Genetic Variant NM_001232.4:c.1147_1149dupGAT (chr1-115701291-T-TATC) – ACMG Classification: Likely_benign (-1 pts)

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 0P and 1B. BP3

The NM_001232.4(CASQ2):c.1147_1149dupGAT(p.Asp383dup) variant causes a conservative inframe insertion change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000521 in 1,594,326 control chromosomes in the GnomAD database, including 1 homozygotes. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000085 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000049 ( 1 hom. )

Consequence

CASQ2
NM_001232.4 conservative_inframe_insertion

Scores

Not classified

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:6B:1

Conservation

PhyloP100: -5.01

Publications

1 publications found

Variant links:

Genes affected

CASQ2 (HGNC:1513): (calsequestrin 2) The protein encoded by this gene specifies the cardiac muscle family member of the calsequestrin family. Calsequestrin is localized to the sarcoplasmic reticulum in cardiac and slow skeletal muscle cells. The protein is a calcium binding protein that stores calcium for muscle function. Mutations in this gene cause stress-induced polymorphic ventricular tachycardia, also referred to as catecholaminergic polymorphic ventricular tachycardia 2 (CPVT2), a disease characterized by bidirectional ventricular tachycardia that may lead to cardiac arrest. [provided by RefSeq, Jul 2008]

CASQ2 Gene-Disease associations (from GenCC):

catecholaminergic polymorphic ventricular tachycardia
Inheritance: AR, AD Classification: DEFINITIVE, MODERATE, SUPPORTIVE Submitted by: ClinGen, Orphanet
catecholaminergic polymorphic ventricular tachycardia 2
Inheritance: AR, AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics, Genomics England PanelApp
hypertrophic cardiomyopathy
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

CASQ2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -1 ACMG points.

BP3

Nonframeshift variant in repetitive region in NM_001232.4

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001232.4. 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
	CASQ2	NM_001232.4	MANE Select	c.1147_1149dupGAT	p.Asp383dup	conservative_inframe_insertion	Exon 11 of 11	NP_001223.2	O14958-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CASQ2	ENST00000261448.6	TSL:1 MANE Select	c.1147_1149dupGAT	p.Asp383dup	conservative_inframe_insertion	Exon 11 of 11	ENSP00000261448.5	O14958-1
CASQ2	ENST00000713711.1		c.1288_1290dupGAT	p.Asp430dup	conservative_inframe_insertion	Exon 12 of 12	ENSP00000519014.1	A0AAQ5BGS1
CASQ2	ENST00000874189.1		c.1072_1074dupGAT	p.Asp358dup	conservative_inframe_insertion	Exon 10 of 10	ENSP00000544248.1

Frequencies

GnomAD3 genomes

AF:

0.0000855

AC:

AN:

152086

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000656

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000882

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000560

AC:

AN:

250136

AF XY:

0.0000518

show subpopulations

Gnomad AFR exome

AF:

0.000124

Gnomad AMR exome

AF:

0.000232

Gnomad ASJ exome

AF:

0.0000994

Gnomad EAS exome

AF:

0.0000545

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000885

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000485

AC:

AN:

1442122

Hom.:

Cov.:

AF XY:

0.0000473

AC XY:

AN XY:

718686

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33086

American (AMR)

AF:

0.000179

AC:

AN:

44668

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26014

East Asian (EAS)

AF:

0.0000253

AC:

AN:

39596

South Asian (SAS)

AF:

0.0000467

AC:

AN:

85734

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53286

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5722

European-Non Finnish (NFE)

AF:

0.0000475

AC:

AN:

1094320

Other (OTH)

AF:

0.0000838

AC:

AN:

59696

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.505

Heterozygous variant carriers

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:

0.0000854

AC:

AN:

152204

Hom.:

Cov.:

AF XY:

0.0000806

AC XY:

AN XY:

74404

show subpopulations

African (AFR)

AF:

0.000120

AC:

AN:

41528

American (AMR)

AF:

0.0000655

AC:

AN:

15274

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.000193

AC:

AN:

5174

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10606

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000882

AC:

AN:

68010

Other (OTH)

AF:

0.00

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.490

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:

0.00

Hom.:

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (2)

Cardiomyopathy (1)

Cardiovascular phenotype (1)

Catecholaminergic polymorphic ventricular tachycardia 1 (1)

Catecholaminergic polymorphic ventricular tachycardia 1;C2677794:Catecholaminergic polymorphic ventricular tachycardia 2 (1)

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

PhyloP100

-5.0

Mutation Taster

=83/17

polymorphism

(source)

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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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