chr19-11033823-G-A

Variant names:

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_ModerateBP6BP7BS1

The NM_001387283.1(SMARCA4):c.3831G>A(p.Pro1277Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000154 in 779,300 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 Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. P1277P) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000011 ( 0 hom. )

Consequence

SMARCA4
NM_001387283.1 synonymous

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:2

Conservation

PhyloP100: 3.47

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:

ENSG00000278643 (HGNC:):

ENSG00000278643 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -8 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.42).

BP6

Variant 19-11033823-G-A is Benign according to our data. Variant chr19-11033823-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 537848.

BP7

Synonymous conserved (PhyloP=3.47 with no splicing effect.

BS1

Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.0000329 (5/151882) while in subpopulation NFE AF = 0.0000736 (5/67966). AF 95% confidence interval is 0.0000285. There are 0 homozygotes in GnomAd4. There are 1 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.3831G>A	p.Pro1277Pro	synonymous_variant	Exon 27 of 36	ENST00000646693.2	NP_001374212.1
SMARCA4	NM_003072.5 link	c.3831G>A	p.Pro1277Pro	synonymous_variant	Exon 27 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.3831G>A	p.Pro1277Pro	synonymous_variant	Exon 27 of 36		NM_001387283.1	ENSP00000495368.1	Q9HBD4
SMARCA4	ENST00000344626.10 link	c.3831G>A	p.Pro1277Pro	synonymous_variant	Exon 27 of 35	1	NM_003072.5	ENSP00000343896.4	P51532-1
SMARCA4	ENST00000643995.1 link	c.3243G>A	p.Pro1081Pro	synonymous_variant	Exon 24 of 32			ENSP00000496004.1	A0A2R8YGG3
SMARCA4	ENST00000644963.1 link	c.2475G>A	p.Pro825Pro	synonymous_variant	Exon 20 of 28			ENSP00000495599.1	A0A2R8YG32
SMARCA4	ENST00000642350.1 link	c.2316G>A	p.Pro772Pro	synonymous_variant	Exon 19 of 27			ENSP00000495355.1	A0A2R8Y6N0
SMARCA4	ENST00000643857.1 link	c.2184G>A	p.Pro728Pro	synonymous_variant	Exon 18 of 25			ENSP00000494159.1	A0A2R8Y526
SMARCA4	ENST00000643549.1 link	c.3775-300G>A		intron_variant	Intron 26 of 34			ENSP00000493975.1	A0A2R8Y4P4
SMARCA4	ENST00000541122.6 link	c.3775-300G>A		intron_variant	Intron 27 of 34	5		ENSP00000445036.2	P51532-4
SMARCA4	ENST00000643296.1 link	c.3775-300G>A		intron_variant	Intron 26 of 33			ENSP00000496635.1	P51532-4
SMARCA4	ENST00000644737.1 link	c.3775-300G>A		intron_variant	Intron 26 of 33			ENSP00000495548.1	P51532-4
SMARCA4	ENST00000589677.5 link	c.3775-300G>A		intron_variant	Intron 27 of 34	5		ENSP00000464778.1	P51532-3
SMARCA4	ENST00000644065.1 link	c.2500-300G>A		intron_variant	Intron 19 of 26			ENSP00000493615.1	A0A2R8Y440
SMARCA4	ENST00000538456.4 link	c.31-300G>A		intron_variant	Intron 1 of 7	3		ENSP00000495197.1	A0A2R8YFK5

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

151882

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:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000736

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00000409

AC:

AN:

244266

AF XY:

0.00000747

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:

0.00000922

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000112

AC:

AN:

627418

Hom.:

Cov.:

AF XY:

0.00000585

AC XY:

AN XY:

341854

show subpopulations

African (AFR)

AF:

0.0000565

AC:

AN:

17692

American (AMR)

AF:

0.00

AC:

AN:

43728

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

20974

East Asian (EAS)

AF:

0.0000554

AC:

AN:

36070

South Asian (SAS)

AF:

0.00

AC:

AN:

69798

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51768

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4150

European-Non Finnish (NFE)

AF:

0.0000114

AC:

AN:

350168

Other (OTH)

AF:

0.00

AC:

AN:

33070

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

AF:

0.0000329

AC:

AN:

151882

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74174

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41338

American (AMR)

AF:

0.00

AC:

AN:

15238

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3464

East Asian (EAS)

AF:

0.00

AC:

AN:

5174

South Asian (SAS)

AF:

0.00

AC:

AN:

4814

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10568

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000736

AC:

AN:

67966

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.495

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:

0.0000712

Hom.:

Bravo

AF:

0.0000227

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Oct 17, 2024

Quest Diagnostics Nichols Institute San Juan Capistrano

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The SMARCA4 c.3831G>A (p.Pro1277=) synonymous variant has not been reported in individuals with SMARCA4-related conditions in the published literature. The frequency of this variant in the general population, 0.0000073 (2/275580 chromosomes (Genome Aggregation Database, http://gnomad.broadinstitute.org)), is uninformative in the assessment of its pathogenicity. Analysis of this variant using software algorithms for the prediction of the effect of nucleotide changes on splicing yielded predictions that this variant does not affect SMARCA4 mRNA splicing. Based on the available information, we are unable to determine the clinical significance of this variant. -

Rhabdoid tumor predisposition syndrome 2

Benign:1

Dec 22, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Hereditary cancer-predisposing syndrome

Benign:1

May 25, 2019

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

BayesDel_noAF

Benign

-0.42

CADD

Benign

(source)

DANN

Benign

0.72

PhyloP100

3.5

PromoterAI

-0.015

Neutral

(source)

Mutation Taster

=99/1

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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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over