Variant chr8-74245157-T-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_020647.4(JPH1):c.1277A>G(p.Gln426Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000239 in 1,590,920 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000067 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000026 ( 0 hom. )

Consequence

JPH1
NM_020647.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.23

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 -4 ACMG points.

BS2

High AC in GnomAdExome4 at 37 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
JPH1	NM_020647.4 linkuse as main transcript	c.1277A>G	p.Gln426Arg	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.1277A>G	p.Gln426Arg	missense_variant	4/6	1	NM_020647.4	P1
JPH1	ENST00000519947.1 linkuse as main transcript	c.*672A>G		3_prime_UTR_variant, NMD_transcript_variant	4/5	1

Frequencies

GnomAD3 genomes

AF:

0.00000665

AC:

AN:

150314

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000662

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

GnomAD3 exomes

AF:

0.00000436

AC:

AN:

229188

Hom.:

AF XY:

0.00000805

AC XY:

AN XY:

124236

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:

0.00000937

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000257

AC:

AN:

1440606

Hom.:

Cov.:

AF XY:

0.0000237

AC XY:

AN XY:

715894

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:

0.00

Gnomad4 NFE exome

AF:

0.0000335

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000665

AC:

AN:

150314

Hom.:

Cov.:

AF XY:

0.0000136

AC XY:

AN XY:

73336

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000662

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:

0.00

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

May 16, 2024

The c.1277A>G (p.Q426R) 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 1277, causing the glutamine (Q) at amino acid position 426 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

0.12

BayesDel_addAF

Uncertain

0.12

BayesDel_noAF

Uncertain

-0.060

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.061

Eigen

Uncertain

0.46

Eigen_PC

Uncertain

0.47

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Benign

0.70

M_CAP

Benign

0.024

MetaRNN

Uncertain

0.68

MetaSVM

Benign

-0.84

MutationAssessor

Benign

1.1

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.62

PROVEAN

Benign

-0.74

REVEL

Benign

0.18

Sift

Benign

0.61

Sift4G

Benign

0.71

Polyphen

0.99

Vest4

0.70

MutPred

0.25

Loss of helix (P = 0.0558);

MVP

0.70

MPC

0.13

ClinPred

0.47

GERP RS

5.1

Varity_R

0.25

gMVP

0.55

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