chr1-201074627-G-A

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS1

The NM_000069.3(CACNA1S):c.1949-7C>T variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000823 in 1,591,108 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 2/2 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00021 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000069 ( 0 hom. )

Consequence

CACNA1S
NM_000069.3 splice_region, intron

Scores

Splicing: ADA: 0.00009511

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:7

Conservation

PhyloP100: 0.449

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):

hypokalemic periodic paralysis, type 1
Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Ambry Genetics
malignant hyperthermia, susceptibility to, 5
Inheritance: AD Classification: STRONG, MODERATE Submitted by: ClinGen, Ambry Genetics, Labcorp Genetics (formerly Invitae)
congenital myopathy 18
Inheritance: AR, AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
congenital myopathy
Inheritance: SD, AD, AR 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 -9 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.73).

BP6

Variant 1-201074627-G-A is Benign according to our data. Variant chr1-201074627-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 294750.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00021 (32/152360) while in subpopulation AFR AF = 0.000673 (28/41586). AF 95% confidence interval is 0.000478. There are 0 homozygotes in GnomAd4. There are 14 alleles in the male GnomAd4 subpopulation. Median coverage is 34. This position passed quality control check.

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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CACNA1S	NM_000069.3	MANE Select	c.1949-7C>T		splice_region intron	N/A	NP_000060.2	Q13698

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
CACNA1S	ENST00000362061.4	TSL:1 MANE Select	c.1949-7C>T	splice_region intron	N/A	ENSP00000355192.3	Q13698
CACNA1S	ENST00000367338.7	TSL:5	c.1949-7C>T	splice_region intron	N/A	ENSP00000356307.3	B1ALM3
CACNA1S	ENST00000681874.1		c.1949-7C>T	splice_region intron	N/A	ENSP00000505162.1	A0A7P0T8M7

Frequencies

GnomAD3 genomes

AF:

0.000210

AC:

AN:

152242

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000675

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000854

AC:

AN:

245906

AF XY:

0.0000753

show subpopulations

Gnomad AFR exome

AF:

0.000769

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000813

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000688

AC:

AN:

1438748

Hom.:

Cov.:

AF XY:

0.0000656

AC XY:

AN XY:

716842

show subpopulations

African (AFR)

AF:

0.000544

AC:

AN:

33066

American (AMR)

AF:

0.00

AC:

AN:

44486

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25872

East Asian (EAS)

AF:

0.00

AC:

AN:

39560

South Asian (SAS)

AF:

0.0000117

AC:

AN:

85212

European-Finnish (FIN)

AF:

0.0000188

AC:

AN:

53208

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5732

European-Non Finnish (NFE)

AF:

0.0000678

AC:

AN:

1092014

Other (OTH)

AF:

0.0000839

AC:

AN:

59598

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.493

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:

0.000210

AC:

AN:

152360

Hom.:

Cov.:

AF XY:

0.000188

AC XY:

AN XY:

74510

show subpopulations

African (AFR)

AF:

0.000673

AC:

AN:

41586

American (AMR)

AF:

0.0000653

AC:

AN:

15308

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5184

South Asian (SAS)

AF:

0.000207

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68034

Other (OTH)

AF:

0.00

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.486

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:

0.000213

Hom.:

Bravo

AF:

0.000227

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

Hypokalemic periodic paralysis, type 1 (2)

CACNA1S-related disorder (1)

Congenital myopathy 18 (1)

Malignant hyperthermia, susceptibility to, 5 (1)

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

not provided (1)

Thyrotoxic periodic paralysis, susceptibility to, 1 (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.73

CADD

Benign

8.4

(source)

DANN

Benign

0.77

PhyloP100

0.45

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.000095

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