NM_001205293.3:c.2069_2070delGCinsAT

Variant names:

• chr1-181721870-GC-AT
• NM_001205293.3:c.2069_2070delGCinsAT
• CACNA1E p.Gly690Asp

GermlineCancer (beta)

Variant summary

Our verdict is Uncertain significance.

+3 Uncertain · Warm

-7

-6

-1

0

+5

+6

+9

+10

BenignB

Likely BenignLB

UncertainVUS

Likely PathogenicLP

PathogenicP

The variant received 3 classification points (ACGS-UK Somatic Oncogenicity v2025). O3_ModerateO7_Supporting

The NM_001205293.3(CACNA1E):c.2069_2070delGCinsAT (p.Gly690Asp) variant causes a missense change. The gene CACNA1E is a known oncogene (CancerMine: 1 oncogene citations). Note: allele frequency estimates from gnomAD may be inaccurate for this variant type (MNP or indel longer than 3 bp) due to technology limitations. The variant is absent from the gnomAD population database at sites with sufficient sequencing coverage. The affected nucleotide is highly conserved across species (PhyloP 100-way vertebrate score: 8.02). No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. 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) Other variants at the same amino acid position have been reported in ClinVar (not pathogenic): p.G690D: Uncertain_significance (ClinVar VariationId 521400, 1 star) 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: Not reported in ClinVar
• Conservation: PhyloP100: 8.02
• Publications: 0 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 3 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])
	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.2069_2070delGCinsAT p.Gly690Asp	missense	N/A	Prot: NP_001192222.1 UniProt:
	CACNA1E NM_000721.4		c.2069_2070delGCinsAT p.Gly690Asp	missense	N/A	Prot: NP_000712.2 UniProt:
	CACNA1E NM_001205294.2		c.2069_2070delGCinsAT p.Gly690Asp	missense	N/A	Prot: NP_001192223.1 UniProt:

CACNA1E NM_001205293.3

MANE Select

HGVSc / HGVSpc.2069_2070delGCinsATp.Gly690Asp

Exon rankN/A

missense

Prot: NP_001192222.1UniProt: Q15878-1

CACNA1E NM_000721.4

HGVSc / HGVSpc.2069_2070delGCinsATp.Gly690Asp

Exon rankN/A

missense

Prot: NP_000712.2UniProt: Q15878-3

CACNA1E NM_001205294.2

HGVSc / HGVSpc.2069_2070delGCinsATp.Gly690Asp

Exon rankN/A

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.2069_2070delGCinsAT p.Gly690Asp	missense	N/A	Prot: ENSP00000356545.2 UniProt:
	CACNA1E ENST00000360108.7	TSL:5	c.2069_2070delGCinsAT p.Gly690Asp	missense	N/A	Prot: ENSP00000353222.3 UniProt:
	CACNA1E ENST00000367570.6	TSL:1	c.2069_2070delGCinsAT p.Gly690Asp	missense	N/A	Prot: ENSP00000356542.1 UniProt:

CACNA1E ENST00000367573.7

TSL:1MANE Select

HGVSc / HGVSpc.2069_2070delGCinsATp.Gly690Asp

Exon rankN/A

missense

Prot: ENSP00000356545.2UniProt: Q15878-1

CACNA1E ENST00000360108.7

TSL:5

HGVSc / HGVSpc.2069_2070delGCinsATp.Gly690Asp

Exon rankN/A

missense

Prot: ENSP00000353222.3UniProt: F8W9Z1

CACNA1E ENST00000367570.6

TSL:1

HGVSc / HGVSpc.2069_2070delGCinsATp.Gly690Asp

Exon rankN/A

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 2 sources Large-scale international reference populations
GnomAD3 genomes	AF:	AC:	Hom:	AN:	Cov:32
GnomAD4 genome	AF:	AC:	Hom:	AN:	Cov:32

Showing 2 sources

ClinVar

Not reported in ClinVar

Computational Scores

Algorithm	Calibrated pred.	Score	Prediction
PhyloP100	Pathogenic	8.0

Showing 1 of 1 scores

Splicing Scores

No splicing scores have been computed for this variant.

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

hg19: chr1-181691006;

ACMG debug oncogenicity

ACGS debug oncogenicity

ACMG debug germline

Submit to ClinVar