Genetic Variant AQP12A:p.Thr44Met (chr2-240692081-C-T) – ACMG Classification: Benign (-10 pts)

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP4_StrongBP6_ModerateBS2

The NM_198998.3(AQP12A):c.131C>T(p.Thr44Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000132 in 1,436,376 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: not found (cov: 30)

Exomes 𝑓: 0.000013 ( 4 hom. )

Consequence

AQP12A
NM_198998.3 missense

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 0.0120

Variant links:

Genes affected

AQP12A (HGNC:19941): (aquaporin 12A) Predicted to enable channel activity. Predicted to be involved in transmembrane transport. Predicted to be integral component of membrane. Predicted to be active in cytoplasm. [provided by Alliance of Genome Resources, Apr 2022]

AQP12A links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -10 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.018270016).

BP6

Variant 2-240692081-C-T is Benign according to our data. Variant chr2-240692081-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 3887223.Status of the report is criteria_provided_single_submitter, 1 stars.

BS2

High Homozygotes in GnomAdExome4 at 4 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AQP12A	NM_198998.3 link	c.131C>T	p.Thr44Met	missense_variant	Exon 2 of 4	ENST00000337801.9	NP_945349.1	Q8IXF9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
AQP12A	ENST00000337801.9 link	c.131C>T	p.Thr44Met	missense_variant	Exon 2 of 4	1	NM_198998.3	ENSP00000337144.4		Q8IXF9

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000209

AC:

AN:

239380

Hom.:

AF XY:

0.0000230

AC XY:

AN XY:

130586

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.000101

Gnomad EAS exome

AF:

0.0000578

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000180

Gnomad OTH exome

AF:

0.000168

GnomAD4 exome

AF:

0.0000132

AC:

AN:

1436376

Hom.:

Cov.:

AF XY:

0.0000154

AC XY:

AN XY:

714996

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000534

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000145

Gnomad4 OTH exome

AF:

0.0000169

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000284

Hom.:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000352

AC:

ExAC

AF:

0.0000338

AC:

EpiCase

AF:

0.0000549

EpiControl

AF:

0.00

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Benign:1

Feb 28, 2025

Ambry Genetics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.068

BayesDel_addAF

Benign

-0.48

BayesDel_noAF

Benign

-0.75

CADD

Benign

0.066

DANN

Benign

0.82

DEOGEN2

Benign

0.042

T;.

Eigen

Benign

-1.7

Eigen_PC

Benign

-1.7

FATHMM_MKL

Benign

0.0056

LIST_S2

Benign

0.52

T;T

M_CAP

Benign

0.0020

MetaRNN

Benign

0.018

T;T

MetaSVM

Benign

-0.92

MutationAssessor

Benign

-0.84

N;.

PrimateAI

Uncertain

0.62

PROVEAN

Benign

0.43

N;N

REVEL

Benign

0.022

Sift

Benign

0.64

T;T

Sift4G

Benign

1.0

T;T

Polyphen

0.0060

B;.

Vest4

0.049

MVP

0.055

MPC

0.36

ClinPred

0.033

GERP RS

-2.5

Varity_R

0.012

gMVP

0.47

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