3-86066778-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_001167675.2(CADM2):c.1210A>G(p.Ile404Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000138 in 1,449,702 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: CADM2 NM_001167675.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.29

Genes affected

CADM2 (HGNC:29849): (cell adhesion molecule 2) This gene encodes a member of the synaptic cell adhesion molecule 1 (SynCAM) family which belongs to the immunoglobulin (Ig) superfamily. The encoded protein has three Ig-like domains and a cytosolic protein 4.1 binding site near the C-terminus. Proteins belonging to the protein 4.1 family crosslink spectrin and interact with other cytoskeletal proteins. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Feb 2012]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.36657998).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CADM2	NM_001167675.2	c.1210A>G	p.Ile404Val	missense_variant	10/10	ENST00000383699.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CADM2	ENST00000383699.8	c.1210A>G	p.Ile404Val	missense_variant	10/10	1	NM_001167675.2	A1
CADM2	ENST00000405615.2	c.1309A>G	p.Ile437Val	missense_variant	10/10	1
CADM2	ENST00000407528.6	c.1303A>G	p.Ile435Val	missense_variant	10/10	1		P4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000138 AC: 2 AN: 1449702 Hom.: 0 Cov.: 26 AF XY: 0.00000139 AC XY: 1 AN XY: 721992

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000253

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 9.08e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 28, 2023

The c.1309A>G (p.I437V) alteration is located in exon 10 (coding exon 10) of the CADM2 gene. This alteration results from a A to G substitution at nucleotide position 1309, causing the isoleucine (I) at amino acid position 437 to be replaced by a valine (V). 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	Benign	0.22
BayesDel_addAF	Benign	-0.00070	T
BayesDel_noAF	Uncertain	-0.070
Cadd	Uncertain	26
Dann	Uncertain	1.0
Eigen	Pathogenic	0.70
Eigen_PC	Pathogenic	0.68
FATHMM_MKL	Pathogenic	0.98	D
M_CAP	Benign	0.052	D
MetaRNN	Benign	0.37	T;T;T
MetaSVM	Uncertain	0.18	D
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Uncertain	0.68	T
PROVEAN	Benign	-0.83	N;N;N
REVEL	Uncertain	0.45
Sift	Uncertain	0.0020	D;D;D
Sift4G	Pathogenic	0.0	D;D;D
Polyphen		0.98, 1.0	.;D;D
Vest4		0.43
MutPred		0.39		.;Loss of ubiquitination at K431 (P = 0.0638);.;
MVP		0.66
MPC		1.1
ClinPred		0.86	D
GERP RS		5.3
Varity_R		0.33
gMVP		0.55

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

Other links and lift over

dbSNP: rs1203224312; hg19: chr3-86115928;