chr19-10994866-C-G

Variant names:

Variant summary

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

The NM_001387283.1(SMARCA4):c.1458C>G(p.Phe486Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. F486F) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 31)

Consequence

SMARCA4
NM_001387283.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.265

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:

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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.1458C>G	p.Phe486Leu	missense_variant	Exon 9 of 36	ENST00000646693.2	NP_001374212.1
SMARCA4	NM_003072.5 link	c.1458C>G	p.Phe486Leu	missense_variant	Exon 9 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.1458C>G	p.Phe486Leu	missense_variant	Exon 9 of 36		NM_001387283.1	ENSP00000495368.1	Q9HBD4
SMARCA4	ENST00000344626.10 link	c.1458C>G	p.Phe486Leu	missense_variant	Exon 9 of 35	1	NM_003072.5	ENSP00000343896.4	P51532-1
SMARCA4	ENST00000643549.1 link	c.1458C>G	p.Phe486Leu	missense_variant	Exon 9 of 35			ENSP00000493975.1	A0A2R8Y4P4
SMARCA4	ENST00000541122.6 link	c.1458C>G	p.Phe486Leu	missense_variant	Exon 10 of 35	5		ENSP00000445036.2	P51532-4
SMARCA4	ENST00000643296.1 link	c.1458C>G	p.Phe486Leu	missense_variant	Exon 9 of 34			ENSP00000496635.1	P51532-4
SMARCA4	ENST00000644737.1 link	c.1458C>G	p.Phe486Leu	missense_variant	Exon 9 of 34			ENSP00000495548.1	P51532-4
SMARCA4	ENST00000589677.5 link	c.1458C>G	p.Phe486Leu	missense_variant	Exon 10 of 35	5		ENSP00000464778.1	P51532-3
SMARCA4	ENST00000643995.1 link	c.870C>G	p.Phe290Leu	missense_variant	Exon 6 of 32			ENSP00000496004.1	A0A2R8YGG3
SMARCA4	ENST00000644963.1 link	c.102C>G	p.Phe34Leu	missense_variant	Exon 2 of 28			ENSP00000495599.1	A0A2R8YG32
SMARCA4	ENST00000644065.1 link	c.186C>G	p.Phe62Leu	missense_variant	Exon 2 of 27			ENSP00000493615.1	A0A2R8Y440
SMARCA4	ENST00000642350.1 link	c.-55C>G		upstream_gene_variant				ENSP00000495355.1	A0A2R8Y6N0

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Cov.:

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Rhabdoid tumor predisposition syndrome 2

Uncertain:1

Oct 13, 2017

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

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. Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C15"). This variant has not been reported in the literature in individuals with SMARCA4-related disease. This variant is not present in population databases (ExAC no frequency). This sequence change replaces phenylalanine with leucine at codon 486 of the SMARCA4 protein (p.Phe486Leu). The phenylalanine residue is highly conserved and there is a small physicochemical difference between phenylalanine and leucine. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.99

BayesDel_addAF

Benign

0.0017

BayesDel_noAF

Benign

-0.24

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Pathogenic

0.82

D;.;T;.;.;.;.;.;.;.;D;.;.;.;.;.;T;T;.

Eigen

Benign

-0.16

Eigen_PC

Benign

-0.076

FATHMM_MKL

Uncertain

0.94

LIST_S2

Uncertain

0.97

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

M_CAP

Benign

0.042

MetaRNN

Uncertain

0.52

D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.86

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

PhyloP100

0.27

PrimateAI

Pathogenic

0.91

PROVEAN

Pathogenic

-5.0

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

REVEL

Benign

0.17

Sift

Benign

0.23

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

Sift4G

Benign

0.45

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

Polyphen

0.16

B;.;B;.;.;.;.;.;.;.;B;.;.;.;.;.;.;B;.

Vest4

0.61

MutPred

0.65

Gain of loop (P = 0.0502);Gain of loop (P = 0.0502);Gain of loop (P = 0.0502);Gain of loop (P = 0.0502);Gain of loop (P = 0.0502);Gain of loop (P = 0.0502);Gain of loop (P = 0.0502);Gain of loop (P = 0.0502);Gain of loop (P = 0.0502);Gain of loop (P = 0.0502);Gain of loop (P = 0.0502);Gain of loop (P = 0.0502);Gain of loop (P = 0.0502);Gain of loop (P = 0.0502);Gain of loop (P = 0.0502);Gain of loop (P = 0.0502);Gain of loop (P = 0.0502);Gain of loop (P = 0.0502);.;

MVP

0.70

MPC

2.3

ClinPred

0.96

GERP RS

2.4

PromoterAI

-0.021

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.70

gMVP

1.0

Mutation Taster

=18/82

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