Genetic Variant IZUMO4:p.Arg125His (chr19-2097932-G-A) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001039846.2(IZUMO4):c.374G>A(p.Arg125His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000411 in 1,460,716 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

IZUMO4
NM_001039846.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.368

Variant links:

Genes affected

IZUMO4 (HGNC:26950): (IZUMO family member 4) Located in nucleus. [provided by Alliance of Genome Resources, Apr 2022]

IZUMO4 links:

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ACMG classification

Classification made for transcript

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=0.115706354).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
IZUMO4	NM_001039846.2 link	c.374G>A	p.Arg125His	missense_variant	Exon 4 of 10	ENST00000395301.8	NP_001034935.1	Q1ZYL8-1
IZUMO4	NM_001031735.3 link	c.374G>A	p.Arg125His	missense_variant	Exon 4 of 9		NP_001026905.2	Q1ZYL8-2
IZUMO4	NM_001363588.2 link	c.374G>A	p.Arg125His	missense_variant	Exon 4 of 8		NP_001350517.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
IZUMO4	ENST00000395301.8 link	c.374G>A	p.Arg125His	missense_variant	Exon 4 of 10	1	NM_001039846.2	ENSP00000378712.3		Q1ZYL8-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000399

AC:

AN:

250722

Hom.:

AF XY:

0.00000737

AC XY:

AN XY:

135702

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000411

AC:

AN:

1460716

Hom.:

Cov.:

AF XY:

0.00000550

AC XY:

AN XY:

726668

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

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:

0.00000360

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 05, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.374G>A (p.R125H) alteration is located in exon 4 (coding exon 4) of the IZUMO4 gene. This alteration results from a G to A substitution at nucleotide position 374, causing the arginine (R) at amino acid position 125 to be replaced by a histidine (H). 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

0.097

BayesDel_addAF

Benign

-0.28

BayesDel_noAF

Benign

-0.56

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.016

T;.;T

Eigen

Benign

-0.84

Eigen_PC

Benign

-0.80

FATHMM_MKL

Benign

0.23

LIST_S2

Benign

0.79

T;T;T

M_CAP

Benign

0.013

MetaRNN

Benign

0.12

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.20

N;N;.

PrimateAI

Benign

0.31

PROVEAN

Benign

-2.3

N;.;.

REVEL

Benign

0.037

Sift

Benign

0.089

T;.;.

Sift4G

Benign

0.076

T;T;T

Polyphen

0.032

B;.;.

Vest4

0.39

MutPred

0.27

Loss of helix (P = 0.2271);Loss of helix (P = 0.2271);Loss of helix (P = 0.2271);

MVP

0.048

MPC

0.16

ClinPred

0.11

GERP RS

1.8

Varity_R

0.043

gMVP

0.48

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