rs1060499843

Positions:

• chr6-157148769-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001374828.1(ARID1B):​c.2907G>A​(p.Met969Ile) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,460,934 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts 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. M969K) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: ARID1B NM_001374828.1 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.40

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 Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.26254374).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ARID1B	NM_001374828.1	c.2907G>A	p.Met969Ile	missense_variant	8/20	ENST00000636930.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ARID1B	ENST00000636930.2	c.2907G>A	p.Met969Ile	missense_variant	8/20	2	NM_001374828.1	A2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1460934 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 726748

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Mar 29, 2016

Variant identified in a genome or exome case(s) and assessed due to predicted null impact of the variant or pathogenic assertions in the literature or databases. Disclaimer: This variant has not undergone full assessment. The following are preliminary notes: Gene associated with coffin-siris syndrome - features include frequent infection, difficulty feeding, FTT, hypotonia. All published variants are LOF, and father carries this variant in the homozygous state. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.25
BayesDel_addAF	Benign	-0.067	T
BayesDel_noAF	Benign	-0.33
CADD	Uncertain	24
DANN	Uncertain	0.99
DEOGEN2	Benign	0.044	.;T;.;.;T;T;.;T;.
Eigen	Uncertain	0.19
Eigen_PC	Uncertain	0.39
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Benign	0.81	T;T;T;T;T;D;T;D;T
M_CAP	Benign	0.0059	T
MetaRNN	Benign	0.26	T;T;T;T;T;T;T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.4	.;L;L;.;.;.;.;.;.
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Uncertain	0.51	T
PROVEAN	Benign	-2.3	.;N;.;.;N;.;.;.;.
REVEL	Benign	0.13
Sift	Benign	0.066	.;T;.;.;D;.;.;.;.
Sift4G	Benign	0.27	.;T;.;.;T;.;.;.;.
Polyphen		0.15, 0.23, 0.030	.;B;.;B;.;.;.;.;B
Vest4		0.40
MutPred		0.32		.;Loss of methylation at R885 (P = 0.0496);Loss of methylation at R885 (P = 0.0496);.;.;.;.;.;.;
MVP		0.30
MPC		0.39
ClinPred		0.84	D
GERP RS		6.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.22
gMVP		0.38

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

Publications

LitVar

Other links and lift over

dbSNP: rs1060499843; hg19: chr6-157469903;