rs200665694

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 0P and 3B. BP4_ModerateBP6

The NM_000069.3(CACNA1S):​c.743C>T​(p.Thr248Met) variant causes a missense change. The variant allele was found at a frequency of 0.000162 in 1,614,174 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. T248T) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00020 ( 0 hom., cov: 32)
Exomes 𝑓: 0.00016 ( 1 hom. )

Consequence

CACNA1S
NM_000069.3 missense

Scores

1
10
7

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:5B:2

Conservation

PhyloP100: 3.98

Publications

2 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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -3 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.2200591).
BP6
Variant 1-201089415-G-A is Benign according to our data. Variant chr1-201089415-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 294774.

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
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
CACNA1S
NM_000069.3
MANE Select
c.743C>Tp.Thr248Met
missense
Exon 6 of 44NP_000060.2

Ensembl Transcripts

Selected
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
CACNA1S
ENST00000362061.4
TSL:1 MANE Select
c.743C>Tp.Thr248Met
missense
Exon 6 of 44ENSP00000355192.3
CACNA1S
ENST00000367338.7
TSL:5
c.743C>Tp.Thr248Met
missense
Exon 6 of 43ENSP00000356307.3
CACNA1S
ENST00000681874.1
c.743C>Tp.Thr248Met
missense
Exon 6 of 43ENSP00000505162.1

Frequencies

GnomAD3 genomes
AF:
0.000204
AC:
31
AN:
152250
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.000169
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000131
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.000193
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.000376
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000250
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.000247
AC:
62
AN:
250752
AF XY:
0.000287
show subpopulations
Gnomad AFR exome
AF:
0.000123
Gnomad AMR exome
AF:
0.0000579
Gnomad ASJ exome
AF:
0.000199
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.000370
Gnomad NFE exome
AF:
0.000389
Gnomad OTH exome
AF:
0.000326
GnomAD4 exome
AF:
0.000158
AC:
231
AN:
1461806
Hom.:
1
Cov.:
33
AF XY:
0.000171
AC XY:
124
AN XY:
727202
show subpopulations
African (AFR)
AF:
0.000119
AC:
4
AN:
33480
American (AMR)
AF:
0.0000671
AC:
3
AN:
44724
Ashkenazi Jewish (ASJ)
AF:
0.000115
AC:
3
AN:
26132
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39700
South Asian (SAS)
AF:
0.0000464
AC:
4
AN:
86256
European-Finnish (FIN)
AF:
0.000319
AC:
17
AN:
53360
Middle Eastern (MID)
AF:
0.000174
AC:
1
AN:
5760
European-Non Finnish (NFE)
AF:
0.000169
AC:
188
AN:
1112002
Other (OTH)
AF:
0.000182
AC:
11
AN:
60392
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.477
Heterozygous variant carriers
0
15
31
46
62
77
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
10
20
30
40
50
<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:
0.000203
AC:
31
AN:
152368
Hom.:
0
Cov.:
32
AF XY:
0.000215
AC XY:
16
AN XY:
74518
show subpopulations
African (AFR)
AF:
0.000168
AC:
7
AN:
41590
American (AMR)
AF:
0.000131
AC:
2
AN:
15314
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3472
East Asian (EAS)
AF:
0.000193
AC:
1
AN:
5180
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4830
European-Finnish (FIN)
AF:
0.000376
AC:
4
AN:
10630
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.000250
AC:
17
AN:
68032
Other (OTH)
AF:
0.00
AC:
0
AN:
2114
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.510
Heterozygous variant carriers
0
2
4
5
7
9
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<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:
0.000500
Hom.:
0
Bravo
AF:
0.000136
ExAC
AF:
0.000272
AC:
33
EpiCase
AF:
0.000491
EpiControl
AF:
0.000356

ClinVar

ClinVar submissions as Germline

Significance:Conflicting classifications of pathogenicity
Revision:criteria provided, conflicting classifications
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
4
-
not provided (4)
-
1
1
Hypokalemic periodic paralysis, type 1 (2)
-
-
1
Malignant hyperthermia, susceptibility to, 5;C3714580:Hypokalemic periodic paralysis, type 1 (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.11
BayesDel_addAF
Benign
-0.15
T
BayesDel_noAF
Benign
-0.13
CADD
Benign
22
DANN
Uncertain
1.0
DEOGEN2
Uncertain
0.65
D
Eigen
Benign
0.056
Eigen_PC
Benign
-0.035
FATHMM_MKL
Uncertain
0.82
D
LIST_S2
Uncertain
0.95
D
M_CAP
Uncertain
0.20
D
MetaRNN
Benign
0.22
T
MetaSVM
Pathogenic
0.86
D
MutationAssessor
Benign
1.2
L
PhyloP100
4.0
PrimateAI
Uncertain
0.54
T
PROVEAN
Uncertain
-3.1
D
REVEL
Uncertain
0.35
Sift
Uncertain
0.0080
D
Sift4G
Uncertain
0.014
D
Polyphen
0.96
D
Vest4
0.28
MVP
0.94
MPC
0.14
ClinPred
0.31
T
GERP RS
3.9
Varity_R
0.11
gMVP
0.74
Mutation Taster
=88/12
polymorphism

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

Publications

Other links and lift over

dbSNP: rs200665694; hg19: chr1-201058543; COSMIC: COSV100755440; API