rs104894338

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PM1PM2PM5PP3_StrongPP5_Moderate

The NM_000486.6(AQP2):c.299G>T(p.Gly100Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000249 in 1,606,618 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 (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G100R) has been classified as Likely pathogenic.

Frequency

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

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

AQP2
NM_000486.6 missense

Scores

Clinical Significance

Pathogenic criteria provided, single submitter P:2

Conservation

PhyloP100: 8.00

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:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 12 ACMG points.

PM1

In a transmembrane_region Helical (size 21) in uniprot entity AQP2_HUMAN there are 4 pathogenic changes around while only 0 benign (100%) in NM_000486.6

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr12-49951128-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 1319413.We mark this variant Likely_pathogenic, oryginal submissions are: {Pathogenic=1, Uncertain_significance=1}.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.992

PP5

Variant 12-49951129-G-T is Pathogenic according to our data. Variant chr12-49951129-G-T is described in ClinVar as [Pathogenic]. Clinvar id is 17843.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
AQP2	NM_000486.6 linkuse as main transcript	c.299G>T	p.Gly100Val	missense_variant	1/4	ENST00000199280.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
AQP2	ENST00000199280.4 linkuse as main transcript	c.299G>T	p.Gly100Val	missense_variant	1/4	1	NM_000486.6	P1
AQP2	ENST00000550862.1 linkuse as main transcript	c.299G>T	p.Gly100Val	missense_variant	1/3	5
AQP2	ENST00000551526.5 linkuse as main transcript	c.299G>T	p.Gly100Val	missense_variant, NMD_transcript_variant	1/6	5

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152254

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000192

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:

0.00000406

AC:

AN:

246204

Hom.:

AF XY:

0.00000749

AC XY:

AN XY:

133494

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000546

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:

0.00000206

AC:

AN:

1454364

Hom.:

Cov.:

AF XY:

0.00000415

AC XY:

AN XY:

722250

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000271

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152254

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74390

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000192

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000729

Hom.:

Bravo

AF:

0.00000756

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:2

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Invitae

Jul 09, 2023

For these reasons, this variant has been classified as Pathogenic. This sequence change replaces glycine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 100 of the AQP2 protein (p.Gly100Val). This variant is present in population databases (rs104894338, gnomAD 0.01%). This missense change has been observed in individuals with autosomal recessive nephrogenic diabetes insipidus (PMID: 12050236). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 17843). 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 expected to disrupt AQP2 protein function. Experimental studies have shown that this missense change affects AQP2 function (PMID: 12050236). -

Diabetes insipidus, nephrogenic, autosomal

Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Jun 01, 2002

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.98

BayesDel_addAF

Pathogenic

0.42

BayesDel_noAF

Pathogenic

0.53

Cadd

Pathogenic

Dann

Uncertain

1.0

DEOGEN2

Pathogenic

0.98

D;D

Eigen

Pathogenic

0.97

Eigen_PC

Pathogenic

0.80

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.97

D;D

M_CAP

Pathogenic

0.45

MetaRNN

Pathogenic

0.99

D;D

MetaSVM

Pathogenic

1.1

MutationAssessor

Pathogenic

4.3

H;.

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.66

PROVEAN

Pathogenic

-7.8

D;D

REVEL

Pathogenic

0.92

Sift

Uncertain

0.0010

D;D

Sift4G

Pathogenic

0.0010

D;D

Polyphen

1.0

D;.

Vest4

0.98

MutPred

0.94

Loss of catalytic residue at A99 (P = 0.1888);Loss of catalytic residue at A99 (P = 0.1888);

MVP

0.99

MPC

1.6

ClinPred

1.0

GERP RS

4.7

Varity_R

0.98

gMVP

0.94

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