19-11012950-T-A

Position:

• chr19-11012950-T-A

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM2 PP2 PP3_Moderate

The NM_003072.5(SMARCA4):​c.2276T>A​(p.Ile759Asn) variant causes a missense, splice region change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: SMARCA4 NM_003072.5 missense, splice_region
• Scores: Splicing: ADA: 0.1956
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 8.02

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 Uncertain_significance. Variant got 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), SMARCA4. . Gene score misZ 6.8459 (greater than the threshold 3.09). Trascript score misZ 8.7957 (greater than threshold 3.09). GenCC has associacion of gene with uterine corpus sarcoma, Coffin-Siris syndrome 1, intellectual disability, autosomal dominant 16, rhabdoid tumor predisposition syndrome 2, familial rhabdoid tumor, hereditary nonpolyposis colon cancer, Coffin-Siris syndrome.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.921

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SMARCA4	NM_001387283.1	c.2276T>A	p.Ile759Asn	missense_variant, splice_region_variant	16/36	ENST00000646693.2	NP_001374212.1
SMARCA4	NM_003072.5	c.2276T>A	p.Ile759Asn	missense_variant, splice_region_variant	16/35	ENST00000344626.10	NP_003063.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SMARCA4	ENST00000646693.2	c.2276T>A	p.Ile759Asn	missense_variant, splice_region_variant	16/36		NM_001387283.1	ENSP00000495368.1
SMARCA4	ENST00000344626.10	c.2276T>A	p.Ile759Asn	missense_variant, splice_region_variant	16/35	1	NM_003072.5	ENSP00000343896.4
SMARCA4	ENST00000643549.1	c.2276T>A	p.Ile759Asn	missense_variant, splice_region_variant	16/35			ENSP00000493975.1
SMARCA4	ENST00000541122.6	c.2276T>A	p.Ile759Asn	missense_variant, splice_region_variant	17/35	5		ENSP00000445036.2
SMARCA4	ENST00000643296.1	c.2276T>A	p.Ile759Asn	missense_variant, splice_region_variant	16/34			ENSP00000496635.1
SMARCA4	ENST00000644737.1	c.2276T>A	p.Ile759Asn	missense_variant, splice_region_variant	16/34			ENSP00000495548.1
SMARCA4	ENST00000589677.5	c.2276T>A	p.Ile759Asn	missense_variant, splice_region_variant	17/35	5		ENSP00000464778.1
SMARCA4	ENST00000643995.1	c.1688T>A	p.Ile563Asn	missense_variant, splice_region_variant	13/32			ENSP00000496004.1
SMARCA4	ENST00000644963.1	c.920T>A	p.Ile307Asn	missense_variant, splice_region_variant	9/28			ENSP00000495599.1
SMARCA4	ENST00000644065.1	c.1001T>A	p.Ile334Asn	missense_variant, splice_region_variant	9/27			ENSP00000493615.1
SMARCA4	ENST00000642350.1	c.761T>A	p.Ile254Asn	missense_variant, splice_region_variant	8/27			ENSP00000495355.1
SMARCA4	ENST00000643857.1	c.629T>A	p.Ile210Asn	missense_variant, splice_region_variant	7/25			ENSP00000494159.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.84
BayesDel_addAF	Pathogenic	0.34	D
BayesDel_noAF	Pathogenic	0.26
CADD	Pathogenic	28
DANN	Uncertain	0.99
DEOGEN2	Pathogenic	0.83	D;.;T;.;.;.;.;.;.;.;D;.;.;.;.;.;T;T;.;.;.;.
Eigen	Pathogenic	0.69
Eigen_PC	Uncertain	0.65
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.97	.;D;.;.;.;.;D;.;.;.;D;.;D;D;D;D;D;D;D;D;D;D
M_CAP	Pathogenic	0.80	D
MetaRNN	Pathogenic	0.92	D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D
MetaSVM	Pathogenic	0.90	D
MutationAssessor	Uncertain	2.1	M;.;.;.;M;M;.;M;M;M;M;M;M;M;M;M;.;.;.;.;.;.
PrimateAI	Pathogenic	0.84	D
PROVEAN	Pathogenic	-5.2	D;.;.;.;.;.;.;.;.;.;D;.;D;.;D;.;.;D;.;.;.;.
REVEL	Pathogenic	0.93
Sift	Pathogenic	0.0	D;.;.;.;.;.;.;.;.;.;D;.;D;.;D;.;.;D;.;.;.;.
Sift4G	Pathogenic	0.0010	D;.;.;.;.;.;.;.;.;.;D;.;D;D;D;D;D;D;.;.;.;.
Polyphen		0.97	D;.;D;.;.;.;.;.;.;.;D;.;.;.;.;.;.;D;.;.;.;.
Vest4		0.91
MutPred		0.68		Loss of stability (P = 0.0585);Loss of stability (P = 0.0585);Loss of stability (P = 0.0585);Loss of stability (P = 0.0585);Loss of stability (P = 0.0585);Loss of stability (P = 0.0585);Loss of stability (P = 0.0585);Loss of stability (P = 0.0585);Loss of stability (P = 0.0585);Loss of stability (P = 0.0585);Loss of stability (P = 0.0585);Loss of stability (P = 0.0585);Loss of stability (P = 0.0585);Loss of stability (P = 0.0585);Loss of stability (P = 0.0585);Loss of stability (P = 0.0585);.;Loss of stability (P = 0.0585);.;.;.;.;
MVP		0.93
MPC		4.9
ClinPred		0.99	D
GERP RS		4.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.92
gMVP		0.98

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.20
dbscSNV1_RF	Benign	0.49
SpliceAI score (max)		0.030		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: chr19-11123626;