rs757759305

Variant names:

• chr16-1207434-AG-A
• rs757759305
• NM_021098.3:c.3063+9delG

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP6_Moderate BS2

The ENST00000569107.6(CACNA1H):​c.3063+5delG variant causes a splice region, intron change. The variant allele was found at a frequency of 0.0000062 in 1,611,868 control chromosomes in the GnomAD database, with no homozygous occurrence. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.000013 (0 hom., cov: 30)
  • Exomes 𝑓: 0.0000055 (0 hom.)
• Consequence: CACNA1H ENST00000569107.6 splice_region, intron
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 4.13
• Publications: 0 publications found

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)

ACMG classification

Our verdict: Likely_benign. The variant received -6 ACMG points.

• BP6: Variant 16-1207434-AG-A is Benign according to our data. Variant chr16-1207434-AG-A is described in ClinVar as Likely_benign. ClinVar VariationId is 529643.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS2: High AC in GnomAdExome4 at 8 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000569107.6. 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.3063+9delG		intron	N/A	NP_066921.2
	CACNA1H	NM_001005407.2		c.3063+9delG		intron	N/A	NP_001005407.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CACNA1H	ENST00000348261.11	TSL:1 MANE Select	c.3063+5delG		splice_region intron	N/A	ENSP00000334198.7
	CACNA1H	ENST00000569107.6	TSL:1	c.3063+5delG		splice_region intron	N/A	ENSP00000454990.2
	CACNA1H	ENST00000711493.1		c.3063+5delG		splice_region intron	N/A	ENSP00000518778.1

Frequencies

GnomAD3 genomes AF: 0.0000132 AC: 2 AN: 151578 Hom.: 0 Cov.: 30

Gnomad AFR AF: 0.0000243

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

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: 0.0000147

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.00000811 AC: 2 AN: 246506 AF XY: 0.00000744

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000582

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: 0.00000548 AC: 8 AN: 1460290 Hom.: 0 Cov.: 33 AF XY: 0.00000413 AC XY: 3 AN XY: 726372

African (AFR) AF: 0.00 AC: 0 AN: 33468

American (AMR) AF: 0.0000224 AC: 1 AN: 44672

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26122

East Asian (EAS) AF: 0.00 AC: 0 AN: 39694

South Asian (SAS) AF: 0.00 AC: 0 AN: 86148

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52428

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5760

European-Non Finnish (NFE) AF: 0.00000630 AC: 7 AN: 1111654

Other (OTH) AF: 0.00 AC: 0 AN: 60344

GnomAD4 genome AF: 0.0000132 AC: 2 AN: 151578 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 74000

African (AFR) AF: 0.0000243 AC: 1 AN: 41186

American (AMR) AF: 0.00 AC: 0 AN: 15242

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5138

South Asian (SAS) AF: 0.00 AC: 0 AN: 4788

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10562

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 67882

Other (OTH) AF: 0.00 AC: 0 AN: 2086

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000264

ClinVar

ClinVar submissions as Germline

Significance: Likely benign

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	-	1	Idiopathic generalized epilepsy;C4310756:Hyperaldosteronism, familial, type IV (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		4.1
Mutation Taster		=82/18	polymorphism

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

Other links and lift over

dbSNP: rs757759305; hg19: chr16-1257434;