rs745902196

Variant summary

Our verdict is Pathogenic. The variant received 11 ACMG points: 11P and 0B. PVS1PM2PP3

The NM_021098.3(CACNA1H):​c.4931C>A​(p.Ser1644*) variant causes a stop gained, splice region change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. S1644S) has been classified as Benign. Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: not found (cov: 33)
Exomes 𝑓: 0.0 ( 0 hom. )
Failed GnomAD Quality Control

Consequence

CACNA1H
NM_021098.3 stop_gained, splice_region

Scores

4
2
1
Splicing: ADA: 0.9677
1
1

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 4.12

Publications

2 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: Pathogenic. The variant received 11 ACMG points.

PVS1
Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
PM2
Very rare variant in population databases, with high coverage;
PP3
Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: dbscSNV1_ADA, max_spliceai. No scorers claiming Uncertain. Scorers claiming Benign: dbscSNV1_RF.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
CACNA1HNM_021098.3 linkc.4931C>A p.Ser1644* stop_gained, splice_region_variant Exon 28 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.4931C>A p.Ser1644* stop_gained, splice_region_variant Exon 28 of 35 1 NM_021098.3 ENSP00000334198.7 O95180-1
CACNA1HENST00000569107.6 linkc.4946C>A p.Ser1649* stop_gained, splice_region_variant Exon 27 of 34 1 ENSP00000454990.2 H3BNT0
CACNA1HENST00000711493.1 linkc.4949C>A p.Ser1650* stop_gained, splice_region_variant Exon 27 of 34 ENSP00000518778.1
CACNA1HENST00000565831.7 linkc.4913C>A p.Ser1638* stop_gained, splice_region_variant Exon 27 of 34 1 ENSP00000455840.1 O95180-2
CACNA1HENST00000711450.1 linkc.4946C>A p.Ser1649* stop_gained, splice_region_variant Exon 28 of 35 ENSP00000518762.1
CACNA1HENST00000564231.6 linkc.4931C>A p.Ser1644* stop_gained, splice_region_variant Exon 28 of 35 1 ENSP00000457555.2 H3BUA8
CACNA1HENST00000638323.1 linkc.4892C>A p.Ser1631* stop_gained, splice_region_variant Exon 28 of 35 5 ENSP00000492267.1 A0A1W2PR14
CACNA1HENST00000562079.6 linkc.4913C>A p.Ser1638* stop_gained, splice_region_variant Exon 27 of 34 1 ENSP00000454581.2 H3BMW6
CACNA1HENST00000711438.1 linkc.4874C>A p.Ser1625* stop_gained, splice_region_variant Exon 27 of 34 ENSP00000518754.1
CACNA1HENST00000711482.1 linkc.4931C>A p.Ser1644* stop_gained, splice_region_variant Exon 28 of 36 ENSP00000518771.1
CACNA1HENST00000711485.1 linkc.4913C>A p.Ser1638* stop_gained, splice_region_variant Exon 27 of 35 ENSP00000518774.1
CACNA1HENST00000711455.1 linkc.4931C>A p.Ser1644* stop_gained, splice_region_variant Exon 28 of 36 ENSP00000518768.1
CACNA1HENST00000711483.1 linkc.4931C>A p.Ser1644* stop_gained, splice_region_variant Exon 28 of 35 ENSP00000518772.1
CACNA1HENST00000711456.1 linkc.4931C>A p.Ser1644* stop_gained, splice_region_variant Exon 28 of 34 ENSP00000518769.1
CACNA1HENST00000621827.2 linkn.4931C>A splice_region_variant, non_coding_transcript_exon_variant Exon 28 of 37 6 ENSP00000518766.1
CACNA1HENST00000637236.3 linkn.*883C>A splice_region_variant, non_coding_transcript_exon_variant Exon 27 of 34 5 ENSP00000492650.2 A0A1W2PS38
CACNA1HENST00000639478.1 linkn.*12C>A splice_region_variant, non_coding_transcript_exon_variant Exon 28 of 35 5 ENSP00000491945.1 A0A1W2PQW2
CACNA1HENST00000640028.1 linkn.*2782C>A splice_region_variant, non_coding_transcript_exon_variant Exon 28 of 35 5 ENSP00000491488.1 A0A1W2PQ19
CACNA1HENST00000711442.1 linkn.*4375C>A splice_region_variant, non_coding_transcript_exon_variant Exon 26 of 34 ENSP00000518758.1
CACNA1HENST00000711448.1 linkn.4913C>A splice_region_variant, non_coding_transcript_exon_variant Exon 27 of 36 ENSP00000518760.1
CACNA1HENST00000711449.1 linkn.4913C>A splice_region_variant, non_coding_transcript_exon_variant Exon 27 of 35 ENSP00000518761.1
CACNA1HENST00000711451.1 linkn.5008C>A splice_region_variant, non_coding_transcript_exon_variant Exon 28 of 36 ENSP00000518763.1
CACNA1HENST00000711452.1 linkn.4931C>A splice_region_variant, non_coding_transcript_exon_variant Exon 28 of 36 ENSP00000518764.1
CACNA1HENST00000711453.1 linkn.4931C>A splice_region_variant, non_coding_transcript_exon_variant Exon 28 of 36 ENSP00000518765.1
CACNA1HENST00000711484.1 linkn.4913C>A splice_region_variant, non_coding_transcript_exon_variant Exon 27 of 35 ENSP00000518773.1
CACNA1HENST00000711486.1 linkn.4931C>A splice_region_variant, non_coding_transcript_exon_variant Exon 28 of 37 ENSP00000518775.1
CACNA1HENST00000711487.1 linkn.4931C>A splice_region_variant, non_coding_transcript_exon_variant Exon 28 of 36 ENSP00000518776.1
CACNA1HENST00000711488.1 linkn.4990C>A splice_region_variant, non_coding_transcript_exon_variant Exon 27 of 35 ENSP00000518777.1
CACNA1HENST00000637236.3 linkn.*883C>A 3_prime_UTR_variant Exon 27 of 34 5 ENSP00000492650.2 A0A1W2PS38
CACNA1HENST00000639478.1 linkn.*12C>A 3_prime_UTR_variant Exon 28 of 35 5 ENSP00000491945.1 A0A1W2PQW2
CACNA1HENST00000640028.1 linkn.*2782C>A 3_prime_UTR_variant Exon 28 of 35 5 ENSP00000491488.1 A0A1W2PQ19
CACNA1HENST00000711442.1 linkn.*4375C>A 3_prime_UTR_variant Exon 26 of 34 ENSP00000518758.1

