Genetic Variant IGSF23:p.Ala160Glu (chr19-44627507-C-A) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001205280.2(IGSF23):c.479C>A(p.Ala160Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000715 in 1,398,242 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A160V) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 7.2e-7 ( 0 hom. )

Consequence

IGSF23
NM_001205280.2 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.119

Publications

0 publications found

Variant links:

Genes affected

IGSF23 (HGNC:40040): (immunoglobulin superfamily member 23) This gene encodes a protein that has one immunoglobulin (Ig) domain and is a member of the immunoglobulin superfamily. Proteins in this superfamily are usually found on or in cell membranes and act as receptors in immune response pathways. [provided by RefSeq, Nov 2011]

IGSF23 links:

CEACAM16-AS1 (HGNC:55317): (CEACAM16, CEACAM19 and PVR antisense RNA 1)

CEACAM16-AS1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.07785088).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001205280.2. 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
	IGSF23	NM_001205280.2	MANE Select	c.479C>A	p.Ala160Glu	missense	Exon 3 of 5	NP_001192209.1	A1L1A6

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
IGSF23	ENST00000402988.6	TSL:3 MANE Select	c.479C>A	p.Ala160Glu	missense	Exon 3 of 5	ENSP00000385592.1	A1L1A6
IGSF23	ENST00000441389.1	TSL:1	c.314C>A	p.Ala105Glu	missense	Exon 2 of 3	ENSP00000407344.1	H0Y6S3
IGSF23	ENST00000911252.1		c.566C>A	p.Ala189Glu	missense	Exon 4 of 6	ENSP00000581311.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

7.15e-7

AC:

AN:

1398242

Hom.:

Cov.:

AF XY:

0.00000145

AC XY:

AN XY:

689640

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

31598

American (AMR)

AF:

0.00

AC:

AN:

35702

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25180

East Asian (EAS)

AF:

0.00

AC:

AN:

35738

South Asian (SAS)

AF:

0.00

AC:

AN:

79230

European-Finnish (FIN)

AF:

0.00

AC:

AN:

48164

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5698

European-Non Finnish (NFE)

AF:

9.27e-7

AC:

AN:

1078940

Other (OTH)

AF:

0.00

AC:

AN:

57992

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.68

BayesDel_addAF

Benign

-0.18

BayesDel_noAF

Benign

-0.50

CADD

Benign

9.3

(source)

DANN

Benign

0.67

DEOGEN2

Benign

0.020

Eigen

Benign

-0.94

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.0075

LIST_S2

Benign

0.33

M_CAP

Benign

0.0046

MetaRNN

Benign

0.078

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.69

PhyloP100

-0.12

PrimateAI

Benign

0.28

PROVEAN

Benign

-0.47

REVEL

Benign

0.042

Sift

Uncertain

0.022

Sift4G

Uncertain

0.013

Polyphen

0.031

Vest4

0.42

MutPred

0.38

Gain of relative solvent accessibility (P = 0.09)

MVP

0.081

ClinPred

0.11

GERP RS

0.62

Varity_R

0.082

gMVP

0.38

Mutation Taster

=100/0

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over