19-10994822-C-T

Position:

• chr19-10994822-C-T

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 2P and 6B. PM2 BP4_Strong BP6_Moderate

The NM_003072.5(SMARCA4):​c.1420-6C>T variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000197 in 152,144 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★).

• Frequency: Genomes: 𝑓 0.000020 (0 hom., cov: 31)
• Consequence: SMARCA4 NM_003072.5 splice_region, intron
• Scores: Splicing: ADA: 0.00003060
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.850

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 (HGNC:):

ACMG classification

Verdict is Likely_benign. Variant got -4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.82).
• BP6: Variant 19-10994822-C-T is Benign according to our data. Variant chr19-10994822-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 537899.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SMARCA4	NM_001387283.1	c.1420-6C>T		splice_region_variant, intron_variant		ENST00000646693.2	NP_001374212.1
SMARCA4	NM_003072.5	c.1420-6C>T		splice_region_variant, intron_variant		ENST00000344626.10	NP_003063.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SMARCA4	ENST00000646693.2	c.1420-6C>T		splice_region_variant, intron_variant			NM_001387283.1	ENSP00000495368.1
SMARCA4	ENST00000344626.10	c.1420-6C>T		splice_region_variant, intron_variant		1	NM_003072.5	ENSP00000343896.4
SMARCA4	ENST00000643549.1	c.1420-6C>T		splice_region_variant, intron_variant				ENSP00000493975.1
SMARCA4	ENST00000541122.6	c.1420-6C>T		splice_region_variant, intron_variant		5		ENSP00000445036.2
SMARCA4	ENST00000643296.1	c.1420-6C>T		splice_region_variant, intron_variant				ENSP00000496635.1
SMARCA4	ENST00000644737.1	c.1420-6C>T		splice_region_variant, intron_variant				ENSP00000495548.1
SMARCA4	ENST00000589677.5	c.1420-6C>T		splice_region_variant, intron_variant		5		ENSP00000464778.1
SMARCA4	ENST00000643995.1	c.832-6C>T		splice_region_variant, intron_variant				ENSP00000496004.1
SMARCA4	ENST00000644963.1	c.64-6C>T		splice_region_variant, intron_variant				ENSP00000495599.1
SMARCA4	ENST00000644065.1	c.148-6C>T		splice_region_variant, intron_variant				ENSP00000493615.1

Frequencies

GnomAD3 genomes AF: 0.0000197 AC: 3 AN: 152144 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.0000724

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: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 31

GnomAD4 genome AF: 0.0000197 AC: 3 AN: 152144 Hom.: 0 Cov.: 31 AF XY: 0.0000135 AC XY: 1 AN XY: 74312

Gnomad4 AFR AF: 0.0000724

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: 0.00

Gnomad4 OTH AF: 0.00

Bravo AF: 0.0000113

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Rhabdoid tumor predisposition syndrome 2 Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Nov 14, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.82
CADD	Benign	6.3
DANN	Benign	0.33

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.000031
dbscSNV1_RF	Benign	0.0
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: rs878854200; hg19: chr19-11105498;