Variant chr21-37065606-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -17 ACMG points: 0P and 17B. BP4_StrongBP6_Very_StrongBP7BS2

The NM_153682.3(PIGP):c.381C>T(p.Ala127Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000895 in 1,612,792 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00056 ( 1 hom., cov: 32)

Exomes 𝑓: 0.00093 ( 2 hom. )

Consequence

PIGP
NM_153682.3 synonymous

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: -0.171

Variant links:

Genes affected

PIGP (HGNC:3046): (phosphatidylinositol glycan anchor biosynthesis class P) This gene encodes an enzyme involved in the first step of glycosylphosphatidylinositol (GPI)-anchor biosynthesis. The GPI-anchor is a glycolipid found on many blood cells that serves to anchor proteins to the cell surface. The encoded protein is a component of the GPI-N-acetylglucosaminyltransferase complex that catalyzes the transfer of N-acetylglucosamine (GlcNAc) from UDP-GlcNAc to phosphatidylinositol (PI). This gene is located in the Down Syndrome critical region on chromosome 21 and is a candidate for the pathogenesis of Down syndrome. This gene has multiple pseudogenes and is a member of the phosphatidylinositol glycan anchor biosynthesis gene family. Alternatively spliced transcript variants encoding different isoforms have been described. [provided by RefSeq, Feb 2016]

PIGP links:

PIGP (HGNC:):

PIGP links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -17 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.54).

BP6

Variant 21-37065606-G-A is Benign according to our data. Variant chr21-37065606-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 1559960.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-0.171 with no splicing effect.

BS2

High Homozygotes in GnomAdExome4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PIGP	NM_153682.3 linkuse as main transcript	c.381C>T	p.Ala127Ala	synonymous_variant	5/5	ENST00000360525.9	NP_710149.1	P57054-2
PIGP	NM_153681.2 linkuse as main transcript	c.453C>T	p.Ala151Ala	synonymous_variant	4/4		NP_710148.1	P57054-1
PIGP	NM_001320480.2 linkuse as main transcript	c.381C>T	p.Ala127Ala	synonymous_variant	5/5		NP_001307409.1	P57054-2
PIGP	NM_016430.4 linkuse as main transcript	c.303C>T	p.Ala101Ala	synonymous_variant	6/6		NP_057514.2	P57054-3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PIGP	ENST00000360525.9 linkuse as main transcript	c.381C>T	p.Ala127Ala	synonymous_variant	5/5	1	NM_153682.3	ENSP00000353719.3		P57054-2

Frequencies

GnomAD3 genomes

AF:

0.000559

AC:

AN:

152048

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000386

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000971

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000437

AC:

109

AN:

249418

Hom.:

AF XY:

0.000415

AC XY:

AN XY:

135026

show subpopulations

Gnomad AFR exome

AF:

0.000308

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:

0.000907

Gnomad OTH exome

AF:

0.000329

GnomAD4 exome

AF:

0.000930

AC:

1358

AN:

1460626

Hom.:

Cov.:

AF XY:

0.000863

AC XY:

627

AN XY:

726608

show subpopulations

Gnomad4 AFR exome

AF:

0.000120

Gnomad4 AMR exome

AF:

0.0000449

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.0000187

Gnomad4 NFE exome

AF:

0.00120

Gnomad4 OTH exome

AF:

0.000331

GnomAD4 genome

AF:

0.000559

AC:

AN:

152166

Hom.:

Cov.:

AF XY:

0.000618

AC XY:

AN XY:

74406

show subpopulations

Gnomad4 AFR

AF:

0.000385

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000971

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.000945

Hom.:

Bravo

AF:

0.000510

Asia WGS

AF:

0.000289

AC:

AN:

3474

EpiCase

AF:

0.000546

EpiControl

AF:

0.000831

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Dec 13, 2023	- -
Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Nov 01, 2022	PIGP: BP4, BP7 -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.54

CADD

Benign

6.4

DANN

Benign

0.47

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over