6-156778680-T-G

Variant names:

• chr6-156778680-T-G
• rs1276300860
• NM_001374828.1:c.1000T>G

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4_Moderate BS2

The NM_001374828.1(ARID1B):​c.1000T>G​(p.Cys334Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000227 in 1,500,808 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. C334R) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.000014 (0 hom., cov: 30)
  • Exomes 𝑓: 0.000024 (0 hom.)
• Consequence: ARID1B NM_001374828.1 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.40
• 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: Illumina, ClinGen, Orphanet
• Coffin-Siris syndrome 1

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

ENSG00000296922 (HGNC:):

ACMG classification

Our verdict: Likely_benign. The variant received -6 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.22624573).
• BS2: High AC in GnomAdExome4 at 32 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001374828.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ARID1B	NM_001374828.1	MANE Select	c.1000T>G	p.Cys334Gly	missense	Exon 1 of 20	NP_001361757.1	A0A6Q8NVI4
	ARID1B	NM_001438482.1		c.1000T>G	p.Cys334Gly	missense	Exon 1 of 21	NP_001425411.1
	ARID1B	NM_001438483.1		c.1000T>G	p.Cys334Gly	missense	Exon 1 of 21	NP_001425412.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ARID1B	ENST00000636930.2	TSL:2 MANE Select	c.1000T>G	p.Cys334Gly	missense	Exon 1 of 20	ENSP00000490491.2	A0A6Q8NVI4
	ARID1B	ENST00000346085.10	TSL:1	c.1000T>G	p.Cys334Gly	missense	Exon 2 of 21	ENSP00000344546.5	A0A3F2YNW7
	ARID1B	ENST00000350026.11	TSL:1	c.1000T>G	p.Cys334Gly	missense	Exon 1 of 19	ENSP00000055163.8	Q8NFD5-5

Frequencies

GnomAD3 genomes AF: 0.0000136 AC: 2 AN: 146718 Hom.: 0 Cov.: 30

Gnomad AFR AF: 0.00

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: 0.0000302

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.0000236 AC: 32 AN: 1354090 Hom.: 0 Cov.: 37 AF XY: 0.0000194 AC XY: 13 AN XY: 668630

African (AFR) AF: 0.00 AC: 0 AN: 28696

American (AMR) AF: 0.00 AC: 0 AN: 32874

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 23688

East Asian (EAS) AF: 0.00 AC: 0 AN: 31838

South Asian (SAS) AF: 0.00 AC: 0 AN: 76444

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 42968

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5350

European-Non Finnish (NFE) AF: 0.0000303 AC: 32 AN: 1056574

Other (OTH) AF: 0.00 AC: 0 AN: 55658

GnomAD4 genome AF: 0.0000136 AC: 2 AN: 146718 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 71594

African (AFR) AF: 0.00 AC: 0 AN: 39892

American (AMR) AF: 0.00 AC: 0 AN: 14916

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3422

East Asian (EAS) AF: 0.00 AC: 0 AN: 4736

South Asian (SAS) AF: 0.00 AC: 0 AN: 4588

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 9746

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 284

European-Non Finnish (NFE) AF: 0.0000302 AC: 2 AN: 66216

Other (OTH) AF: 0.00 AC: 0 AN: 2032

Alfa AF: 0.00 Hom.: 0

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Astrocytoma (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.37
BayesDel_addAF	Benign	-0.13	T
BayesDel_noAF	Benign	-0.42
CADD	Benign	18
DANN	Benign	0.77
DEOGEN2	Benign	0.027	T
Eigen	Benign	-0.59
Eigen_PC	Benign	-0.48
FATHMM_MKL	Benign	0.31	N
LIST_S2	Benign	0.73	T
M_CAP	Pathogenic	0.85	D
MetaRNN	Benign	0.23	T
MetaSVM	Benign	-0.93	T
MutationAssessor	Benign	1.1	L
PhyloP100		1.4
PrimateAI	Pathogenic	0.93	D
PROVEAN	Benign	-1.3	N
REVEL	Benign	0.034
Sift	Uncertain	0.020	D
Sift4G	Benign	0.21	T
Polyphen		0.0010	B
Vest4		0.21
MutPred		0.35		Gain of relative solvent accessibility (P = 0.09)
MVP		0.068
MPC		0.36
ClinPred		0.23	T
GERP RS		1.5
Varity_R		0.23
gMVP		0.22
Mutation Taster		=78/22	polymorphism

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: rs1276300860; hg19: chr6-157099814;