1-26697129-C-CGCG

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 1P and 5B. PM4_SupportingBP6BS2

The NM_006015.6(ARID1A):c.735_737dupGGC(p.Ala246dup) variant causes a disruptive inframe insertion change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000468 in 1,437,258 control chromosomes in the GnomAD database, including 1 homozygotes. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00032 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00049 ( 1 hom. )

Consequence

ARID1A
NM_006015.6 disruptive_inframe_insertion

Scores

Not classified

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:4

Conservation

PhyloP100: 2.15

Publications

0 publications found

Variant links:

COSMIC-nc: COSV99081685

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]

ARID1A Gene-Disease associations (from GenCC):

Coffin-Siris syndrome
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
intellectual disability, autosomal dominant 14
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Illumina, G2P, Labcorp Genetics (formerly Invitae)

ARID1A links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

PM4

Nonframeshift variant in NON repetitive region in NM_006015.6. Strenght limited to Supporting due to length of the change: 1aa.

BP6

Variant 1-26697129-C-CGCG is Benign according to our data. Variant chr1-26697129-C-CGCG is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 210263.

BS2

High AC in GnomAd4 at 48 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006015.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ARID1A	NM_006015.6	MANE Select	c.735_737dupGGC	p.Ala246dup	disruptive_inframe_insertion	Exon 1 of 20	NP_006006.3
	ARID1A	NM_139135.4		c.735_737dupGGC	p.Ala246dup	disruptive_inframe_insertion	Exon 1 of 20	NP_624361.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
ARID1A	ENST00000324856.13	TSL:1 MANE Select	c.735_737dupGGC	p.Ala246dup	disruptive_inframe_insertion	Exon 1 of 20	ENSP00000320485.7
ARID1A	ENST00000850904.1		c.735_737dupGGC	p.Ala246dup	disruptive_inframe_insertion	Exon 1 of 20	ENSP00000520984.1
ARID1A	ENST00000457599.7	TSL:5	c.735_737dupGGC	p.Ala246dup	disruptive_inframe_insertion	Exon 1 of 20	ENSP00000387636.2

Frequencies

GnomAD3 genomes

AF:

0.000317

AC:

AN:

151218

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000243

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:

0.000561

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000216

AC:

AN:

55646

AF XY:

0.000312

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000449

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000486

AC:

625

AN:

1286040

Hom.:

Cov.:

AF XY:

0.000449

AC XY:

283

AN XY:

630792

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

25190

American (AMR)

AF:

0.00

AC:

AN:

16132

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19138

East Asian (EAS)

AF:

0.00

AC:

AN:

28772

South Asian (SAS)

AF:

0.00

AC:

AN:

61998

European-Finnish (FIN)

AF:

0.00

AC:

AN:

44818

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5216

European-Non Finnish (NFE)

AF:

0.000588

AC:

607

AN:

1032092

Other (OTH)

AF:

0.000342

AC:

AN:

52684

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.491

Heterozygous variant carriers

128

171

214

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

112

140

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000317

AC:

AN:

151218

Hom.:

Cov.:

AF XY:

0.000298

AC XY:

AN XY:

73860

show subpopulations

African (AFR)

AF:

0.000243

AC:

AN:

41148

American (AMR)

AF:

0.00

AC:

AN:

15242

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3456

East Asian (EAS)

AF:

0.00

AC:

AN:

5066

South Asian (SAS)

AF:

0.00

AC:

AN:

4786

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10558

Middle Eastern (MID)

AF:

0.00

AC:

AN:

306

European-Non Finnish (NFE)

AF:

0.000561

AC:

AN:

67684

Other (OTH)

AF:

0.00

AC:

AN:

2066

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.506

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0000540

Hom.:

Bravo

AF:

0.000287

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:4

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:3

May 26, 2017

Eurofins Ntd Llc (ga)

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Jun 10, 2020

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Oct 01, 2024

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

ARID1A: BP3, BS1

Jan 21, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

not specified

Uncertain:1

Jun 24, 2015

Genetic Services Laboratory, University of Chicago

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

ARID1A-related disorder

Benign:1

May 04, 2021

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications).

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

PhyloP100

2.2

Mutation Taster

=76/24

polymorphism

(source)

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over