19-11034973-C-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -15 ACMG points: 0P and 15B. BP4_ModerateBP6_Very_StrongBP7BS1

The NM_001387283.1(SMARCA4):c.4011C>T(p.Leu1337Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000386 in 1,605,054 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. L1337L) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000072 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000035 ( 0 hom. )

Consequence

SMARCA4
NM_001387283.1 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:8

Conservation

PhyloP100: 0.795

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: Benign. The variant received -15 ACMG points.

BP4

Computational evidence support a benign effect (REVEL=0.182).

BP6

Variant 19-11034973-C-T is Benign according to our data. Variant chr19-11034973-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 220922.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=0.795 with no splicing effect.

BS1

Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.0000722 (11/152292) while in subpopulation EAS AF = 0.00136 (7/5144). AF 95% confidence interval is 0.000638. There are 0 homozygotes in GnomAd4. There are 7 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SMARCA4	NM_001387283.1 link	c.4011C>T	p.Leu1337Leu	synonymous_variant	Exon 29 of 36	ENST00000646693.2	NP_001374212.1
SMARCA4	NM_003072.5 link	c.4011C>T	p.Leu1337Leu	synonymous_variant	Exon 29 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.4011C>T	p.Leu1337Leu	synonymous_variant	Exon 29 of 36		NM_001387283.1	ENSP00000495368.1	Q9HBD4
SMARCA4	ENST00000344626.10 link	c.4011C>T	p.Leu1337Leu	synonymous_variant	Exon 29 of 35	1	NM_003072.5	ENSP00000343896.4	P51532-1
SMARCA4	ENST00000643549.1 link	c.3912C>T	p.Leu1304Leu	synonymous_variant	Exon 28 of 35			ENSP00000493975.1	A0A2R8Y4P4
SMARCA4	ENST00000541122.6 link	c.3912C>T	p.Leu1304Leu	synonymous_variant	Exon 29 of 35	5		ENSP00000445036.2	P51532-4
SMARCA4	ENST00000643296.1 link	c.3912C>T	p.Leu1304Leu	synonymous_variant	Exon 28 of 34			ENSP00000496635.1	P51532-4
SMARCA4	ENST00000644737.1 link	c.3912C>T	p.Leu1304Leu	synonymous_variant	Exon 28 of 34			ENSP00000495548.1	P51532-4
SMARCA4	ENST00000589677.5 link	c.3912C>T	p.Leu1304Leu	synonymous_variant	Exon 29 of 35	5		ENSP00000464778.1	P51532-3
SMARCA4	ENST00000643995.1 link	c.3423C>T	p.Leu1141Leu	synonymous_variant	Exon 26 of 32			ENSP00000496004.1	A0A2R8YGG3
SMARCA4	ENST00000644963.1 link	c.2655C>T	p.Leu885Leu	synonymous_variant	Exon 22 of 28			ENSP00000495599.1	A0A2R8YG32
SMARCA4	ENST00000644065.1 link	c.2637C>T	p.Leu879Leu	synonymous_variant	Exon 21 of 27			ENSP00000493615.1	A0A2R8Y440
SMARCA4	ENST00000642350.1 link	c.2496C>T	p.Leu832Leu	synonymous_variant	Exon 21 of 27			ENSP00000495355.1	A0A2R8Y6N0
SMARCA4	ENST00000643857.1 link	c.2364C>T	p.Leu788Leu	synonymous_variant	Exon 20 of 25			ENSP00000494159.1	A0A2R8Y526
SMARCA4	ENST00000538456.4 link	c.168C>T	p.Leu56Leu	synonymous_variant	Exon 3 of 8	3		ENSP00000495197.1	A0A2R8YFK5

Frequencies

GnomAD3 genomes

AF:

0.0000723

AC:

AN:

152174

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:

0.00136

Gnomad SAS

AF:

0.000829

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000103

AC:

AN:

232986

AF XY:

0.0000869

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000304

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00103

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000956

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000351

AC:

AN:

1452762

Hom.:

Cov.:

AF XY:

0.0000429

AC XY:

AN XY:

721956

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33298

American (AMR)

AF:

0.0000230

AC:

AN:

43490

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25906

East Asian (EAS)

AF:

0.000508

AC:

AN:

39354

South Asian (SAS)

AF:

0.000177

AC:

AN:

84774

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51834

Middle Eastern (MID)

AF:

0.000182

AC:

AN:

5488

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1108592

Other (OTH)

AF:

0.000200

AC:

AN:

60026

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.493

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000722

AC:

AN:

152292

Hom.:

Cov.:

AF XY:

0.0000940

AC XY:

AN XY:

74456

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41582

American (AMR)

AF:

0.00

AC:

AN:

15304

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00136

AC:

AN:

5144

South Asian (SAS)

AF:

0.000829

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10612

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68034

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.484

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000434

Hom.:

Bravo

AF:

0.0000151

Asia WGS

AF:

0.00289

AC:

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:8

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Sep 17, 2021

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Apr 01, 2025

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

SMARCA4: BP4, BP7 -

Hereditary cancer-predisposing syndrome

Benign:2

Jun 28, 2021

Sema4, Sema4

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:curation

- -

Jul 28, 2015

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. -

Intellectual disability, autosomal dominant 16

Benign:1

Jul 15, 2021

Genome-Nilou Lab

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Rhabdoid tumor predisposition syndrome 2

Benign:1

Feb 02, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Coffin-Siris syndrome

Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

SMARCA4-related disorder

Benign:1

Feb 02, 2024

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.39

CADD

Benign

4.6

(source)

DANN

Benign

0.79

PhyloP100

0.80

PromoterAI

-0.017

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.8

Mutation Taster

=97/3

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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19-11034973-C-T

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