Genetic Variant NM_020433.5:c.1704C>T (chr20-44115971-G-A) – ACMG Classification: Benign (-17 pts)

Variant summary

Our verdict is Benign. The variant received -17 ACMG points: 0P and 17B. BP4_StrongBP6_Very_StrongBP7BS2

The NM_020433.5(JPH2):c.1704C>T(p.Ser568Ser) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000272 in 1,576,722 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00045 ( 1 hom., cov: 32)

Exomes 𝑓: 0.00025 ( 2 hom. )

Consequence

JPH2
NM_020433.5 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 2.20

Publications

1 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 Submitted by: Labcorp Genetics (formerly Invitae)
dilated cardiomyopathy
Inheritance: SD, AR, AD Classification: STRONG, MODERATE, LIMITED Submitted by: ClinGen
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

JPH2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -17 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.56).

BP6

Variant 20-44115971-G-A is Benign according to our data. Variant chr20-44115971-G-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 215527.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=2.2 with no splicing effect.

BS2

High Homozygotes in GnomAdExome4 at 2 SD,AD,Unknown,AR gene

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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	JPH2	NM_020433.5	MANE Select	c.1704C>T	p.Ser568Ser	synonymous	Exon 4 of 6	NP_065166.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
JPH2	ENST00000372980.4	TSL:5 MANE Select	c.1704C>T	p.Ser568Ser	synonymous	Exon 4 of 6	ENSP00000362071.3	Q9BR39-1
JPH2	ENST00000900331.1		c.1785C>T	p.Ser595Ser	synonymous	Exon 5 of 7	ENSP00000570390.1
JPH2	ENST00000950207.1		c.1767C>T	p.Ser589Ser	synonymous	Exon 5 of 7	ENSP00000620266.1

Frequencies

GnomAD3 genomes

AF:

0.000447

AC:

AN:

152160

Hom.:

Cov.:

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:

0.00546

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000118

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.000369

AC:

AN:

184092

AF XY:

0.000312

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000332

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00583

Gnomad NFE exome

AF:

0.000213

Gnomad OTH exome

AF:

0.000409

GnomAD4 exome

AF:

0.000253

AC:

361

AN:

1424454

Hom.:

Cov.:

AF XY:

0.000218

AC XY:

154

AN XY:

707056

show subpopulations

African (AFR)

AF:

0.0000607

AC:

AN:

32948

American (AMR)

AF:

0.0000242

AC:

AN:

41304

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25638

East Asian (EAS)

AF:

0.00

AC:

AN:

38696

South Asian (SAS)

AF:

0.00

AC:

AN:

83740

European-Finnish (FIN)

AF:

0.00460

AC:

167

AN:

36334

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5530

European-Non Finnish (NFE)

AF:

0.000160

AC:

176

AN:

1100886

Other (OTH)

AF:

0.000253

AC:

AN:

59378

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.509

Heterozygous variant carriers

118

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<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:

0.000447

AC:

AN:

152268

Hom.:

Cov.:

AF XY:

0.000631

AC XY:

AN XY:

74446

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41568

American (AMR)

AF:

0.00

AC:

AN:

15304

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5158

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00546

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.000118

AC:

AN:

68000

Other (OTH)

AF:

0.000473

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.502

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<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:

0.000318

Hom.:

Bravo

AF:

0.0000491

ClinVar

ClinVar submissions

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Cardiovascular phenotype (1)

Hypertrophic cardiomyopathy (1)

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.56

CADD

Benign

(source)

DANN

Benign

0.74

PhyloP100

2.2

Mutation Taster

=100/0

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over