chr19-11021615-G-A

Position:

• chr19-11021615-G-A

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_Strong BS1_Supporting BS2

The NM_001387283.1(SMARCA4):​c.2617-110G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00348 in 1,371,434 control chromosomes in the GnomAD database, including 14 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as not provided (no stars).

• Frequency:
  • Genomes: 𝑓 0.0019 (0 hom., cov: 33)
  • Exomes 𝑓: 0.0037 (14 hom.)
• Consequence: SMARCA4 NM_001387283.1 intron
• Clinical Significance: not provided no classification provided O:1
• Conservation: PhyloP100: -0.111

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 Benign. Variant got -9 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.87).
• BS1: Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.00193 (294/152316) while in subpopulation NFE AF= 0.00334 (227/68022). AF 95% confidence interval is 0.00298. There are 0 homozygotes in gnomad4. There are 145 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting
• BS2: High AC in GnomAd4 at 294 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SMARCA4	NM_001387283.1	c.2617-110G>A		intron_variant		ENST00000646693.2	NP_001374212.1
SMARCA4	NM_003072.5	c.2617-110G>A		intron_variant		ENST00000344626.10	NP_003063.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SMARCA4	ENST00000344626.10	c.2617-110G>A		intron_variant		1	NM_003072.5	ENSP00000343896	P4
SMARCA4	ENST00000646693.2	c.2617-110G>A		intron_variant			NM_001387283.1	ENSP00000495368

Frequencies

GnomAD3 genomes AF: 0.00193 AC: 294 AN: 152198 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.000700

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00170

Gnomad ASJ AF: 0.000288

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00104

Gnomad FIN AF: 0.000377

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00334

Gnomad OTH AF: 0.000956

GnomAD3 exomes AF: 0.00209 AC: 296 AN: 141710 Hom.: 1 AF XY: 0.00191 AC XY: 146 AN XY: 76416

Gnomad AFR exome AF: 0.000935

Gnomad AMR exome AF: 0.00170

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00114

Gnomad FIN exome AF: 0.000133

Gnomad NFE exome AF: 0.00388

Gnomad OTH exome AF: 0.00117

GnomAD4 exome AF: 0.00367 AC: 4477 AN: 1219118 Hom.: 14 Cov.: 18 AF XY: 0.00358 AC XY: 2183 AN XY: 609694

Gnomad4 AFR exome AF: 0.000672

Gnomad4 AMR exome AF: 0.00161

Gnomad4 ASJ exome AF: 0.0000415

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000839

Gnomad4 FIN exome AF: 0.000215

Gnomad4 NFE exome AF: 0.00452

Gnomad4 OTH exome AF: 0.00275

GnomAD4 genome AF: 0.00193 AC: 294 AN: 152316 Hom.: 0 Cov.: 33 AF XY: 0.00195 AC XY: 145 AN XY: 74472

Gnomad4 AFR AF: 0.000697

Gnomad4 AMR AF: 0.00170

Gnomad4 ASJ AF: 0.000288

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00104

Gnomad4 FIN AF: 0.000377

Gnomad4 NFE AF: 0.00334

Gnomad4 OTH AF: 0.000946

Alfa AF: 0.00251 Hom.: 1

Bravo AF: 0.00193

Asia WGS AF: 0.000866 AC: 3 AN: 3478

ClinVar

Significance: not provided

Submissions summary: Other:1

Revision: no classification provided

Submissions by phenotype

not specified Other:1

not provided, no classification provided

reference population

ITMI

Sep 19, 2013

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.87
CADD	Benign	3.1
DANN	Benign	0.85

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

Other links and lift over

dbSNP: rs564402674; hg19: chr19-11132291;