rs748187859

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_017636.4(TRPM4):​c.1603G>A​(p.Glu535Lys) variant causes a missense change. The variant allele was found at a frequency of 0.0000144 in 1,592,116 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. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000013 ( 0 hom. )

Consequence

TRPM4
NM_017636.4 missense

Scores

1
18

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:4

Conservation

PhyloP100: 3.67
Variant links:
Genes affected
TRPM4 (HGNC:17993): (transient receptor potential cation channel subfamily M member 4) The protein encoded by this gene is a calcium-activated nonselective ion channel that mediates transport of monovalent cations across membranes, thereby depolarizing the membrane. The activity of the encoded protein increases with increasing intracellular calcium concentration, but this channel does not transport calcium. [provided by RefSeq, Mar 2016]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.22677878).
BS2
High AC in GnomAd4 at 5 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
TRPM4NM_017636.4 linkc.1603G>A p.Glu535Lys missense_variant Exon 11 of 25 ENST00000252826.10 NP_060106.2 Q8TD43-1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
TRPM4ENST00000252826.10 linkc.1603G>A p.Glu535Lys missense_variant Exon 11 of 25 1 NM_017636.4 ENSP00000252826.4 Q8TD43-1

Frequencies

GnomAD3 genomes
AF:
0.0000329
AC:
5
AN:
152200
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000723
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:
0.0000294
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.00000923
AC:
2
AN:
216774
Hom.:
0
AF XY:
0.00000839
AC XY:
1
AN XY:
119254
show subpopulations
Gnomad AFR exome
AF:
0.0000767
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000104
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000125
AC:
18
AN:
1439916
Hom.:
0
Cov.:
33
AF XY:
0.0000140
AC XY:
10
AN XY:
714034
show subpopulations
Gnomad4 AFR exome
AF:
0.0000605
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000120
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000127
Gnomad4 OTH exome
AF:
0.0000169
GnomAD4 genome
AF:
0.0000329
AC:
5
AN:
152200
Hom.:
0
Cov.:
32
AF XY:
0.0000403
AC XY:
3
AN XY:
74374
show subpopulations
Gnomad4 AFR
AF:
0.0000723
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000294
Gnomad4 OTH
AF:
0.00
Bravo
AF:
0.0000189
ExAC
AF:
0.0000168
AC:
2

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:4
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Uncertain:1
Jul 06, 2023
GeneDx
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Hypertrophic cardiomyopathy Uncertain:1
Apr 30, 2017
Center for Human Genetics, University of Leuven
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Progressive familial heart block type IB Uncertain:1
Dec 04, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This sequence change replaces glutamic acid, which is acidic and polar, with lysine, which is basic and polar, at codon 535 of the TRPM4 protein (p.Glu535Lys). This variant is present in population databases (rs748187859, gnomAD 0.009%). This variant has not been reported in the literature in individuals affected with TRPM4-related conditions. ClinVar contains an entry for this variant (Variation ID: 427975). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Cardiovascular phenotype Uncertain:1
Apr 21, 2024
Ambry Genetics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

The p.E535K variant (also known as c.1603G>A), located in coding exon 11 of the TRPM4 gene, results from a G to A substitution at nucleotide position 1603. The glutamic acid at codon 535 is replaced by lysine, an amino acid with similar properties. This amino acid position is well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.099
BayesDel_addAF
Benign
-0.18
T
BayesDel_noAF
Benign
-0.31
CADD
Benign
17
DANN
Benign
0.82
DEOGEN2
Benign
0.098
T;.
Eigen
Benign
-0.44
Eigen_PC
Benign
-0.42
FATHMM_MKL
Benign
0.73
D
LIST_S2
Benign
0.73
T;T
M_CAP
Uncertain
0.098
D
MetaRNN
Benign
0.23
T;T
MetaSVM
Benign
-0.93
T
MutationAssessor
Benign
1.1
L;L
PrimateAI
Benign
0.47
T
PROVEAN
Benign
-0.090
N;N
REVEL
Benign
0.24
Sift
Benign
0.87
T;T
Sift4G
Benign
1.0
T;T
Polyphen
0.60
P;P
Vest4
0.50
MutPred
0.46
Gain of ubiquitination at E535 (P = 0.0109);Gain of ubiquitination at E535 (P = 0.0109);
MVP
0.73
MPC
0.32
ClinPred
0.13
T
GERP RS
4.0
Varity_R
0.15
gMVP
0.25

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

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs748187859; hg19: chr19-49686174; API