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GeneBe

16-574165-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_004204.5(PIGQ):c.91G>T(p.Val31Leu) variant causes a missense change. The variant allele was found at a frequency of 0.000000685 in 1,460,280 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign 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. V31M) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 34)
Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

PIGQ
NM_004204.5 missense

Scores

4
8
6

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 6.53
Variant links:
Genes affected
PIGQ (HGNC:14135): (phosphatidylinositol glycan anchor biosynthesis class Q) This gene is involved in the first step in glycosylphosphatidylinositol (GPI)-anchor biosynthesis. The GPI-anchor is a glycolipid found on many blood cells and serves to anchor proteins to the cell surface. This gene encodes a N-acetylglucosaminyl transferase component that is part of the complex that catalyzes transfer of N-acetylglucosamine (GlcNAc) from UDP-GlcNAc to phosphatidylinositol (PI). Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jun 2012]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.4221667).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
PIGQNM_004204.5 linkuse as main transcriptc.91G>T p.Val31Leu missense_variant 2/11 ENST00000321878.10
PIGQNM_148920.4 linkuse as main transcriptc.91G>T p.Val31Leu missense_variant 2/10

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
PIGQENST00000321878.10 linkuse as main transcriptc.91G>T p.Val31Leu missense_variant 2/111 NM_004204.5 P1Q9BRB3-2

Frequencies

GnomAD3 genomes
Cov.:
34
GnomAD3 exomes
AF:
0.00000403
AC:
1
AN:
248028
Hom.:
0
AF XY:
0.00
AC XY:
0
AN XY:
134676
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00000896
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
6.85e-7
AC:
1
AN:
1460280
Hom.:
0
Cov.:
39
AF XY:
0.00
AC XY:
0
AN XY:
726500
show subpopulations
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:
9.00e-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
Pathogenic
0.58
BayesDel_addAF
Uncertain
0.12
D
BayesDel_noAF
Uncertain
-0.060
Cadd
Benign
22
Dann
Uncertain
1.0
DEOGEN2
Benign
0.15
T;.;.;.;.;T;.
Eigen
Uncertain
0.59
Eigen_PC
Uncertain
0.57
FATHMM_MKL
Pathogenic
0.98
D
LIST_S2
Uncertain
0.93
D;.;D;D;D;D;D
M_CAP
Benign
0.029
D
MetaRNN
Benign
0.42
T;T;T;T;T;T;T
MetaSVM
Benign
-0.46
T
MutationTaster
Benign
1.0
D;D;D;D
PrimateAI
Uncertain
0.54
T
PROVEAN
Uncertain
-2.7
D;N;N;D;D;N;D
REVEL
Benign
0.13
Sift
Pathogenic
0.0
D;D;D;D;D;D;D
Sift4G
Pathogenic
0.0
D;D;D;D;D;D;D
Polyphen
0.99, 0.99, 0.98
.;D;D;.;.;D;D
Vest4
0.44, 0.49, 0.71, 0.51
MutPred
0.29
Loss of sheet (P = 0.0181);Loss of sheet (P = 0.0181);Loss of sheet (P = 0.0181);Loss of sheet (P = 0.0181);Loss of sheet (P = 0.0181);Loss of sheet (P = 0.0181);Loss of sheet (P = 0.0181);
MVP
0.51
MPC
0.60
ClinPred
0.97
D
GERP RS
5.2
Varity_R
0.33
gMVP
0.69

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.020
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: rs148273392; hg19: chr16-624165; API