21-44418501-G-T

Variant names:

• chr21-44418501-G-T
• NM_003307.4:c.3407G>T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_003307.4(TRPM2):​c.3407G>T​(p.Arg1136Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,796 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1136Q) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: TRPM2 NM_003307.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.807

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

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.1049577).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TRPM2	NM_003307.4	c.3407G>T	p.Arg1136Leu	missense_variant	Exon 22 of 32	ENST00000397928.6	NP_003298.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TRPM2	ENST00000397928.6	c.3407G>T	p.Arg1136Leu	missense_variant	Exon 22 of 32	1	NM_003307.4	ENSP00000381023.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461796 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 727198

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: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.070
BayesDel_addAF	Benign	-0.22	T
BayesDel_noAF	Benign	-0.56
CADD	Benign	5.1
DANN	Benign	0.71
DEOGEN2	Benign	0.21	T;T;.;.
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.60	D
LIST_S2	Benign	0.34	.;T;T;T
M_CAP	Benign	0.0053	T
MetaRNN	Benign	0.10	T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.55	N;N;.;.
PrimateAI	Benign	0.34	T
PROVEAN	Benign	-0.24	N;N;N;N
REVEL	Benign	0.039
Sift	Benign	0.39	T;T;T;T
Sift4G	Benign	0.69	T;T;T;T
Polyphen		0.0010	B;B;B;.
Vest4		0.16
MutPred		0.44		Loss of MoRF binding (P = 0.0275);Loss of MoRF binding (P = 0.0275);Loss of MoRF binding (P = 0.0275);.;
MVP		0.26
MPC		0.17
ClinPred		0.067	T
GERP RS		-0.68
Varity_R		0.13
gMVP		0.24

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr21-45838384;