dbSNP rs2077163: ITPR3:p.His721Gln (chr6-33669130-C-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_002224.4(ITPR3):c.2163C>A(p.His721Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,682 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. H721H) has been classified as Benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

ITPR3
NM_002224.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -3.04

Publications

1 publications found

Variant links:

Genes affected

ITPR3 (HGNC:6182): (inositol 1,4,5-trisphosphate receptor type 3) This gene encodes a receptor for inositol 1,4,5-trisphosphate, a second messenger that mediates the release of intracellular calcium. The receptor contains a calcium channel at the C-terminus and the ligand-binding site at the N-terminus. Knockout studies in mice suggest that type 2 and type 3 inositol 1,4,5-trisphosphate receptors play a key role in exocrine secretion underlying energy metabolism and growth. [provided by RefSeq, Aug 2010]

ITPR3 Gene-Disease associations (from GenCC):

Charcot-Marie-Tooth disease, demyelinating, type 1J
Inheritance: AD Classification: DEFINITIVE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics

ITPR3 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ITPR3	NM_002224.4 link	c.2163C>A	p.His721Gln	missense_variant	Exon 18 of 58	ENST00000605930.3	NP_002215.2	Q14573A6H8K3Q59ES2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ITPR3	ENST00000605930.3 link	c.2163C>A	p.His721Gln	missense_variant	Exon 18 of 58	1	NM_002224.4	ENSP00000475177.1		Q14573
ITPR3	ENST00000374316.9 link	c.2163C>A	p.His721Gln	missense_variant	Exon 19 of 59	5		ENSP00000363435.4		Q14573

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461682

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727146

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33476

American (AMR)

AF:

0.00

AC:

AN:

44704

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26126

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86232

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53358

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5742

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1111956

Other (OTH)

AF:

0.00

AC:

AN:

60388

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

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 v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.43

BayesDel_addAF

Uncertain

0.10

BayesDel_noAF

Benign

-0.090

CADD

Benign

1.9

(source)

DANN

Benign

0.95

DEOGEN2

Benign

0.24

T;T

Eigen

Benign

-0.51

Eigen_PC

Benign

-0.46

FATHMM_MKL

Benign

0.36

LIST_S2

Benign

0.84

.;T

M_CAP

Benign

0.040

MetaRNN

Uncertain

0.47

T;T

MetaSVM

Benign

-0.69

MutationAssessor

Benign

1.0

L;L

PhyloP100

-3.0

PrimateAI

Pathogenic

0.87

PROVEAN

Benign

0.27

N;.

REVEL

Uncertain

0.53

Sift

Benign

0.23

T;.

Sift4G

Benign

0.23

T;T

Polyphen

0.36

B;B

Vest4

0.58

MutPred

0.21

Loss of catalytic residue at H721 (P = 0.0542);Loss of catalytic residue at H721 (P = 0.0542);

MVP

0.89

MPC

0.67

ClinPred

0.35

GERP RS

1.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.20

gMVP

0.19

Mutation Taster

=78/22

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over