3-4782678-C-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -17 ACMG points: 0P and 17B. BP4_StrongBP6_Very_StrongBP7BS1

The NM_001378452.1(ITPR1):c.6447C>T(p.Asn2149Asn) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000786 in 1,603,232 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00032 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000054 ( 1 hom. )

Consequence

ITPR1
NM_001378452.1 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: -2.01

Publications

0 publications found

Variant links:

Genes affected

ITPR1 (HGNC:6180): (inositol 1,4,5-trisphosphate receptor type 1) This gene encodes an intracellular receptor for inositol 1,4,5-trisphosphate. Upon stimulation by inositol 1,4,5-trisphosphate, this receptor mediates calcium release from the endoplasmic reticulum. Mutations in this gene cause spinocerebellar ataxia type 15, a disease associated with an heterogeneous group of cerebellar disorders. Multiple transcript variants have been identified for this gene. [provided by RefSeq, Nov 2009]

ITPR1 Gene-Disease associations (from GenCC):

aniridia-cerebellar ataxia-intellectual disability syndrome
Inheritance: AD, AR Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Ambry Genetics, G2P, Genomics England PanelApp, PanelApp Australia, Labcorp Genetics (formerly Invitae), Orphanet, ClinGen
spinocerebellar ataxia type 29
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), G2P, ClinGen, Orphanet
spinocerebellar ataxia type 15/16
Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae)

ITPR1 links:

ENSG00000235978 (HGNC:):

ENSG00000235978 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -17 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.68).

BP6

Variant 3-4782678-C-T is Benign according to our data. Variant chr3-4782678-C-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 447596.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-2.01 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.000315 (48/152256) while in subpopulation AFR AF = 0.00103 (43/41564). AF 95% confidence interval is 0.000789. There are 0 homozygotes in GnomAd4. There are 30 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ITPR1	NM_001378452.1 link	c.6447C>T	p.Asn2149Asn	synonymous_variant	Exon 50 of 62	ENST00000649015.2	NP_001365381.1
ITPR1	NM_001168272.2 link	c.6402C>T	p.Asn2134Asn	synonymous_variant	Exon 49 of 61		NP_001161744.1	Q14643-2
ITPR1	NM_001099952.4 link	c.6303C>T	p.Asn2101Asn	synonymous_variant	Exon 47 of 59		NP_001093422.2	Q14643-3B4DER3Q59H91
ITPR1	NM_002222.7 link	c.6258C>T	p.Asn2086Asn	synonymous_variant	Exon 46 of 58		NP_002213.5	Q14643-4B4DER3B4DGH1Q59H91

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
ITPR1	ENST00000649015.2 link	c.6447C>T	p.Asn2149Asn	synonymous_variant	Exon 50 of 62		NM_001378452.1	ENSP00000497605.1	Q14643-1
ITPR1	ENST00000354582.12 link	c.6423C>T	p.Asn2141Asn	synonymous_variant	Exon 50 of 62	5		ENSP00000346595.8	A0A3F2YNW8
ITPR1	ENST00000648266.1 link	c.6420C>T	p.Asn2140Asn	synonymous_variant	Exon 50 of 62			ENSP00000498014.1	A0A3B3IU04
ITPR1	ENST00000650294.1 link	c.6405C>T	p.Asn2135Asn	synonymous_variant	Exon 49 of 61			ENSP00000498056.1	A0A3B3ITU8
ITPR1	ENST00000443694.5 link	c.6402C>T	p.Asn2134Asn	synonymous_variant	Exon 49 of 61	1		ENSP00000401671.2	Q14643-2
ITPR1	ENST00000648309.1 link	c.6375C>T	p.Asn2125Asn	synonymous_variant	Exon 47 of 59			ENSP00000497026.1	Q14643-5
ITPR1	ENST00000357086.10 link	c.6303C>T	p.Asn2101Asn	synonymous_variant	Exon 47 of 59	1		ENSP00000349597.4	Q14643-3
ITPR1	ENST00000456211.8 link	c.6258C>T	p.Asn2086Asn	synonymous_variant	Exon 46 of 58	1		ENSP00000397885.2	Q14643-4
ITPR1	ENST00000648038.1 link	c.4209C>T	p.Asn1403Asn	synonymous_variant	Exon 30 of 42			ENSP00000497872.1	A0A3B3ITQ1
ITPR1	ENST00000648431.1 link	c.3747C>T	p.Asn1249Asn	synonymous_variant	Exon 28 of 39			ENSP00000498149.1	A0A3B3IU05
ITPR1	ENST00000648212.1 link	c.3354C>T	p.Asn1118Asn	synonymous_variant	Exon 26 of 39			ENSP00000498022.1	A0A3B3IU13

Frequencies

GnomAD3 genomes

AF:

0.000316

AC:

AN:

152138

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00104

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.0000294

Gnomad OTH

AF:

0.000479

GnomAD2 exomes

AF:

0.0000910

AC:

AN:

241770

AF XY:

0.0000914

show subpopulations

Gnomad AFR exome

AF:

0.000933

Gnomad AMR exome

AF:

0.000153

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000588

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000906

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000538

AC:

AN:

1450976

Hom.:

Cov.:

AF XY:

0.0000485

AC XY:

AN XY:

721506

show subpopulations

African (AFR)

AF:

0.00121

AC:

AN:

33028

American (AMR)

AF:

0.000160

AC:

AN:

43762

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25894

East Asian (EAS)

AF:

0.000103

AC:

AN:

38756

South Asian (SAS)

AF:

0.0000237

AC:

AN:

84426

European-Finnish (FIN)

AF:

0.0000188

AC:

AN:

53234

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5724

European-Non Finnish (NFE)

AF:

0.0000181

AC:

AN:

1106216

Other (OTH)

AF:

0.0000667

AC:

AN:

59936

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.480

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

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

AF:

0.000315

AC:

AN:

152256

Hom.:

Cov.:

AF XY:

0.000403

AC XY:

AN XY:

74436

show subpopulations

African (AFR)

AF:

0.00103

AC:

AN:

41564

American (AMR)

AF:

0.000131

AC:

AN:

15298

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5178

South Asian (SAS)

AF:

0.00

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10610

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

67998

Other (OTH)

AF:

0.000474

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.464

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.000231

Hom.:

Bravo

AF:

0.000382

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:1

Feb 16, 2017

Athena Diagnostics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

ITPR1-related disorder

Benign:1

Feb 21, 2019

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

not provided

Benign:1

Dec 16, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.68

CADD

Benign

1.1

(source)

DANN

Benign

0.41

PhyloP100

-2.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over