16-88733731-C-A

Position:

• chr16-88733731-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_001142864.4(PIEZO1):​c.2344G>T​(p.Gly782Cys) variant causes a missense change. The variant allele was found at a frequency of 0.000000718 in 1,393,148 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G782S) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 34)
  • Exomes 𝑓: 7.2e-7 (0 hom.)
• Consequence: PIEZO1 NM_001142864.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.99

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]

ENSG00000224888 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.786

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PIEZO1	NM_001142864.4	c.2344G>T	p.Gly782Cys	missense_variant	18/51	ENST00000301015.14	NP_001136336.2
HSALR1	NR_103774.1	n.269+2283C>A		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PIEZO1	ENST00000301015.14	c.2344G>T	p.Gly782Cys	missense_variant	18/51	1	NM_001142864.4	ENSP00000301015.9
ENSG00000224888	ENST00000440406.2	n.269+2283C>A		intron_variant		2

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome AF: 7.18e-7 AC: 1 AN: 1393148 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 686828

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 9.29e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 34

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.43
BayesDel_addAF	Uncertain	0.081	D
BayesDel_noAF	Benign	-0.12
CADD	Pathogenic	26
DANN	Uncertain	1.0
DEOGEN2	Benign	0.11	T
Eigen	Uncertain	0.29
Eigen_PC	Uncertain	0.34
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Benign	0.79	T
M_CAP	Pathogenic	0.45	D
MetaRNN	Pathogenic	0.79	D
MetaSVM	Benign	-0.44	T
MutationAssessor	Uncertain	2.8	M
PrimateAI	Uncertain	0.63	T
PROVEAN	Uncertain	-3.7	D
REVEL	Uncertain	0.35
Sift	Benign	0.18	T
Sift4G	Benign	0.19	T
Polyphen		1.0	D
Vest4		0.83
MutPred		0.42		Gain of helix (P = 0.0425);
MVP		0.15
ClinPred		0.99	D
GERP RS		4.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.39
gMVP		0.49

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

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

Publications

LitVar

Other links and lift over

dbSNP: rs200970763; hg19: chr16-88800139;