chr1-181721870-G-A

Variant names:

• chr1-181721870-G-A
• rs1361083258
• NM_001205293.3:c.2069G>A
• CACNA1E p.Gly690Asp

GermlineCancer (beta)

Variant summary

Our verdict is Uncertain significance.

+4 Uncertain · Hot

-7

-6

-1

0

+5

+6

+9

+10

BenignB

Likely BenignLB

UncertainVUS

Likely PathogenicLP

PathogenicP

The variant received 4 classification points (ACGS-UK Somatic Oncogenicity v2025). O3_ModerateO6_SupportingO7_Supporting

The NM_001205293.3(CACNA1E):c.2069G>A (p.Gly690Asp) variant causes a missense change involving the alteration of a conserved nucleotide. The gene CACNA1E is a known oncogene (CancerMine: 1 oncogene citations). The variant is absent from the gnomAD population database at sites with sufficient sequencing coverage. In-silico predictor (REVEL) classifies this variant as likely damaging/oncogenic. Splicing prediction tools (SpliceAI) predict no significant impact on normal splicing. The affected nucleotide is highly conserved across species (PhyloP 100-way vertebrate score: 8.02). Variant has been reported in ClinVar as Uncertain Significance (★). A different missense at the same amino acid position has been reported as Pathogenic/Likely Pathogenic in ClinVar: p.G690V: Likely_pathogenic (ClinVar VariationId 1346057, 1 star) The variant has been observed in cBioPortal in 1 sample across 1 study and 1 cancer type; somatic enrichment level: NONE (Observed in at most one deduplicated cBioPortal case.). This exact variant is curated in the UniProt human variants database as Uncertain Significance; it is also listed as a COSMIC curated somatic variant.

• Frequency: Genomes: not found (cov: 32)
• Consequence: CACNA1E NM_001205293.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter P:1 U:1
• Conservation: PhyloP100: 8.02
• Publications: 1 publications found

Genes affected

CACNA1E (HGNC:1392): (calcium voltage-gated channel subunit alpha1 E) Voltage-dependent calcium channels are multisubunit complexes consisting of alpha-1, alpha-2, beta, and delta subunits in a 1:1:1:1 ratio. These channels mediate the entry of calcium ions into excitable cells, and are also involved in a variety of calcium-dependent processes, including muscle contraction, hormone or neurotransmitter release, gene expression, cell motility, cell division and cell death. This gene encodes the alpha-1E subunit of the R-type calcium channels, which belong to the 'high-voltage activated' group that maybe involved in the modulation of firing patterns of neurons important for information processing. Alternatively spliced transcript variants encoding different isoforms have been described for this gene. [provided by RefSeq, Apr 2011]

CACNA1E Gene-Disease associations (from GenCC):

• developmental and epileptic encephalopathy, 69

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, G2P, Illumina, Labcorp Genetics (formerly Invitae)
• genetic developmental and epileptic encephalopathy

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• neurodevelopmental disorder

  Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics

Classification according to ACGS-UK Somatic Oncogenicity v2025

Classification was made for transcript:

Our verdict: Uncertain_significance. The variant received 4 points.

Apply	Criterion Code & Title / Strength	Strength	Rationale / Clinical Context
	O3Absent or very rare in population		Absent or extremely rare in gnomAD (AC ≤ 2) — O3 moderate; GnomAD: AF = absent, AC = 0 — absent/extremely rare (O3 moderate [+2])
	O6Computational evidence supports deleterious effect		Computational evidence supports a deleterious/oncogenic effect; Missense variant — primary computational scorer supports an oncogenic/deleterious effect
	O7Mutational hotspot or critical domain		Supporting: cancerhotspots.org hit, critical domain, or missense neighbourhood hotspot; No cancerhotspots.org hit at this position; UniProt domain: 0 pathogenic, 0 benign.; ±8 AA neighbourhood: 2 pathogenic, 1 benign (OR vs. background: 8.3); Variant does not impact splicing — splice-hotspot path not applicable

Variant Effect in Transcripts

Automated classification analysis was done for transcript: NM_001205293.3. You can select a different transcript below to see updated classification assignments.

RefSeq Transcripts

Sel.	Gene / Transcript	Tags	HGVSc / HGVSp	Effect	Exon rank	Protein / UniProt
	CACNA1E NM_001205293.3	MANE Select	c.2069G>A p.Gly690Asp	missense	Exon 16 of 48	Prot: NP_001192222.1 UniProt:
	CACNA1E NM_000721.4		c.2069G>A p.Gly690Asp	missense	Exon 16 of 47	Prot: NP_000712.2 UniProt:
	CACNA1E NM_001205294.2		c.2069G>A p.Gly690Asp	missense	Exon 16 of 46	Prot: NP_001192223.1 UniProt:

