NM_001374828.1:c.1229_1234dupGAGGAG

Variant names:

• chr6-156778889-C-CGGAGGA
• rs747790383
• NM_001374828.1:c.1229_1234dupGAGGAG

Variant summary

Our verdict is Benign. Variant got -17 ACMG points: 0P and 17B. BP3 BP6_Very_Strong BS1 BS2

The NM_001374828.1(ARID1B):​c.1229_1234dupGAGGAG​(p.Gly410_Gly411dup) variant causes a disruptive inframe insertion change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000454 in 1,366,588 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.00035 (0 hom., cov: 29)
  • Exomes 𝑓: 0.00047 (0 hom.)
• Consequence: ARID1B NM_001374828.1 disruptive_inframe_insertion
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5
• Conservation: PhyloP100: 1.98

Genes affected

ARID1B (HGNC:18040): (AT-rich interaction domain 1B) This locus encodes an AT-rich DNA interacting domain-containing protein. The encoded protein is a component of the SWI/SNF chromatin remodeling complex and may play a role in cell-cycle activation. The protein encoded by this locus is similar to AT-rich interactive domain-containing protein 1A. These two proteins function as alternative, mutually exclusive ARID-subunits of the SWI/SNF complex. The associated complexes play opposing roles. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Oct 2016]

ACMG classification

Verdict is Benign. Variant got -17 ACMG points.

• BP3: Nonframeshift variant in repetitive region in NM_001374828.1
• BP6: Variant 6-156778889-C-CGGAGGA is Benign according to our data. Variant chr6-156778889-C-CGGAGGA is described in ClinVar as [Likely_benign]. Clinvar id is 588854.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS1: Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.00035 (50/143054) while in subpopulation SAS AF= 0.000674 (3/4448). AF 95% confidence interval is 0.000334. There are 0 homozygotes in gnomad4. There are 19 alleles in male gnomad4 subpopulation. Median coverage is 29. This position pass quality control queck.
• BS2: High AC in GnomAd4 at 50 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ARID1B	NM_001374828.1	c.1229_1234dupGAGGAG	p.Gly410_Gly411dup	disruptive_inframe_insertion	Exon 1 of 20	ENST00000636930.2	NP_001361757.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ARID1B	ENST00000636930.2	c.1229_1234dupGAGGAG	p.Gly410_Gly411dup	disruptive_inframe_insertion	Exon 1 of 20	2	NM_001374828.1	ENSP00000490491.2

Frequencies

GnomAD3 genomes AF: 0.000350 AC: 50 AN: 142980 Hom.: 0 Cov.: 29

Gnomad AFR AF: 0.000412

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000688

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000672

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000464

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.000180 AC: 6 AN: 33354 Hom.: 0 AF XY: 0.000151 AC XY: 3 AN XY: 19836

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 SAS exome AF: 0.000741

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000948

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.000466 AC: 570 AN: 1223534 Hom.: 0 Cov.: 35 AF XY: 0.000479 AC XY: 287 AN XY: 599374

Gnomad4 AFR exome AF: 0.000209

Gnomad4 AMR exome AF: 0.0000687

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.000222

Gnomad4 SAS exome AF: 0.000606

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000493

Gnomad4 OTH exome AF: 0.000749

GnomAD4 genome AF: 0.000350 AC: 50 AN: 143054 Hom.: 0 Cov.: 29 AF XY: 0.000272 AC XY: 19 AN XY: 69794

Gnomad4 AFR AF: 0.000411

Gnomad4 AMR AF: 0.0000687

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000674

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000464

Gnomad4 OTH AF: 0.00

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:3

Jul 01, 2023

CeGaT Center for Human Genetics Tuebingen

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

ARID1B: BS1, BS2 -

Oct 24, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jul 09, 2020

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

ARID1B-related disorder Benign:1

Mar 20, 2023

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). -

Inborn genetic diseases Benign:1

Jan 12, 2022

Ambry Genetics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs747790383; hg19: chr6-157100023;