rs1256465004

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM1PM2PP3

The NM_001387283.1(SMARCA4):c.2858A>G(p.Lys953Arg) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,459,498 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

SMARCA4
NM_001387283.1 missense, splice_region

Scores

Splicing: ADA: 0.9937

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 3.17

Publications

0 publications found

Variant links:

Genes affected

SMARCA4 (HGNC:11100): (SWI/SNF related, matrix associated, actin dependent regulator of chromatin, subfamily a, member 4) The protein encoded by this gene is a member of the SWI/SNF family of proteins and is similar to the brahma protein of Drosophila. Members of this family have helicase and ATPase activities and are thought to regulate transcription of certain genes by altering the chromatin structure around those genes. The encoded protein is part of the large ATP-dependent chromatin remodeling complex SNF/SWI, which is required for transcriptional activation of genes normally repressed by chromatin. In addition, this protein can bind BRCA1, as well as regulate the expression of the tumorigenic protein CD44. Mutations in this gene cause rhabdoid tumor predisposition syndrome type 2. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2012]

SMARCA4 Gene-Disease associations (from GenCC):

Coffin-Siris syndrome
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet, Illumina
intellectual disability, autosomal dominant 16
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
rhabdoid tumor predisposition syndrome 2
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, ClinGen, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), G2P
uterine corpus sarcoma
Inheritance: AR Classification: MODERATE Submitted by: Genomics England PanelApp
familial rhabdoid tumor
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
hereditary nonpolyposis colon cancer
Inheritance: AD Classification: LIMITED Submitted by: ClinGen

SMARCA4 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

PM1

In a hotspot region, there are 4 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 8 uncertain in NM_001387283.1

PM2

Very rare variant in population databases, with high coverage;

PP3

Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF, max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SMARCA4	NM_001387283.1 link	c.2858A>G	p.Lys953Arg	missense_variant, splice_region_variant	Exon 19 of 36	ENST00000646693.2	NP_001374212.1
SMARCA4	NM_003072.5 link	c.2858A>G	p.Lys953Arg	missense_variant, splice_region_variant	Exon 19 of 35	ENST00000344626.10	NP_003063.2	P51532-1A7E2E1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
SMARCA4	ENST00000646693.2 link	c.2858A>G	p.Lys953Arg	missense_variant, splice_region_variant	Exon 19 of 36		NM_001387283.1	ENSP00000495368.1	Q9HBD4
SMARCA4	ENST00000344626.10 link	c.2858A>G	p.Lys953Arg	missense_variant, splice_region_variant	Exon 19 of 35	1	NM_003072.5	ENSP00000343896.4	P51532-1
SMARCA4	ENST00000643549.1 link	c.2858A>G	p.Lys953Arg	missense_variant, splice_region_variant	Exon 19 of 35			ENSP00000493975.1	A0A2R8Y4P4
SMARCA4	ENST00000541122.6 link	c.2858A>G	p.Lys953Arg	missense_variant, splice_region_variant	Exon 20 of 35	5		ENSP00000445036.2	P51532-4
SMARCA4	ENST00000643296.1 link	c.2858A>G	p.Lys953Arg	missense_variant, splice_region_variant	Exon 19 of 34			ENSP00000496635.1	P51532-4
SMARCA4	ENST00000644737.1 link	c.2858A>G	p.Lys953Arg	missense_variant, splice_region_variant	Exon 19 of 34			ENSP00000495548.1	P51532-4
SMARCA4	ENST00000589677.5 link	c.2858A>G	p.Lys953Arg	missense_variant, splice_region_variant	Exon 20 of 35	5		ENSP00000464778.1	P51532-3
SMARCA4	ENST00000643995.1 link	c.2270A>G	p.Lys757Arg	missense_variant, splice_region_variant	Exon 16 of 32			ENSP00000496004.1	A0A2R8YGG3
SMARCA4	ENST00000644963.1 link	c.1502A>G	p.Lys501Arg	missense_variant, splice_region_variant	Exon 12 of 28			ENSP00000495599.1	A0A2R8YG32
SMARCA4	ENST00000644065.1 link	c.1583A>G	p.Lys528Arg	missense_variant, splice_region_variant	Exon 12 of 27			ENSP00000493615.1	A0A2R8Y440
SMARCA4	ENST00000642350.1 link	c.1343A>G	p.Lys448Arg	missense_variant, splice_region_variant	Exon 11 of 27			ENSP00000495355.1	A0A2R8Y6N0
SMARCA4	ENST00000643857.1 link	c.1211A>G	p.Lys404Arg	missense_variant, splice_region_variant	Exon 10 of 25			ENSP00000494159.1	A0A2R8Y526

