NM_031288.4:c.770C>T

Variant names:

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_031288.4(INO80B):c.770C>T(p.Ala257Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000547 in 1,516,868 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00032 ( 2 hom., cov: 33)

Exomes 𝑓: 0.000026 ( 0 hom. )

Consequence

INO80B
NM_031288.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.53

Publications

0 publications found

Variant links:

Genes affected

INO80B (HGNC:13324): (INO80 complex subunit B) This gene encodes a subunit of an ATP-dependent chromatin remodeling complex, INO80, which plays a role in DNA and nucleosome-activated ATPase activity and ATP-dependent nucleosome sliding. Readthrough transcription of this gene into the neighboring downstream gene, which encodes WW domain-binding protein 1, generates a non-coding transcript. [provided by RefSeq, Feb 2011]

INO80B links:

INO80B-WBP1 (HGNC:49199): (INO80B-WBP1 readthrough (NMD candidate)) This locus represents naturally occurring read-through transcription between the neighboring INO80B (INO80 complex subunit B) and WBP1 (WW domain-binding protein 1) genes on chromosome 2. The read-through transcript is a candidate for nonsense-mediated mRNA decay (NMD), and is unlikely to produce a protein product. [provided by RefSeq, Feb 2011]

INO80B-WBP1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.033274293).

BS2

High Homozygotes in GnomAd4 at 2 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
INO80B	NM_031288.4 link	c.770C>T	p.Ala257Val	missense_variant	Exon 5 of 5	ENST00000233331.12	NP_112578.2	Q9C086
INO80B-WBP1	NR_037849.1 link	n.864C>T		non_coding_transcript_exon_variant	Exon 5 of 8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
INO80B	ENST00000233331.12 link	c.770C>T	p.Ala257Val	missense_variant	Exon 5 of 5	1	NM_031288.4	ENSP00000233331.7		Q9C086
INO80B-WBP1	ENST00000452361.5 link	n.770C>T		non_coding_transcript_exon_variant	Exon 5 of 8	2		ENSP00000388677.1		J3KQ70

Frequencies

GnomAD3 genomes

AF:

0.000315

AC:

AN:

152180

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00307

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:

0.00

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.000196

AC:

AN:

112102

AF XY:

0.000129

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00110

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000256

AC:

AN:

1364688

Hom.:

Cov.:

AF XY:

0.0000193

AC XY:

AN XY:

672248

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

29384

American (AMR)

AF:

0.000989

AC:

AN:

31350

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

23448

East Asian (EAS)

AF:

0.00

AC:

AN:

34614

South Asian (SAS)

AF:

0.00

AC:

AN:

75634

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40068

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4664

European-Non Finnish (NFE)

AF:

0.00000374

AC:

AN:

1068848

Other (OTH)

AF:

0.00

AC:

AN:

56678

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.542

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.000315

AC:

AN:

152180

Hom.:

Cov.:

AF XY:

0.000511

AC XY:

AN XY:

74342

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41422

American (AMR)

AF:

0.00307

AC:

AN:

15286

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5202

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68018

Other (OTH)

AF:

0.000478

AC:

AN:

2094

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.491

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.000242

ExAC

AF:

0.0000111

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 07, 2023

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.770C>T (p.A257V) alteration is located in exon 5 (coding exon 5) of the INO80B gene. This alteration results from a C to T substitution at nucleotide position 770, causing the alanine (A) at amino acid position 257 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.085

BayesDel_addAF

Benign

-0.44

BayesDel_noAF

Benign

-0.45

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.028

Eigen

Benign

-0.64

Eigen_PC

Benign

-0.62

FATHMM_MKL

Benign

0.32

LIST_S2

Benign

0.79

M_CAP

Benign

0.012

MetaRNN

Benign

0.033

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.5

PhyloP100

2.5

PrimateAI

Uncertain

0.78

PROVEAN

Benign

-0.74

REVEL

Benign

0.041

Sift

Benign

0.15

Sift4G

Uncertain

0.021

Polyphen

0.042

Vest4

0.31

MutPred

0.41

Gain of sheet (P = 0.0344);

MVP

0.39

MPC

0.84

ClinPred

0.093

GERP RS

3.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.077

gMVP

0.40

Mutation Taster

=97/3

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

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

Publications

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NM_031288.4:c.770C>T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over