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD4 exome
Data not reliable, filtered out with message: AC0;AS_VQSR
AF:
0.00
AC:
0
AN:
1450418
Hom.:
0
Cov.:
32
AF XY:
0.00
AC XY:
0
AN XY:
720462
African (AFR)
AF:
0.00
AC:
0
AN:
33258
American (AMR)
AF:
0.00
AC:
0
AN:
43324
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25842
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39316
South Asian (SAS)
AF:
0.00
AC:
0
AN:
84336
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
52300
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5748
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1106306
Other (OTH)
AF:
0.00
AC:
0
AN:
59988
GnomAD4 genome
Cov.:
33
Alfa
AF:
0.000150
Hom.:
0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
0.55
D
BayesDel_noAF
Pathogenic
0.56
CADD
Pathogenic
63
DANN
Uncertain
1.0
Eigen
Pathogenic
0.90
Eigen_PC
Pathogenic
0.71
FATHMM_MKL
Uncertain
0.86
D
PhyloP100
4.1
Vest4
0.77
GERP RS
4.3
Mutation Taster
=6/194
disease causing (fs/PTC)

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Pathogenic
0.97
dbscSNV1_RF
Benign
0.68
SpliceAI score (max)
0.97
Details are displayed if max score is > 0.2
DS_AG_spliceai
0.97
Position offset: 2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

Other links and lift over

dbSNP: rs745902196; hg19: chr16-1264973; API