Variant X-131273860-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 0P and 7B. BP4_ModerateBS1_SupportingBS2

The NM_001555.5(IGSF1):c.3947C>T(p.Thr1316Ile) variant causes a missense change. The variant allele was found at a frequency of 0.0000282 in 1,206,321 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 12 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000045 ( 0 hom., 2 hem., cov: 23)

Exomes 𝑓: 0.000026 ( 0 hom. 10 hem. )

Consequence

IGSF1
NM_001555.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.84

Variant links:

Genes affected

IGSF1 (HGNC:5948): (immunoglobulin superfamily member 1) This gene encodes a member of the immunoglobulin-like domain-containing superfamily. Proteins in this superfamily contain varying numbers of immunoglobulin-like domains and are thought to participate in the regulation of interactions between cells. Multiple transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Jan 2010]

IGSF1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -7 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.19317007).

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.0000448 (5/111505) while in subpopulation NFE AF= 0.0000943 (5/53036). AF 95% confidence interval is 0.000037. There are 0 homozygotes in gnomad4. There are 2 alleles in male gnomad4 subpopulation. Median coverage is 23. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

BS2

High Hemizygotes in GnomAd at 2 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
IGSF1	NM_001555.5 linkuse as main transcript	c.3947C>T	p.Thr1316Ile	missense_variant	20/20	ENST00000361420.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
IGSF1	ENST00000361420.8 linkuse as main transcript	c.3947C>T	p.Thr1316Ile	missense_variant	20/20	1	NM_001555.5	P4	Q8N6C5-1

Frequencies

GnomAD3 genomes

AF:

0.0000448

AC:

AN:

111505

Hom.:

Cov.:

AF XY:

0.0000594

AC XY:

AN XY:

33673

show subpopulations

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:

0.0000943

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000164

AC:

AN:

183202

Hom.:

AF XY:

0.00

AC XY:

AN XY:

67658

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

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:

0.0000367

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000265

AC:

AN:

1094816

Hom.:

Cov.:

AF XY:

0.0000278

AC XY:

AN XY:

360308

show subpopulations

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:

0.0000334

Gnomad4 OTH exome

AF:

0.0000217

GnomAD4 genome

AF:

0.0000448

AC:

AN:

111505

Hom.:

Cov.:

AF XY:

0.0000594

AC XY:

AN XY:

33673

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000943

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000642

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000149

AC:

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 06, 2022

The c.3962C>T (p.T1321I) alteration is located in exon 20 (coding exon 19) of the IGSF1 gene. This alteration results from a C to T substitution at nucleotide position 3962, causing the threonine (T) at amino acid position 1321 to be replaced by an isoleucine (I). 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

0.11

BayesDel_addAF

Benign

-0.32

BayesDel_noAF

Benign

-0.59

Cadd

Benign

Dann

Uncertain

0.97

FATHMM_MKL

Benign

0.61

M_CAP

Benign

0.061

MetaRNN

Benign

0.19

T;T;T;T

MetaSVM

Benign

-0.89

MutationTaster

Benign

1.0

N;N;N;N

PrimateAI

Benign

0.44

PROVEAN

Benign

-1.2

N;N;N;N

REVEL

Benign

0.10

Sift

Uncertain

0.0020

D;D;D;D

Sift4G

Uncertain

0.0040

D;D;D;D

Polyphen

0.0070

B;B;.;B

Vest4

0.49

MVP

0.20

MPC

0.58

ClinPred

0.33

GERP RS

4.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.12

gMVP

0.79

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

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