rs1012335909

Variant summary

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

The NM_020433.5(JPH2):​c.439G>T​(p.Val147Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000188 in 1,592,752 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V147M) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

JPH2
NM_020433.5 missense

Scores

3
11
4

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.49

Publications

2 publications found
Variant links:
Genes affected
JPH2 (HGNC:14202): (junctophilin 2) Junctional complexes between the plasma membrane and endoplasmic/sarcoplasmic reticulum are a common feature of all excitable cell types and mediate cross talk between cell surface and intracellular ion channels. The protein encoded by this gene is a component of junctional complexes and is composed of a C-terminal hydrophobic segment spanning the endoplasmic/sarcoplasmic reticulum membrane and a remaining cytoplasmic domain that shows specific affinity for the plasma membrane. This gene is a member of the junctophilin gene family. Alternative splicing has been observed at this locus and two variants encoding distinct isoforms are described. [provided by RefSeq, Jul 2008]
JPH2 Gene-Disease associations (from GenCC):
  • hypertrophic cardiomyopathy 17
    Inheritance: AD Classification: STRONG, MODERATE Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae)
  • cardiomyopathy, dilated, 2E
    Inheritance: Unknown, AR Classification: STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
  • hypertrophic cardiomyopathy
    Inheritance: AD Classification: MODERATE Submitted by: ClinGen
  • dilated cardiomyopathy
    Inheritance: SD Classification: MODERATE Submitted by: ClinGen

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;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_020433.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
JPH2
NM_020433.5
MANE Select
c.439G>Tp.Val147Leu
missense
Exon 2 of 6NP_065166.2

Ensembl Transcripts

Selected
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
JPH2
ENST00000372980.4
TSL:5 MANE Select
c.439G>Tp.Val147Leu
missense
Exon 2 of 6ENSP00000362071.3

Frequencies

GnomAD3 genomes
AF:
0.00000657
AC:
1
AN:
152206
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000241
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:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.00
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.00
AC:
0
AN:
210400
AF XY:
0.00
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000139
AC:
2
AN:
1440546
Hom.:
0
Cov.:
32
AF XY:
0.00
AC XY:
0
AN XY:
714772
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33050
American (AMR)
AF:
0.00
AC:
0
AN:
42600
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25736
East Asian (EAS)
AF:
0.00
AC:
0
AN:
38646
South Asian (SAS)
AF:
0.00
AC:
0
AN:
82966
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
50192
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5522
European-Non Finnish (NFE)
AF:
0.00000181
AC:
2
AN:
1102308
Other (OTH)
AF:
0.00
AC:
0
AN:
59526
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.475
Heterozygous variant carriers
0
1
1
2
2
3
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:
0.00000657
AC:
1
AN:
152206
Hom.:
0
Cov.:
32
AF XY:
0.0000134
AC XY:
1
AN XY:
74364
show subpopulations
African (AFR)
AF:
0.0000241
AC:
1
AN:
41464
American (AMR)
AF:
0.00
AC:
0
AN:
15288
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3472
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5180
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4836
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10618
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
314
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
68028
Other (OTH)
AF:
0.00
AC:
0
AN:
2094
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.425
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
Alfa
AF:
0.00
Hom.:
0
Bravo
AF:
0.00000378

ClinVar

ClinVar submissions as Germline

Significance:Uncertain significance
Revision:criteria provided, single submitter
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
1
-
not provided (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.98
BayesDel_addAF
Uncertain
0.040
T
BayesDel_noAF
Benign
-0.18
CADD
Pathogenic
27
DANN
Uncertain
1.0
DEOGEN2
Benign
0.37
T
Eigen
Uncertain
0.40
Eigen_PC
Uncertain
0.37
FATHMM_MKL
Pathogenic
0.98
D
LIST_S2
Uncertain
0.94
D
M_CAP
Uncertain
0.16
D
MetaRNN
Uncertain
0.67
D
MetaSVM
Benign
-0.53
T
MutationAssessor
Uncertain
2.4
M
PhyloP100
7.5
PrimateAI
Pathogenic
0.90
D
PROVEAN
Uncertain
-2.4
N
REVEL
Uncertain
0.37
Sift
Uncertain
0.0050
D
Sift4G
Benign
0.080
T
Polyphen
0.96
D
Vest4
0.66
MutPred
0.54
Loss of sheet (P = 0.0817)
MVP
0.87
ClinPred
0.99
D
GERP RS
3.3
Varity_R
0.55
gMVP
0.47
Mutation Taster
=60/40
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: rs1012335909; hg19: chr20-42788988; API