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000401

AC:

AN:

249532

AF XY:

0.00000741

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000893

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1459498

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726056

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33422

American (AMR)

AF:

0.00

AC:

AN:

44718

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86172

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52924

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4306

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111902

Other (OTH)

AF:

0.00

AC:

AN:

60222

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

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Rhabdoid tumor predisposition syndrome 2

Uncertain:1

Mar 19, 2024

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 953 of the SMARCA4 protein (p.Lys953Arg). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with SMARCA4-related conditions. ClinVar contains an entry for this variant (Variation ID: 470322). 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. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. 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. -

Hereditary cancer-predisposing syndrome

Uncertain:1

May 24, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The p.K953R variant (also known as c.2858A>G), located in coding exon 18 of the SMARCA4 gene, results from an A to G substitution at nucleotide position 2858. The lysine at codon 953 is replaced by arginine, an amino acid with highly similar properties. This variant has been detected in multiple individuals with no reported features of Coffin-Siris syndrome (Ambry internal data). This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this variant is inconclusive.. Based on the supporting evidence, the association of this alteration with rhabdoid tumor predisposition syndrome is unknown; however, the association of this alteration with Coffin-Siris syndrome is unlikely. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.19

BayesDel_addAF

Uncertain

0.11

BayesDel_noAF

Uncertain

-0.080

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Pathogenic

0.82

D;.;D;.;.;.;.;.;.;.;D;.;.;.;.;.;T;D;.;.;.;.

Eigen

Benign

-0.36

Eigen_PC

Benign

-0.31

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.88

.;D;.;.;.;.;D;.;.;.;D;.;D;D;D;D;D;D;D;D;D;D

M_CAP

Pathogenic

0.50

MetaRNN

Benign

0.29

T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Uncertain

0.31

MutationAssessor

Benign

0.83

L;.;.;.;L;L;.;L;L;L;L;L;L;L;L;L;.;.;.;.;.;.

PhyloP100

3.2

PrimateAI

Pathogenic

0.86

PROVEAN

Benign

-1.9

N;.;.;.;.;.;.;.;.;.;N;.;N;.;N;.;.;N;.;.;.;.

REVEL

Uncertain

0.48

Sift

Benign

0.31

T;.;.;.;.;.;.;.;.;.;T;.;T;.;T;.;.;T;.;.;.;.

Sift4G

Benign

0.24

T;.;.;.;.;.;.;.;.;.;T;.;T;T;T;T;T;T;.;.;.;.

Polyphen

0.12

B;.;P;.;.;.;.;.;.;.;B;.;.;.;.;.;.;P;.;.;.;.

Vest4

0.32

MutPred

0.45

Loss of ubiquitination at K953 (P = 0.0041);Loss of ubiquitination at K953 (P = 0.0041);Loss of ubiquitination at K953 (P = 0.0041);Loss of ubiquitination at K953 (P = 0.0041);Loss of ubiquitination at K953 (P = 0.0041);Loss of ubiquitination at K953 (P = 0.0041);Loss of ubiquitination at K953 (P = 0.0041);Loss of ubiquitination at K953 (P = 0.0041);Loss of ubiquitination at K953 (P = 0.0041);Loss of ubiquitination at K953 (P = 0.0041);Loss of ubiquitination at K953 (P = 0.0041);Loss of ubiquitination at K953 (P = 0.0041);Loss of ubiquitination at K953 (P = 0.0041);Loss of ubiquitination at K953 (P = 0.0041);Loss of ubiquitination at K953 (P = 0.0041);Loss of ubiquitination at K953 (P = 0.0041);.;Loss of ubiquitination at K953 (P = 0.0041);.;.;.;.;

MVP

0.84

MPC

1.6

ClinPred

0.27

GERP RS

3.5

PromoterAI

-0.095

Neutral

(source)

Varity_R

0.10

gMVP

0.92

Mutation Taster

=50/50

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

0.99

dbscSNV1_RF

Pathogenic

0.84

SpliceAI score (max)

0.60

Details are displayed if max score is > 0.2

DS_DG_spliceai

0.60

Position offset: 39

DS_DL_spliceai

0.27

Position offset: 1

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

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over