Variant 20-44116256-G-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_020433.5(JPH2):c.1419C>G(p.His473Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000103 in 1,362,710 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. H473Y) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.000010 ( 0 hom. )

Consequence

JPH2
NM_020433.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.134

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 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.30847058).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
JPH2	NM_020433.5 linkuse as main transcript	c.1419C>G	p.His473Gln	missense_variant	4/6	ENST00000372980.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
JPH2	ENST00000372980.4 linkuse as main transcript	c.1419C>G	p.His473Gln	missense_variant	4/6	5	NM_020433.5	P1	Q9BR39-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000897

AC:

AN:

111510

Hom.:

AF XY:

0.0000163

AC XY:

AN XY:

61488

show subpopulations

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000249

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000103

AC:

AN:

1362710

Hom.:

Cov.:

AF XY:

0.0000119

AC XY:

AN XY:

671552

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000273

Gnomad4 NFE exome

AF:

0.0000122

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.51

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.19

Eigen

Benign

-0.11

Eigen_PC

Benign

-0.25

FATHMM_MKL

Benign

0.56

LIST_S2

Benign

0.47

M_CAP

Pathogenic

0.32

MetaRNN

Benign

0.31

MetaSVM

Benign

-0.88

MutationAssessor

Benign

1.9

MutationTaster

Benign

0.86

PrimateAI

Pathogenic

0.92

PROVEAN

Benign

-1.9

REVEL

Benign

0.14

Sift

Benign

0.11

Sift4G

Benign

0.14

Polyphen

0.99

Vest4

0.21

MutPred

0.21

Loss of glycosylation at T477 (P = 0.1663);

MVP

0.82

ClinPred

0.53

GERP RS

-0.53

Varity_R

0.097

gMVP

0.56

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

LitVar

Other links and lift over