chr16-1204120-C-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -10 ACMG points: 0P and 10B. BP4BP6BS1BS2

The NM_021098.3(CACNA1H):c.2113C>T(p.Arg705Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000261 in 1,612,082 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R705L) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000016 ( 0 hom. )

Consequence

CACNA1H
NM_021098.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:1

Conservation

PhyloP100: 0.155

Publications

3 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 -10 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.28356794).

BP6

Variant 16-1204120-C-T is Benign according to our data. Variant chr16-1204120-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 570351.

BS1

Variant frequency is greater than expected in population amr. GnomAd4 allele frequency = 0.000118 (18/152352) while in subpopulation AMR AF = 0.000653 (10/15308). AF 95% confidence interval is 0.000354. There are 0 homozygotes in GnomAd4. There are 8 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

BS2

High AC in GnomAd4 at 18 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CACNA1H	NM_021098.3 link	c.2113C>T	p.Arg705Cys	missense_variant	Exon 10 of 35	ENST00000348261.11	NP_066921.2	O95180-1B3KQH9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
CACNA1H	ENST00000348261.11 link	c.2113C>T	p.Arg705Cys	missense_variant	Exon 10 of 35	1	NM_021098.3	ENSP00000334198.7	O95180-1
CACNA1H	ENST00000569107.6 link	c.2113C>T	p.Arg705Cys	missense_variant	Exon 10 of 34	1		ENSP00000454990.2	H3BNT0
CACNA1H	ENST00000711493.1 link	c.2113C>T	p.Arg705Cys	missense_variant	Exon 10 of 34			ENSP00000518778.1
CACNA1H	ENST00000565831.7 link	c.2113C>T	p.Arg705Cys	missense_variant	Exon 10 of 34	1		ENSP00000455840.1	O95180-2
CACNA1H	ENST00000711450.1 link	c.2113C>T	p.Arg705Cys	missense_variant	Exon 10 of 35			ENSP00000518762.1
CACNA1H	ENST00000564231.6 link	c.2113C>T	p.Arg705Cys	missense_variant	Exon 10 of 35	1		ENSP00000457555.2	H3BUA8
CACNA1H	ENST00000638323.1 link	c.2074C>T	p.Arg692Cys	missense_variant	Exon 10 of 35	5		ENSP00000492267.1	A0A1W2PR14
CACNA1H	ENST00000562079.6 link	c.2113C>T	p.Arg705Cys	missense_variant	Exon 10 of 34	1		ENSP00000454581.2	H3BMW6
CACNA1H	ENST00000711438.1 link	c.2074C>T	p.Arg692Cys	missense_variant	Exon 10 of 34			ENSP00000518754.1
CACNA1H	ENST00000711482.1 link	c.2113C>T	p.Arg705Cys	missense_variant	Exon 10 of 36			ENSP00000518771.1
CACNA1H	ENST00000711485.1 link	c.2113C>T	p.Arg705Cys	missense_variant	Exon 10 of 35			ENSP00000518774.1
CACNA1H	ENST00000711455.1 link	c.2113C>T	p.Arg705Cys	missense_variant	Exon 10 of 36			ENSP00000518768.1
CACNA1H	ENST00000711483.1 link	c.2113C>T	p.Arg705Cys	missense_variant	Exon 10 of 35			ENSP00000518772.1
CACNA1H	ENST00000711456.1 link	c.2113C>T	p.Arg705Cys	missense_variant	Exon 10 of 34			ENSP00000518769.1
CACNA1H	ENST00000621827.2 link	n.2113C>T		non_coding_transcript_exon_variant	Exon 10 of 37	6		ENSP00000518766.1
CACNA1H	ENST00000637236.3 link	n.2113C>T		non_coding_transcript_exon_variant	Exon 10 of 34	5		ENSP00000492650.2	A0A1W2PS38
CACNA1H	ENST00000639478.1 link	n.2113C>T		non_coding_transcript_exon_variant	Exon 10 of 35	5		ENSP00000491945.1	A0A1W2PQW2
CACNA1H	ENST00000640028.1 link	n.*26C>T		non_coding_transcript_exon_variant	Exon 10 of 35	5		ENSP00000491488.1	A0A1W2PQ19
CACNA1H	ENST00000711442.1 link	n.*1560C>T		non_coding_transcript_exon_variant	Exon 9 of 34			ENSP00000518758.1
CACNA1H	ENST00000711448.1 link	n.2113C>T		non_coding_transcript_exon_variant	Exon 10 of 36			ENSP00000518760.1
CACNA1H	ENST00000711449.1 link	n.2113C>T		non_coding_transcript_exon_variant	Exon 10 of 35			ENSP00000518761.1
CACNA1H	ENST00000711451.1 link	n.2113C>T		non_coding_transcript_exon_variant	Exon 10 of 36			ENSP00000518763.1
CACNA1H	ENST00000711452.1 link	n.2113C>T		non_coding_transcript_exon_variant	Exon 10 of 36			ENSP00000518764.1
CACNA1H	ENST00000711453.1 link	n.2113C>T		non_coding_transcript_exon_variant	Exon 10 of 36			ENSP00000518765.1
CACNA1H	ENST00000711484.1 link	n.2113C>T		non_coding_transcript_exon_variant	Exon 10 of 35			ENSP00000518773.1
CACNA1H	ENST00000711486.1 link	n.2113C>T		non_coding_transcript_exon_variant	Exon 10 of 37			ENSP00000518775.1
CACNA1H	ENST00000711487.1 link	n.2113C>T		non_coding_transcript_exon_variant	Exon 10 of 36			ENSP00000518776.1
CACNA1H	ENST00000711488.1 link	n.2113C>T		non_coding_transcript_exon_variant	Exon 10 of 35			ENSP00000518777.1
CACNA1H	ENST00000640028.1 link	n.*26C>T		3_prime_UTR_variant	Exon 10 of 35	5		ENSP00000491488.1	A0A1W2PQ19
CACNA1H	ENST00000711442.1 link	n.*1560C>T		3_prime_UTR_variant	Exon 9 of 34			ENSP00000518758.1

