19-10984162-C-A

Variant names:

Variant summary

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

The NM_003072.5(SMARCA4):c.11C>A(p.Pro4Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P4A) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Consequence

SMARCA4
NM_003072.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.91

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: 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.11C>A	p.Pro4Gln	missense_variant	Exon 2 of 36	ENST00000646693.2	NP_001374212.1
SMARCA4	NM_003072.5 link	c.11C>A	p.Pro4Gln	missense_variant	Exon 2 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.11C>A	p.Pro4Gln	missense_variant	Exon 2 of 36		NM_001387283.1	ENSP00000495368.1	Q9HBD4
SMARCA4	ENST00000344626.10 link	c.11C>A	p.Pro4Gln	missense_variant	Exon 2 of 35	1	NM_003072.5	ENSP00000343896.4	P51532-1
SMARCA4	ENST00000643549.1 link	c.11C>A	p.Pro4Gln	missense_variant	Exon 2 of 35			ENSP00000493975.1	A0A2R8Y4P4
SMARCA4	ENST00000541122.6 link	c.11C>A	p.Pro4Gln	missense_variant	Exon 3 of 35	5		ENSP00000445036.2	P51532-4
SMARCA4	ENST00000643296.1 link	c.11C>A	p.Pro4Gln	missense_variant	Exon 2 of 34			ENSP00000496635.1	P51532-4
SMARCA4	ENST00000644737.1 link	c.11C>A	p.Pro4Gln	missense_variant	Exon 2 of 34			ENSP00000495548.1	P51532-4
SMARCA4	ENST00000589677.5 link	c.11C>A	p.Pro4Gln	missense_variant	Exon 3 of 35	5		ENSP00000464778.1	P51532-3

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

Hereditary cancer-predisposing syndrome

Uncertain:1

Mar 17, 2021

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The p.P4Q variant (also known as c.11C>A), located in coding exon 1 of the SMARCA4 gene, results from a C to A substitution at nucleotide position 11. The proline at codon 4 is replaced by glutamine, an amino acid with similar properties. This amino acid position is well conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Missense and in-frame variants in SMARCA4 are known to cause neurodevelopmental disorders; however, such associations with rhabdoid tumor predisposition syndrome including small cell carcinoma of the ovary-hypercalcemic type (SCCOHT) are exceedingly rare (Kosho T et al. Am J Med Genet C Semin Med Genet. 2014 Sep;166C(3):262-75; Jelinic P et al. Nat Genet. 2014 May;46(5):424-6). Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.38

BayesDel_addAF

Pathogenic

0.29

BayesDel_noAF

Pathogenic

0.17

CADD

Uncertain

(source)

DANN

Uncertain

0.98

DEOGEN2

Uncertain

0.75

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

Eigen

Uncertain

0.68

Eigen_PC

Pathogenic

0.69

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.96

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

M_CAP

Pathogenic

0.35

MetaRNN

Uncertain

0.65

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

MetaSVM

Uncertain

0.71

MutationAssessor

Benign

1.1

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

PhyloP100

7.9

PrimateAI

Uncertain

0.70

PROVEAN

Uncertain

-2.8

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

REVEL

Pathogenic

0.65

Sift

Pathogenic

0.0

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

Sift4G

Uncertain

0.010

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

Polyphen

0.99

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

Vest4

0.46

MutPred

0.19

Loss of glycosylation at P4 (P = 0.0422);Loss of glycosylation at P4 (P = 0.0422);Loss of glycosylation at P4 (P = 0.0422);Loss of glycosylation at P4 (P = 0.0422);Loss of glycosylation at P4 (P = 0.0422);Loss of glycosylation at P4 (P = 0.0422);Loss of glycosylation at P4 (P = 0.0422);Loss of glycosylation at P4 (P = 0.0422);Loss of glycosylation at P4 (P = 0.0422);Loss of glycosylation at P4 (P = 0.0422);Loss of glycosylation at P4 (P = 0.0422);Loss of glycosylation at P4 (P = 0.0422);Loss of glycosylation at P4 (P = 0.0422);Loss of glycosylation at P4 (P = 0.0422);Loss of glycosylation at P4 (P = 0.0422);Loss of glycosylation at P4 (P = 0.0422);Loss of glycosylation at P4 (P = 0.0422);Loss of glycosylation at P4 (P = 0.0422);Loss of glycosylation at P4 (P = 0.0422);

MVP

0.83

MPC

0.24

ClinPred

0.97

GERP RS

5.0

PromoterAI

0.023

Neutral

(source)

Varity_R

0.58

gMVP

0.087

Mutation Taster

=29/71

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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