Genetic Variant NM_001304.5:c.634C>G (chr17-30379614-C-G) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_001304.5(CPD):c.634C>G(p.Arg212Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000204 in 1,468,318 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: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000022 ( 0 hom. )

Consequence

CPD
NM_001304.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.42

Variant links:

Genes affected

CPD (HGNC:2301): (carboxypeptidase D) The metallocarboxypeptidase family of enzymes is divided into 2 subfamilies based on sequence similarities. The pancreatic carboxypeptidase-like and the regulatory B-type carboxypeptidase subfamilies. Carboxypeptidase D has been identified as a regulatory B-type carboxypeptidase. CPD is a homolog of duck gp180, a hepatitis B virus-binding protein. Transcript variants utilizing alternative polyadenylation signals exist for this gene. [provided by RefSeq, Jul 2008]

CPD links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.3526124).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CPD	NM_001304.5 link	c.634C>G	p.Arg212Gly	missense_variant	Exon 1 of 21	ENST00000225719.9	NP_001295.2	O75976-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CPD	ENST00000225719.9 link	c.634C>G	p.Arg212Gly	missense_variant	Exon 1 of 21	1	NM_001304.5	ENSP00000225719.4		O75976-1
CPD	ENST00000583275.1 link	n.-2C>G		upstream_gene_variant		2

Frequencies

GnomAD3 genomes

AF:

0.00000660

AC:

AN:

151556

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00

AC:

AN:

73852

AF XY:

0.00

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000220

AC:

AN:

1316762

Hom.:

Cov.:

AF XY:

0.0000231

AC XY:

AN XY:

650722

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

25066

American (AMR)

AF:

0.00

AC:

AN:

18800

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

20956

East Asian (EAS)

AF:

0.00

AC:

AN:

31446

South Asian (SAS)

AF:

0.00

AC:

AN:

70862

European-Finnish (FIN)

AF:

0.00

AC:

AN:

35530

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4478

European-Non Finnish (NFE)

AF:

0.0000265

AC:

AN:

1055582

Other (OTH)

AF:

0.0000185

AC:

AN:

54042

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.561

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00000660

AC:

AN:

151556

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74000

show subpopulations

African (AFR)

AF:

0.0000242

AC:

AN:

41304

American (AMR)

AF:

0.00

AC:

AN:

15206

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3464

East Asian (EAS)

AF:

0.00

AC:

AN:

5114

South Asian (SAS)

AF:

0.00

AC:

AN:

4782

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10558

Middle Eastern (MID)

AF:

0.00

AC:

AN:

314

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67816

Other (OTH)

AF:

0.00

AC:

AN:

2086

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 07, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.634C>G (p.R212G) alteration is located in exon 1 (coding exon 1) of the CPD gene. This alteration results from a C to G substitution at nucleotide position 634, causing the arginine (R) at amino acid position 212 to be replaced by a glycine (G). 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

0.12

BayesDel_addAF

Benign

-0.20

BayesDel_noAF

Benign

-0.53

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.015

Eigen

Benign

-0.11

Eigen_PC

Benign

-0.17

FATHMM_MKL

Benign

0.67

LIST_S2

Benign

0.81

M_CAP

Uncertain

0.086

MetaRNN

Benign

0.35

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.1

PhyloP100

1.4

PrimateAI

Pathogenic

0.85

PROVEAN

Benign

-1.1

REVEL

Benign

0.088

Sift

Uncertain

0.015

Sift4G

Benign

0.16

Polyphen

0.97

Vest4

0.35

MutPred

0.56

Loss of stability (P = 0.0779);

MVP

0.34

MPC

0.65

ClinPred

0.60

GERP RS

1.8

Varity_R

0.24

gMVP

0.67

Mutation Taster

=67/33

polymorphism

(source)

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

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NM_001304.5:c.634C>G

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over