Genetic Variant TRPM2:p.Ala1080Thr (chr21-44418018-G-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_003307.4(TRPM2):c.3238G>A(p.Ala1080Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000825 in 1,612,940 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000084 ( 0 hom. )

Consequence

TRPM2
NM_003307.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.09

Variant links:

Genes affected

TRPM2 (HGNC:12339): (transient receptor potential cation channel subfamily M member 2) The protein encoded by this gene forms a tetrameric cation channel that is permeable to calcium, sodium, and potassium and is regulated by free intracellular ADP-ribose. The encoded protein is activated by oxidative stress and confers susceptibility to cell death. Alternative splicing results in multiple transcript variants encoding distinct protein isoforms. Additional transcript variants of this gene have been described, but their full-length nature is not known. [provided by RefSeq, Feb 2016]

TRPM2 links:

TRPM2-AS (HGNC:50758): (TRPM2 antisense RNA)

TRPM2-AS links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TRPM2	NM_003307.4 link	c.3238G>A	p.Ala1080Thr	missense_variant	Exon 21 of 32	ENST00000397928.6	NP_003298.2	O94759-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TRPM2	ENST00000397928.6 link	c.3238G>A	p.Ala1080Thr	missense_variant	Exon 21 of 32	1	NM_003307.4	ENSP00000381023.1		O94759-1

Frequencies

GnomAD3 genomes

AF:

0.0000657

AC:

AN:

152170

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000103

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000108

AC:

AN:

250132

Hom.:

AF XY:

0.000126

AC XY:

AN XY:

135434

show subpopulations

Gnomad AFR exome

AF:

0.000123

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000109

Gnomad SAS exome

AF:

0.000229

Gnomad FIN exome

AF:

0.000286

Gnomad NFE exome

AF:

0.0000795

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.0000842

AC:

123

AN:

1460770

Hom.:

Cov.:

AF XY:

0.0000936

AC XY:

AN XY:

726714

show subpopulations

Gnomad4 AFR exome

AF:

0.0000896

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000252

Gnomad4 SAS exome

AF:

0.000174

Gnomad4 FIN exome

AF:

0.000420

Gnomad4 NFE exome

AF:

0.0000594

Gnomad4 OTH exome

AF:

0.0000828

GnomAD4 genome

AF:

0.0000657

AC:

AN:

152170

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74332

show subpopulations

Gnomad4 AFR

AF:

0.0000482

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000103

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000107

Hom.:

Bravo

AF:

0.0000604

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000741

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Oct 20, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.3238G>A (p.A1080T) alteration is located in exon 21 (coding exon 21) of the TRPM2 gene. This alteration results from a G to A substitution at nucleotide position 3238, causing the alanine (A) at amino acid position 1080 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

0.23

BayesDel_addAF

Benign

-0.22

BayesDel_noAF

Benign

-0.26

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.30

T;T;.;.

Eigen

Uncertain

0.30

Eigen_PC

Benign

0.15

FATHMM_MKL

Uncertain

0.85

LIST_S2

Benign

0.73

.;T;T;T

M_CAP

Benign

0.037

MetaRNN

Uncertain

0.43

T;T;T;T

MetaSVM

Benign

-0.71

MutationAssessor

Uncertain

2.7

M;M;.;.

PrimateAI

Benign

0.40

PROVEAN

Benign

-1.8

N;N;N;N

REVEL

Uncertain

0.30

Sift

Benign

0.046

D;D;D;D

Sift4G

Uncertain

0.029

D;D;D;D

Polyphen

1.0

D;D;D;.

Vest4

0.56

MVP

0.38

MPC

0.56

ClinPred

0.16

GERP RS

4.5

Varity_R

0.19

gMVP

0.68

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