rs140742077

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_000069.3(CACNA1S):c.4668+19T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00102 in 1,614,152 control chromosomes in the GnomAD database, including 18 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0054 ( 7 hom., cov: 33)

Exomes 𝑓: 0.00057 ( 11 hom. )

Consequence

CACNA1S
NM_000069.3 intron

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:7

Conservation

PhyloP100: -0.529

Publications

0 publications found

Variant links:

Genes affected

CACNA1S (HGNC:1397): (calcium voltage-gated channel subunit alpha1 S) This gene encodes one of the five subunits of the slowly inactivating L-type voltage-dependent calcium channel in skeletal muscle cells. Mutations in this gene have been associated with hypokalemic periodic paralysis, thyrotoxic periodic paralysis and malignant hyperthermia susceptibility. [provided by RefSeq, Jul 2008]

CACNA1S Gene-Disease associations (from GenCC):

congenital myopathy 18
Inheritance: AD, AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
hypokalemic periodic paralysis, type 1
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Ambry Genetics
malignant hyperthermia, susceptibility to, 5
Inheritance: AD Classification: STRONG, MODERATE Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), Ambry Genetics
congenital myopathy
Inheritance: SD, AR, AD Classification: STRONG Submitted by: Illumina, Genomics England PanelApp
hypokalemic periodic paralysis
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

CACNA1S links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.87).

BP6

Variant 1-201047096-A-G is Benign according to our data. Variant chr1-201047096-A-G is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 254839.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00538 (819/152296) while in subpopulation AFR AF = 0.0186 (774/41558). AF 95% confidence interval is 0.0175. There are 7 homozygotes in GnomAd4. There are 378 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 7 AD,AR,SD gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000069.3. 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
	CACNA1S	NM_000069.3	MANE Select	c.4668+19T>C		intron	N/A	NP_000060.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein
CACNA1S	ENST00000362061.4	TSL:1 MANE Select	c.4668+19T>C	intron	N/A	ENSP00000355192.3
CACNA1S	ENST00000367338.7	TSL:5	c.4611+19T>C	intron	N/A	ENSP00000356307.3
CACNA1S	ENST00000681874.1		c.4608+19T>C	intron	N/A	ENSP00000505162.1

Frequencies

GnomAD3 genomes

AF:

0.00534

AC:

812

AN:

152178

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0185

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00222

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:

0.0000147

Gnomad OTH

AF:

0.00478

GnomAD2 exomes

AF:

0.00142

AC:

357

AN:

251488

AF XY:

0.00107

show subpopulations

Gnomad AFR exome

AF:

0.0195

Gnomad AMR exome

AF:

0.000838

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000791

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.000571

AC:

835

AN:

1461856

Hom.:

Cov.:

AF XY:

0.000476

AC XY:

346

AN XY:

727230

show subpopulations

African (AFR)

AF:

0.0204

AC:

683

AN:

33480

American (AMR)

AF:

0.00103

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.0000232

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53406

Middle Eastern (MID)

AF:

0.000867

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.0000198

AC:

AN:

1111996

Other (OTH)

AF:

0.00127

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.478

Heterozygous variant carriers

143

190

238

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

120

<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:

0.00538

AC:

819

AN:

152296

Hom.:

Cov.:

AF XY:

0.00508

AC XY:

378

AN XY:

74474

show subpopulations

African (AFR)

AF:

0.0186

AC:

774

AN:

41558

American (AMR)

AF:

0.00222

AC:

AN:

15304

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5178

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10618

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68022

Other (OTH)

AF:

0.00473

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.502

Heterozygous variant carriers

115

154

192

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

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:

0.00467

Hom.:

Bravo

AF:

0.00631

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:2

May 15, 2017

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease.

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Hypokalemic periodic paralysis, type 1

Benign:1

Apr 11, 2023

Genome-Nilou Lab

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Congenital myopathy 18

Benign:1

Apr 11, 2023

Genome-Nilou Lab

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Thyrotoxic periodic paralysis, susceptibility to, 1

Benign:1

Apr 11, 2023

Genome-Nilou Lab

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Malignant hyperthermia, susceptibility to, 5;C3714580:Hypokalemic periodic paralysis, type 1

Benign:1

Feb 04, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Malignant hyperthermia, susceptibility to, 5

Benign:1

Apr 11, 2023

Genome-Nilou Lab

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.87

CADD

Benign

2.6

(source)

DANN

Benign

0.55

PhyloP100

-0.53

Mutation Taster

=100/0

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.070

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

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over