chr1-115701320-T-C

Variant names:

• chr1-115701320-T-C
• rs886045158
• NM_001232.4:c.1121A>G

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The NM_001232.4(CASQ2):​c.1121A>G​(p.Asp374Gly) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000106 in 1,607,550 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D374N) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.000053 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000062 (0 hom.)
• Consequence: CASQ2 NM_001232.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.53
• Publications: 0 publications found

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

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

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.1121A>G	p.Asp374Gly	missense	Exon 11 of 11	NP_001223.2	O14958-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CASQ2	ENST00000261448.6	TSL:1 MANE Select	c.1121A>G	p.Asp374Gly	missense	Exon 11 of 11	ENSP00000261448.5	O14958-1
	CASQ2	ENST00000713711.1		c.1262A>G	p.Asp421Gly	missense	Exon 12 of 12	ENSP00000519014.1	A0AAQ5BGS1
	CASQ2	ENST00000874189.1		c.1046A>G	p.Asp349Gly	missense	Exon 10 of 10	ENSP00000544248.1

Frequencies

GnomAD3 genomes AF: 0.0000526 AC: 8 AN: 152152 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000524

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

GnomAD2 exomes AF: 0.0000319 AC: 8 AN: 251152 AF XY: 0.0000147

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.000202

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 0.00000618 AC: 9 AN: 1455398 Hom.: 0 Cov.: 30 AF XY: 0.00000276 AC XY: 2 AN XY: 724550

African (AFR) AF: 0.00 AC: 0 AN: 33330

American (AMR) AF: 0.000201 AC: 9 AN: 44714

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26114

East Asian (EAS) AF: 0.00 AC: 0 AN: 39662

South Asian (SAS) AF: 0.00 AC: 0 AN: 86096

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53416

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5756

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1106140

Other (OTH) AF: 0.00 AC: 0 AN: 60170

GnomAD4 genome AF: 0.0000526 AC: 8 AN: 152152 Hom.: 0 Cov.: 32 AF XY: 0.0000807 AC XY: 6 AN XY: 74336

African (AFR) AF: 0.00 AC: 0 AN: 41426

American (AMR) AF: 0.000524 AC: 8 AN: 15270

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5198

South Asian (SAS) AF: 0.00 AC: 0 AN: 4824

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10620

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68028

Other (OTH) AF: 0.00 AC: 0 AN: 2090

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000756

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Catecholaminergic polymorphic ventricular tachycardia 1 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.17
BayesDel_addAF	Uncertain	0.034	T
BayesDel_noAF	Benign	-0.19
CADD	Pathogenic	26
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.65	D
Eigen	Pathogenic	0.81
Eigen_PC	Pathogenic	0.80
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Benign	0.74	T
M_CAP	Benign	0.015	T
MetaRNN	Uncertain	0.66	D
MetaSVM	Benign	-0.99	T
MutationAssessor	Uncertain	2.5	M
PhyloP100		7.5
PrimateAI	Uncertain	0.60	T
PROVEAN	Pathogenic	-4.5	D
REVEL	Uncertain	0.36
Sift	Benign	0.11	T
Sift4G	Pathogenic	0.0010	D
Polyphen		1.0	D
Vest4		0.46
MutPred		0.51		Loss of solvent accessibility (P = 0.1177)
MVP		0.67
MPC		0.056
ClinPred		0.59	D
GERP RS		6.2
Varity_R		0.54
gMVP		0.44
Mutation Taster		=16/84	disease causing

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

Other links and lift over

dbSNP: rs886045158; hg19: chr1-116243941;