rs200691111

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_002223.4(ITPR2):​c.7964C>T​(p.Ser2655Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000146 in 1,610,270 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00021 ( 0 hom., cov: 32)
Exomes 𝑓: 0.00014 ( 0 hom. )

Consequence

ITPR2
NM_002223.4 missense

Scores

8
11

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.51

Publications

2 publications found
Variant links:
Genes affected
ITPR2 (HGNC:6181): (inositol 1,4,5-trisphosphate receptor type 2) The protein encoded by this gene belongs to the inositol 1,4,5-triphosphate receptor family, whose members are second messenger intracellular calcium release channels. These proteins mediate a rise in cytoplasmic calcium in response to receptor activated production of inositol triphosphate. Inositol triphosphate receptor-mediated signaling is involved in many processes including cell migration, cell division, smooth muscle contraction, and neuronal signaling. This protein is a type 2 receptor that consists of a cytoplasmic amino-terminus that binds inositol triphosphate, six membrane-spanning helices that contribute to the ion pore, and a short cytoplasmic carboxy-terminus. A mutation in this gene has been associated with anhidrosis, suggesting that intracellular calcium release mediated by this protein is required for eccrine sweat production. [provided by RefSeq, Apr 2015]
ITPR2 Gene-Disease associations (from GenCC):
  • isolated anhidrosis with normal sweat glands
    Inheritance: AR Classification: SUPPORTIVE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.053634644).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
ITPR2NM_002223.4 linkc.7964C>T p.Ser2655Leu missense_variant Exon 56 of 57 ENST00000381340.8 NP_002214.2 Q14571-1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
ITPR2ENST00000381340.8 linkc.7964C>T p.Ser2655Leu missense_variant Exon 56 of 57 1 NM_002223.4 ENSP00000370744.3 Q14571-1
ENSG00000255968ENST00000535324.1 linkn.52+21218G>A intron_variant Intron 1 of 5 3

Frequencies

GnomAD3 genomes
AF:
0.000210
AC:
32
AN:
152140
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000724
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00198
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000118
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.000285
AC:
70
AN:
245880
AF XY:
0.000337
show subpopulations
Gnomad AFR exome
AF:
0.000195
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.0000997
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00158
Gnomad NFE exome
AF:
0.000285
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.000139
AC:
203
AN:
1458012
Hom.:
0
Cov.:
31
AF XY:
0.000145
AC XY:
105
AN XY:
725108
show subpopulations
African (AFR)
AF:
0.0000599
AC:
2
AN:
33380
American (AMR)
AF:
0.00
AC:
0
AN:
44176
Ashkenazi Jewish (ASJ)
AF:
0.0000383
AC:
1
AN:
26102
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39486
South Asian (SAS)
AF:
0.00
AC:
0
AN:
85072
European-Finnish (FIN)
AF:
0.00157
AC:
84
AN:
53372
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5760
European-Non Finnish (NFE)
AF:
0.0000919
AC:
102
AN:
1110390
Other (OTH)
AF:
0.000232
AC:
14
AN:
60274
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.464
Heterozygous variant carriers
0
10
20
31
41
51
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<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:
0.000210
AC:
32
AN:
152258
Hom.:
0
Cov.:
32
AF XY:
0.000309
AC XY:
23
AN XY:
74426
show subpopulations
African (AFR)
AF:
0.0000722
AC:
3
AN:
41542
American (AMR)
AF:
0.00
AC:
0
AN:
15286
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5184
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4820
European-Finnish (FIN)
AF:
0.00198
AC:
21
AN:
10608
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.000118
AC:
8
AN:
68030
Other (OTH)
AF:
0.00
AC:
0
AN:
2112
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.503
Heterozygous variant carriers
0
2
4
5
7
9
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<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:
0.000145
Hom.:
0
Bravo
AF:
0.0000756
ExAC
AF:
0.000273
AC:
33

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not specified Uncertain:1
Nov 09, 2021
Ambry Genetics
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

The c.7964C>T (p.S2655L) alteration is located in exon 56 (coding exon 56) of the ITPR2 gene. This alteration results from a C to T substitution at nucleotide position 7964, causing the serine (S) at amino acid position 2655 to be replaced by a leucine (L). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.082
BayesDel_addAF
Benign
-0.32
T
BayesDel_noAF
Benign
-0.40
CADD
Uncertain
23
DANN
Uncertain
1.0
DEOGEN2
Uncertain
0.64
D
Eigen
Benign
-0.0023
Eigen_PC
Benign
0.048
FATHMM_MKL
Uncertain
0.78
D
LIST_S2
Uncertain
0.96
D
M_CAP
Benign
0.0042
T
MetaRNN
Benign
0.054
T
MetaSVM
Benign
-0.94
T
MutationAssessor
Benign
1.4
L
PhyloP100
2.5
PrimateAI
Uncertain
0.57
T
PROVEAN
Uncertain
-4.1
D
REVEL
Benign
0.090
Sift
Uncertain
0.013
D
Sift4G
Uncertain
0.020
D
Polyphen
0.35
B
Vest4
0.40
MutPred
0.31
Loss of phosphorylation at S2655 (P = 0.0497);
MVP
0.49
MPC
0.74
ClinPred
0.11
T
GERP RS
5.6
Varity_R
0.25
gMVP
0.25
Mutation Taster
=82/18
polymorphism

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

Other links and lift over

dbSNP: rs200691111; hg19: chr12-26493155; COSMIC: COSV104430481; COSMIC: COSV104430481; API