rs778071122

Variant names:

• chr19-10986459-C-G
• NM_001387283.1:c.626C>G

Your query was ambiguous. Multiple possible variants found:

• chr19-10986459-C-G
• chr19-10986459-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP2 PP3

The NM_003072.5(SMARCA4):​c.626C>G​(p.Pro209Arg) variant causes a missense 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. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: SMARCA4 NM_003072.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.80

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 Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the SMARCA4 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 59 curated pathogenic missense variants (we use a threshold of 10). The gene has 56 curated benign missense variants. Gene score misZ: 6.8459 (above the threshold of 3.09). Trascript score misZ: 8.7957 (above the threshold of 3.09). GenCC associations: The gene is linked to 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, 0.756

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SMARCA4	NM_001387283.1	c.626C>G	p.Pro209Arg	missense_variant	Exon 4 of 36	ENST00000646693.2	NP_001374212.1
SMARCA4	NM_003072.5	c.626C>G	p.Pro209Arg	missense_variant	Exon 4 of 35	ENST00000344626.10	NP_003063.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SMARCA4	ENST00000646693.2	c.626C>G	p.Pro209Arg	missense_variant	Exon 4 of 36		NM_001387283.1	ENSP00000495368.1
SMARCA4	ENST00000344626.10	c.626C>G	p.Pro209Arg	missense_variant	Exon 4 of 35	1	NM_003072.5	ENSP00000343896.4
SMARCA4	ENST00000643549.1	c.626C>G	p.Pro209Arg	missense_variant	Exon 4 of 35			ENSP00000493975.1
SMARCA4	ENST00000541122.6	c.626C>G	p.Pro209Arg	missense_variant	Exon 5 of 35	5		ENSP00000445036.2
SMARCA4	ENST00000643296.1	c.626C>G	p.Pro209Arg	missense_variant	Exon 4 of 34			ENSP00000496635.1
SMARCA4	ENST00000644737.1	c.626C>G	p.Pro209Arg	missense_variant	Exon 4 of 34			ENSP00000495548.1
SMARCA4	ENST00000589677.5	c.626C>G	p.Pro209Arg	missense_variant	Exon 5 of 35	5		ENSP00000464778.1
SMARCA4	ENST00000643995.1	c.38C>G	p.Pro13Arg	missense_variant	Exon 1 of 32			ENSP00000496004.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Rhabdoid tumor predisposition syndrome 2 Uncertain:1

Apr 11, 2021

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces proline with arginine at codon 209 of the SMARCA4 protein (p.Pro209Arg). The proline residue is highly conserved and there is a moderate physicochemical difference between proline and arginine. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals with SMARCA4-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive, but these predictions have not been confirmed by published functional studies and their clinical significance is uncertain. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.77
BayesDel_addAF	Pathogenic	0.25	D
BayesDel_noAF	Uncertain	0.13
CADD	Uncertain	26
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.50	D;.;T;.;.;.;.;.;.;.;D;.;.;.;.;.;T;T
Eigen	Uncertain	0.64
Eigen_PC	Uncertain	0.60
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.88	.;D;.;.;.;.;D;.;.;.;D;.;D;D;D;D;D;D
M_CAP	Pathogenic	0.60	D
MetaRNN	Pathogenic	0.76	D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D
MetaSVM	Uncertain	0.55	D
MutationAssessor	Benign	1.6	L;.;.;.;L;L;.;L;L;L;L;L;L;L;L;L;.;.
PrimateAI	Uncertain	0.73	T
PROVEAN	Benign	-1.8	N;.;.;.;.;.;.;.;.;.;N;.;N;.;N;.;N;N
REVEL	Uncertain	0.57
Sift	Benign	0.040	D;.;.;.;.;.;.;.;.;.;D;.;D;.;D;.;D;D
Sift4G	Benign	0.077	T;.;.;.;.;.;.;.;.;.;T;.;T;T;T;T;T;T
Polyphen		1.0	D;.;D;.;.;.;.;.;.;.;D;.;.;.;.;.;.;D
Vest4		0.68
MutPred		0.26		Gain of MoRF binding (P = 0.0038);Gain of MoRF binding (P = 0.0038);Gain of MoRF binding (P = 0.0038);Gain of MoRF binding (P = 0.0038);Gain of MoRF binding (P = 0.0038);Gain of MoRF binding (P = 0.0038);Gain of MoRF binding (P = 0.0038);Gain of MoRF binding (P = 0.0038);Gain of MoRF binding (P = 0.0038);Gain of MoRF binding (P = 0.0038);Gain of MoRF binding (P = 0.0038);Gain of MoRF binding (P = 0.0038);Gain of MoRF binding (P = 0.0038);Gain of MoRF binding (P = 0.0038);Gain of MoRF binding (P = 0.0038);Gain of MoRF binding (P = 0.0038);Gain of MoRF binding (P = 0.0038);Gain of MoRF binding (P = 0.0038);
MVP		0.79
MPC		0.94
ClinPred		0.92	D
GERP RS		4.3
Varity_R		0.17
gMVP		0.51

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: chr19-11097135;