19-11056151-G-A

Variant names:

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_StrongBA1

The NM_001387283.1(SMARCA4):c.4521-2104G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.249 in 152,100 control chromosomes in the GnomAD database, including 4,943 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.25 ( 4942 hom., cov: 32)

Exomes 𝑓: 0.24 ( 1 hom. )

Consequence

SMARCA4
NM_001387283.1 intron

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.400

Publications

18 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: Benign. The variant received -12 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.88).

BA1

GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.293 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SMARCA4	NM_001387283.1 link	c.4521-2104G>A		intron_variant	Intron 31 of 35	ENST00000646693.2	NP_001374212.1
SMARCA4	NM_003072.5 link	c.4425-2104G>A		intron_variant	Intron 30 of 34	ENST00000344626.10	NP_003063.2	P51532-1A7E2E1

Ensembl

Gene	Transcript	HGVSc	Effect	Exon rank	TSL	MANE	Protein	UniProt
SMARCA4	ENST00000646693.2 link	c.4521-2104G>A	intron_variant	Intron 31 of 35		NM_001387283.1	ENSP00000495368.1	Q9HBD4
SMARCA4	ENST00000344626.10 link	c.4425-2104G>A	intron_variant	Intron 30 of 34	1	NM_003072.5	ENSP00000343896.4	P51532-1
SMARCA4	ENST00000643549.1 link	c.4431-2104G>A	intron_variant	Intron 30 of 34			ENSP00000493975.1	A0A2R8Y4P4
SMARCA4	ENST00000541122.6 link	c.4335-2104G>A	intron_variant	Intron 30 of 34	5		ENSP00000445036.2	P51532-4
SMARCA4	ENST00000643296.1 link	c.4335-2104G>A	intron_variant	Intron 29 of 33			ENSP00000496635.1	P51532-4
SMARCA4	ENST00000644737.1 link	c.4335-2104G>A	intron_variant	Intron 29 of 33			ENSP00000495548.1	P51532-4
SMARCA4	ENST00000589677.5 link	c.4335-2107G>A	intron_variant	Intron 30 of 34	5		ENSP00000464778.1	P51532-3
SMARCA4	ENST00000643995.1 link	c.3846-2104G>A	intron_variant	Intron 27 of 31			ENSP00000496004.1	A0A2R8YGG3
SMARCA4	ENST00000644963.1 link	c.3078-2107G>A	intron_variant	Intron 23 of 27			ENSP00000495599.1	A0A2R8YG32
SMARCA4	ENST00000644065.1 link	c.3060-2107G>A	intron_variant	Intron 22 of 26			ENSP00000493615.1	A0A2R8Y440
SMARCA4	ENST00000642350.1 link	c.2919-2104G>A	intron_variant	Intron 22 of 26			ENSP00000495355.1	A0A2R8Y6N0
SMARCA4	ENST00000643857.1 link	c.2787-2104G>A	intron_variant	Intron 21 of 24			ENSP00000494159.1	A0A2R8Y526
SMARCA4	ENST00000538456.4 link	c.591-2104G>A	intron_variant	Intron 4 of 7	3		ENSP00000495197.1	A0A2R8YFK5

Frequencies

GnomAD3 genomes

AF:

0.249

AC:

37803

AN:

151940

Hom.:

4948

Cov.:

show subpopulations

Gnomad AFR

AF:

0.210

Gnomad AMI

AF:

0.246

Gnomad AMR

AF:

0.203

Gnomad ASJ

AF:

0.255

Gnomad EAS

AF:

0.102

Gnomad SAS

AF:

0.241

Gnomad FIN

AF:

0.232

Gnomad MID

AF:

0.209

Gnomad NFE

AF:

0.297

Gnomad OTH

AF:

0.248

GnomAD4 exome

AF:

0.238

AC:

AN:

Hom.:

AF XY:

0.321

AC XY:

AN XY:

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

American (AMR)

AC:

AN:

Ashkenazi Jewish (ASJ)

AC:

AN:

East Asian (EAS)

AC:

AN:

South Asian (SAS)

AC:

AN:

European-Finnish (FIN)

AF:

0.333

AC:

AN:

Middle Eastern (MID)

AC:

AN:

European-Non Finnish (NFE)

AF:

0.125

AC:

AN:

Other (OTH)

AF:

0.500

AC:

AN:

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000299060), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.388

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome 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

GnomAD4 genome

AF:

0.249

AC:

37805

AN:

152058

Hom.:

4942

Cov.:

AF XY:

0.243

AC XY:

18065

AN XY:

74320

show subpopulations

African (AFR)

AF:

0.210

AC:

8710

AN:

41470

American (AMR)

AF:

0.202

AC:

3091

AN:

15270

Ashkenazi Jewish (ASJ)

AF:

0.255

AC:

885

AN:

3470

East Asian (EAS)

AF:

0.102

AC:

525

AN:

5168

South Asian (SAS)

AF:

0.240

AC:

1157

AN:

4822

European-Finnish (FIN)

AF:

0.232

AC:

2452

AN:

10576

Middle Eastern (MID)

AF:

0.207

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.297

AC:

20180

AN:

67966

Other (OTH)

AF:

0.246

AC:

521

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.497

Heterozygous variant carriers

1414

2828

4241

5655

7069

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

410

820

1230

1640

2050

<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:

0.282

Hom.:

8841

Bravo

AF:

0.243

Asia WGS

AF:

0.173

AC:

605

AN:

3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.88

CADD

Benign

4.3

(source)

DANN

Benign

0.91

PhyloP100

0.40

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over