Genetic Variant CPXM2:p.Gly643Asp (chr10-123754752-C-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PP3_Moderate

The NM_198148.3(CPXM2):c.1928G>A(p.Gly643Asp) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000703 in 1,593,022 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 0.000079 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000069 ( 0 hom. )

Consequence

CPXM2
NM_198148.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.82

Publications

2 publications found

Variant links:

Genes affected

CPXM2 (HGNC:26977): (carboxypeptidase X, M14 family member 2) Predicted to enable metallocarboxypeptidase activity. Predicted to be involved in peptide metabolic process and protein processing. Predicted to be active in extracellular space. [provided by Alliance of Genome Resources, Apr 2022]

CPXM2 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.844

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CPXM2	NM_198148.3 link	c.1928G>A	p.Gly643Asp	missense_variant	Exon 13 of 14	ENST00000241305.4	NP_937791.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
CPXM2	ENST00000241305.4 link	c.1928G>A	p.Gly643Asp	missense_variant	Exon 13 of 14	1	NM_198148.3	ENSP00000241305.3	Q8N436
CPXM2	ENST00000615851.4 link	c.416G>A	p.Gly139Asp	missense_variant	Exon 13 of 15	5		ENSP00000483180.1	Q49AT5
CPXM2	ENST00000368854.7 link	n.1975G>A		non_coding_transcript_exon_variant	Exon 15 of 20	2

Frequencies

GnomAD3 genomes

AF:

0.0000789

AC:

AN:

152150

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000458

Gnomad ASJ

AF:

0.00144

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000119

AC:

AN:

251446

AF XY:

0.0000883

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000289

Gnomad ASJ exome

AF:

0.00179

Gnomad EAS 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:

0.0000694

AC:

100

AN:

1440872

Hom.:

Cov.:

AF XY:

0.0000682

AC XY:

AN XY:

718376

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33092

American (AMR)

AF:

0.000224

AC:

AN:

44706

Ashkenazi Jewish (ASJ)

AF:

0.00192

AC:

AN:

25990

East Asian (EAS)

AF:

0.00

AC:

AN:

39614

South Asian (SAS)

AF:

0.0000117

AC:

AN:

85816

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53410

Middle Eastern (MID)

AF:

0.000524

AC:

AN:

5728

European-Non Finnish (NFE)

AF:

0.0000201

AC:

AN:

1092832

Other (OTH)

AF:

0.000235

AC:

AN:

59684

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.480

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000789

AC:

AN:

152150

Hom.:

Cov.:

AF XY:

0.000108

AC XY:

AN XY:

74314

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41426

American (AMR)

AF:

0.000458

AC:

AN:

15278

Ashkenazi Jewish (ASJ)

AF:

0.00144

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5176

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10612

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68034

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.508

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.000261

Hom.:

Bravo

AF:

0.0000869

ExAC

AF:

0.0000659

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 16, 2023

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.1928G>A (p.G643D) alteration is located in exon 13 (coding exon 13) of the CPXM2 gene. This alteration results from a G to A substitution at nucleotide position 1928, causing the glycine (G) at amino acid position 643 to be replaced by an aspartic acid (D). 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

Uncertain

0.049

BayesDel_noAF

Uncertain

0.13

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.49

T;D

Eigen

Pathogenic

0.85

Eigen_PC

Pathogenic

0.76

FATHMM_MKL

Uncertain

0.94

LIST_S2

Pathogenic

1.0

D;D

M_CAP

Benign

0.084

MetaRNN

Pathogenic

0.84

D;D

MetaSVM

Benign

-0.66

MutationAssessor

Pathogenic

3.9

.;H

PhyloP100

7.8

PrimateAI

Pathogenic

0.89

PROVEAN

Pathogenic

-6.4

.;D

REVEL

Uncertain

0.56

Sift

Pathogenic

0.0

.;D

Sift4G

Uncertain

0.0050

D;D

Polyphen

1.0

.;D

Vest4

0.98

MutPred

0.85

.;Loss of MoRF binding (P = 0.0399);

MVP

0.67

MPC

0.87

ClinPred

0.99

GERP RS

4.3

Varity_R

0.92

gMVP

0.94

Mutation Taster

=34/66

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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10-123754752-C-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over