rs199751490

Variant summary

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

The NM_002218.5(ITIH4):ā€‹c.2234G>Cā€‹(p.Arg745Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,516 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: not found (cov: 33)
Exomes š‘“: 6.8e-7 ( 0 hom. )

Consequence

ITIH4
NM_002218.5 missense

Scores

19

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -4.25
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]

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=0.054837942).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
ITIH4NM_002218.5 linkc.2234G>C p.Arg745Pro missense_variant Exon 20 of 24 ENST00000266041.9 NP_002209.2 Q14624-1B7ZKJ8B2RMS9
ITIH4NM_001166449.2 linkc.2144G>C p.Arg715Pro missense_variant Exon 18 of 22 NP_001159921.1 Q14624-3B7ZKJ8

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
ITIH4ENST00000266041.9 linkc.2234G>C p.Arg745Pro missense_variant Exon 20 of 24 1 NM_002218.5 ENSP00000266041.4 Q14624-1
ENSG00000243696ENST00000468472.1 linkn.*3870G>C non_coding_transcript_exon_variant Exon 20 of 24 2 ENSP00000422253.1 D6R8Y8
ENSG00000243696ENST00000468472.1 linkn.*3870G>C 3_prime_UTR_variant Exon 20 of 24 2 ENSP00000422253.1 D6R8Y8

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD3 exomes
AF:
0.00000400
AC:
1
AN:
250196
Hom.:
0
AF XY:
0.00
AC XY:
0
AN XY:
135538
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:
0.00000886
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
6.84e-7
AC:
1
AN:
1461516
Hom.:
0
Cov.:
33
AF XY:
0.00
AC XY:
0
AN XY:
727050
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:
8.99e-7
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.16
BayesDel_addAF
Benign
-0.30
T
BayesDel_noAF
Benign
-0.66
CADD
Benign
0.010
DANN
Benign
0.69
DEOGEN2
Benign
0.18
T;T;.
Eigen
Benign
-1.8
Eigen_PC
Benign
-1.9
FATHMM_MKL
Benign
0.0078
N
LIST_S2
Benign
0.64
T;T;T
M_CAP
Benign
0.0061
T
MetaRNN
Benign
0.055
T;T;T
MetaSVM
Benign
-0.96
T
MutationAssessor
Benign
1.6
L;.;.
PrimateAI
Benign
0.18
T
PROVEAN
Benign
-1.9
N;N;N
REVEL
Benign
0.022
Sift
Benign
0.17
T;T;T
Sift4G
Benign
0.35
T;T;T
Polyphen
0.11
B;B;.
Vest4
0.24
MutPred
0.26
.;Loss of catalytic residue at R750 (P = 0.0384);.;
MVP
0.20
MPC
0.39
ClinPred
0.10
T
GERP RS
-7.3
Varity_R
0.36
gMVP
0.65

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.

Other links and lift over

dbSNP: rs199751490; hg19: chr3-52852130; API