rs886039823

Variant names:

• chr18-10715678-C-G
• rs886039823
• NM_001378183.1:c.5228G>C

Your query was ambiguous. Multiple possible variants found:

• chr18-10715678-C-G
• chr18-10715678-C-T

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM2 PP3_Moderate PP5

The NM_001378183.1(PIEZO2):​c.5228G>C​(p.Arg1743Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1743Q) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 33)
• Consequence: PIEZO2 NM_001378183.1 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 7.57
• Publications: 4 publications found

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: Orphanet, Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P
• arthrogryposis, distal, with impaired proprioception and touch

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Illumina, G2P, Ambry Genetics
• arthrogryposis- oculomotor limitation-electroretinal anomalies syndrome

  Inheritance: AD Classification: MODERATE, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics
• connective tissue disorder

  Inheritance: AR Classification: MODERATE Submitted by: Genomics England PanelApp
• Marden-Walker syndrome

  Inheritance: AR, AD Classification: MODERATE, SUPPORTIVE Submitted by: Orphanet, Genomics England PanelApp, Ambry Genetics

ACMG classification

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.875
• PP5: Variant 18-10715678-C-G is Pathogenic according to our data. Variant chr18-10715678-C-G is described in ClinVar as Pathogenic. ClinVar VariationId is 265869.Status of the report is no_assertion_criteria_provided, 0 stars.

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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PIEZO2	NM_001378183.1	MANE Select	c.5228G>C	p.Arg1743Pro	missense	Exon 38 of 56	NP_001365112.1	A0A2H4UKA7
	PIEZO2	NM_001410871.1		c.5129G>C	p.Arg1710Pro	missense	Exon 37 of 54	NP_001397800.1	Q9H5I5-4
	PIEZO2	NM_022068.4		c.5054G>C	p.Arg1685Pro	missense	Exon 35 of 52	NP_071351.2	Q9H5I5-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PIEZO2	ENST00000674853.1	MANE Select	c.5228G>C	p.Arg1743Pro	missense	Exon 38 of 56	ENSP00000501957.1	A0A2H4UKA7
	PIEZO2	ENST00000503781.7	TSL:1	c.5054G>C	p.Arg1685Pro	missense	Exon 35 of 52	ENSP00000421377.3	Q9H5I5-1
	PIEZO2	ENST00000580640.5	TSL:5	c.5129G>C	p.Arg1710Pro	missense	Exon 37 of 54	ENSP00000463094.1	Q9H5I5-4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
1	-	-	Arthrogryposis, distal, with impaired proprioception and touch (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.42	D
BayesDel_noAF	Pathogenic	0.36
CADD	Pathogenic	28
DANN	Uncertain	0.98
DEOGEN2	Benign	0.36	T
Eigen	Uncertain	0.63
Eigen_PC	Pathogenic	0.69
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.95	D
M_CAP	Uncertain	0.28	D
MetaRNN	Pathogenic	0.88	D
MetaSVM	Uncertain	0.46	D
MutationAssessor	Uncertain	2.3	M
PhyloP100		7.6
PrimateAI	Pathogenic	0.87	D
PROVEAN	Pathogenic	-6.4	D
REVEL	Pathogenic	0.79
Sift	Uncertain	0.0010	D
Sift4G	Uncertain	0.011	D
Vest4		0.89
MutPred		0.67		Loss of MoRF binding (P = 0.0099)
MVP		0.54
MPC		1.2
ClinPred		0.99	D
GERP RS		6.1
Varity_R		0.84
gMVP		0.94
Mutation Taster		=0/100	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		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: rs886039823; hg19: chr18-10715676;