rs79720149

Variant names:

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_001378452.1(ITPR1):c.7509T>C(p.Asp2503Asp) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000345 in 1,613,998 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0018 ( 1 hom., cov: 32)

Exomes 𝑓: 0.00020 ( 2 hom. )

Consequence

ITPR1
NM_001378452.1 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5

Conservation

PhyloP100: 0.129

Publications

1 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 -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.74).

BP6

Variant 3-4813182-T-C is Benign according to our data. Variant chr3-4813182-T-C is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 345782.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=0.129 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00178 (271/152308) while in subpopulation AFR AF = 0.00626 (260/41564). AF 95% confidence interval is 0.00563. There are 1 homozygotes in GnomAd4. There are 122 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 2 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ITPR1	NM_001378452.1 link	c.7509T>C	p.Asp2503Asp	synonymous_variant	Exon 57 of 62	ENST00000649015.2	NP_001365381.1
ITPR1	NM_001168272.2 link	c.7464T>C	p.Asp2488Asp	synonymous_variant	Exon 56 of 61		NP_001161744.1	Q14643-2
ITPR1	NM_001099952.4 link	c.7365T>C	p.Asp2455Asp	synonymous_variant	Exon 54 of 59		NP_001093422.2	Q14643-3B4DER3Q59H91
ITPR1	NM_002222.7 link	c.7320T>C	p.Asp2440Asp	synonymous_variant	Exon 53 of 58		NP_002213.5	Q14643-4B4DER3B4DGH1Q59H91

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
ITPR1	ENST00000649015.2 link	c.7509T>C	p.Asp2503Asp	synonymous_variant	Exon 57 of 62		NM_001378452.1	ENSP00000497605.1	Q14643-1
ITPR1	ENST00000354582.12 link	c.7485T>C	p.Asp2495Asp	synonymous_variant	Exon 57 of 62	5		ENSP00000346595.8	A0A3F2YNW8
ITPR1	ENST00000648266.1 link	c.7482T>C	p.Asp2494Asp	synonymous_variant	Exon 57 of 62			ENSP00000498014.1	A0A3B3IU04
ITPR1	ENST00000650294.1 link	c.7467T>C	p.Asp2489Asp	synonymous_variant	Exon 56 of 61			ENSP00000498056.1	A0A3B3ITU8
ITPR1	ENST00000443694.5 link	c.7464T>C	p.Asp2488Asp	synonymous_variant	Exon 56 of 61	1		ENSP00000401671.2	Q14643-2
ITPR1	ENST00000648309.1 link	c.7437T>C	p.Asp2479Asp	synonymous_variant	Exon 54 of 59			ENSP00000497026.1	Q14643-5
ITPR1	ENST00000357086.10 link	c.7365T>C	p.Asp2455Asp	synonymous_variant	Exon 54 of 59	1		ENSP00000349597.4	Q14643-3
ITPR1	ENST00000456211.8 link	c.7320T>C	p.Asp2440Asp	synonymous_variant	Exon 53 of 58	1		ENSP00000397885.2	Q14643-4
ITPR1	ENST00000648038.1 link	c.5271T>C	p.Asp1757Asp	synonymous_variant	Exon 37 of 42			ENSP00000497872.1	A0A3B3ITQ1
ITPR1	ENST00000648431.1 link	c.4686T>C	p.Asp1562Asp	synonymous_variant	Exon 34 of 39			ENSP00000498149.1	A0A3B3IU05
ITPR1	ENST00000648212.1 link	c.4449T>C	p.Asp1483Asp	synonymous_variant	Exon 34 of 39			ENSP00000498022.1	A0A3B3IU13

Frequencies

GnomAD3 genomes

AF:

0.00178

AC:

271

AN:

152190

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00627

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000524

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.000505

AC:

126

AN:

249284

AF XY:

0.000429

show subpopulations

Gnomad AFR exome

AF:

0.00710

Gnomad AMR exome

AF:

0.000319

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000177

Gnomad OTH exome

AF:

0.000330

GnomAD4 exome

AF:

0.000196

AC:

286

AN:

1461690

Hom.:

Cov.:

AF XY:

0.000187

AC XY:

136

AN XY:

727124

show subpopulations

African (AFR)

AF:

0.00726

AC:

243

AN:

33480

American (AMR)

AF:

0.000291

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000348

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53402

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5760

European-Non Finnish (NFE)

AF:

0.0000117

AC:

AN:

1111860

Other (OTH)

AF:

0.000215

AC:

AN:

60370

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.466

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:

0.00178

AC:

271

AN:

152308

Hom.:

Cov.:

AF XY:

0.00164

AC XY:

122

AN XY:

74484

show subpopulations

African (AFR)

AF:

0.00626

AC:

260

AN:

41564

American (AMR)

AF:

0.000523

AC:

AN:

15294

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5194

South Asian (SAS)

AF:

0.000207

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68020

Other (OTH)

AF:

0.000473

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.499

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:

0.000957

Hom.:

Bravo

AF:

0.00225

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Jul 07, 2021

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Dec 15, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not specified

Benign:1

Dec 30, 2016

Athena Diagnostics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Gillespie syndrome;C1847725:Spinocerebellar ataxia type 15/16;C1861732:Spinocerebellar ataxia type 29

Benign:1

Jan 13, 2022

Fulgent Genetics, Fulgent Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Autosomal dominant cerebellar ataxia

Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.74

CADD

Benign

0.97

(source)

DANN

Benign

0.28

PhyloP100

0.13

Mutation Taster

=100/0

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

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over