Variant chr2-127502870-T-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_017969.3(IWS1):c.1412A>C(p.Asn471Thr) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.0000198 in 1,518,914 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000018 ( 0 hom. )

Consequence

IWS1
NM_017969.3 missense, splice_region

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.83

Variant links:

Genes affected

IWS1 (HGNC:25467): (interacts with SUPT6H, CTD assembly factor 1) Involved in regulation of histone modification; regulation of mRNA export from nucleus; and regulation of mRNA processing. Located in nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

IWS1 links:

IWS1 (HGNC:):

IWS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.2442807).

BS2

High AC in GnomAd4 at 6 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
IWS1	NM_017969.3 linkuse as main transcript	c.1412A>C	p.Asn471Thr	missense_variant, splice_region_variant	5/14	ENST00000295321.9	NP_060439.2	Q96ST2-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
IWS1	ENST00000295321.9 linkuse as main transcript	c.1412A>C	p.Asn471Thr	missense_variant, splice_region_variant	5/14	1	NM_017969.3	ENSP00000295321.4		Q96ST2-1

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152242

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000122

AC:

AN:

245772

Hom.:

AF XY:

0.0000225

AC XY:

AN XY:

133048

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000298

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000178

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000176

AC:

AN:

1366672

Hom.:

Cov.:

AF XY:

0.0000234

AC XY:

AN XY:

685078

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000911

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:

0.0000155

Gnomad4 OTH exome

AF:

0.0000350

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152242

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74378

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000735

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000673

Hom.:

Bravo

AF:

0.0000302

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 04, 2022

The c.1412A>C (p.N471T) alteration is located in exon 5 (coding exon 5) of the IWS1 gene. This alteration results from a A to C substitution at nucleotide position 1412, causing the asparagine (N) at amino acid position 471 to be replaced by a threonine (T). 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

0.20

BayesDel_addAF

Benign

-0.22

BayesDel_noAF

Benign

-0.46

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.020

Eigen

Uncertain

0.33

Eigen_PC

Uncertain

0.33

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.92

M_CAP

Benign

0.0091

MetaRNN

Benign

0.24

MetaSVM

Benign

-0.99

MutationAssessor

Benign

1.9

PrimateAI

Uncertain

0.66

PROVEAN

Benign

-1.5

REVEL

Benign

0.10

Sift

Uncertain

0.028

Sift4G

Benign

0.29

Polyphen

0.99

Vest4

0.35

MutPred

0.23

Loss of helix (P = 0.0167);

MVP

0.38

MPC

0.18

ClinPred

0.44

GERP RS

4.6

Varity_R

0.13

gMVP

0.016

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over