19-10987830-A-G

Position:

chr19-10987830-A-G

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 1P and 6B. PP2BP4_ModerateBS2

The ENST00000344626.10(SMARCA4):c.1024A>G(p.Met342Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000559 in 1,609,648 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. M342I) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

SMARCA4
ENST00000344626.10 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4B:1

Conservation

PhyloP100: 1.98

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:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), SMARCA4. . Gene score misZ 6.8459 (greater than the threshold 3.09). Trascript score misZ 8.7957 (greater than threshold 3.09). GenCC has associacion of gene with uterine corpus sarcoma, Coffin-Siris syndrome 1, intellectual disability, autosomal dominant 16, rhabdoid tumor predisposition syndrome 2, familial rhabdoid tumor, hereditary nonpolyposis colon cancer, Coffin-Siris syndrome.

BP4

Computational evidence support a benign effect (MetaRNN=0.10774675).

BS2

High AC in GnomAdExome4 at 6 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SMARCA4	NM_001387283.1 linkuse as main transcript	c.1024A>G	p.Met342Val	missense_variant	6/36	ENST00000646693.2	NP_001374212.1
SMARCA4	NM_003072.5 linkuse as main transcript	c.1024A>G	p.Met342Val	missense_variant	6/35	ENST00000344626.10	NP_003063.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SMARCA4	ENST00000646693.2 linkuse as main transcript	c.1024A>G	p.Met342Val	missense_variant	6/36		NM_001387283.1	ENSP00000495368
SMARCA4	ENST00000344626.10 linkuse as main transcript	c.1024A>G	p.Met342Val	missense_variant	6/35	1	NM_003072.5	ENSP00000343896	P4	P51532-1

Frequencies

GnomAD3 genomes

AF:

0.0000198

AC:

AN:

151560

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000243

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:

0.0000295

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000429

AC:

AN:

233218

Hom.:

AF XY:

0.00000780

AC XY:

AN XY:

128138

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000978

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000411

AC:

AN:

1458088

Hom.:

Cov.:

AF XY:

0.00000552

AC XY:

AN XY:

725166

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000540

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000198

AC:

AN:

151560

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74004

show subpopulations

Gnomad4 AFR

AF:

0.0000243

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:

0.0000295

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000282

Hom.:

Bravo

AF:

0.0000264

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:4Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Rhabdoid tumor predisposition syndrome 2

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Baylor Genetics	Dec 28, 2023	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 19, 2024	This sequence change replaces methionine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 342 of the SMARCA4 protein (p.Met342Val). This variant is present in population databases (no rsID available, gnomAD 0.004%). This variant has not been reported in the literature in individuals affected with SMARCA4-related conditions. ClinVar contains an entry for this variant (Variation ID: 238357). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt SMARCA4 protein function with a negative predictive value of 95%. 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. -

Hereditary cancer-predisposing syndrome

Uncertain:1Benign:1

Likely benign, criteria provided, single submitter	clinical testing	Ambry Genetics	Jan 21, 2021	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. -
Uncertain significance, criteria provided, single submitter	curation	Sema4, Sema4	Apr 12, 2021	- -

Intellectual disability, autosomal dominant 16

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Genome-Nilou Lab

Jul 15, 2021

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.053

BayesDel_addAF

Benign

-0.031

BayesDel_noAF

Benign

-0.28

CADD

Benign

DANN

Benign

0.91

DEOGEN2

Benign

0.19

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

Eigen

Benign

-0.60

Eigen_PC

Benign

-0.42

FATHMM_MKL

Uncertain

0.89

LIST_S2

Benign

0.71

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

M_CAP

Benign

0.074

MetaRNN

Benign

0.11

T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-0.90

MutationAssessor

Benign

0.69

N;.;.;.;N;N;.;N;N;N;N;N;N;N;N;N;.;.

MutationTaster

Benign

0.98

N;N;N;N;N;N;N;N;N

PrimateAI

Uncertain

0.57

PROVEAN

Benign

-0.28

N;.;.;.;.;.;.;.;.;.;N;.;N;.;N;.;N;N

REVEL

Benign

0.24

Sift

Benign

0.53

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

Sift4G

Benign

0.71

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

Polyphen

0.0010

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

Vest4

0.25

MutPred

0.24

Loss of glycosylation at P341 (P = 0.0936);Loss of glycosylation at P341 (P = 0.0936);Loss of glycosylation at P341 (P = 0.0936);Loss of glycosylation at P341 (P = 0.0936);Loss of glycosylation at P341 (P = 0.0936);Loss of glycosylation at P341 (P = 0.0936);Loss of glycosylation at P341 (P = 0.0936);Loss of glycosylation at P341 (P = 0.0936);Loss of glycosylation at P341 (P = 0.0936);Loss of glycosylation at P341 (P = 0.0936);Loss of glycosylation at P341 (P = 0.0936);Loss of glycosylation at P341 (P = 0.0936);Loss of glycosylation at P341 (P = 0.0936);Loss of glycosylation at P341 (P = 0.0936);Loss of glycosylation at P341 (P = 0.0936);Loss of glycosylation at P341 (P = 0.0936);Loss of glycosylation at P341 (P = 0.0936);Loss of glycosylation at P341 (P = 0.0936);

MVP

0.35

MPC

0.26

ClinPred

0.029

GERP RS

2.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.061

gMVP

0.16

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

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