rs104894334

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM1PP3_ModeratePP5_Moderate

The NM_000486.6(AQP2):c.439G>A(p.Ala147Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000355 in 1,605,318 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★).

Frequency

Genomes: 𝑓 0.000072 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000032 ( 0 hom. )

Consequence

AQP2
NM_000486.6 missense

Scores

Clinical Significance

Pathogenic criteria provided, single submitter P:2O:1

Conservation

PhyloP100: 10.0

Variant links:

Genes affected

AQP2 (HGNC:634): (aquaporin 2) This gene encodes a water channel protein located in the kidney collecting tubule. It belongs to the MIP/aquaporin family, some members of which are clustered together on chromosome 12q13. Mutations in this gene have been linked to autosomal dominant and recessive forms of nephrogenic diabetes insipidus. [provided by RefSeq, Oct 2008]

AQP2 links:

AQP5-AS1 (HGNC:55474): (AQP5 and AQP2 antisense RNA 2)

AQP5-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

PM1

In a chain Aquaporin-2 (size 270) in uniprot entity AQP2_HUMAN there are 44 pathogenic changes around while only 9 benign (83%) in NM_000486.6

PP3

MetaRNN computational evidence supports a deleterious effect, 0.902

PP5

Variant 12-49954233-G-A is Pathogenic according to our data. Variant chr12-49954233-G-A is described in ClinVar as [Pathogenic]. Clinvar id is 17832.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
AQP2	NM_000486.6 linkuse as main transcript	c.439G>A	p.Ala147Thr	missense_variant	2/4	ENST00000199280.4
AQP5-AS1	NR_110591.1 linkuse as main transcript	n.118-2145C>T		intron_variant, non_coding_transcript_variant
AQP5-AS1	NR_110590.1 linkuse as main transcript	n.372C>T		non_coding_transcript_exon_variant	2/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
AQP2	ENST00000199280.4 linkuse as main transcript	c.439G>A	p.Ala147Thr	missense_variant	2/4	1	NM_000486.6	P1
AQP5-AS1	ENST00000550530.1 linkuse as main transcript	n.118-2145C>T		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes

AF:

0.0000723

AC:

AN:

152162

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000530

AC:

AN:

245056

Hom.:

AF XY:

0.0000601

AC XY:

AN XY:

133088

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000969

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000317

AC:

AN:

1453156

Hom.:

Cov.:

AF XY:

0.0000401

AC XY:

AN XY:

723292

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000504

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000369

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000723

AC:

AN:

152162

Hom.:

Cov.:

AF XY:

0.0000942

AC XY:

AN XY:

74322

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000845

Hom.:

Bravo

AF:

0.0000604

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000659

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:2Other:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Invitae

Nov 17, 2023

This sequence change replaces alanine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 147 of the AQP2 protein (p.Ala147Thr). This variant is present in population databases (rs104894334, gnomAD 0.01%). This missense change has been observed in individuals with autosomal recessive nephrogenic diabetes insipidus (PMID: 9048343, 10770218, 22644838). ClinVar contains an entry for this variant (Variation ID: 17832). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt AQP2 protein function with a negative predictive value of 80%. Experimental studies have shown that this missense change affects AQP2 function (PMID: 9048343, 9593782, 10564236, 10574954). For these reasons, this variant has been classified as Pathogenic. -

Diabetes insipidus, nephrogenic, autosomal

Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Feb 01, 1997

- -

Nephrogenic diabetes insipidus

Other:1

not provided, no classification provided

clinical testing

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Oct 02, 2015

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.56

BayesDel_addAF

Pathogenic

0.30

BayesDel_noAF

Pathogenic

0.41

Cadd

Pathogenic

Dann

Pathogenic

1.0

DEOGEN2

Pathogenic

0.91

D;D

Eigen

Pathogenic

0.78

Eigen_PC

Pathogenic

0.72

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.98

D;D

M_CAP

Pathogenic

0.30

MetaRNN

Pathogenic

0.90

D;D

MetaSVM

Pathogenic

0.82

MutationAssessor

Pathogenic

3.2

M;.

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.62

PROVEAN

Uncertain

-3.4

D;D

REVEL

Pathogenic

0.84

Sift

Uncertain

0.0010

D;D

Sift4G

Uncertain

0.0020

D;D

Polyphen

0.97

D;.

Vest4

0.86

MVP

0.96

MPC

1.3

ClinPred

0.94

GERP RS

4.7

Varity_R

0.89

gMVP

0.67

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