rs767947665

chr19-10986973-C-Gchr19-10986973-C-T

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 3P and 4B. PM2 PP2 BP4_Strong

The NM_001387283.1(SMARCA4):c.829C>G(p.Pro277Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000687 in 1,455,682 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P277S) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: SMARCA4 NM_001387283.1 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.500

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]

ACMG classification

Verdict is Likely_benign. Variant got -1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant where missense usually causes diseases, SMARCA4
• BP4: Computational evidence support a benign effect (MetaRNN=0.050736457).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SMARCA4	NM_001387283.1	c.829C>G	p.Pro277Ala	missense_variant	5/36	ENST00000646693.2
SMARCA4	NM_003072.5	c.829C>G	p.Pro277Ala	missense_variant	5/35	ENST00000344626.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SMARCA4	ENST00000646693.2	c.829C>G	p.Pro277Ala	missense_variant	5/36		NM_001387283.1
SMARCA4	ENST00000344626.10	c.829C>G	p.Pro277Ala	missense_variant	5/35	1	NM_003072.5	P4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.87e-7 AC: 1 AN: 1455682 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 724466

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: 0.0000116

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.045
BayesDel_addAF	Benign	-0.049	T
BayesDel_noAF	Benign	-0.31
Cadd	Benign	22
Dann	Benign	0.90
DEOGEN2	Benign	0.26	T;.;T;.;.;.;.;.;.;.;T;.;.;.;.;.;T;T
Eigen	Benign	-0.64
Eigen_PC	Benign	-0.44
FATHMM_MKL	Benign	0.61	D
M_CAP	Uncertain	0.099	D
MetaRNN	Benign	0.051	T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T
MetaSVM	Benign	-0.70	T
MutationAssessor	Benign	-0.11	N;.;.;.;N;N;.;N;N;N;N;N;N;N;N;N;.;.
MutationTaster	Benign	0.72	N;N;N;N;N;N;N;N;N
PrimateAI	Uncertain	0.56	T
PROVEAN	Benign	0.080	N;.;.;.;.;.;.;.;.;.;N;.;N;.;N;.;N;N
REVEL	Benign	0.17
Sift	Benign	0.39	T;.;.;.;.;.;.;.;.;.;T;.;T;.;T;.;T;T
Sift4G	Benign	0.63	T;.;.;.;.;.;.;.;.;.;T;.;T;T;T;T;T;T
Polyphen		0.0	B;.;B;.;.;.;.;.;.;.;B;.;.;.;.;.;.;B
Vest4		0.31
MutPred		0.23		Loss of glycosylation at P277 (P = 0.0298);Loss of glycosylation at P277 (P = 0.0298);Loss of glycosylation at P277 (P = 0.0298);Loss of glycosylation at P277 (P = 0.0298);Loss of glycosylation at P277 (P = 0.0298);Loss of glycosylation at P277 (P = 0.0298);Loss of glycosylation at P277 (P = 0.0298);Loss of glycosylation at P277 (P = 0.0298);Loss of glycosylation at P277 (P = 0.0298);Loss of glycosylation at P277 (P = 0.0298);Loss of glycosylation at P277 (P = 0.0298);Loss of glycosylation at P277 (P = 0.0298);Loss of glycosylation at P277 (P = 0.0298);Loss of glycosylation at P277 (P = 0.0298);Loss of glycosylation at P277 (P = 0.0298);Loss of glycosylation at P277 (P = 0.0298);Loss of glycosylation at P277 (P = 0.0298);Loss of glycosylation at P277 (P = 0.0298);
MVP		0.40
MPC		0.26
ClinPred		0.11	T
GERP RS		4.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.8
Varity_R		0.032
gMVP		0.048

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr19-11097649;