Genetic Variant AQP12A:p.Thr145Ile (chr2-240692384-C-T) – ACMG Classification: Likely_benign (-1 pts)

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 0P and 1B. BP4

The NM_198998.3(AQP12A):c.434C>T(p.Thr145Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000193 in 144,818 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00019 ( 0 hom., cov: 28)

Exomes 𝑓: 0.000011 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

AQP12A
NM_198998.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.70

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 Likely_benign. Variant got -1 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.29388922).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AQP12A	NM_198998.3 link	c.434C>T	p.Thr145Ile	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.434C>T	p.Thr145Ile	missense_variant	Exon 2 of 4	1	NM_198998.3	ENSP00000337144.4		Q8IXF9

Frequencies

GnomAD3 genomes

AF:

0.000193

AC:

AN:

144742

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000695

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000144

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.0000110

AC:

AN:

1368238

Hom.:

Cov.:

AF XY:

0.0000104

AC XY:

AN XY:

674818

show subpopulations

Gnomad4 AFR exome

AF:

0.000440

Gnomad4 AMR exome

AF:

0.0000334

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:

0.00

Gnomad4 OTH exome

AF:

0.0000177

GnomAD4 genome

AF:

0.000193

AC:

AN:

144818

Hom.:

Cov.:

AF XY:

0.000255

AC XY:

AN XY:

70488

show subpopulations

Gnomad4 AFR

AF:

0.000693

Gnomad4 AMR

AF:

0.000143

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000253

Hom.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 14, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.434C>T (p.T145I) alteration is located in exon 2 (coding exon 2) of the AQP12A gene. This alteration results from a C to T substitution at nucleotide position 434, causing the threonine (T) at amino acid position 145 to be replaced by an isoleucine (I). 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

0.32

BayesDel_addAF

Uncertain

0.013

BayesDel_noAF

Benign

-0.22

CADD

Benign

DANN

Benign

0.86

DEOGEN2

Benign

0.32

T;.

Eigen

Benign

-0.66

Eigen_PC

Benign

-0.71

FATHMM_MKL

Benign

0.037

LIST_S2

Benign

0.75

T;T

M_CAP

Benign

0.027

MetaRNN

Benign

0.29

T;T

MetaSVM

Benign

-0.38

MutationAssessor

Benign

1.4

L;.

PrimateAI

Uncertain

0.74

PROVEAN

Uncertain

-2.8

D;N

REVEL

Uncertain

0.30

Sift

Benign

0.041

D;D

Sift4G

Benign

0.12

T;T

Polyphen

0.10

B;.

Vest4

0.39

MVP

0.67

MPC

0.50

ClinPred

0.65

GERP RS

2.5

Varity_R

0.14

gMVP

0.51

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