rs797045204

Variant names:

• chr9-74782398-T-C
• rs797045204
• NM_017662.5:c.3173A>G

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP5

The NM_017662.5(TRPM6):​c.3173A>G​(p.Tyr1058Cys) variant causes a missense change. The variant allele was found at a frequency of 0.00000342 in 1,461,804 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000034 (0 hom.)
• Consequence: TRPM6 NM_017662.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter P:1 U:1
• Conservation: PhyloP100: 6.23

Genes affected

TRPM6 (HGNC:17995): (transient receptor potential cation channel subfamily M member 6) This gene is predominantly expressed in the kidney and colon, and encodes a protein containing an ion channel domain and a protein kinase domain. It is crucial for magnesium homeostasis, and plays an essential role in epithelial magnesium transport and in the active magnesium absorption in the gut and kidney. Mutations in this gene are associated with hypomagnesemia with secondary hypocalcemia. Alternatively spliced transcript variants encoding different isoforms have been noted for this gene. [provided by RefSeq, Apr 2010]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 9-74782398-T-C is Pathogenic according to our data. Variant chr9-74782398-T-C is described in ClinVar as [Pathogenic]. Clinvar id is 210059.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TRPM6	NM_017662.5	c.3173A>G	p.Tyr1058Cys	missense_variant	Exon 23 of 39	ENST00000360774.6	NP_060132.3
TRPM6	NM_001177310.2	c.3158A>G	p.Tyr1053Cys	missense_variant	Exon 23 of 39		NP_001170781.1
TRPM6	NM_001177311.2	c.3158A>G	p.Tyr1053Cys	missense_variant	Exon 23 of 39		NP_001170782.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TRPM6	ENST00000360774.6	c.3173A>G	p.Tyr1058Cys	missense_variant	Exon 23 of 39	1	NM_017662.5	ENSP00000354006.1
TRPM6	ENST00000361255.7	c.3158A>G	p.Tyr1053Cys	missense_variant	Exon 23 of 39	1		ENSP00000354962.3
TRPM6	ENST00000449912.6	c.3158A>G	p.Tyr1053Cys	missense_variant	Exon 23 of 39	1		ENSP00000396672.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000342 AC: 5 AN: 1461804 Hom.: 0 Cov.: 31 AF XY: 0.00000550 AC XY: 4 AN XY: 727204

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: 0.0000580

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000329 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Pathogenic:1 Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Intestinal hypomagnesemia 1 Pathogenic:1

Apr 01, 2014

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

Inborn genetic diseases Uncertain:1

Mar 01, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.3173A>G (p.Y1058C) alteration is located in exon 23 (coding exon 23) of the TRPM6 gene. This alteration results from a A to G substitution at nucleotide position 3173, causing the tyrosine (Y) at amino acid position 1058 to be replaced by a cysteine (C). 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	Pathogenic	0.90
BayesDel_addAF	Pathogenic	0.26	D
BayesDel_noAF	Uncertain	0.13
CADD	Uncertain	26
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.90	.;.;D
Eigen	Uncertain	0.59
Eigen_PC	Uncertain	0.52
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Pathogenic	0.98	D;D;D
M_CAP	Benign	0.051	D
MetaRNN	Uncertain	0.52	D;D;D
MetaSVM	Benign	-0.41	T
MutationAssessor	Uncertain	2.8	.;.;M
PrimateAI	Pathogenic	0.91	D
PROVEAN	Pathogenic	-5.7	D;D;D
REVEL	Uncertain	0.38
Sift	Benign	0.13	T;T;T
Sift4G	Uncertain	0.014	D;D;D
Polyphen		1.0	D;.;D
Vest4		0.61
MutPred		0.51		.;.;Loss of catalytic residue at Y1058 (P = 0.2981);
MVP		0.71
MPC		1.0
ClinPred		0.99	D
GERP RS		4.9
Varity_R		0.57
gMVP		0.90

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs797045204; hg19: chr9-77397314;