Variant chr3-52817033-C-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_002218.5(ITIH4):c.2322G>T(p.Glu774Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000397 in 1,613,824 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.00021 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000022 ( 0 hom. )

Consequence

ITIH4
NM_002218.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.350

Variant links:

Genes affected

ITIH4 (HGNC:6169): (inter-alpha-trypsin inhibitor heavy chain 4) The protein encoded by this gene is secreted into the blood, where it is cleaved by plasma kallikrein into two smaller forms. Expression of this gene has been detected only in liver, and it seems to be upregulated during surgical trauma. This gene is part of a cluster of similar genes on chromosome 3. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2009]

ITIH4 links:

ENSG00000243696 (HGNC:):

ENSG00000243696 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.033620745).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ITIH4	NM_002218.5 linkuse as main transcript	c.2322G>T	p.Glu774Asp	missense_variant	21/24	ENST00000266041.9	NP_002209.2	Q14624-1B7ZKJ8B2RMS9
ITIH4	NM_001166449.2 linkuse as main transcript	c.2232G>T	p.Glu744Asp	missense_variant	19/22		NP_001159921.1	Q14624-3B7ZKJ8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
ITIH4	ENST00000266041.9 linkuse as main transcript	c.2322G>T	p.Glu774Asp	missense_variant	21/24	1	NM_002218.5	ENSP00000266041.4	Q14624-1
ENSG00000243696	ENST00000468472.1 linkuse as main transcript	n.*3958G>T		non_coding_transcript_exon_variant	21/24	2		ENSP00000422253.1	D6R8Y8
ENSG00000243696	ENST00000468472.1 linkuse as main transcript	n.*3958G>T		3_prime_UTR_variant	21/24	2		ENSP00000422253.1	D6R8Y8

Frequencies

GnomAD3 genomes

AF:

0.000210

AC:

AN:

152238

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000748

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000399

AC:

AN:

250842

Hom.:

AF XY:

0.0000443

AC XY:

AN XY:

135582

show subpopulations

Gnomad AFR exome

AF:

0.000431

Gnomad AMR exome

AF:

0.0000579

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:

0.000164

GnomAD4 exome

AF:

0.0000219

AC:

AN:

1461468

Hom.:

Cov.:

AF XY:

0.0000193

AC XY:

AN XY:

727030

show subpopulations

Gnomad4 AFR exome

AF:

0.000687

Gnomad4 AMR exome

AF:

0.000112

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:

0.00

Gnomad4 OTH exome

AF:

0.0000662

GnomAD4 genome

AF:

0.000210

AC:

AN:

152356

Hom.:

Cov.:

AF XY:

0.000161

AC XY:

AN XY:

74496

show subpopulations

Gnomad4 AFR

AF:

0.000745

Gnomad4 AMR

AF:

0.0000653

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000152

Hom.:

Bravo

AF:

0.000257

ESP6500AA

AF:

0.000908

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000659

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

Nov 13, 2024

The c.2322G>T (p.E774D) alteration is located in exon 21 (coding exon 21) of the ITIH4 gene. This alteration results from a G to T substitution at nucleotide position 2322, causing the glutamic acid (E) at amino acid position 774 to be replaced by an aspartic acid (D). 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

0.12

BayesDel_addAF

Benign

-0.59

BayesDel_noAF

Benign

-0.66

CADD

Benign

0.37

DANN

Benign

0.79

DEOGEN2

Benign

0.21

T;T;.

Eigen

Benign

-0.77

Eigen_PC

Benign

-0.92

FATHMM_MKL

Benign

0.020

LIST_S2

Benign

0.54

T;T;T

M_CAP

Benign

0.0041

MetaRNN

Benign

0.034

T;T;T

MetaSVM

Benign

-0.98

MutationAssessor

Benign

1.4

L;.;.

PrimateAI

Benign

0.28

PROVEAN

Benign

-1.1

N;N;N

REVEL

Benign

0.016

Sift

Benign

0.41

T;T;T

Sift4G

Benign

0.54

T;T;T

Polyphen

0.029

B;B;.

Vest4

0.14

MutPred

0.40

.;Loss of sheet (P = 0.0126);.;

MVP

0.45

MPC

0.26

ClinPred

0.0057

GERP RS

-0.28

Varity_R

0.12

gMVP

0.34

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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