Variant chr9-33443781-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_004925.5(AQP3):c.220G>A(p.Ala74Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,664 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

AQP3
NM_004925.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.24

Variant links:

Genes affected

AQP3 (HGNC:636): (aquaporin 3 (Gill blood group)) This gene encodes the water channel protein aquaporin 3. Aquaporins are a family of small integral membrane proteins related to the major intrinsic protein, also known as aquaporin 0. Aquaporin 3 is localized at the basal lateral membranes of collecting duct cells in the kidney. In addition to its water channel function, aquaporin 3 has been found to facilitate the transport of nonionic small solutes such as urea and glycerol, but to a smaller degree. It has been suggested that water channels can be functionally heterogeneous and possess water and solute permeation mechanisms. Alternative splicing of this gene results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Dec 2015]

AQP3 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.28854018).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
AQP3	NM_004925.5 linkuse as main transcript	c.220G>A	p.Ala74Thr	missense_variant	2/6	ENST00000297991.6
AQP3	NM_001318144.2 linkuse as main transcript	c.220G>A	p.Ala74Thr	missense_variant	2/5
AQP3	XM_047423348.1 linkuse as main transcript	c.220G>A	p.Ala74Thr	missense_variant	2/4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
AQP3	ENST00000297991.6 linkuse as main transcript	c.220G>A	p.Ala74Thr	missense_variant	2/6	1	NM_004925.5	P1	Q92482-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000399

AC:

AN:

250894

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135696

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000882

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000205

AC:

AN:

1461664

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727128

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:

0.00000270

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

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

Jul 09, 2021

The c.220G>A (p.A74T) alteration is located in exon 2 (coding exon 2) of the AQP3 gene. This alteration results from a G to A substitution at nucleotide position 220, causing the alanine (A) at amino acid position 74 to be replaced by a threonine (T). 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

0.24

BayesDel_addAF

Benign

-0.17

BayesDel_noAF

Benign

-0.48

CADD

Benign

DANN

Benign

0.96

DEOGEN2

Uncertain

0.68

D;.

Eigen

Benign

-0.23

Eigen_PC

Benign

-0.17

FATHMM_MKL

Benign

0.66

LIST_S2

Uncertain

0.93

D;D

M_CAP

Benign

0.019

MetaRNN

Benign

0.29

T;T

MetaSVM

Benign

-0.98

MutationAssessor

Benign

1.7

L;.

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.60

PROVEAN

Benign

-1.8

N;.

REVEL

Benign

0.18

Sift

Benign

0.29

T;.

Sift4G

Benign

0.36

T;.

Polyphen

0.89

P;.

Vest4

0.62

MutPred

0.58

Gain of sheet (P = 0.1208);Gain of sheet (P = 0.1208);

MVP

0.26

MPC

0.86

ClinPred

0.43

GERP RS

4.8

Varity_R

0.24

gMVP

0.85

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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