Genetic Variant CASQ1:p.Asp279Glu (chr1-160198685-T-G) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BS2

The NM_001231.5(CASQ1):c.837T>G(p.Asp279Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000411 in 1,461,312 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. D279V) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

CASQ1
NM_001231.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.867

Publications

0 publications found

Variant links:

Genes affected

CASQ1 (HGNC:1512): (calsequestrin 1) This gene encodes the skeletal muscle specific member of the calsequestrin protein family. Calsequestrin functions as a luminal sarcoplasmic reticulum calcium sensor in both cardiac and skeletal muscle cells. This protein, also known as calmitine, functions as a calcium regulator in the mitochondria of skeletal muscle. This protein is absent in patients with Duchenne and Becker types of muscular dystrophy. [provided by RefSeq, Jun 2013]

CASQ1 Gene-Disease associations (from GenCC):

myopathy due to calsequestrin and SERCA1 protein overload
Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet
tubular aggregate myopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

CASQ1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BS2

High AC in GnomAdExome4 at 6 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001231.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CASQ1	NM_001231.5	MANE Select	c.837T>G	p.Asp279Glu	missense	Exon 8 of 11	NP_001222.3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
CASQ1	ENST00000368078.8	TSL:1 MANE Select	c.837T>G	p.Asp279Glu	missense	Exon 8 of 11	ENSP00000357057.3
CASQ1	ENST00000481081.1	TSL:2	n.722T>G		non_coding_transcript_exon	Exon 7 of 8
CASQ1	ENST00000467691.1	TSL:3	c.-1T>G		5_prime_UTR	Exon 2 of 5	ENSP00000418051.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000411

AC:

AN:

1461312

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727032

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33468

American (AMR)

AF:

0.00

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86248

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53416

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.00000540

AC:

AN:

1111494

Other (OTH)

AF:

0.00

AC:

AN:

60366

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

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

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Myopathy due to calsequestrin and SERCA1 protein overload

Uncertain:1

Mar 06, 2017

Mayo Clinic Laboratories, Mayo Clinic

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.66

BayesDel_addAF

Uncertain

0.018

BayesDel_noAF

Benign

-0.21

CADD

Benign

(source)

DANN

Benign

0.95

DEOGEN2

Benign

0.34

Eigen

Benign

-0.84

Eigen_PC

Benign

-1.0

FATHMM_MKL

Benign

0.21

LIST_S2

Uncertain

0.86

M_CAP

Uncertain

0.12

MetaRNN

Uncertain

0.68

MetaSVM

Benign

-0.62

MutationAssessor

Uncertain

2.5

PhyloP100

-0.87

PrimateAI

Uncertain

0.75

PROVEAN

Benign

-2.2

REVEL

Uncertain

0.51

Sift

Benign

0.29

Sift4G

Benign

0.14

Polyphen

0.86

Vest4

0.64

MutPred

0.63

Gain of helix (P = 0.0696)

MVP

0.36

MPC

0.15

ClinPred

0.91

GERP RS

-7.2

PromoterAI

0.00040

Neutral

(source)

Varity_R

0.52

gMVP

0.59

Mutation Taster

=70/30

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

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

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over