2-79651592-G-C

Variant names:

• chr2-79651592-G-C
• NM_001282597.3:c.36G>C

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_001282597.3(CTNNA2):​c.36G>C​(p.Trp12Cys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: CTNNA2 NM_001282597.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.56

Genes affected

CTNNA2 (HGNC:2510): (catenin alpha 2) Enables actin filament binding activity. Involved in negative regulation of Arp2/3 complex-mediated actin nucleation; regulation of neuron migration; and regulation of neuron projection development. Located in cytoplasm. Implicated in complex cortical dysplasia with other brain malformations. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.83

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CTNNA2	NM_001282597.3	c.36G>C	p.Trp12Cys	missense_variant	Exon 2 of 19	ENST00000402739.9	NP_001269526.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CTNNA2	ENST00000402739.9	c.36G>C	p.Trp12Cys	missense_variant	Exon 2 of 19	1	NM_001282597.3	ENSP00000384638.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Oct 01, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.36G>C (p.W12C) alteration is located in exon 2 (coding exon 1) of the CTNNA2 gene. This alteration results from a G to C substitution at nucleotide position 36, causing the tryptophan (W) at amino acid position 12 to be replaced by a cysteine (C). 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	1.0
BayesDel_addAF	Pathogenic	0.37	D
BayesDel_noAF	Pathogenic	0.29
CADD	Pathogenic	33
DANN	Uncertain	0.99
DEOGEN2	Benign	0.20	.;.;T;.;T;.;D
Eigen	Pathogenic	0.91
Eigen_PC	Pathogenic	0.91
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.98	.;D;D;D;D;D;D
M_CAP	Uncertain	0.086	D
MetaRNN	Pathogenic	0.83	D;D;D;D;D;D;D
MetaSVM	Uncertain	0.022	D
MutationAssessor	Uncertain	2.6	M;M;.;M;.;.;M
PrimateAI	Pathogenic	0.93	D
PROVEAN	Pathogenic	-7.8	D;D;D;.;D;D;D
REVEL	Uncertain	0.54
Sift	Uncertain	0.0010	D;D;D;.;D;D;D
Sift4G	Uncertain	0.0020	D;D;D;D;D;D;D
Polyphen		0.93	P;P;.;P;.;.;D
Vest4		0.91
MutPred		0.56		Gain of disorder (P = 0.028);Gain of disorder (P = 0.028);Gain of disorder (P = 0.028);Gain of disorder (P = 0.028);Gain of disorder (P = 0.028);Gain of disorder (P = 0.028);Gain of disorder (P = 0.028);
MVP		0.85
MPC		2.0
ClinPred		1.0	D
GERP RS		5.9
Varity_R		0.83
gMVP		0.87

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr2-79878718;