rs759233103

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_021098.3(CACNA1H):​c.4244G>A​(p.Gly1415Asp) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,574 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 13/22 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. G1415G) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 35)
Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

CACNA1H
NM_021098.3 missense

Scores

17
1
1

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.77

Publications

1 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.

PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.927

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
CACNA1HNM_021098.3 linkc.4244G>A p.Gly1415Asp missense_variant Exon 22 of 35 ENST00000348261.11 NP_066921.2 O95180-1B3KQH9

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
CACNA1HENST00000348261.11 linkc.4244G>A p.Gly1415Asp missense_variant Exon 22 of 35 1 NM_021098.3 ENSP00000334198.7 O95180-1
CACNA1HENST00000569107.6 linkc.4244G>A p.Gly1415Asp missense_variant Exon 22 of 34 1 ENSP00000454990.2 H3BNT0
CACNA1HENST00000711493.1 linkc.4244G>A p.Gly1415Asp missense_variant Exon 22 of 34 ENSP00000518778.1
CACNA1HENST00000565831.7 linkc.4244G>A p.Gly1415Asp missense_variant Exon 22 of 34 1 ENSP00000455840.1 O95180-2
CACNA1HENST00000711450.1 linkc.4244G>A p.Gly1415Asp missense_variant Exon 22 of 35 ENSP00000518762.1
CACNA1HENST00000564231.6 linkc.4244G>A p.Gly1415Asp missense_variant Exon 22 of 35 1 ENSP00000457555.2 H3BUA8
CACNA1HENST00000638323.1 linkc.4205G>A p.Gly1402Asp missense_variant Exon 22 of 35 5 ENSP00000492267.1 A0A1W2PR14
CACNA1HENST00000562079.6 linkc.4244G>A p.Gly1415Asp missense_variant Exon 22 of 34 1 ENSP00000454581.2 H3BMW6
CACNA1HENST00000711438.1 linkc.4205G>A p.Gly1402Asp missense_variant Exon 22 of 34 ENSP00000518754.1
CACNA1HENST00000711482.1 linkc.4244G>A p.Gly1415Asp missense_variant Exon 22 of 36 ENSP00000518771.1
CACNA1HENST00000711485.1 linkc.4244G>A p.Gly1415Asp missense_variant Exon 22 of 35 ENSP00000518774.1
CACNA1HENST00000711455.1 linkc.4244G>A p.Gly1415Asp missense_variant Exon 22 of 36 ENSP00000518768.1
CACNA1HENST00000711483.1 linkc.4244G>A p.Gly1415Asp missense_variant Exon 22 of 35 ENSP00000518772.1
CACNA1HENST00000711456.1 linkc.4244G>A p.Gly1415Asp missense_variant Exon 22 of 34 ENSP00000518769.1
CACNA1HENST00000621827.2 linkn.4244G>A non_coding_transcript_exon_variant Exon 22 of 37 6 ENSP00000518766.1
CACNA1HENST00000637236.3 linkn.*214G>A non_coding_transcript_exon_variant Exon 22 of 34 5 ENSP00000492650.2 A0A1W2PS38
CACNA1HENST00000639478.1 linkn.4244G>A non_coding_transcript_exon_variant Exon 22 of 35 5 ENSP00000491945.1 A0A1W2PQW2
CACNA1HENST00000640028.1 linkn.*2157G>A non_coding_transcript_exon_variant Exon 22 of 35 5 ENSP00000491488.1 A0A1W2PQ19
CACNA1HENST00000711442.1 linkn.*3691G>A non_coding_transcript_exon_variant Exon 21 of 34 ENSP00000518758.1
CACNA1HENST00000711448.1 linkn.4244G>A non_coding_transcript_exon_variant Exon 22 of 36 ENSP00000518760.1
CACNA1HENST00000711449.1 linkn.4244G>A non_coding_transcript_exon_variant Exon 22 of 35 ENSP00000518761.1
CACNA1HENST00000711451.1 linkn.4244G>A non_coding_transcript_exon_variant Exon 22 of 36 ENSP00000518763.1
CACNA1HENST00000711452.1 linkn.4244G>A non_coding_transcript_exon_variant Exon 22 of 36 ENSP00000518764.1
CACNA1HENST00000711453.1 linkn.4244G>A non_coding_transcript_exon_variant Exon 22 of 36 ENSP00000518765.1
CACNA1HENST00000711484.1 linkn.4244G>A non_coding_transcript_exon_variant Exon 22 of 35 ENSP00000518773.1
CACNA1HENST00000711486.1 linkn.4244G>A non_coding_transcript_exon_variant Exon 22 of 37 ENSP00000518775.1
CACNA1HENST00000711487.1 linkn.4244G>A non_coding_transcript_exon_variant Exon 22 of 36 ENSP00000518776.1
CACNA1HENST00000711488.1 linkn.4244G>A non_coding_transcript_exon_variant Exon 22 of 35 ENSP00000518777.1
CACNA1HENST00000637236.3 linkn.*214G>A 3_prime_UTR_variant Exon 22 of 34 5 ENSP00000492650.2 A0A1W2PS38
CACNA1HENST00000640028.1 linkn.*2157G>A 3_prime_UTR_variant Exon 22 of 35 5 ENSP00000491488.1 A0A1W2PQ19
CACNA1HENST00000711442.1 linkn.*3691G>A 3_prime_UTR_variant Exon 21 of 34 ENSP00000518758.1