CACNA1E NM_001205293.3

MANE Select

HGVSc / HGVSpc.2069G>Ap.Gly690Asp

Exon rankExon 16 of 48

missense

Prot: NP_001192222.1UniProt: Q15878-1

CACNA1E NM_000721.4

HGVSc / HGVSpc.2069G>Ap.Gly690Asp

Exon rankExon 16 of 47

missense

Prot: NP_000712.2UniProt: Q15878-3

CACNA1E NM_001205294.2

HGVSc / HGVSpc.2069G>Ap.Gly690Asp

Exon rankExon 16 of 46

missense

Prot: NP_001192223.1UniProt: Q15878-2

Ensembl Transcripts

Sel.	Gene / Transcript	Tags	HGVSc / HGVSp	Effect	Exon rank	Protein / UniProt
	CACNA1E ENST00000367573.7	TSL:1MANE Select	c.2069G>A p.Gly690Asp	missense	Exon 16 of 48	Prot: ENSP00000356545.2 UniProt:
	CACNA1E ENST00000360108.7	TSL:5	c.2069G>A p.Gly690Asp	missense	Exon 16 of 47	Prot: ENSP00000353222.3 UniProt:
	CACNA1E ENST00000367570.6	TSL:1	c.2069G>A p.Gly690Asp	missense	Exon 16 of 47	Prot: ENSP00000356542.1 UniProt:

CACNA1E ENST00000367573.7

TSL:1MANE Select

HGVSc / HGVSpc.2069G>Ap.Gly690Asp

Exon rankExon 16 of 48

missense

Prot: ENSP00000356545.2UniProt: Q15878-1

CACNA1E ENST00000360108.7

TSL:5

HGVSc / HGVSpc.2069G>Ap.Gly690Asp

Exon rankExon 16 of 47

missense

Prot: ENSP00000353222.3UniProt: F8W9Z1

CACNA1E ENST00000367570.6

TSL:1

HGVSc / HGVSpc.2069G>Ap.Gly690Asp

Exon rankExon 16 of 47

missense

Prot: ENSP00000356542.1UniProt: Q15878-3

Frequencies

Allele frequencies (AF), counts (AC/AN), homozygotes and coverage

Common (AF > 0.05 / Hom > 5)

Rare (AF ≤ 0.0001 / Hom ≤ 1)

Source / population	AF	AC	Hom	AN	Coverage
Global population databases 5 sources Large-scale international reference populations
GnomAD3 genomes	AF:	AC:	Hom:	AN:	Cov:32
GnomAD4 exome	AF:	AC:	Hom:	AN:	Cov:27
GnomAD4 genome	AF:	AC:	Hom:	AN:	Cov:32
TOPMed (Bravo)	AF: 0.00000378	AC:1	Hom:0	AN:264690	Cov:
ALFA (dbGaP/dbSNP Allele Frequency Aggregator)	AF: 0.00	AC:0	Hom:0	AN:14846	Cov:

Showing 5 sources

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
1	-	-	Developmental and epileptic encephalopathy (1)
-	1	-	Inborn genetic diseases (1)

Computational Scores

Algorithm	Calibrated pred.	Score	Prediction
AlphaGenome AVI	Pathogenic	30
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.57	D
BayesDel_noAF	Pathogenic	0.58
CADD	Pathogenic	26
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.99	D
Eigen	Pathogenic	1.0
Eigen_PC	Pathogenic	0.92
FATHMM_MKL	Pathogenic	0.99	D
FuncVEP CTI	Pathogenic	1.0
GPN-Star LLR	N/A	-9.2
GPN-Star score	N/A	9.2
LIST_S2	Pathogenic	0.99	D
M_CAP	Pathogenic	0.91	D
MetaRNN	Pathogenic	0.98	D
MetaSVM	Pathogenic	1.0	D
Mutation Taster	N/A	1/99	disease causing
MutationAssessor	Pathogenic	3.6	H
PhyloP100	Pathogenic	8.0
popEVE	Pathogenic	-5.2
PrimateAI	Pathogenic	0.94	D
PROVEAN	Pathogenic	-6.1	D
REVEL	Pathogenic	0.97
Sift	Uncertain	0.0050	D
Sift4G	Uncertain	0.0060	D
Varity_R	N/A	0.79
VESM-3B	Benign	-14

Showing 28 of 28 scores

Splicing Scores

Algorithm	Calibrated pred.	Score	Prediction
Pangolin (max)	Benign	0.040
SpliceAI score (max)	Benign	0.010	Details are displayed if max score is > 0.2

Showing 2 of 2 scores

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

MaveDB functional evidence

MaveDB is a public repository of laboratory assays that test the effect of thousands of variants at once — treat this as supporting research data and interpret it with great caution; it is not a clinical classification.

No MaveDB functional evidence found for this variant.

Other links and lift over

dbSNP: rs1361083258;

hg19: chr1-181691006;

COSMIC: COSV100701379;

ACMG debug oncogenicity

ACGS debug oncogenicity

ACMG debug germline

Submit to ClinVar