rs779547523

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PVS1_ModeratePM2

The NM_021098.3(CACNA1H):​c.6470C>A​(p.Ser2157*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000729 in 1,372,012 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. S2157S) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 7.3e-7 ( 0 hom. )

Consequence

CACNA1H
NM_021098.3 stop_gained

Scores

2
5

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.645

Publications

0 publications found
Variant links:
Genes affected
CACNA1H (HGNC:1395): (calcium voltage-gated channel subunit alpha1 H) This gene encodes a T-type member of the alpha-1 subunit family, a protein in the voltage-dependent calcium channel complex. Calcium channels mediate the influx of calcium ions into the cell upon membrane polarization and consist of a complex of alpha-1, alpha-2/delta, beta, and gamma subunits in a 1:1:1:1 ratio. The alpha-1 subunit has 24 transmembrane segments and forms the pore through which ions pass into the cell. There are multiple isoforms of each of the proteins in the complex, either encoded by different genes or the result of alternative splicing of transcripts. Alternate transcriptional splice variants, encoding different isoforms, have been characterized for the gene described here. Studies suggest certain mutations in this gene lead to childhood absence epilepsy (CAE). [provided by RefSeq, Jul 2008]
CACNA1H Gene-Disease associations (from GenCC):
  • hyperaldosteronism, familial, type IV
    Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
  • childhood absence epilepsy
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • epilepsy, childhood absence, susceptibility to, 6
    Inheritance: AD Classification: LIMITED Submitted by: G2P, Labcorp Genetics (formerly Invitae)

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PVS1
Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. Fraction of 0.0838 CDS is truncated, and there are 1 pathogenic variants in the truncated region.
PM2
Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
CACNA1HNM_021098.3 linkc.6470C>A p.Ser2157* stop_gained Exon 35 of 35 ENST00000348261.11 NP_066921.2

