rs746156917

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_017636.4(TRPM4):​c.3361C>A​(p.Leu1121Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,822 control chromosomes in the GnomAD database, with no homozygous occurrence. 13/22 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. L1121R) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 31)
Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

TRPM4
NM_017636.4 missense

Scores

5
13

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.633

Publications

0 publications found
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]
TRPM4 Gene-Disease associations (from GenCC):
  • erythrokeratodermia variabilis et progressiva 6
    Inheritance: AD Classification: STRONG, MODERATE, LIMITED Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
  • progressive familial heart block type IB
    Inheritance: AD Classification: STRONG, MODERATE Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine
  • erythrokeratodermia variabilis
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • progressive familial heart block
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • Brugada syndrome
    Inheritance: AD Classification: LIMITED, NO_KNOWN Submitted by: Genomics England PanelApp, ClinGen

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_017636.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
TRPM4
NM_017636.4
MANE Select
c.3361C>Ap.Leu1121Met
missense
Exon 22 of 25NP_060106.2
TRPM4
NM_001321281.2
c.3016C>Ap.Leu1006Met
missense
Exon 20 of 23NP_001308210.1
TRPM4
NM_001195227.2
c.2926C>Ap.Leu976Met
missense
Exon 21 of 24NP_001182156.1

Ensembl Transcripts

Selected
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
TRPM4
ENST00000252826.10
TSL:1 MANE Select
c.3361C>Ap.Leu1121Met
missense
Exon 22 of 25ENSP00000252826.4
TRPM4
ENST00000427978.6
TSL:1
c.2926C>Ap.Leu976Met
missense
Exon 21 of 24ENSP00000407492.1
TRPM4
ENST00000595519.5
TSL:1
n.*2771C>A
non_coding_transcript_exon
Exon 20 of 23ENSP00000469893.1

Frequencies

GnomAD3 genomes
Cov.:
31
GnomAD2 exomes
AF:
0.00000399
AC:
1
AN:
250582
AF XY:
0.00000737
show subpopulations
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:
0.00000883
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
6.84e-7
AC:
1
AN:
1461822
Hom.:
0
Cov.:
34
AF XY:
0.00000138
AC XY:
1
AN XY:
727206
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33480
American (AMR)
AF:
0.00
AC:
0
AN:
44724
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26114
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39700
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86228
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53410
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5768
European-Non Finnish (NFE)
AF:
8.99e-7
AC:
1
AN:
1112006
Other (OTH)
AF:
0.00
AC:
0
AN:
60392
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.475
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
GnomAD4 genome
Cov.:
31
ExAC
AF:
0.00000824
AC:
1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.26
BayesDel_addAF
Benign
-0.048
T
BayesDel_noAF
Benign
-0.31
CADD
Benign
21
DANN
Uncertain
0.99
DEOGEN2
Benign
0.33
T
Eigen
Benign
-0.000021
Eigen_PC
Benign
-0.13
FATHMM_MKL
Uncertain
0.89
D
LIST_S2
Benign
0.61
T
M_CAP
Benign
0.037
D
MetaRNN
Uncertain
0.46
T
MetaSVM
Benign
-0.58
T
MutationAssessor
Uncertain
2.1
M
PhyloP100
0.63
PrimateAI
Uncertain
0.57
T
PROVEAN
Benign
-1.3
N
REVEL
Benign
0.23
Sift
Benign
0.085
T
Sift4G
Benign
0.15
T
Polyphen
1.0
D
Vest4
0.48
MutPred
0.40
Gain of catalytic residue at L1121 (P = 0.059)
MVP
0.64
MPC
0.71
ClinPred
0.35
T
GERP RS
1.3
PromoterAI
-0.28
Neutral
Varity_R
0.18
gMVP
0.51
Mutation Taster
=73/27
polymorphism

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

Other links and lift over

dbSNP: rs746156917; hg19: chr19-49713999; API