NM_021098.3:c.3173T>C

Variant names:

• chr16-1208031-T-C
• rs1369723667
• NM_021098.3:c.3173T>C

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 1P and 6B. PP3 BP6_Moderate BS2

The NM_021098.3(CACNA1H):​c.3173T>C​(p.Leu1058Pro) variant causes a missense change. The variant allele was found at a frequency of 0.00000481 in 1,454,084 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000048 (0 hom.)
• Consequence: CACNA1H NM_021098.3 missense
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 3.71
• Publications: 1 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 -5 ACMG points.

• PP3: MetaRNN computational evidence supports a deleterious effect, 0.829
• BP6: Variant 16-1208031-T-C is Benign according to our data. Variant chr16-1208031-T-C is described in ClinVar as Benign. ClinVar VariationId is 529609.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS2: High AC in GnomAdExome4 at 7 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_021098.3. 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.3173T>C	p.Leu1058Pro	missense	Exon 16 of 35	NP_066921.2
	CACNA1H	NM_001005407.2		c.3173T>C	p.Leu1058Pro	missense	Exon 16 of 34	NP_001005407.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CACNA1H	ENST00000348261.11	TSL:1 MANE Select	c.3173T>C	p.Leu1058Pro	missense	Exon 16 of 35	ENSP00000334198.7
	CACNA1H	ENST00000569107.6	TSL:1	c.3173T>C	p.Leu1058Pro	missense	Exon 16 of 34	ENSP00000454990.2
	CACNA1H	ENST00000711493.1		c.3173T>C	p.Leu1058Pro	missense	Exon 16 of 34	ENSP00000518778.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.0000255 AC: 6 AN: 235594 AF XY: 0.0000312

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.000179

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: 0.00000481 AC: 7 AN: 1454084 Hom.: 0 Cov.: 33 AF XY: 0.00000554 AC XY: 4 AN XY: 722614

African (AFR) AF: 0.00 AC: 0 AN: 33342

American (AMR) AF: 0.000159 AC: 7 AN: 43944

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25964

East Asian (EAS) AF: 0.00 AC: 0 AN: 39338

South Asian (SAS) AF: 0.00 AC: 0 AN: 84634

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 51760

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5668

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1109322

Other (OTH) AF: 0.00 AC: 0 AN: 60112

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Idiopathic generalized epilepsy;C4310756:Hyperaldosteronism, familial, type IV Benign:1

Jun 25, 2024

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
AlphaMissense	Benign	0.19
BayesDel_addAF	Uncertain	0.16	D
BayesDel_noAF	Pathogenic	0.25
CADD	Benign	23
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.46	T
Eigen	Uncertain	0.30
Eigen_PC	Benign	0.19
FATHMM_MKL	Uncertain	0.89	D
LIST_S2	Benign	0.64	T
M_CAP	Uncertain	0.21	D
MetaRNN	Pathogenic	0.83	D
MetaSVM	Uncertain	0.57	D
MutationAssessor	Uncertain	2.0	M
PhyloP100		3.7
PrimateAI	Uncertain	0.49	T
PROVEAN	Uncertain	-3.3	D
REVEL	Pathogenic	0.71
Sift	Benign	0.15	T
Sift4G	Benign	0.14	T
Polyphen		0.99	D
Vest4		0.53
MutPred		0.58		Gain of disorder (P = 0.0216)
MVP		0.98
ClinPred		0.82	D
GERP RS		4.0
Varity_R		0.81
gMVP		0.67
Mutation Taster		=58/42	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: rs1369723667; hg19: chr16-1258031;