rs746597383

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 3P and 4B. PM4PP3BS2

The NM_021098.3(CACNA1H):​c.3422_3442delGGCGCTCCAGCTGGAGCAGCC​(p.Arg1141_Ser1147del) variant causes a disruptive inframe deletion change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000815 in 1,545,100 control chromosomes in the GnomAD database, including 1 homozygotes. It is difficult to determine the true allele frequency of this variant because it is of type DEL_BIG, and the frequency of such variant types in population databases may be underestimated and unreliable. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 33)
Exomes 𝑓: 0.000077 ( 1 hom. )

Consequence

CACNA1H
NM_021098.3 disruptive_inframe_deletion

Scores

Not classified

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 9.53

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: Likely_benign. The variant received -1 ACMG points.

PM4
Nonframeshift variant in NON repetitive region in NM_021098.3.
PP3
No computational evidence supports a deleterious effect, but strongly conserved according to phyloP
BS2
High AC in GnomAd4 at 19 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
CACNA1HNM_021098.3 linkc.3422_3442delGGCGCTCCAGCTGGAGCAGCC p.Arg1141_Ser1147del disruptive_inframe_deletion Exon 17 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.3422_3442delGGCGCTCCAGCTGGAGCAGCC p.Arg1141_Ser1147del disruptive_inframe_deletion Exon 17 of 35 1 NM_021098.3 ENSP00000334198.7 O95180-1
CACNA1HENST00000569107.6 linkc.3422_3442delGGCGCTCCAGCTGGAGCAGCC p.Arg1141_Ser1147del disruptive_inframe_deletion Exon 17 of 34 1 ENSP00000454990.2 H3BNT0
CACNA1HENST00000711493.1 linkc.3422_3442delGGCGCTCCAGCTGGAGCAGCC p.Arg1141_Ser1147del disruptive_inframe_deletion Exon 17 of 34 ENSP00000518778.1
CACNA1HENST00000565831.7 linkc.3422_3442delGGCGCTCCAGCTGGAGCAGCC p.Arg1141_Ser1147del disruptive_inframe_deletion Exon 17 of 34 1 ENSP00000455840.1 O95180-2
CACNA1HENST00000711450.1 linkc.3422_3442delGGCGCTCCAGCTGGAGCAGCC p.Arg1141_Ser1147del disruptive_inframe_deletion Exon 17 of 35 ENSP00000518762.1
CACNA1HENST00000564231.6 linkc.3422_3442delGGCGCTCCAGCTGGAGCAGCC p.Arg1141_Ser1147del disruptive_inframe_deletion Exon 17 of 35 1 ENSP00000457555.2 H3BUA8
CACNA1HENST00000638323.1 linkc.3383_3403delGGCGCTCCAGCTGGAGCAGCC p.Arg1128_Ser1134del disruptive_inframe_deletion Exon 17 of 35 5 ENSP00000492267.1 A0A1W2PR14
CACNA1HENST00000562079.6 linkc.3422_3442delGGCGCTCCAGCTGGAGCAGCC p.Arg1141_Ser1147del disruptive_inframe_deletion Exon 17 of 34 1 ENSP00000454581.2 H3BMW6
CACNA1HENST00000711438.1 linkc.3383_3403delGGCGCTCCAGCTGGAGCAGCC p.Arg1128_Ser1134del disruptive_inframe_deletion Exon 17 of 34 ENSP00000518754.1
CACNA1HENST00000711482.1 linkc.3422_3442delGGCGCTCCAGCTGGAGCAGCC p.Arg1141_Ser1147del disruptive_inframe_deletion Exon 17 of 36 ENSP00000518771.1
CACNA1HENST00000711485.1 linkc.3422_3442delGGCGCTCCAGCTGGAGCAGCC p.Arg1141_Ser1147del disruptive_inframe_deletion Exon 17 of 35 ENSP00000518774.1
CACNA1HENST00000711455.1 linkc.3422_3442delGGCGCTCCAGCTGGAGCAGCC p.Arg1141_Ser1147del disruptive_inframe_deletion Exon 17 of 36 ENSP00000518768.1
CACNA1HENST00000711483.1 linkc.3422_3442delGGCGCTCCAGCTGGAGCAGCC p.Arg1141_Ser1147del disruptive_inframe_deletion Exon 17 of 35 ENSP00000518772.1
CACNA1HENST00000711456.1 linkc.3422_3442delGGCGCTCCAGCTGGAGCAGCC p.Arg1141_Ser1147del disruptive_inframe_deletion Exon 17 of 34 ENSP00000518769.1
CACNA1HENST00000621827.2 linkn.3422_3442delGGCGCTCCAGCTGGAGCAGCC non_coding_transcript_exon_variant Exon 17 of 37 6 ENSP00000518766.1
CACNA1HENST00000637236.3 linkn.3422_3442delGGCGCTCCAGCTGGAGCAGCC non_coding_transcript_exon_variant Exon 17 of 34 5 ENSP00000492650.2 A0A1W2PS38
CACNA1HENST00000639478.1 linkn.3422_3442delGGCGCTCCAGCTGGAGCAGCC non_coding_transcript_exon_variant Exon 17 of 35 5 ENSP00000491945.1 A0A1W2PQW2
CACNA1HENST00000640028.1 linkn.*1335_*1355delGGCGCTCCAGCTGGAGCAGCC non_coding_transcript_exon_variant Exon 17 of 35 5 ENSP00000491488.1 A0A1W2PQ19
CACNA1HENST00000711442.1 linkn.*2869_*2889delGGCGCTCCAGCTGGAGCAGCC non_coding_transcript_exon_variant Exon 16 of 34 ENSP00000518758.1
CACNA1HENST00000711448.1 linkn.3422_3442delGGCGCTCCAGCTGGAGCAGCC non_coding_transcript_exon_variant Exon 17 of 36 ENSP00000518760.1
CACNA1HENST00000711449.1 linkn.3422_3442delGGCGCTCCAGCTGGAGCAGCC non_coding_transcript_exon_variant Exon 17 of 35 ENSP00000518761.1
CACNA1HENST00000711451.1 linkn.3422_3442delGGCGCTCCAGCTGGAGCAGCC non_coding_transcript_exon_variant Exon 17 of 36 ENSP00000518763.1
CACNA1HENST00000711452.1 linkn.3422_3442delGGCGCTCCAGCTGGAGCAGCC non_coding_transcript_exon_variant Exon 17 of 36 ENSP00000518764.1
CACNA1HENST00000711453.1 linkn.3422_3442delGGCGCTCCAGCTGGAGCAGCC non_coding_transcript_exon_variant Exon 17 of 36 ENSP00000518765.1
CACNA1HENST00000711484.1 linkn.3422_3442delGGCGCTCCAGCTGGAGCAGCC non_coding_transcript_exon_variant Exon 17 of 35 ENSP00000518773.1
CACNA1HENST00000711486.1 linkn.3422_3442delGGCGCTCCAGCTGGAGCAGCC non_coding_transcript_exon_variant Exon 17 of 37 ENSP00000518775.1
CACNA1HENST00000711487.1 linkn.3422_3442delGGCGCTCCAGCTGGAGCAGCC non_coding_transcript_exon_variant Exon 17 of 36 ENSP00000518776.1
CACNA1HENST00000711488.1 linkn.3422_3442delGGCGCTCCAGCTGGAGCAGCC non_coding_transcript_exon_variant Exon 17 of 35 ENSP00000518777.1
CACNA1HENST00000640028.1 linkn.*1335_*1355delGGCGCTCCAGCTGGAGCAGCC 3_prime_UTR_variant Exon 17 of 35 5 ENSP00000491488.1 A0A1W2PQ19
CACNA1HENST00000711442.1 linkn.*2869_*2889delGGCGCTCCAGCTGGAGCAGCC 3_prime_UTR_variant Exon 16 of 34 ENSP00000518758.1

