Variant chr8-74244884-T-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_020647.4(JPH1):c.1550A>G(p.Lys517Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000198 in 1,614,048 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000092 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000012 ( 0 hom. )

Consequence

JPH1
NM_020647.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.36

Variant links:

Genes affected

JPH1 (HGNC:14201): (junctophilin 1) 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. [provided by RefSeq, Jul 2008]

JPH1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.09043896).

BS2

High AC in GnomAd4 at 14 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
JPH1	NM_020647.4 linkuse as main transcript	c.1550A>G	p.Lys517Arg	missense_variant	4/6	ENST00000342232.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
JPH1	ENST00000342232.5 linkuse as main transcript	c.1550A>G	p.Lys517Arg	missense_variant	4/6	1	NM_020647.4	P1
JPH1	ENST00000519947.1 linkuse as main transcript	c.*945A>G		3_prime_UTR_variant, NMD_transcript_variant	4/5	1

Frequencies

GnomAD3 genomes

AF:

0.0000920

AC:

AN:

152176

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000266

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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:

0.000955

GnomAD3 exomes

AF:

0.0000239

AC:

AN:

251450

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135898

show subpopulations

Gnomad AFR exome

AF:

0.000369

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000123

AC:

AN:

1461872

Hom.:

Cov.:

AF XY:

0.0000138

AC XY:

AN XY:

727244

show subpopulations

Gnomad4 AFR exome

AF:

0.000478

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:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000920

AC:

AN:

152176

Hom.:

Cov.:

AF XY:

0.000108

AC XY:

AN XY:

74342

show subpopulations

Gnomad4 AFR

AF:

0.000266

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000955

Alfa

AF:

0.0000987

Hom.:

Bravo

AF:

0.0000831

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 07, 2023

The c.1550A>G (p.K517R) alteration is located in exon 4 (coding exon 4) of the JPH1 gene. This alteration results from a A to G substitution at nucleotide position 1550, causing the lysine (K) at amino acid position 517 to be replaced by an arginine (R). 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

0.070

BayesDel_addAF

Benign

-0.42

BayesDel_noAF

Benign

-0.46

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.071

Eigen

Benign

-0.34

Eigen_PC

Benign

-0.13

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.82

M_CAP

Benign

0.0090

MetaRNN

Benign

0.090

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.98

MutationTaster

Benign

1.0

PrimateAI

Benign

0.42

PROVEAN

Benign

-0.10

REVEL

Benign

0.045

Sift

Benign

0.27

Sift4G

Benign

0.75

Polyphen

0.022

Vest4

0.36

MVP

0.41

MPC

0.11

ClinPred

0.068

GERP RS

4.0

Varity_R

0.053

gMVP

0.22

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

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over