Frequencies

GnomAD3 genomes

AF:

0.000118

AC:

AN:

152234

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000490

AC:

AN:

245026

AF XY:

0.0000597

show subpopulations

Gnomad AFR exome

AF:

0.0000669

Gnomad AMR exome

AF:

0.0000583

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000560

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000168

GnomAD4 exome

AF:

0.0000164

AC:

AN:

1459730

Hom.:

Cov.:

AF XY:

0.0000207

AC XY:

AN XY:

726112

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33470

American (AMR)

AF:

0.000134

AC:

AN:

44658

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26110

East Asian (EAS)

AF:

0.00

AC:

AN:

39676

South Asian (SAS)

AF:

0.0000813

AC:

AN:

86118

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51998

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000720

AC:

AN:

1111628

Other (OTH)

AF:

0.0000497

AC:

AN:

60304

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.488

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

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

GnomAD4 genome

AF:

0.000118

AC:

AN:

152352

Hom.:

Cov.:

AF XY:

0.000107

AC XY:

AN XY:

74502

show subpopulations

African (AFR)

AF:

0.000168

AC:

AN:

41590

American (AMR)

AF:

0.000653

AC:

AN:

15308

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.000207

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68030

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.483

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

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:

0.0000387

Hom.:

Bravo

AF:

0.000178

ExAC

AF:

0.0000415

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

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

Uncertain:1

Mar 16, 2022

Fulgent Genetics, Fulgent Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Inborn genetic diseases

Uncertain:1

Sep 22, 2022

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.2113C>T (p.R705C) alteration is located in exon 10 (coding exon 9) of the CACNA1H gene. This alteration results from a C to T substitution at nucleotide position 2113, causing the arginine (R) at amino acid position 705 to be replaced by a cysteine (C). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

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

Benign:1

Jan 06, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.14

BayesDel_noAF

Benign

-0.15

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.53

D;.;.;.

Eigen

Benign

-0.73

Eigen_PC

Benign

-0.94

FATHMM_MKL

Benign

0.035

LIST_S2

Uncertain

0.97

D;D;D;.

M_CAP

Pathogenic

0.78

MetaRNN

Benign

0.28

T;T;T;T

MetaSVM

Uncertain

0.26

MutationAssessor

Benign

1.9

L;.;L;L

PhyloP100

0.15

PrimateAI

Benign

0.44

PROVEAN

Uncertain

-3.4

D;.;D;D

REVEL

Benign

0.29

Sift

Uncertain

0.0060

D;.;D;D

Sift4G

Benign

0.13

T;.;T;T

Polyphen

0.97

D;.;D;D

Vest4

0.31

MVP

0.86

ClinPred

0.22

GERP RS

-1.2

Varity_R

0.14

gMVP

0.32

Mutation Taster

=96/4

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over