Genetic Variant CADM3:p.Thr89Met (chr1-159192614-C-T) – ACMG Classification: Likely_benign (-3 pts)

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 1P and 4B. PP3BS2

The NM_001127173.3(CADM3):c.266C>T(p.Thr89Met) variant causes a missense change. The variant allele was found at a frequency of 0.0000452 in 1,614,064 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 0.000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000043 ( 0 hom. )

Consequence

CADM3
NM_001127173.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.67

Variant links:

Genes affected

CADM3 (HGNC:17601): (cell adhesion molecule 3) The protein encoded by this gene is a calcium-independent cell-cell adhesion protein that can form homodimers or heterodimers with other nectin proteins. The encoded protein has both homophilic and heterophilic cell-cell adhesion activity. This gene is reported to be a tumor suppressor gene. [provided by RefSeq, Oct 2016]

CADM3 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.827

BS2

High AC in GnomAd4 at 10 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CADM3	NM_001127173.3 link	c.266C>T	p.Thr89Met	missense_variant	Exon 3 of 9	ENST00000368125.9	NP_001120645.1	Q8N126-1
CADM3	NM_021189.5 link	c.368C>T	p.Thr123Met	missense_variant	Exon 4 of 10		NP_067012.1	Q8N126-2
CADM3	NM_001346510.2 link	c.266C>T	p.Thr89Met	missense_variant	Exon 3 of 9		NP_001333439.1	Q8N126-3
CADM3	XM_024448760.2 link	c.515C>T	p.Thr172Met	missense_variant	Exon 6 of 12		XP_024304528.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
CADM3	ENST00000368125.9 link	c.266C>T	p.Thr89Met	missense_variant	Exon 3 of 9	1	NM_001127173.3	ENSP00000357107.4	Q8N126-1
CADM3	ENST00000368124.8 link	c.368C>T	p.Thr123Met	missense_variant	Exon 4 of 10	1		ENSP00000357106.4	Q8N126-2
CADM3	ENST00000416746.1 link	c.266C>T	p.Thr89Met	missense_variant	Exon 3 of 7	1		ENSP00000387802.1	A0A0C4DG09

Frequencies

GnomAD3 genomes

AF:

0.0000657

AC:

AN:

152182

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000524

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

GnomAD3 exomes

AF:

0.0000278

AC:

AN:

251458

Hom.:

AF XY:

0.0000221

AC XY:

AN XY:

135892

show subpopulations

Gnomad AFR exome

AF:

0.000123

Gnomad AMR exome

AF:

0.0000868

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000431

AC:

AN:

1461882

Hom.:

Cov.:

AF XY:

0.0000440

AC XY:

AN XY:

727240

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.0000894

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000348

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000441

Gnomad4 OTH exome

AF:

0.0000662

GnomAD4 genome

AF:

0.0000657

AC:

AN:

152182

Hom.:

Cov.:

AF XY:

0.0000672

AC XY:

AN XY:

74356

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.000524

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:

0.0000450

Hom.:

Bravo

AF:

0.0000491

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Feb 27, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.368C>T (p.T123M) alteration is located in exon 4 (coding exon 4) of the CADM3 gene. This alteration results from a C to T substitution at nucleotide position 368, causing the threonine (T) at amino acid position 123 to be replaced by a methionine (M). 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

0.31

BayesDel_addAF

Benign

-0.067

BayesDel_noAF

Benign

-0.10

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.36

.;T;.

Eigen

Uncertain

0.43

Eigen_PC

Uncertain

0.31

FATHMM_MKL

Uncertain

0.92

LIST_S2

Uncertain

0.92

D;D;D

M_CAP

Benign

0.084

MetaRNN

Pathogenic

0.83

D;D;D

MetaSVM

Uncertain

-0.016

MutationAssessor

Uncertain

2.3

.;M;.

PrimateAI

Uncertain

0.54

PROVEAN

Uncertain

-3.0

D;D;D

REVEL

Uncertain

0.43

Sift

Pathogenic

0.0

D;D;D

Sift4G

Pathogenic

0.0010

D;D;D

Polyphen

1.0

D;D;.

Vest4

0.49

MutPred

0.75

.;Loss of catalytic residue at T89 (P = 0.0211);Loss of catalytic residue at T89 (P = 0.0211);

MVP

0.68

MPC

1.1

ClinPred

0.91

GERP RS

5.2

Varity_R

0.33

gMVP

0.64

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