rs3786721

Variant names:

• chr19-11035823-T-C
• rs3786721
• NM_001387283.1:c.4170+691T>C

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_003072.5(SMARCA4):​c.4170+691T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.586 in 152,216 control chromosomes in the GnomAD database, including 26,496 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.59 (26496 hom., cov: 34)
• Consequence: SMARCA4 NM_003072.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.862
• Publications: 18 publications found

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: Orphanet, ClinGen, 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: G2P, Ambry Genetics, Genomics England PanelApp, ClinGen, Labcorp Genetics (formerly Invitae)
• otosclerosis

  Inheritance: AD Classification: STRONG Submitted by: PanelApp Australia
• 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: Unknown Classification: LIMITED Submitted by: ClinGen

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.91).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.803 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003072.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SMARCA4	NM_001387283.1	MANE Plus Clinical	c.4170+691T>C		intron	N/A	NP_001374212.1	Q9HBD4
	SMARCA4	NM_003072.5	MANE Select	c.4170+691T>C		intron	N/A	NP_003063.2
	SMARCA4	NM_001128849.3		c.4170+691T>C		intron	N/A	NP_001122321.1	Q9HBD4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SMARCA4	ENST00000646693.2	MANE Plus Clinical	c.4170+691T>C		intron	N/A	ENSP00000495368.1	Q9HBD4
	SMARCA4	ENST00000344626.10	TSL:1 MANE Select	c.4170+691T>C		intron	N/A	ENSP00000343896.4	P51532-1
	SMARCA4	ENST00000643549.1		c.4071+691T>C		intron	N/A	ENSP00000493975.1	A0A2R8Y4P4

Frequencies

GnomAD3 genomes AF: 0.585 AC: 89041 AN: 152098 Hom.: 26438 Cov.: 34

Gnomad AFR AF: 0.658

Gnomad AMI AF: 0.446

Gnomad AMR AF: 0.504

Gnomad ASJ AF: 0.516

Gnomad EAS AF: 0.823

Gnomad SAS AF: 0.622

Gnomad FIN AF: 0.551

Gnomad MID AF: 0.611

Gnomad NFE AF: 0.550

Gnomad OTH AF: 0.576

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.586 AC: 89159 AN: 152216 Hom.: 26496 Cov.: 34 AF XY: 0.587 AC XY: 43652 AN XY: 74426

African (AFR) AF: 0.659 AC: 27365 AN: 41550

American (AMR) AF: 0.504 AC: 7705 AN: 15280

Ashkenazi Jewish (ASJ) AF: 0.516 AC: 1790 AN: 3472

East Asian (EAS) AF: 0.824 AC: 4277 AN: 5190

South Asian (SAS) AF: 0.622 AC: 3002 AN: 4828

European-Finnish (FIN) AF: 0.551 AC: 5837 AN: 10590

Middle Eastern (MID) AF: 0.619 AC: 182 AN: 294

European-Non Finnish (NFE) AF: 0.550 AC: 37372 AN: 67988

Other (OTH) AF: 0.578 AC: 1224 AN: 2116

Alfa AF: 0.559 Hom.: 54517

Bravo AF: 0.588

Asia WGS AF: 0.697 AC: 2426 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.91
CADD	Benign	0.42
DANN	Benign	0.55
PhyloP100		-0.86
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs3786721; hg19: chr19-11146499;