chr10-123761971-G-C

Variant names:

• chr10-123761971-G-C
• rs778892334
• NM_198148.3:c.1678C>G

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP3

The NM_198148.3(CPXM2):​c.1678C>G​(p.Arg560Gly) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,550 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R560C) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: CPXM2 NM_198148.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.97
• Publications: 0 publications found

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]

ENSG00000231138 (HGNC:58377):

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.8

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CPXM2	NM_198148.3	c.1678C>G	p.Arg560Gly	missense_variant	Exon 11 of 14	ENST00000241305.4	NP_937791.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CPXM2	ENST00000241305.4	c.1678C>G	p.Arg560Gly	missense_variant	Exon 11 of 14	1	NM_198148.3	ENSP00000241305.3
CPXM2	ENST00000615851.4	c.166C>G	p.Arg56Gly	missense_variant	Exon 11 of 15	5		ENSP00000483180.1
CPXM2	ENST00000368854.7	n.1725C>G		non_coding_transcript_exon_variant	Exon 13 of 20	2
ENSG00000231138	ENST00000818156.1	n.142+685G>C		intron_variant	Intron 1 of 1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461550 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 727040

African (AFR) AF: 0.00 AC: 0 AN: 33476

American (AMR) AF: 0.00 AC: 0 AN: 44710

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26098

East Asian (EAS) AF: 0.00 AC: 0 AN: 39690

South Asian (SAS) AF: 0.00 AC: 0 AN: 86232

European-Finnish (FIN) AF: 0.0000187 AC: 1 AN: 53394

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111800

Other (OTH) AF: 0.00 AC: 0 AN: 60382

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.62
BayesDel_addAF	Pathogenic	0.16	D
BayesDel_noAF	Uncertain	0.0
CADD	Uncertain	25
DANN	Uncertain	0.99
DEOGEN2	Benign	0.020	T;T
Eigen	Uncertain	0.44
Eigen_PC	Uncertain	0.50
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.93	D;D
M_CAP	Benign	0.0084	T
MetaRNN	Pathogenic	0.80	D;D
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.69	.;N
PhyloP100		8.0
PrimateAI	Uncertain	0.77	T
PROVEAN	Uncertain	-2.9	.;D
REVEL	Uncertain	0.39
Sift	Benign	0.46	.;T
Sift4G	Benign	0.43	T;T
Polyphen		0.80	.;P
Vest4		0.83
MutPred		0.63		.;Loss of MoRF binding (P = 0.005);
MVP		0.39
MPC		0.75
ClinPred		0.99	D
GERP RS		5.3
Varity_R		0.58
gMVP		0.69
Mutation Taster		=20/80	disease causing

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

Other links and lift over

dbSNP: rs778892334; hg19: chr10-125521487;