Variant 18-72542027-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_182511.4(CBLN2):c.134C>T(p.Ala45Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000251 in 1,593,906 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

CBLN2
NM_182511.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.09

Variant links:

Genes affected

CBLN2 (HGNC:1544): (cerebellin 2 precursor) Predicted to be involved in maintenance of synapse structure and spontaneous synaptic transmission. Predicted to act upstream of or within positive regulation of synapse assembly. Predicted to be located in extracellular space. Predicted to be active in glutamatergic synapse. [provided by Alliance of Genome Resources, Apr 2022]

CBLN2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.19198415).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CBLN2	NM_182511.4 link	c.134C>T	p.Ala45Val	missense_variant	3/5	ENST00000269503.9	NP_872317.1	Q8IUK8A0A024R380

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CBLN2	ENST00000269503.9 link	c.134C>T	p.Ala45Val	missense_variant	3/5	1	NM_182511.4	ENSP00000269503.4		Q8IUK8

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152110

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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

GnomAD3 exomes

AF:

0.00000895

AC:

AN:

223522

Hom.:

AF XY:

0.00000810

AC XY:

AN XY:

123526

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000610

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS 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:

0.00000208

AC:

AN:

1441796

Hom.:

Cov.:

AF XY:

0.00000139

AC XY:

AN XY:

717606

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000454

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.01e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152110

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74302

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

ExAC

AF:

0.00000831

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 25, 2024

The c.134C>T (p.A45V) alteration is located in exon 3 (coding exon 1) of the CBLN2 gene. This alteration results from a C to T substitution at nucleotide position 134, causing the alanine (A) at amino acid position 45 to be replaced by a valine (V). 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

0.082

BayesDel_addAF

Benign

-0.19

BayesDel_noAF

Benign

-0.34

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.020

T;T

Eigen

Benign

-0.20

Eigen_PC

Benign

-0.041

FATHMM_MKL

Benign

0.52

LIST_S2

Benign

0.61

.;T

M_CAP

Pathogenic

0.79

MetaRNN

Benign

0.19

T;T

MetaSVM

Benign

-0.54

MutationAssessor

Benign

0.0

N;N

PrimateAI

Pathogenic

0.87

PROVEAN

Benign

-0.13

.;N

REVEL

Benign

0.24

Sift

Benign

0.073

.;T

Sift4G

Benign

0.099

T;T

Polyphen

0.010

B;B

Vest4

0.090

MutPred

0.54

Loss of sheet (P = 0.0457);Loss of sheet (P = 0.0457);

MVP

0.81

MPC

1.1

ClinPred

0.19

GERP RS

3.3

Varity_R

0.099

gMVP

0.49

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.060

Details are displayed if max score is > 0.2

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over