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
CACNA1HENST00000348261.11 linkc.6470C>A p.Ser2157* stop_gained Exon 35 of 35 1 NM_021098.3 ENSP00000334198.7
CACNA1HENST00000569107.6 linkc.6485C>A p.Ser2162* stop_gained Exon 34 of 34 1 ENSP00000454990.2
CACNA1HENST00000711493.1 linkc.6455C>A p.Ser2152* stop_gained Exon 34 of 34 ENSP00000518778.1
CACNA1HENST00000565831.7 linkc.6452C>A p.Ser2151* stop_gained Exon 34 of 34 1 ENSP00000455840.1
CACNA1HENST00000711450.1 linkc.6452C>A p.Ser2151* stop_gained Exon 35 of 35 ENSP00000518762.1
CACNA1HENST00000564231.6 linkc.6437C>A p.Ser2146* stop_gained Exon 35 of 35 1 ENSP00000457555.2
CACNA1HENST00000638323.1 linkc.6431C>A p.Ser2144* stop_gained Exon 35 of 35 5 ENSP00000492267.1
CACNA1HENST00000562079.6 linkc.6419C>A p.Ser2140* stop_gained Exon 34 of 34 1 ENSP00000454581.2
CACNA1HENST00000711438.1 linkc.6413C>A p.Ser2138* stop_gained Exon 34 of 34 ENSP00000518754.1
CACNA1HENST00000711482.1 linkc.6363C>A p.Leu2121Leu synonymous_variant Exon 36 of 36 ENSP00000518771.1
CACNA1HENST00000711485.1 linkc.6312C>A p.Leu2104Leu synonymous_variant Exon 35 of 35 ENSP00000518774.1
CACNA1HENST00000711455.1 linkc.6285C>A p.Leu2095Leu synonymous_variant Exon 36 of 36 ENSP00000518768.1
CACNA1HENST00000637236.3 linkn.*2389C>A non_coding_transcript_exon_variant Exon 34 of 34 5 ENSP00000492650.2
CACNA1HENST00000639478.1 linkn.*1518C>A non_coding_transcript_exon_variant Exon 35 of 35 5 ENSP00000491945.1
CACNA1HENST00000640028.1 linkn.*4288C>A non_coding_transcript_exon_variant Exon 35 of 35 5 ENSP00000491488.1
CACNA1HENST00000711442.1 linkn.*5914C>A non_coding_transcript_exon_variant Exon 33 of 34 ENSP00000518758.1
CACNA1HENST00000711448.1 linkn.*1411C>A non_coding_transcript_exon_variant Exon 36 of 36 ENSP00000518760.1
CACNA1HENST00000711449.1 linkn.*1329C>A non_coding_transcript_exon_variant Exon 35 of 35 ENSP00000518761.1
CACNA1HENST00000711451.1 linkn.*2049C>A non_coding_transcript_exon_variant Exon 36 of 36 ENSP00000518763.1
CACNA1HENST00000711452.1 linkn.*1137C>A non_coding_transcript_exon_variant Exon 36 of 36 ENSP00000518764.1
CACNA1HENST00000711453.1 linkn.*1104C>A non_coding_transcript_exon_variant Exon 36 of 36 ENSP00000518765.1
CACNA1HENST00000711484.1 linkn.*384C>A non_coding_transcript_exon_variant Exon 34 of 35 ENSP00000518773.1
CACNA1HENST00000711486.1 linkn.6470C>A non_coding_transcript_exon_variant Exon 35 of 37 ENSP00000518775.1
CACNA1HENST00000711487.1 linkn.6437C>A non_coding_transcript_exon_variant Exon 35 of 36 ENSP00000518776.1
CACNA1HENST00000711488.1 linkn.*1586C>A non_coding_transcript_exon_variant Exon 35 of 35 ENSP00000518777.1
CACNA1HENST00000711483.1 linkc.*384C>A 3_prime_UTR_variant Exon 35 of 35 ENSP00000518772.1
CACNA1HENST00000711456.1 linkc.*384C>A 3_prime_UTR_variant Exon 34 of 34 ENSP00000518769.1
CACNA1HENST00000637236.3 linkn.*2389C>A 3_prime_UTR_variant Exon 34 of 34 5 ENSP00000492650.2
CACNA1HENST00000639478.1 linkn.*1518C>A 3_prime_UTR_variant Exon 35 of 35 5 ENSP00000491945.1
CACNA1HENST00000640028.1 linkn.*4288C>A 3_prime_UTR_variant Exon 35 of 35 5 ENSP00000491488.1
CACNA1HENST00000711442.1 linkn.*5914C>A 3_prime_UTR_variant Exon 33 of 34 ENSP00000518758.1
CACNA1HENST00000711448.1 linkn.*1411C>A 3_prime_UTR_variant Exon 36 of 36 ENSP00000518760.1
CACNA1HENST00000711449.1 linkn.*1329C>A 3_prime_UTR_variant Exon 35 of 35 ENSP00000518761.1
CACNA1HENST00000711451.1 linkn.*2049C>A 3_prime_UTR_variant Exon 36 of 36 ENSP00000518763.1
CACNA1HENST00000711452.1 linkn.*1137C>A 3_prime_UTR_variant Exon 36 of 36 ENSP00000518764.1
CACNA1HENST00000711453.1 linkn.*1104C>A 3_prime_UTR_variant Exon 36 of 36 ENSP00000518765.1
CACNA1HENST00000711484.1 linkn.*384C>A 3_prime_UTR_variant Exon 34 of 35 ENSP00000518773.1
CACNA1HENST00000711488.1 linkn.*1586C>A 3_prime_UTR_variant Exon 35 of 35 ENSP00000518777.1
CACNA1HENST00000621827.2 linkn.6121+349C>A intron_variant Intron 35 of 36 6 ENSP00000518766.1

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
AF:
7.29e-7
AC:
1
AN:
1372012
Hom.:
0
Cov.:
35
AF XY:
0.00
AC XY:
0
AN XY:
676764
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
29152
American (AMR)
AF:
0.00
AC:
0
AN:
29598
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
20296
East Asian (EAS)
AF:
0.00
AC:
0
AN:
37594
South Asian (SAS)
AF:
0.00
AC:
0
AN:
72192
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
44674
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5340
European-Non Finnish (NFE)
AF:
9.29e-7
AC:
1
AN:
1076832
Other (OTH)
AF:
0.00
AC:
0
AN:
56334
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.525
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome 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
GnomAD4 genome
Cov.:
32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
0.39
D
BayesDel_noAF
Pathogenic
0.32
CADD
Pathogenic
34
DANN
Benign
0.87
Eigen
Benign
-0.44
Eigen_PC
Benign
-0.82
FATHMM_MKL
Benign
0.41
N
PhyloP100
0.65
Vest4
0.43
GERP RS
-2.8
Mutation Taster
=39/161
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

Publications

Other links and lift over

dbSNP: rs779547523; hg19: chr16-1270402; API