Genetic Variant TRPV4:c.1824+4C>T (chr12-109792648-G-A) – ACMG Classification: Benign (-20 pts)

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_021625.5(TRPV4):c.1824+4C>T variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000454 in 1,614,090 control chromosomes in the GnomAD database, including 7 homozygotes. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0022 ( 6 hom., cov: 31)

Exomes 𝑓: 0.00027 ( 1 hom. )

Consequence

TRPV4
NM_021625.5 splice_region, intron

Scores

Splicing: ADA: 0.0001161

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:12

Conservation

PhyloP100: -0.960

Publications

1 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, ClinGen
neuromuscular disease
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
spondylometaphyseal dysplasia, Kozlowski type
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, 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), Genomics England PanelApp, Orphanet
Charcot-Marie-Tooth disease axonal type 2C
Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet
brachyolmia
Inheritance: AD Classification: MODERATE Submitted by: ClinGen
scapuloperoneal spinal muscular atrophy, autosomal dominant
Inheritance: AD Classification: MODERATE, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet
spondyloepimetaphyseal dysplasia, Maroteaux type
Inheritance: AD Classification: MODERATE Submitted by: ClinGen
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: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.71).

BP6

Variant 12-109792648-G-A is Benign according to our data. Variant chr12-109792648-G-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 283590.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00223 (340/152252) while in subpopulation AFR AF = 0.00737 (306/41540). AF 95% confidence interval is 0.00669. There are 6 homozygotes in GnomAd4. There are 149 alleles in the male GnomAd4 subpopulation. Median coverage is 31. This position passed quality control check.

BS2

High AC in GnomAd4 at 340 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	Effect	Exon Rank	Protein	UniProt
TRPV4	NM_021625.5	MANE Select	c.1824+4C>T	splice_region intron	N/A	NP_067638.3
TRPV4	NM_001177431.1		c.1722+4C>T	splice_region intron	N/A	NP_001170902.1	Q9HBA0-5
TRPV4	NM_001177428.1		c.1683+4C>T	splice_region intron	N/A	NP_001170899.1	Q9HBA0-4

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
TRPV4	ENST00000261740.7	TSL:1 MANE Select	c.1824+4C>T	splice_region intron	N/A	ENSP00000261740.2	Q9HBA0-1
TRPV4	ENST00000418703.7	TSL:1	c.1824+4C>T	splice_region intron	N/A	ENSP00000406191.2	Q9HBA0-1
TRPV4	ENST00000536838.1	TSL:1	c.1722+4C>T	splice_region intron	N/A	ENSP00000444336.1	Q9HBA0-5

Frequencies

GnomAD3 genomes

AF:

0.00212

AC:

323

AN:

152134

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00698

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00151

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.00191

GnomAD2 exomes

AF:

0.000593

AC:

149

AN:

251368

AF XY:

0.000339

show subpopulations

Gnomad AFR exome

AF:

0.00628

Gnomad AMR exome

AF:

0.000723

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000163

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000114

Gnomad OTH exome

AF:

0.000978

GnomAD4 exome

AF:

0.000268

AC:

392

AN:

1461838

Hom.:

Cov.:

AF XY:

0.000242

AC XY:

176

AN XY:

727232

show subpopulations

African (AFR)

AF:

0.00738

AC:

247

AN:

33480

American (AMR)

AF:

0.000850

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.000151

AC:

AN:

39698

South Asian (SAS)

AF:

0.0000348

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53386

Middle Eastern (MID)

AF:

0.000347

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000477

AC:

AN:

1111996

Other (OTH)

AF:

0.000712

AC:

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.467

Heterozygous variant carriers

103

129

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

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

GnomAD4 genome

AF:

0.00223

AC:

340

AN:

152252

Hom.:

Cov.:

AF XY:

0.00200

AC XY:

149

AN XY:

74452

show subpopulations

African (AFR)

AF:

0.00737

AC:

306

AN:

41540

American (AMR)

AF:

0.00150

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.000193

AC:

AN:

5180

South Asian (SAS)

AF:

0.00

AC:

AN:

4812

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10618

Middle Eastern (MID)

AF:

0.00340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000735

AC:

AN:

68024

Other (OTH)

AF:

0.00189

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.496

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

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:

0.00125

Hom.:

Bravo

AF:

0.00257

Asia WGS

AF:

0.00202

AC:

AN:

3478

ClinVar

ClinVar submissions

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (3)

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

Brachyrachia (short spine dysplasia) (1)

Charcot-Marie-Tooth disease (1)

Metatropic dysplasia (1)

Neuronopathy, distal hereditary motor, autosomal dominant 8 (1)

not specified (1)

Scapuloperoneal spinal muscular atrophy (1)

Spondylometaphyseal dysplasia, Kozlowski type (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.71

CADD

Benign

0.030

(source)

DANN

Benign

0.66

PhyloP100

-0.96

Mutation Taster

=100/0

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.00012

dbscSNV1_RF

Benign

0.022

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

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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

Computational scores

Splicing

Publications

Other links and lift over