16-88717172-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 0P and 1B. BP4

The NM_001142864.4(PIEZO1):c.6511G>A(p.Val2171Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000645 in 1,550,544 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V2171F) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 34)

Exomes 𝑓: 0.0000064 ( 0 hom. )

Consequence

PIEZO1
NM_001142864.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.41

Publications

7 publications found

Variant links:

Genes affected

PIEZO1 (HGNC:28993): (piezo type mechanosensitive ion channel component 1 (Er blood group)) The protein encoded by this gene is a mechanically-activated ion channel that links mechanical forces to biological signals. The encoded protein contains 36 transmembrane domains and functions as a homotetramer. Defects in this gene have been associated with dehydrated hereditary stomatocytosis. [provided by RefSeq, Jul 2015]

PIEZO1 Gene-Disease associations (from GenCC):

PIEZO1-related generalized lymphatic dysplasia with non-immune hydrops fetalis
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
dehydrated hereditary stomatocytosis with or without pseudohyperkalemia and/or perinatal edema
Inheritance: AD Classification: STRONG Submitted by: Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae), ClinGen
lymphatic malformation 6
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine
dehydrated hereditary stomatocytosis
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

PIEZO1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

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

BP4

Computational evidence support a benign effect (MetaRNN=0.40467694).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PIEZO1	NM_001142864.4 link	c.6511G>A	p.Val2171Ile	missense_variant	Exon 45 of 51	ENST00000301015.14	NP_001136336.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PIEZO1	ENST00000301015.14 link	c.6511G>A	p.Val2171Ile	missense_variant	Exon 45 of 51	1	NM_001142864.4	ENSP00000301015.9

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152230

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000128

AC:

AN:

156668

AF XY:

0.0000121

show subpopulations

Gnomad AFR exome

AF:

0.000125

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.000117

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000644

AC:

AN:

1398314

Hom.:

Cov.:

AF XY:

0.00000725

AC XY:

AN XY:

689574

show subpopulations

African (AFR)

AF:

0.0000316

AC:

AN:

31600

American (AMR)

AF:

0.00

AC:

AN:

35706

Ashkenazi Jewish (ASJ)

AF:

0.0000397

AC:

AN:

25182

East Asian (EAS)

AF:

0.00

AC:

AN:

35740

South Asian (SAS)

AF:

0.00

AC:

AN:

79236

European-Finnish (FIN)

AF:

0.00

AC:

AN:

48054

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5702

European-Non Finnish (NFE)

AF:

0.00000649

AC:

AN:

1079046

Other (OTH)

AF:

0.00

AC:

AN:

58048

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.436

Heterozygous variant carriers

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:

0.00000657

AC:

AN:

152230

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74380

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41462

American (AMR)

AF:

0.00

AC:

AN:

15288

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5200

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68034

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.575

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:

0.0000300

Hom.:

Bravo

AF:

0.0000302

ESP6500AA

AF:

0.000723

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000183

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Apr 08, 2023

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.6511G>A (p.V2171I) alteration is located in exon 45 (coding exon 45) of the PIEZO1 gene. This alteration results from a G to A substitution at nucleotide position 6511, causing the valine (V) at amino acid position 2171 to be replaced by an isoleucine (I). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.20

BayesDel_addAF

Benign

-0.11

BayesDel_noAF

Benign

-0.16

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.27

T;.

Eigen

Uncertain

0.59

Eigen_PC

Uncertain

0.54

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.89

D;D

M_CAP

Pathogenic

0.58

MetaRNN

Benign

0.40

T;T

MetaSVM

Uncertain

0.066

MutationAssessor

Uncertain

2.3

M;.

PhyloP100

7.4

PrimateAI

Uncertain

0.78

PROVEAN

Benign

-0.79

N;N

REVEL

Benign

0.24

Sift

Uncertain

0.020

D;T

Sift4G

Pathogenic

0.0

D;D

Polyphen

0.88

P;D

Vest4

0.41

MVP

0.27

ClinPred

0.76

GERP RS

4.8

PromoterAI

-0.023

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.22

gMVP

0.71

Mutation Taster

=71/29

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over