chr3-57913179-A-G

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS2

The NM_001377540.1(SLMAP):c.2042A>G(p.Lys681Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000384 in 1,576,078 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 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 0.00026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00040 ( 0 hom. )

Consequence

SLMAP
NM_001377540.1 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1

Conservation

PhyloP100: 2.22

Publications

5 publications found

Variant links:

Genes affected

SLMAP (HGNC:16643): (sarcolemma associated protein) This gene encodes a component of a conserved striatin-interacting phosphatase and kinase complex. Striatin family complexes participate in a variety of cellular processes including signaling, cell cycle control, cell migration, Golgi assembly, and apoptosis. The protein encoded by this gene is a coiled-coil, tail-anchored membrane protein with a single C-terminal transmembrane domain that is posttranslationally inserted into membranes. Mutations in this gene are associated with Brugada syndrome, a cardiac channelopathy. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2015]

SLMAP Gene-Disease associations (from GenCC):

Brugada syndrome
Inheritance: Unknown, AD Classification: SUPPORTIVE, LIMITED, NO_KNOWN Submitted by: Genomics England PanelApp, Orphanet, ClinGen

SLMAP links:

LOC105377103 (HGNC:):

LOC105377103 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.046085775).

BP6

Variant 3-57913179-A-G is Benign according to our data. Variant chr3-57913179-A-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 411199.

BS2

High AC in GnomAd4 at 39 Unknown,AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLMAP	NM_001377540.1 link	c.2042A>G	p.Lys681Arg	missense_variant	Exon 21 of 25	ENST00000671191.1	NP_001364469.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SLMAP	ENST00000671191.1 link	c.2042A>G	p.Lys681Arg	missense_variant	Exon 21 of 25		NM_001377540.1	ENSP00000499458.1

Frequencies

GnomAD3 genomes

AF:

0.000256

AC:

AN:

152238

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000393

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:

0.000382

Gnomad OTH

AF:

0.000955

GnomAD2 exomes

AF:

0.000228

AC:

AN:

249910

AF XY:

0.000244

show subpopulations

Gnomad AFR exome

AF:

0.0000617

Gnomad AMR exome

AF:

0.000146

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000462

Gnomad NFE exome

AF:

0.000407

Gnomad OTH exome

AF:

0.000657

GnomAD4 exome

AF:

0.000398

AC:

566

AN:

1423722

Hom.:

Cov.:

AF XY:

0.000371

AC XY:

263

AN XY:

709806

show subpopulations

African (AFR)

AF:

0.0000609

AC:

AN:

32852

American (AMR)

AF:

0.000113

AC:

AN:

44384

Ashkenazi Jewish (ASJ)

AF:

0.0000391

AC:

AN:

25592

East Asian (EAS)

AF:

0.00

AC:

AN:

39344

South Asian (SAS)

AF:

0.00

AC:

AN:

83208

European-Finnish (FIN)

AF:

0.0000381

AC:

AN:

52540

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5654

European-Non Finnish (NFE)

AF:

0.000496

AC:

536

AN:

1081316

Other (OTH)

AF:

0.000340

AC:

AN:

58832

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.458

Heterozygous variant carriers

116

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

110

<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:

0.000256

AC:

AN:

152356

Hom.:

Cov.:

AF XY:

0.000188

AC XY:

AN XY:

74496

show subpopulations

African (AFR)

AF:

0.000120

AC:

AN:

41586

American (AMR)

AF:

0.000392

AC:

AN:

15302

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5190

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000382

AC:

AN:

68036

Other (OTH)

AF:

0.000945

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.498

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

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:

0.000420

Hom.:

Bravo

AF:

0.000306

TwinsUK

AF:

0.000809

AC:

ALSPAC

AF:

0.000778

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.000165

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Brugada syndrome

Uncertain:1

Jan 27, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces lysine, which is basic and polar, with arginine, which is basic and polar, at codon 647 of the SLMAP protein (p.Lys647Arg). This variant is present in population databases (rs150439110, gnomAD 0.04%), and has an allele count higher than expected for a pathogenic variant. This missense change has been observed in individual(s) with clinical features of Brugada syndrome (PMID: 30847666). ClinVar contains an entry for this variant (Variation ID: 411199). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant¬†is likely to be tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

not specified

Benign:1

Jun 04, 2024

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

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: SLMAP c.1940A>G (p.Lys647Arg) results in a conservative amino acid change in the encoded protein sequence. Five of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.00023 in 249910 control chromosomes. The observed variant frequency is approximately 40 fold of the estimated maximal expected allele frequency for a pathogenic variant in SLMAP causing Arrhythmia phenotype (6.3e-06). c.1940A>G has been reported in the literature in individuals affected with Brugada syndrome (van Lint_2019). These report(s) do not provide unequivocal conclusions about association of the variant with Arrhythmia. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publication have been ascertained in the context of this evaluation (PMID: 30847666). ClinVar contains an entry for this variant (Variation ID: 411199). Based on the evidence outlined above, the variant was classified as likely benign. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.075

BayesDel_addAF

Benign

-0.27

BayesDel_noAF

Benign

-0.27

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.16

.;.;T;.;T;T

Eigen

Benign

0.16

Eigen_PC

Uncertain

0.24

FATHMM_MKL

Uncertain

0.86

LIST_S2

Benign

0.85

.;D;D;D;T;T

M_CAP

Benign

0.027

MetaRNN

Benign

0.046

T;T;T;T;T;T

MetaSVM

Benign

-0.67

MutationAssessor

Benign

1.4

.;.;L;.;.;.

PhyloP100

2.2

PrimateAI

Benign

0.41

PROVEAN

Benign

-0.74

N;N;N;N;N;N

REVEL

Benign

0.037

Sift

Uncertain

0.015

D;D;D;T;D;D

Sift4G

Benign

0.10

T;T;T;T;T;T

Polyphen

0.20

B;B;B;B;.;P

Vest4

0.084

MVP

0.70

MPC

0.16

ClinPred

0.063

GERP RS

4.9

Varity_R

0.13

gMVP

0.053

Mutation Taster

=85/15

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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