19-49168558-G-T

Variant names:

• chr19-49168558-G-T
• rs142788545
• NM_017636.4:c.618G>T

Variant summary

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

The NM_017636.4(TRPM4):​c.618G>T​(p.Ser206Ser) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. S206S) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 30)
• Consequence: TRPM4 NM_017636.4 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.98
• Publications: 0 publications found

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: Labcorp Genetics (formerly Invitae), G2P, 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

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=-0.78).
• BP7: Synonymous conserved (PhyloP=-1.98 with no splicing effect.

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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TRPM4	NM_017636.4	MANE Select	c.618G>T	p.Ser206Ser	synonymous	Exon 6 of 25	NP_060106.2
	TRPM4	NM_001321281.2		c.273G>T	p.Ser91Ser	synonymous	Exon 4 of 23	NP_001308210.1
	TRPM4	NM_001195227.2		c.618G>T	p.Ser206Ser	synonymous	Exon 6 of 24	NP_001182156.1	Q8TD43-3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TRPM4	ENST00000252826.10	TSL:1 MANE Select	c.618G>T	p.Ser206Ser	synonymous	Exon 6 of 25	ENSP00000252826.4	Q8TD43-1
	TRPM4	ENST00000427978.6	TSL:1	c.618G>T	p.Ser206Ser	synonymous	Exon 6 of 24	ENSP00000407492.1	Q8TD43-3
	TRPM4	ENST00000595519.5	TSL:1	n.*28G>T		non_coding_transcript_exon	Exon 4 of 23	ENSP00000469893.1	M0QYK7

Frequencies

GnomAD3 genomes Cov.: 30

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 30

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.19
BayesDel_noAF	Benign	-0.78
CADD	Benign	0.0080
DANN	Benign	0.70
PhyloP100		-2.0

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs142788545; hg19: chr19-49671815;