13-46093976-A-T

Variant names:

• chr13-46093976-A-T
• rs2146882
• NM_001872.5:c.75-6156T>A

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_001872.5(CPB2):​c.75-6156T>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 31)
• Consequence: CPB2 NM_001872.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0180
• Publications: 4 publications found

Genes affected

CPB2 (HGNC:2300): (carboxypeptidase B2) Carboxypeptidases are enzymes that hydrolyze C-terminal peptide bonds. The carboxypeptidase family includes metallo-, serine, and cysteine carboxypeptidases. According to their substrate specificity, these enzymes are referred to as carboxypeptidase A (cleaving aliphatic residues) or carboxypeptidase B (cleaving basic amino residues). The protein encoded by this gene is activated by trypsin and acts on carboxypeptidase B substrates. After thrombin activation, the mature protein downregulates fibrinolysis. Polymorphisms have been described for this gene and its promoter region. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Jun 2013]

CPB2-AS1 (HGNC:39898): (CPB2 antisense RNA 1)

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.91).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001872.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CPB2	NM_001872.5	MANE Select	c.75-6156T>A		intron	N/A	NP_001863.3
	CPB2	NM_001278541.2		c.75-6156T>A		intron	N/A	NP_001265470.1
	CPB2-AS1	NR_046226.1		n.119-877A>T		intron	N/A

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CPB2	ENST00000181383.10	TSL:1 MANE Select	c.75-6156T>A		intron	N/A	ENSP00000181383.4
	CPB2	ENST00000439329.5	TSL:5	c.75-6156T>A		intron	N/A	ENSP00000400714.3
	CPB2	ENST00000674625.1		c.75-6156T>A		intron	N/A	ENSP00000502808.1

Frequencies

GnomAD3 genomes Cov.: 31

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.91
CADD	Benign	3.4
DANN	Benign	0.32
PhyloP100		0.018

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: rs2146882; hg19: chr13-46668111;