NM_198148.3:c.1878G>A

Variant names:

• chr10-123757252-C-T
• rs537047960
• NM_198148.3:c.1878G>A

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_198148.3(CPXM2):​c.1878G>A​(p.Trp626*) variant causes a stop gained change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 33)
• Consequence: CPXM2 NM_198148.3 stop_gained
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.81
• 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]

ACMG classification

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

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_198148.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CPXM2	NM_198148.3	MANE Select	c.1878G>A	p.Trp626*	stop_gained	Exon 12 of 14	NP_937791.2	Q8N436

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CPXM2	ENST00000241305.4	TSL:1 MANE Select	c.1878G>A	p.Trp626*	stop_gained	Exon 12 of 14	ENSP00000241305.3	Q8N436
	CPXM2	ENST00000909350.1		c.1875G>A	p.Trp625*	stop_gained	Exon 12 of 14	ENSP00000579409.1
	CPXM2	ENST00000909348.1		c.1779G>A	p.Trp593*	stop_gained	Exon 11 of 13	ENSP00000579407.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

ExAC AF: 0.00000824 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.55	D
BayesDel_noAF	Pathogenic	0.66
CADD	Pathogenic	45
DANN	Uncertain	1.0
Eigen	Pathogenic	0.87
Eigen_PC	Pathogenic	0.72
FATHMM_MKL	Pathogenic	0.98	D
PhyloP100		7.8
Vest4		0.46
GERP RS		4.7
Mutation Taster		=15/185	disease causing (fs/PTC)

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: rs537047960; hg19: chr10-125516768;