chr6-157200764-CAT-C

Variant names:

• chr6-157200764-CAT-C
• rs797044859
• NM_001374828.1:c.4540_4541delAT

Variant summary

Our verdict is Pathogenic. The variant received 12 ACMG points: 12P and 0B. PVS1 PM2 PP5_Moderate

The NM_001438482.1(ARID1B):​c.4669_4670delAT​(p.Met1557ValfsTer67) variant causes a frameshift change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (★). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 32)
• Consequence: ARID1B NM_001438482.1 frameshift
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 4.75
• Publications: 1 publications found

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]

ARID1B Gene-Disease associations (from GenCC):

• Coffin-Siris syndrome

  Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, Illumina, ClinGen
• Coffin-Siris syndrome 1

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics

ACMG classification

Our verdict: Pathogenic. The variant received 12 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 6-157200764-CAT-C is Pathogenic according to our data. Variant chr6-157200764-CAT-C is described in ClinVar as Pathogenic. ClinVar VariationId is 208654.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001438482.1. 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
	ARID1B	NM_001374828.1	MANE Select	c.4540_4541delAT	p.Met1514ValfsTer67	frameshift	Exon 18 of 20	NP_001361757.1
	ARID1B	NM_001438482.1		c.4669_4670delAT	p.Met1557ValfsTer67	frameshift	Exon 19 of 21	NP_001425411.1
	ARID1B	NM_001438483.1		c.4582_4583delAT	p.Met1528ValfsTer67	frameshift	Exon 19 of 21	NP_001425412.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ARID1B	ENST00000636930.2	TSL:2 MANE Select	c.4540_4541delAT	p.Met1514ValfsTer67	frameshift	Exon 18 of 20	ENSP00000490491.2
	ARID1B	ENST00000346085.10	TSL:1	c.4420_4421delAT	p.Met1474ValfsTer67	frameshift	Exon 19 of 21	ENSP00000344546.5
	ARID1B	ENST00000350026.11	TSL:1	c.4381_4382delAT	p.Met1461ValfsTer67	frameshift	Exon 17 of 19	ENSP00000055163.8

Frequencies

GnomAD3 genomes Cov.: 32

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions as Germline

Significance: Pathogenic

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
1	-	-	Inborn genetic diseases (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		4.7
Mutation Taster		=0/200	disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs797044859; hg19: chr6-157521898;