rs1366085446

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

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

The NM_001387283.1(SMARCA4):c.259G>A(p.Asp87Asn) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,812 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D87H) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

SMARCA4
NM_001387283.1 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 9.96

Publications

1 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 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
SMARCA4	NM_001387283.1 link	c.259G>A	p.Asp87Asn	missense_variant	Exon 3 of 36	ENST00000646693.2	NP_001374212.1
SMARCA4	NM_003072.5 link	c.259G>A	p.Asp87Asn	missense_variant	Exon 3 of 35	ENST00000344626.10	NP_003063.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein
SMARCA4	ENST00000646693.2 link	c.259G>A	p.Asp87Asn	missense_variant	Exon 3 of 36		NM_001387283.1	ENSP00000495368.1
SMARCA4	ENST00000344626.10 link	c.259G>A	p.Asp87Asn	missense_variant	Exon 3 of 35	1	NM_003072.5	ENSP00000343896.4
SMARCA4	ENST00000643549.1 link	c.259G>A	p.Asp87Asn	missense_variant	Exon 3 of 35			ENSP00000493975.1
SMARCA4	ENST00000541122.6 link	c.259G>A	p.Asp87Asn	missense_variant	Exon 4 of 35	5		ENSP00000445036.2
SMARCA4	ENST00000643296.1 link	c.259G>A	p.Asp87Asn	missense_variant	Exon 3 of 34			ENSP00000496635.1
SMARCA4	ENST00000644737.1 link	c.259G>A	p.Asp87Asn	missense_variant	Exon 3 of 34			ENSP00000495548.1
SMARCA4	ENST00000589677.5 link	c.259G>A	p.Asp87Asn	missense_variant	Exon 4 of 35	5		ENSP00000464778.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461812

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727204

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.00

AC:

AN:

86252

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53354

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1112004

Other (OTH)

AF:

0.00

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Rhabdoid tumor predisposition syndrome 2

Uncertain:1

May 21, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces aspartic acid, which is acidic and polar, with asparagine, which is neutral and polar, at codon 87 of the SMARCA4 protein (p.Asp87Asn). This variant is not present in population databases (gnomAD no frequency). 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: 941120). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on SMARCA4 protein function. 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

Benign:1

Apr 03, 2024

Ambry Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

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

Uncertain

0.36

BayesDel_addAF

Benign

-0.033

BayesDel_noAF

Benign

-0.29

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.45

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

Eigen

Uncertain

0.43

Eigen_PC

Uncertain

0.49

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.98

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

M_CAP

Uncertain

0.25

MetaRNN

Uncertain

0.48

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

MetaSVM

Uncertain

0.19

MutationAssessor

Benign

0.90

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

PhyloP100

PrimateAI

Uncertain

0.60

PROVEAN

Benign

-2.3

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

REVEL

Uncertain

0.41

Sift

Uncertain

0.0050

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

Sift4G

Benign

0.10

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

Polyphen

0.82

P;.;P;.;.;.;.;.;.;.;P;.;.;.;.;.;.;.;P

Vest4

0.70

MutPred

0.23

Gain of MoRF binding (P = 0.0379);Gain of MoRF binding (P = 0.0379);Gain of MoRF binding (P = 0.0379);Gain of MoRF binding (P = 0.0379);Gain of MoRF binding (P = 0.0379);Gain of MoRF binding (P = 0.0379);Gain of MoRF binding (P = 0.0379);Gain of MoRF binding (P = 0.0379);Gain of MoRF binding (P = 0.0379);Gain of MoRF binding (P = 0.0379);Gain of MoRF binding (P = 0.0379);Gain of MoRF binding (P = 0.0379);Gain of MoRF binding (P = 0.0379);Gain of MoRF binding (P = 0.0379);Gain of MoRF binding (P = 0.0379);Gain of MoRF binding (P = 0.0379);Gain of MoRF binding (P = 0.0379);Gain of MoRF binding (P = 0.0379);Gain of MoRF binding (P = 0.0379);

MVP

0.81

MPC

0.76

ClinPred

0.88

GERP RS

4.8

Varity_R

0.22

gMVP

0.35

Mutation Taster

=27/73

disease causing

(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

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over