Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 8P and 9B. PVS1BP6BS1BS2

The NM_021625.5(TRPV4):c.1656delC(p.Tyr553ThrfsTer8) variant causes a frameshift, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000465 in 1,613,662 control chromosomes in the GnomAD database, including 3 homozygotes. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.00051 ( 1 hom., cov: 31)

Exomes 𝑓: 0.00046 ( 2 hom. )

Consequence

TRPV4
NM_021625.5 frameshift, splice_region

Scores

Not classified

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:6

Conservation

PhyloP100: 0.385

Publications

3 publications found

Variant links:

Genes affected

TRPV4 (HGNC:18083): (transient receptor potential cation channel subfamily V member 4) This gene encodes a member of the OSM9-like transient receptor potential channel (OTRPC) subfamily in the transient receptor potential (TRP) superfamily of ion channels. The encoded protein is a Ca2+-permeable, nonselective cation channel that is thought to be involved in the regulation of systemic osmotic pressure. Mutations in this gene are the cause of spondylometaphyseal and metatropic dysplasia and hereditary motor and sensory neuropathy type IIC. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Apr 2010]

TRPV4 Gene-Disease associations (from GenCC):

metatropic dysplasia
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, G2P
neuromuscular disease
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
spondylometaphyseal dysplasia, Kozlowski type
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: G2P, Orphanet
TRPV4-related bone disorder
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen, Illumina
autosomal dominant brachyolmia
Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Genomics England PanelApp
Charcot-Marie-Tooth disease axonal type 2C
Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae)
scapuloperoneal spinal muscular atrophy, autosomal dominant
Inheritance: AD Classification: MODERATE, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics
familial avascular necrosis of femoral head
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
familial digital arthropathy-brachydactyly
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
neuronopathy, distal hereditary motor, autosomal dominant 8
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
parastremmatic dwarfism
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

TRPV4 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -1 ACMG points.

PVS1

Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

BP6

Variant 12-109793528-AG-A is Benign according to our data. Variant chr12-109793528-AG-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 241385.

BS1

Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.000506 (77/152214) while in subpopulation NFE AF = 0.000529 (36/68020). AF 95% confidence interval is 0.000392. There are 1 homozygotes in GnomAd4. There are 48 alleles in the male GnomAd4 subpopulation. Median coverage is 31. This position passed quality control check.

BS2

High AC in GnomAd4 at 77 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_021625.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
TRPV4	NM_021625.5	MANE Select	c.1656delC	p.Tyr553ThrfsTer8	frameshift splice_region	Exon 10 of 16	NP_067638.3
TRPV4	NM_001177431.1		c.1554delC	p.Tyr519ThrfsTer8	frameshift splice_region	Exon 10 of 16	NP_001170902.1
TRPV4	NM_001177428.1		c.1515delC	p.Tyr506ThrfsTer8	frameshift splice_region	Exon 8 of 14	NP_001170899.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
TRPV4	ENST00000261740.7	TSL:1 MANE Select	c.1656delC	p.Tyr553ThrfsTer8	frameshift splice_region	Exon 10 of 16	ENSP00000261740.2
TRPV4	ENST00000418703.7	TSL:1	c.1656delC	p.Tyr553ThrfsTer8	frameshift splice_region	Exon 9 of 15	ENSP00000406191.2
TRPV4	ENST00000536838.1	TSL:1	c.1554delC	p.Tyr519ThrfsTer8	frameshift splice_region	Exon 10 of 16	ENSP00000444336.1

Frequencies

GnomAD3 genomes

AF:

0.000506

AC:

AN:

152096

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00358

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000529

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000577

AC:

145

AN:

251256

AF XY:

0.000501

show subpopulations

Gnomad AFR exome

AF:

0.0000617

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00397

Gnomad NFE exome

AF:

0.000502

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000461

AC:

673

AN:

1461448

Hom.:

Cov.:

AF XY:

0.000413

AC XY:

300

AN XY:

727052

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33470

American (AMR)

AF:

0.0000224

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39696

South Asian (SAS)

AF:

0.00

AC:

AN:

86250

European-Finnish (FIN)

AF:

0.00382

AC:

204

AN:

53352

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.000398

AC:

442

AN:

1111678

Other (OTH)

AF:

0.000414

AC:

AN:

60382

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.471

Heterozygous variant carriers

107

142

178

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000506

AC:

AN:

152214

Hom.:

Cov.:

AF XY:

0.000645

AC XY:

AN XY:

74434

show subpopulations

African (AFR)

AF:

0.0000481

AC:

AN:

41538

American (AMR)

AF:

0.0000654

AC:

AN:

15280

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5172

South Asian (SAS)

AF:

0.00

AC:

AN:

4816

European-Finnish (FIN)

AF:

0.00358

AC:

AN:

10608

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000529

AC:

AN:

68020

Other (OTH)

AF:

0.00

AC:

AN:

2106

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.505

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000354

Hom.:

Bravo

AF:

0.000257

EpiCase

AF:

0.000218

EpiControl

AF:

0.000296

ClinVar

ClinVar submissions as Germline

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (2)

not specified (2)

Charcot-Marie-Tooth disease (1)

Charcot-Marie-Tooth disease axonal type 2C (1)

Inborn genetic diseases (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

PhyloP100

0.39

Mutation Taster

=5/195

disease causing (fs/PTC)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.070

Details are displayed if max score is > 0.2

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

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

ClinVar submissions as Germline

Computational scores

Splicing

Publications

Other links and lift over