2-233926551-C-T

Variant names:

• chr2-233926551-C-T
• rs776737159
• NM_024080.5:c.14C>T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_024080.5(TRPM8):​c.14C>T​(p.Ala5Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000124 in 1,613,882 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 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. A5E) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: TRPM8 NM_024080.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.0370
• Publications: 0 publications found

Genes affected

TRPM8 (HGNC:17961): (transient receptor potential cation channel subfamily M member 8) Predicted to enable ligand-gated calcium channel activity. Predicted to be involved in calcium ion transmembrane transport and positive regulation of cold-induced thermogenesis. Predicted to act upstream of or within several processes, including cellular calcium ion homeostasis; response to cold; and thermoception. Located in plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.062553376).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_024080.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TRPM8	NM_024080.5	MANE Select	c.14C>T	p.Ala5Val	missense	Exon 2 of 26	NP_076985.4
	TRPM8	NM_001397606.1		c.14C>T	p.Ala5Val	missense	Exon 2 of 22	NP_001384535.1
	TRPM8	NM_001397608.1		c.14C>T	p.Ala5Val	missense	Exon 2 of 23	NP_001384537.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TRPM8	ENST00000324695.9	TSL:1 MANE Select	c.14C>T	p.Ala5Val	missense	Exon 2 of 26	ENSP00000323926.4	Q7Z2W7-1
	TRPM8	ENST00000444298.5	TSL:1	n.14C>T		non_coding_transcript_exon	Exon 2 of 25	ENSP00000396745.1	F8WD55
	TRPM8	ENST00000433712.7	TSL:5	c.14C>T	p.Ala5Val	missense	Exon 2 of 24	ENSP00000404423.4

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152118 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

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 AF: 6.84e-7 AC: 1 AN: 1461764 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 727186

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 33476

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86254

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53418

Middle Eastern (MID) AF: 0.000173 AC: 1 AN: 5766

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111902

Other (OTH) AF: 0.00 AC: 0 AN: 60390

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152118 Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1 AN XY: 74310

African (AFR) AF: 0.0000241 AC: 1 AN: 41414

American (AMR) AF: 0.00 AC: 0 AN: 15278

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3466

East Asian (EAS) AF: 0.00 AC: 0 AN: 5172

South Asian (SAS) AF: 0.00 AC: 0 AN: 4824

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10620

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68024

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000756

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.15	T
BayesDel_noAF	Benign	-0.46
CADD	Benign	6.0
DANN	Benign	0.83
DEOGEN2	Benign	0.091	T
Eigen	Benign	-1.4
Eigen_PC	Benign	-1.3
FATHMM_MKL	Benign	0.012	N
LIST_S2	Benign	0.58	T
M_CAP	Benign	0.020	T
MetaRNN	Benign	0.063	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	-0.69	N
PhyloP100		-0.037
PrimateAI	Benign	0.40	T
PROVEAN	Benign	0.35	N
REVEL	Benign	0.040
Sift	Benign	0.24	T
Sift4G	Benign	1.0	T
Polyphen		0.010	B
Vest4		0.18
MutPred		0.34		Gain of sheet (P = 0.0016)
MVP		0.28
MPC		0.15
ClinPred		0.055	T
GERP RS		0.55
Varity_R		0.028
gMVP		0.41
Mutation Taster		=93/7	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.15		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs776737159; hg19: chr2-234835196;