rs780985258

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_002643.4(PIGF):​c.566C>T​(p.Thr189Met) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000329 in 1,611,152 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000033 ( 0 hom. )

Consequence

PIGF
NM_002643.4 missense

Scores

2
8
9

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.68
Variant links:
Genes affected
PIGF (HGNC:8962): (phosphatidylinositol glycan anchor biosynthesis class F) This gene encodes a protein involved in glycosylphosphatidylinositol (GPI)-anchor biosynthesis. The GPI-anchor, a glycolipid containing three mannose molecules in its core backbone, is found on many blood cells where it serves to anchor proteins to the cell surface. The encoded protein and another GPI synthesis protein, PIGO, function in the transfer of ethanolaminephosphate to the third mannose in GPI. Alternatively spliced transcript variants encoding different isoforms have been described. [provided by RefSeq, Jul 2008]
RHOQ (HGNC:17736): (ras homolog family member Q) This gene encodes a member of the Rho family of small GTPases, which cycle between inactive GDP-bound and active GTP-bound states and function as molecular switches in signal transduction cascades. Rho proteins promote reorganization of the actin cytoskeleton and regulate cell shape, attachment, and motility. The encoded protein is an important signalling protein for sarcomere assembly and has been shown to play a significant role in the exocytosis of the solute carrier family 2, facilitated glucose transporter member 4 and other proteins, possibly acting as the signal that turns on the membrane fusion machinery. Three related pseudogene have been identified on chromosomes 2 and 14. [provided by RefSeq, Aug 2011]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
PIGFNM_002643.4 linkc.566C>T p.Thr189Met missense_variant Exon 6 of 6 ENST00000281382.11 NP_002634.1 Q07326-1Q6IB04
RHOQNM_012249.4 linkc.*489G>A 3_prime_UTR_variant Exon 5 of 5 ENST00000238738.9 NP_036381.2 P17081V9HWD0

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
PIGFENST00000281382.11 linkc.566C>T p.Thr189Met missense_variant Exon 6 of 6 1 NM_002643.4 ENSP00000281382.6 Q07326-1
RHOQENST00000238738.9 linkc.*489G>A 3_prime_UTR_variant Exon 5 of 5 1 NM_012249.4 ENSP00000238738.4 P17081

Frequencies

GnomAD3 genomes
AF:
0.0000329
AC:
5
AN:
152170
Hom.:
0
Cov.:
32
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:
0.000207
Gnomad FIN
AF:
0.0000942
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000441
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000323
AC:
8
AN:
247298
Hom.:
0
AF XY:
0.0000447
AC XY:
6
AN XY:
134120
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000291
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.000109
Gnomad SAS exome
AF:
0.0000983
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000180
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000329
AC:
48
AN:
1458982
Hom.:
0
Cov.:
30
AF XY:
0.0000331
AC XY:
24
AN XY:
725784
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.0000224
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.0000504
Gnomad4 SAS exome
AF:
0.0000232
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000360
Gnomad4 OTH exome
AF:
0.0000332
GnomAD4 genome
AF:
0.0000329
AC:
5
AN:
152170
Hom.:
0
Cov.:
32
AF XY:
0.0000404
AC XY:
3
AN XY:
74332
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.000207
Gnomad4 FIN
AF:
0.0000942
Gnomad4 NFE
AF:
0.0000441
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.0000868
Hom.:
0
Bravo
AF:
0.0000227
ExAC
AF:
0.00000825
AC:
1

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not specified Uncertain:1
Aug 10, 2024
Ambry Genetics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

The c.566C>T (p.T189M) alteration is located in exon 6 (coding exon 5) of the PIGF gene. This alteration results from a C to T substitution at nucleotide position 566, causing the threonine (T) at amino acid position 189 to be replaced by a methionine (M). 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
0.26
BayesDel_addAF
Benign
-0.0028
T
BayesDel_noAF
Uncertain
-0.020
CADD
Uncertain
23
DANN
Uncertain
1.0
DEOGEN2
Benign
0.084
T
Eigen
Pathogenic
0.76
Eigen_PC
Pathogenic
0.77
FATHMM_MKL
Uncertain
0.96
D
LIST_S2
Uncertain
0.92
D
M_CAP
Benign
0.0089
T
MetaRNN
Uncertain
0.52
D
MetaSVM
Benign
-0.32
T
MutationAssessor
Uncertain
2.1
M
PrimateAI
Uncertain
0.64
T
PROVEAN
Benign
-1.2
N
REVEL
Benign
0.19
Sift
Uncertain
0.028
D
Sift4G
Benign
0.093
T
Polyphen
1.0
D
Vest4
0.56
MutPred
0.48
Loss of sheet (P = 0.0315);
MVP
0.54
MPC
2.5
ClinPred
0.19
T
GERP RS
5.5
Varity_R
0.15
gMVP
0.52

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

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs780985258; hg19: chr2-46808711; API