3-52799789-C-G

Variant names:

• chr3-52799789-C-G
• NM_002217.4:c.943C>G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_002217.4(ITIH3):​c.943C>G​(p.Gln315Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Q315K) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: ITIH3 NM_002217.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.771

Genes affected

ITIH3 (HGNC:6168): (inter-alpha-trypsin inhibitor heavy chain 3) This gene encodes the heavy chain subunit of the pre-alpha-trypsin inhibitor complex. This complex may stabilize the extracellular matrix through its ability to bind hyaluronic acid. Polymorphisms of this gene may be associated with increased risk for schizophrenia and major depressive disorder. This gene is present in an inter-alpha-trypsin inhibitor family gene cluster on chromosome 3. [provided by RefSeq, Jul 2015]

ACMG classification

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=0.09588426).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ITIH3	NM_002217.4	c.943C>G	p.Gln315Glu	missense_variant	Exon 9 of 22	ENST00000449956.3	NP_002208.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ITIH3	ENST00000449956.3	c.943C>G	p.Gln315Glu	missense_variant	Exon 9 of 22	1	NM_002217.4	ENSP00000415769.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 40

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.074
BayesDel_addAF	Benign	-0.12	T
BayesDel_noAF	Benign	-0.42
CADD	Benign	16
DANN	Benign	0.91
DEOGEN2	Benign	0.0072	T;.;T
Eigen	Benign	-0.92
Eigen_PC	Benign	-0.91
FATHMM_MKL	Benign	0.045	N
LIST_S2	Benign	0.17	T;T;T
M_CAP	Benign	0.047	D
MetaRNN	Benign	0.096	T;T;T
MetaSVM	Benign	-0.41	T
MutationAssessor	Benign	0.63	.;.;N
PrimateAI	Benign	0.34	T
PROVEAN	Benign	-0.10	.;N;N
REVEL	Benign	0.12
Sift	Benign	0.063	.;T;D
Sift4G	Benign	0.30	T;T;T
Polyphen		0.0, 0.0020	.;B;B
Vest4		0.11
MutPred		0.30		Gain of disorder (P = 0.061);Gain of disorder (P = 0.061);Gain of disorder (P = 0.061);
MVP		0.64
MPC		0.12
ClinPred		0.11	T
GERP RS		4.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.13
gMVP		0.42

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr3-52833805;