Frequencies

GnomAD3 genomes
AF:
0.000125
AC:
19
AN:
152184
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.000217
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000196
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000103
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000950
AC:
14
AN:
147410
AF XY:
0.0000976
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000456
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.0000762
Gnomad NFE exome
AF:
0.000113
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000768
AC:
107
AN:
1392916
Hom.:
1
AF XY:
0.0000727
AC XY:
50
AN XY:
687594
show subpopulations
African (AFR)
AF:
0.000322
AC:
10
AN:
31062
American (AMR)
AF:
0.000268
AC:
9
AN:
33528
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
24290
East Asian (EAS)
AF:
0.0000274
AC:
1
AN:
36534
South Asian (SAS)
AF:
0.000129
AC:
10
AN:
77544
European-Finnish (FIN)
AF:
0.0000443
AC:
2
AN:
45158
Middle Eastern (MID)
AF:
0.000365
AC:
2
AN:
5476
European-Non Finnish (NFE)
AF:
0.0000610
AC:
66
AN:
1081656
Other (OTH)
AF:
0.000121
AC:
7
AN:
57668
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.444
Heterozygous variant carriers
0
8
16
24
32
40
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
4
8
12
16
20
<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:
0.000125
AC:
19
AN:
152184
Hom.:
0
Cov.:
33
AF XY:
0.0000673
AC XY:
5
AN XY:
74332
show subpopulations
African (AFR)
AF:
0.000217
AC:
9
AN:
41448
American (AMR)
AF:
0.000196
AC:
3
AN:
15284
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5182
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4836
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10624
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.000103
AC:
7
AN:
68022
Other (OTH)
AF:
0.00
AC:
0
AN:
2090
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.486
Heterozygous variant carriers
0
1
2
4
5
6
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:
0.0000435
Hom.:
0
Bravo
AF:
0.000113
Asia WGS
AF:
0.000866
AC:
3
AN:
3478

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Epilepsy, childhood absence, susceptibility to, 6;C4310756:Hyperaldosteronism, familial, type IV Uncertain:1
Mar 07, 2024
Fulgent Genetics, Fulgent Genetics
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Idiopathic generalized epilepsy;C4310756:Hyperaldosteronism, familial, type IV Uncertain:1
Jun 28, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This variant, c.3422_3442del, results in the deletion of 7 amino acid(s) of the CACNA1H protein (p.Arg1141_Ser1147del), but otherwise preserves the integrity of the reading frame. This variant is present in population databases (rs754765356, gnomAD 0.02%), including at least one homozygous and/or hemizygous individual. This variant has not been reported in the literature in individuals affected with CACNA1H-related conditions. ClinVar contains an entry for this variant (Variation ID: 460087). Experimental studies and prediction algorithms are not available or were not evaluated, and the functional significance of this variant is currently unknown. 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. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
PhyloP100
9.5
Mutation Taster
=193/7
polymorphism

Splicing

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

Publications

Other links and lift over

dbSNP: rs746597383; hg19: chr16-1259078; API