rs387906846

chr1-26773716-C-Gchr1-26773716-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_006015.6(ARID1A):c.4003C>G(p.Arg1335Gly) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign 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. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1335Q) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: ARID1A NM_006015.6 missense, splice_region
• Scores: Splicing: ADA: 0.002558
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.05

Genes affected

ARID1A (HGNC:11110): (AT-rich interaction domain 1A) This gene encodes a member of the SWI/SNF family, whose members 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. It possesses at least two conserved domains that could be important for its function. First, it has a DNA-binding domain that can specifically bind an AT-rich DNA sequence known to be recognized by a SNF/SWI complex at the beta-globin locus. Second, the C-terminus of the protein can stimulate glucocorticoid receptor-dependent transcriptional activation. It is thought that the protein encoded by this gene confers specificity to the SNF/SWI complex and may recruit the complex to its targets through either protein-DNA or protein-protein interactions. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.2659179).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ARID1A	NM_006015.6	c.4003C>G	p.Arg1335Gly	missense_variant, splice_region_variant	16/20	ENST00000324856.13
ARID1A	NM_139135.4	c.4003C>G	p.Arg1335Gly	missense_variant, splice_region_variant	16/20

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ARID1A	ENST00000324856.13	c.4003C>G	p.Arg1335Gly	missense_variant, splice_region_variant	16/20	1	NM_006015.6

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.58
BayesDel_addAF	Benign	-0.065	T
BayesDel_noAF	Benign	-0.33
Cadd	Benign	23
Dann	Uncertain	0.99
Eigen	Uncertain	0.45
Eigen_PC	Uncertain	0.44
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Benign	0.79	T;T;T;T;T;T
M_CAP	Benign	0.0070	T
MetaRNN	Benign	0.27	T;T;T;T;T;T
MetaSVM	Benign	-1.0	T
MutationTaster	Benign	1.0	D;N;N;N
PrimateAI	Uncertain	0.76	T
Polyphen		0.83, 0.11, 0.69	.;P;B;P;.;.
Vest4		0.77, 0.74, 0.71, 0.73
MutPred		0.25		.;Loss of MoRF binding (P = 0.0646);Loss of MoRF binding (P = 0.0646);.;.;.;
MVP		0.56
MPC		0.67
ClinPred		0.92	D
GERP RS		4.5
Varity_R		0.28
gMVP		0.35

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.0026
dbscSNV1_RF	Benign	0.14
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: rs387906846; hg19: chr1-27100207;