15-31160944-G-T

Variant names:

• chr15-31160944-G-T
• rs75638145
• ENST00000558445.6:c.16C>A

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The ENST00000558445.6(TRPM1):​c.16C>A​(p.Arg6Arg) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000723 in 1,383,148 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 7.2e-7 (0 hom.)
• Consequence: TRPM1 ENST00000558445.6 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.33
• Publications: 9 publications found

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]

TRPM1 Gene-Disease associations (from GenCC):

• congenital stationary night blindness 1C

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae)
• TRPM1-related retinopathy

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• congenital stationary night blindness

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.54).
• BP7: Synonymous conserved (PhyloP=2.33 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TRPM1	NM_001252020.2	c.16C>A	p.Arg6Arg	synonymous_variant	Exon 1 of 27		NP_001238949.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TRPM1	ENST00000558445.6	c.16C>A	p.Arg6Arg	synonymous_variant	Exon 1 of 27	1		ENSP00000452946.2
TRPM1	ENST00000559177.6	c.16C>A	p.Arg6Arg	synonymous_variant	Exon 1 of 8	5		ENSP00000453477.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.00000781 AC: 1 AN: 128012 AF XY: 0.00

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 FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 7.23e-7 AC: 1 AN: 1383148 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 682482

African (AFR) AF: 0.00 AC: 0 AN: 31584

American (AMR) AF: 0.00 AC: 0 AN: 35692

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25178

East Asian (EAS) AF: 0.00 AC: 0 AN: 35734

South Asian (SAS) AF: 0.0000126 AC: 1 AN: 79226

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 33466

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5688

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1078694

Other (OTH) AF: 0.00 AC: 0 AN: 57886

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.54
CADD	Benign	3.1
DANN	Benign	0.71
PhyloP100		2.3
PromoterAI		-0.022	Neutral

Splicing

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

Other links and lift over

dbSNP: rs75638145; hg19: chr15-31453147;