Frequencies

GnomAD3 genomes
Cov.:
35
GnomAD2 exomes
AF:
0.00000403
AC:
1
AN:
248088
AF XY:
0.00000741
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000290
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
6.85e-7
AC:
1
AN:
1460574
Hom.:
0
Cov.:
50
AF XY:
0.00000138
AC XY:
1
AN XY:
726552
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33478
American (AMR)
AF:
0.0000224
AC:
1
AN:
44712
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26134
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39688
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86254
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
52460
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5764
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1111730
Other (OTH)
AF:
0.00
AC:
0
AN:
60354
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.:
35
Alfa
AF:
0.00
Hom.:
0
Bravo
AF:
0.00000378
ExAC
AF:
0.00000826
AC:
1

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Idiopathic generalized epilepsy;C4310756:Hyperaldosteronism, familial, type IV Uncertain:1
Aug 16, 2022
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This variant is present in population databases (rs759233103, gnomAD 0.003%). This sequence change replaces glycine, which is neutral and non-polar, with aspartic acid, which is acidic and polar, at codon 1415 of the CACNA1H protein (p.Gly1415Asp). This variant has not been reported in the literature in individuals affected with CACNA1H-related conditions. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt CACNA1H protein function. ClinVar contains an entry for this variant (Variation ID: 576471). -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.96
BayesDel_addAF
Pathogenic
0.37
D
BayesDel_noAF
Pathogenic
0.37
CADD
Pathogenic
28
DANN
Uncertain
1.0
DEOGEN2
Pathogenic
0.90
D;.;.;.
Eigen
Pathogenic
0.90
Eigen_PC
Pathogenic
0.80
FATHMM_MKL
Pathogenic
0.98
D
LIST_S2
Pathogenic
0.99
D;D;D;.
M_CAP
Pathogenic
0.51
D
MetaRNN
Pathogenic
0.93
D;D;D;D
MetaSVM
Pathogenic
1.1
D
MutationAssessor
Pathogenic
3.5
H;.;H;H
PhyloP100
9.8
PrimateAI
Pathogenic
0.93
D
PROVEAN
Pathogenic
-6.7
D;.;D;D
REVEL
Pathogenic
0.93
Sift
Pathogenic
0.0
D;.;D;D
Sift4G
Pathogenic
0.0
D;.;D;D
Polyphen
1.0
D;.;D;D
Vest4
0.68
MutPred
0.68
Loss of methylation at R1412 (P = 0.058);.;Loss of methylation at R1412 (P = 0.058);Loss of methylation at R1412 (P = 0.058);
MVP
0.96
ClinPred
1.0
D
GERP RS
4.3
Varity_R
0.95
gMVP
0.94
Mutation Taster
=19/81
disease causing

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

Other links and lift over

dbSNP: rs759233103; hg19: chr16-1261188; COSMIC: COSV62006152; COSMIC: COSV62006152; API