Variant 22-36566413-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PP3_Moderate

The NM_006078.5(CACNG2):c.376G>A(p.Glu126Lys) variant causes a missense change. The variant allele was found at a frequency of 0.00000682 in 1,613,992 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 Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000068 ( 0 hom. )

Consequence

CACNG2
NM_006078.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.79

Variant links:

Genes affected

CACNG2 (HGNC:1406): (calcium voltage-gated channel auxiliary subunit gamma 2) The protein encoded by this gene is a type I transmembrane AMPA receptor regulatory protein (TARP). TARPs regulate both trafficking and channel gating of the AMPA receptors. The AMPA subtype of ionotropic glutamate receptors are ligand gated ion channels that are typically activated by glutamate released from presynaptic neuron terminals and mediate fast neurotransmission in excitatory synapses. TARPs thus play an important role in synaptic plasticity, learning and memory. Mutations in this gene cause an autosomal dominant form of cognitive disability. [provided by RefSeq, Jul 2017]

CACNG2 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.856

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
CACNG2	NM_006078.5 linkuse as main transcript	c.376G>A	p.Glu126Lys	missense_variant	3/4	ENST00000300105.7
CACNG2	NM_001379051.1 linkuse as main transcript	c.307G>A	p.Glu103Lys	missense_variant	4/5
CACNG2	XM_017028531.3 linkuse as main transcript	c.118G>A	p.Glu40Lys	missense_variant	2/3
CACNG2	NR_166440.1 linkuse as main transcript	n.1552G>A		non_coding_transcript_exon_variant	3/5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CACNG2	ENST00000300105.7 linkuse as main transcript	c.376G>A	p.Glu126Lys	missense_variant	3/4	1	NM_006078.5	P1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152192

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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

GnomAD4 exome

AF:

0.00000684

AC:

AN:

1461800

Hom.:

Cov.:

AF XY:

0.00000963

AC XY:

AN XY:

727198

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000630

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152192

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74354

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000565

Hom.:

Bravo

AF:

0.00000378

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 05, 2023

The c.376G>A (p.E126K) alteration is located in exon 3 (coding exon 3) of the CACNG2 gene. This alteration results from a G to A substitution at nucleotide position 376, causing the glutamic acid (E) at amino acid position 126 to be replaced by a lysine (K). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.93

BayesDel_addAF

Pathogenic

0.39

BayesDel_noAF

Pathogenic

0.32

Cadd

Pathogenic

Dann

Uncertain

1.0

DEOGEN2

Benign

0.41

Eigen

Uncertain

0.54

Eigen_PC

Uncertain

0.54

FATHMM_MKL

Uncertain

0.97

LIST_S2

Pathogenic

1.0

M_CAP

Uncertain

0.11

MetaRNN

Pathogenic

0.86

MetaSVM

Uncertain

0.44

MutationAssessor

Benign

1.8

MutationTaster

Benign

1.0

PrimateAI

Pathogenic

0.93

PROVEAN

Benign

-0.67

REVEL

Pathogenic

0.74

Sift

Benign

0.050

Sift4G

Benign

0.35

Polyphen

1.0

Vest4

0.88

MutPred

0.54

Loss of ubiquitination at K129 (P = 0.0362);

MVP

0.97

MPC

1.3

ClinPred

0.95

GERP RS

4.8

Varity_R

0.41

gMVP

0.96

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over