16-574551-G-A

Variant names:

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4_StrongBP6_ModerateBP7

The NM_004204.5(PIGQ):c.477G>A(p.Thr159Thr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000468 in 1,603,890 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★). Synonymous variant affecting the same amino acid position (i.e. T159T) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000092 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000042 ( 0 hom. )

Consequence

PIGQ
NM_004204.5 synonymous

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:2

Conservation

PhyloP100: -4.98

Publications

0 publications found

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]

PIGQ Gene-Disease associations (from GenCC):

developmental and epileptic encephalopathy, 77
Inheritance: AR Classification: STRONG, MODERATE, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P
genetic developmental and epileptic encephalopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

PIGQ links:

ENSG00000282907 (HGNC:):

ENSG00000282907 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -7 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.83).

BP6

Variant 16-574551-G-A is Benign according to our data. Variant chr16-574551-G-A is described in ClinVar as Likely_benign. ClinVar VariationId is 526284.Status of the report is criteria_provided_single_submitter, 1 stars.

BP7

Synonymous conserved (PhyloP=-4.98 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004204.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PIGQ	NM_004204.5	MANE Select	c.477G>A	p.Thr159Thr	synonymous	Exon 2 of 11	NP_004195.2
	PIGQ	NM_148920.4		c.477G>A	p.Thr159Thr	synonymous	Exon 2 of 10	NP_683721.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
PIGQ	ENST00000321878.10	TSL:1 MANE Select	c.477G>A	p.Thr159Thr	synonymous	Exon 2 of 11	ENSP00000326674.6
PIGQ	ENST00000026218.9	TSL:1	c.477G>A	p.Thr159Thr	synonymous	Exon 2 of 10	ENSP00000026218.5
PIGQ	ENST00000470411.2	TSL:1	c.477G>A	p.Thr159Thr	synonymous	Exon 2 of 3	ENSP00000439650.1

Frequencies

GnomAD3 genomes

AF:

0.0000920

AC:

AN:

152208

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000770

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000622

AC:

AN:

225136

AF XY:

0.0000567

show subpopulations

Gnomad AFR exome

AF:

0.0000734

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000293

Gnomad FIN exome

AF:

0.0000526

Gnomad NFE exome

AF:

0.0000404

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000420

AC:

AN:

1451564

Hom.:

Cov.:

AF XY:

0.0000360

AC XY:

AN XY:

721288

show subpopulations

African (AFR)

AF:

0.0000899

AC:

AN:

33382

American (AMR)

AF:

0.00

AC:

AN:

43844

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25900

East Asian (EAS)

AF:

0.000152

AC:

AN:

39346

South Asian (SAS)

AF:

0.000106

AC:

AN:

84910

European-Finnish (FIN)

AF:

0.0000197

AC:

AN:

50870

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5592

European-Non Finnish (NFE)

AF:

0.0000334

AC:

AN:

1107800

Other (OTH)

AF:

0.0000834

AC:

AN:

59920

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<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:

0.0000919

AC:

AN:

152326

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

74490

show subpopulations

African (AFR)

AF:

0.000168

AC:

AN:

41574

American (AMR)

AF:

0.00

AC:

AN:

15310

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.000772

AC:

AN:

5180

South Asian (SAS)

AF:

0.000207

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68022

Other (OTH)

AF:

0.00

AC:

AN:

2106

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.482

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<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:

0.0000283

Hom.:

Bravo

AF:

0.000125

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

PIGQ-related disorder

Benign:1

Jun 21, 2024

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications).

Epilepsy

Benign:1

Jan 01, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.10

BayesDel_noAF

Benign

-0.83

CADD

Benign

0.084

(source)

DANN

Benign

0.58

PhyloP100

-5.0

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

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over