Variant 15-48201415-A-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001145668.2(CTXN2):c.115A>G(p.Ile39Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000362 in 1,551,418 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00038 ( 0 hom. )

Consequence

CTXN2
NM_001145668.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.18

Variant links:

Genes affected

CTXN2 (HGNC:31109): (cortexin 2) Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

CTXN2 links:

(HGNC:):

links:

SLC12A1 (HGNC:10910): (solute carrier family 12 member 1) This gene encodes a kidney-specific sodium-potassium-chloride cotransporter that is expressed on the luminal membrane of renal epithelial cells of the thick ascending limb of Henle's loop and the macula densa. It plays a key role in concentrating urine and accounts for most of the NaCl resorption. It is sensitive to such diuretics as furosemide and bumetanide. Some Bartter-like syndromes result from defects in this gene. Alternative splicing results in multiple transcript variants encoding distinct isoforms. Additional splice variants have been described but their biological validity in humans has not been experimentally proven.[provided by RefSeq, May 2010]

SLC12A1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.014050335).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CTXN2	NM_001145668.2 linkuse as main transcript	c.115A>G	p.Ile39Val	missense_variant	2/2	ENST00000417307.3	NP_001139140.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CTXN2	ENST00000417307.3 linkuse as main transcript	c.115A>G	p.Ile39Val	missense_variant	2/2	1	NM_001145668.2	ENSP00000406145	P1
	ENST00000559875.1 linkuse as main transcript	n.270T>C		non_coding_transcript_exon_variant	1/2	2

Frequencies

GnomAD3 genomes

AF:

0.000204

AC:

AN:

152188

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

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:

0.000338

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000228

AC:

AN:

153802

Hom.:

AF XY:

0.000159

AC XY:

AN XY:

81602

show subpopulations

Gnomad AFR exome

AF:

0.000126

Gnomad AMR exome

AF:

0.000405

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:

0.000404

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000379

AC:

530

AN:

1399114

Hom.:

Cov.:

AF XY:

0.000361

AC XY:

249

AN XY:

690080

show subpopulations

Gnomad4 AFR exome

AF:

0.0000633

Gnomad4 AMR exome

AF:

0.000448

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000203

Gnomad4 NFE exome

AF:

0.000454

Gnomad4 OTH exome

AF:

0.000362

GnomAD4 genome

AF:

0.000204

AC:

AN:

152304

Hom.:

Cov.:

AF XY:

0.000228

AC XY:

AN XY:

74468

show subpopulations

Gnomad4 AFR

AF:

0.000120

Gnomad4 AMR

AF:

0.000196

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000338

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000131

Hom.:

Bravo

AF:

0.000178

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ExAC

AF:

0.0000922

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

Jan 23, 2023

The c.115A>G (p.I39V) alteration is located in exon 2 (coding exon 1) of the CTXN2 gene. This alteration results from a A to G substitution at nucleotide position 115, causing the isoleucine (I) at amino acid position 39 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

0.058

BayesDel_addAF

Benign

-0.48

BayesDel_noAF

Benign

-0.60

CADD

Benign

DANN

Benign

0.87

DEOGEN2

Benign

0.0055

T;T;T;T

Eigen

Benign

-0.30

Eigen_PC

Benign

-0.13

FATHMM_MKL

Benign

0.72

LIST_S2

Uncertain

0.87

.;.;.;D

M_CAP

Benign

0.0028

MetaRNN

Benign

0.014

T;T;T;T

MetaSVM

Benign

-1.1

MutationTaster

Benign

0.89

D;D

PrimateAI

Uncertain

0.63

PROVEAN

Benign

-0.37

.;.;N;.

REVEL

Benign

0.058

Sift

Benign

0.64

.;.;T;.

Sift4G

Benign

0.85

.;.;T;.

Polyphen

0.0

B;B;B;B

Vest4

0.093

MVP

0.44

ClinPred

0.046

GERP RS

3.5

Varity_R

0.040

gMVP

0.71

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

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