Genetic Variant PIEZO2:p.Leu2068Leu (chr18-10704450-A-G) – ACMG Classification: Benign (-18 pts)

Variant summary

Our verdict is Benign. The variant received -18 ACMG points: 0P and 18B. BP4_ModerateBP6_Very_StrongBS1BS2

The NM_001378183.1(PIEZO2):c.6202T>C(p.Leu2068Leu) variant causes a synonymous change. The variant allele was found at a frequency of 0.00138 in 1,537,226 control chromosomes in the GnomAD database, including 33 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.0072 ( 20 hom., cov: 33)

Exomes 𝑓: 0.00074 ( 13 hom. )

Consequence

PIEZO2
NM_001378183.1 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 3.87

Publications

0 publications found

Variant links:

Genes affected

PIEZO2 (HGNC:26270): (piezo type mechanosensitive ion channel component 2) The protein encoded by this gene contains more than thirty transmembrane domains and likely functions as part of mechanically-activated (MA) cation channels. These channels serve to connect mechanical forces to biological signals. The encoded protein quickly adapts MA currents in somatosensory neurons. Defects in this gene are a cause of type 5 distal arthrogryposis. Several alternatively spliced transcript variants of this gene have been described, but their full-length nature is not known. [provided by RefSeq, Feb 2014]

PIEZO2 Gene-Disease associations (from GenCC):

Gordon syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae), Orphanet
arthrogryposis, distal, with impaired proprioception and touch
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), G2P, Illumina, Ambry Genetics
arthrogryposis- oculomotor limitation-electroretinal anomalies syndrome
Inheritance: AD Classification: MODERATE, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet
connective tissue disorder
Inheritance: AR Classification: MODERATE Submitted by: Genomics England PanelApp
Marden-Walker syndrome
Inheritance: AR, AD Classification: MODERATE, SUPPORTIVE Submitted by: Genomics England PanelApp, Ambry Genetics, Orphanet

PIEZO2 links:

ENSG00000264843 (HGNC:):

ENSG00000264843 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -18 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.46).

BP6

Variant 18-10704450-A-G is Benign according to our data. Variant chr18-10704450-A-G is described in ClinVar as Benign. ClinVar VariationId is 783798.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 = 0.00725 (1104/152286) while in subpopulation AFR AF = 0.0238 (988/41552). AF 95% confidence interval is 0.0225. There are 20 homozygotes in GnomAd4. There are 524 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 20 AD,AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001378183.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
PIEZO2	NM_001378183.1	MANE Select	c.6202T>C	p.Leu2068Leu	synonymous	Exon 42 of 56	NP_001365112.1
PIEZO2	NM_001410871.1		c.5938T>C	p.Leu1980Leu	synonymous	Exon 40 of 54	NP_001397800.1
PIEZO2	NM_022068.4		c.5863T>C	p.Leu1955Leu	synonymous	Exon 38 of 52	NP_071351.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
PIEZO2	ENST00000674853.1	MANE Select	c.6202T>C	p.Leu2068Leu	synonymous	Exon 42 of 56	ENSP00000501957.1
PIEZO2	ENST00000503781.7	TSL:1	c.5863T>C	p.Leu1955Leu	synonymous	Exon 38 of 52	ENSP00000421377.3
PIEZO2	ENST00000580640.5	TSL:5	c.5938T>C	p.Leu1980Leu	synonymous	Exon 40 of 54	ENSP00000463094.1

Frequencies

GnomAD3 genomes

AF:

0.00723

AC:

1100

AN:

152168

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0238

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00595

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:

0.000118

Gnomad OTH

AF:

0.00812

GnomAD2 exomes

AF:

0.00168

AC:

238

AN:

141888

AF XY:

0.00116

show subpopulations

Gnomad AFR exome

AF:

0.0265

Gnomad AMR exome

AF:

0.00118

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000514

Gnomad OTH exome

AF:

0.000711

GnomAD4 exome

AF:

0.000739

AC:

1024

AN:

1384940

Hom.:

Cov.:

AF XY:

0.000604

AC XY:

413

AN XY:

683400

show subpopulations

African (AFR)

AF:

0.0235

AC:

743

AN:

31592

American (AMR)

AF:

0.00216

AC:

AN:

35700

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25182

East Asian (EAS)

AF:

0.00

AC:

AN:

35734

South Asian (SAS)

AF:

0.0000379

AC:

AN:

79236

European-Finnish (FIN)

AF:

0.00

AC:

AN:

35000

Middle Eastern (MID)

AF:

0.00176

AC:

AN:

5696

European-Non Finnish (NFE)

AF:

0.0000686

AC:

AN:

1078886

Other (OTH)

AF:

0.00202

AC:

117

AN:

57914

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.488

Heterozygous variant carriers

130

194

259

324

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

112

140

<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:

0.00725

AC:

1104

AN:

152286

Hom.:

Cov.:

AF XY:

0.00704

AC XY:

524

AN XY:

74468

show subpopulations

African (AFR)

AF:

0.0238

AC:

988

AN:

41552

American (AMR)

AF:

0.00595

AC:

AN:

15304

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5170

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000118

AC:

AN:

68022

Other (OTH)

AF:

0.00803

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.498

Heterozygous variant carriers

112

169

225

281

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

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

Alfa

AF:

0.00269

Hom.:

Bravo

AF:

0.00817

Asia WGS

AF:

0.00144

AC:

AN:

3478

ClinVar

ClinVar submissions as Germline

Significance:Benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (2)

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.46

CADD

Benign

8.7

(source)

DANN

Benign

0.79

PhyloP100

3.9

Mutation Taster

=77/23

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

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

Computational scores

Splicing

Publications

Other links and lift over