chr16-1220205-C-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -16 ACMG points: 0P and 16B. BP6_Very_StrongBS1BS2

The ENST00000711482.1(CACNA1H):c.6166C>T(p.Arg2056*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00101 in 1,556,898 control chromosomes in the GnomAD database, including 13 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0057 ( 11 hom., cov: 35)

Exomes 𝑓: 0.00051 ( 2 hom. )

Consequence

CACNA1H
ENST00000711482.1 stop_gained

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: -4.99

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)

CACNA1H links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -16 ACMG points.

BP6

Variant 16-1220205-C-T is Benign according to our data. Variant chr16-1220205-C-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 460162.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00569 (866/152298) while in subpopulation AFR AF = 0.0194 (805/41564). AF 95% confidence interval is 0.0183. There are 11 homozygotes in GnomAd4. There are 406 alleles in the male GnomAd4 subpopulation. Median coverage is 35. This position passed quality control check.

BS2

High AC in GnomAd4 at 866 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000711482.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CACNA1H	NM_021098.3	MANE Select	c.6273C>T	p.Ala2091Ala	synonymous	Exon 35 of 35	NP_066921.2
	CACNA1H	NM_001005407.2		c.6255C>T	p.Ala2085Ala	synonymous	Exon 34 of 34	NP_001005407.1

Ensembl Transcripts

Gene	Transcript	HGVSc	HGVSp	Effect	Exon Rank	Protein
CACNA1H	ENST00000711482.1	c.6166C>T	p.Arg2056*	stop_gained	Exon 36 of 36	ENSP00000518771.1
CACNA1H	ENST00000711485.1	c.6115C>T	p.Arg2039*	stop_gained	Exon 35 of 35	ENSP00000518774.1
CACNA1H	ENST00000711455.1	c.6088C>T	p.Arg2030*	stop_gained	Exon 36 of 36	ENSP00000518768.1

Frequencies

GnomAD3 genomes

AF:

0.00568

AC:

864

AN:

152184

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0194

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00307

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000103

Gnomad OTH

AF:

0.00287

GnomAD2 exomes

AF:

0.00127

AC:

238

AN:

188062

AF XY:

0.000984

show subpopulations

Gnomad AFR exome

AF:

0.0201

Gnomad AMR exome

AF:

0.000920

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000567

Gnomad OTH exome

AF:

0.00132

GnomAD4 exome

AF:

0.000508

AC:

713

AN:

1404600

Hom.:

Cov.:

AF XY:

0.000453

AC XY:

315

AN XY:

695956

show subpopulations

African (AFR)

AF:

0.0182

AC:

540

AN:

29626

American (AMR)

AF:

0.00115

AC:

AN:

37424

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

23484

East Asian (EAS)

AF:

0.0000543

AC:

AN:

36802

South Asian (SAS)

AF:

0.0000380

AC:

AN:

78862

European-Finnish (FIN)

AF:

0.00

AC:

AN:

45888

Middle Eastern (MID)

AF:

0.00108

AC:

AN:

5580

European-Non Finnish (NFE)

AF:

0.0000386

AC:

AN:

1088908

Other (OTH)

AF:

0.00133

AC:

AN:

58026

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.484

Heterozygous variant carriers

131

175

219

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

110

<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:

0.00569

AC:

866

AN:

152298

Hom.:

Cov.:

AF XY:

0.00545

AC XY:

406

AN XY:

74468

show subpopulations

African (AFR)

AF:

0.0194

AC:

805

AN:

41564

American (AMR)

AF:

0.00307

AC:

AN:

15310

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.000193

AC:

AN:

5170

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000103

AC:

AN:

68008

Other (OTH)

AF:

0.00284

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

127

169

211

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

<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:

0.00253

Hom.:

Bravo

AF:

0.00652

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Oct 25, 2017

Athena Diagnostics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Breakthrough Genomics, Breakthrough Genomics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:not provided

Epilepsy, childhood absence, susceptibility to, 6;C4310756:Hyperaldosteronism, familial, type IV

Benign:1

Aug 09, 2021

Fulgent Genetics, Fulgent Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Idiopathic generalized epilepsy;C4310756:Hyperaldosteronism, familial, type IV

Benign:1

Jan 08, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.77

CADD

Benign

0.056

(source)

DANN

Benign

0.77

PhyloP100

-5.0

Mutation Taster

=99/1

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over