rs869312176

chr15-31066093-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3 PP5

The NM_001252024.2(TRPM1):c.773T>C(p.Leu258Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,772 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (no stars).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: TRPM1 NM_001252024.2 missense
• Clinical Significance: Likely pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 9.31

Genes affected

TRPM1 (HGNC:7146): (transient receptor potential cation channel subfamily M member 1) This gene encodes a member of the transient receptor potential melastatin subfamily of transient receptor potential ion channels. The encoded protein is a calcium permeable cation channel that is expressed in melanocytes and may play a role in melanin synthesis. Specific mutations in this gene are the cause autosomal recessive complete congenital stationary night blindness-1C. The expression of this protein is inversely correlated with melanoma aggressiveness and as such it is used as a prognostic marker for melanoma metastasis. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Oct 2011]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.83
• PP5: Variant 15-31066093-A-G is Pathogenic according to our data. Variant chr15-31066093-A-G is described in ClinVar as [Likely_pathogenic]. Clinvar id is 224740.Status of the report is no_assertion_criteria_provided, 0 stars. Variant chr15-31066093-A-G is described in Lovd as [Likely_pathogenic]. Variant chr15-31066093-A-G is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TRPM1	NM_001252024.2	c.773T>C	p.Leu258Pro	missense_variant	7/28	ENST00000256552.11
TRPM1	NM_001252020.2	c.824T>C	p.Leu275Pro	missense_variant	6/27
TRPM1	NM_002420.6	c.707T>C	p.Leu236Pro	missense_variant	6/27

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TRPM1	ENST00000256552.11	c.773T>C	p.Leu258Pro	missense_variant	7/28	1	NM_001252024.2	P4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000401 AC: 1 AN: 249444 Hom.: 0 AF XY: 0.00000739 AC XY: 1 AN XY: 135338

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000327

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461772 Hom.: 0 Cov.: 32 AF XY: 0.00000413 AC XY: 3 AN XY: 727184

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: 0.0000348

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Congenital stationary night blindness 1C Pathogenic:1

Likely pathogenic, no assertion criteria provided

clinical testing

Centre for Genomic Medicine, Manchester, Central Manchester University Hospitals

Dec 30, 2014

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.96
BayesDel_addAF	Pathogenic	0.28	D
BayesDel_noAF	Pathogenic	0.26
Cadd	Uncertain	25
Dann	Uncertain	1.0
DEOGEN2	Uncertain	0.45	T;.;.;T;T
Eigen	Uncertain	0.58
Eigen_PC	Uncertain	0.61
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Uncertain	0.95	D;D;D;D;D
M_CAP	Uncertain	0.19	D
MetaRNN	Pathogenic	0.83	D;D;D;D;D
MetaSVM	Uncertain	0.12	D
MutationAssessor	Uncertain	2.8	M;.;.;.;.
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Pathogenic	0.88	D
PROVEAN	Uncertain	-4.2	D;D;D;.;D
REVEL	Pathogenic	0.71
Sift	Benign	0.039	D;D;D;.;T
Sift4G	Uncertain	0.038	D;D;D;D;T
Polyphen		0.12	B;.;.;.;.
Vest4		0.87
MutPred		0.55		Gain of disorder (P = 0.0102);.;.;.;Gain of disorder (P = 0.0102);
MVP		0.72
MPC		0.98
ClinPred		0.99	D
GERP RS		5.0
Varity_R		0.91
gMVP		0.84

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

Other links and lift over

dbSNP: rs869312176; hg19: chr15-31358296;