rs1555781739

Positions:

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBP6

The NM_003072.5(SMARCA4):c.3216-5T>A variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,164 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 predict no significant impact on normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Consequence

SMARCA4
NM_003072.5 splice_region, intron

Scores

Splicing: ADA: 0.1330

Clinical Significance

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

Conservation

PhyloP100: -1.71

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 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.91).

BP6

Variant 19-11027779-T-A is Benign according to our data. Variant chr19-11027779-T-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 480622.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=2, Likely_benign=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SMARCA4	NM_001387283.1 link	c.3216-5T>A		splice_region_variant, intron_variant		ENST00000646693.2	NP_001374212.1
SMARCA4	NM_003072.5 link	c.3216-5T>A		splice_region_variant, intron_variant		ENST00000344626.10	NP_003063.2	P51532-1A7E2E1

Ensembl

Gene	Transcript	HGVSc	Effect	TSL	MANE	Protein	UniProt
SMARCA4	ENST00000646693.2 link	c.3216-5T>A	splice_region_variant, intron_variant		NM_001387283.1	ENSP00000495368.1	Q9HBD4
SMARCA4	ENST00000344626.10 link	c.3216-5T>A	splice_region_variant, intron_variant	1	NM_003072.5	ENSP00000343896.4	P51532-1
SMARCA4	ENST00000643549.1 link	c.3216-5T>A	splice_region_variant, intron_variant			ENSP00000493975.1	A0A2R8Y4P4
SMARCA4	ENST00000541122.6 link	c.3216-5T>A	splice_region_variant, intron_variant	5		ENSP00000445036.2	P51532-4
SMARCA4	ENST00000643296.1 link	c.3216-5T>A	splice_region_variant, intron_variant			ENSP00000496635.1	P51532-4
SMARCA4	ENST00000644737.1 link	c.3216-5T>A	splice_region_variant, intron_variant			ENSP00000495548.1	P51532-4
SMARCA4	ENST00000589677.5 link	c.3216-5T>A	splice_region_variant, intron_variant	5		ENSP00000464778.1	P51532-3
SMARCA4	ENST00000643995.1 link	c.2628-5T>A	splice_region_variant, intron_variant			ENSP00000496004.1	A0A2R8YGG3
SMARCA4	ENST00000644963.1 link	c.1860-5T>A	splice_region_variant, intron_variant			ENSP00000495599.1	A0A2R8YG32
SMARCA4	ENST00000644065.1 link	c.1941-5T>A	splice_region_variant, intron_variant			ENSP00000493615.1	A0A2R8Y440
SMARCA4	ENST00000642350.1 link	c.1701-5T>A	splice_region_variant, intron_variant			ENSP00000495355.1	A0A2R8Y6N0
SMARCA4	ENST00000643857.1 link	c.1569-5T>A	splice_region_variant, intron_variant			ENSP00000494159.1	A0A2R8Y526

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152164

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152164

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74346

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Intellectual disability, autosomal dominant 16

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Genome-Nilou Lab

Jul 15, 2021

- -

Hereditary cancer-predisposing syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 14, 2021

The c.3216-5T>A intronic variant results from a T to A substitution 5 nucleotides upstream from coding exon 23 in the SMARCA4 gene. This nucleotide position is poorly conserved in available vertebrate species. In silico splice site analysis for this alteration is inconclusive and direct evidence is insufficient at this time (Ambry internal data). Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Rhabdoid tumor predisposition syndrome 2

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 03, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.91

CADD

Benign

1.3

DANN

Benign

0.61

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.13

dbscSNV1_RF

Benign

0.37

SpliceAI score (max)

0.14

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over