the arginine (R) at amino acid position 8 to be replaced by a glycine (G). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.14

BayesDel_addAF

Benign

-0.095

BayesDel_noAF

Benign

-0.37

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.45

Eigen

Benign

0.095

Eigen_PC

Benign

0.063

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Benign

0.48

M_CAP

Pathogenic

0.79

MetaRNN

Uncertain

0.44

MetaSVM

Benign

-0.91

MutationAssessor

Benign

0.0

PhyloP100

1.5

PrimateAI

Uncertain

0.77

PROVEAN

Benign

-2.1

REVEL

Benign

0.15

Sift

Uncertain

0.016

Sift4G

Uncertain

0.050

Polyphen

0.89

Vest4

0.23

MutPred

0.32

Loss of methylation at R8 (P = 0.0611);

MVP

0.22

MPC

0.91

ClinPred

0.81

GERP RS

3.2

PromoterAI

-0.019

Neutral

(source)

Varity_R

0.28

gMVP

0.30

Mutation Taster

=88/12

polymorphism

(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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chr13-113297456-C-G

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over