chr1-26794649-C-T

Position:

chr1-26794649-C-T

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_017837.4(PIGV):c.615C>T(p.Asn205=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00167 in 1,614,208 control chromosomes in the GnomAD database, including 37 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0093 ( 13 hom., cov: 32)

Exomes 𝑓: 0.00088 ( 24 hom. )

Consequence

PIGV
NM_017837.4 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5

Conservation

PhyloP100: -3.54

Variant links:

Genes affected

PIGV (HGNC:26031): (phosphatidylinositol glycan anchor biosynthesis class V) This gene encodes a mannosyltransferase enzyme involved in the biosynthesis of glycosylphosphatidylinositol (GPI). GPI is a complex glycolipid that functions as a membrane anchor for many proteins and plays a role in multiple cellular processes including protein sorting and signal transduction. The encoded protein is localized to the endoplasmic reticulum and transfers the second mannose to the GPI backbone. Mutations in this gene are associated with hyperphosphatasia cognitive disability syndrome. Alternatively spliced transcript variants have been observed for this gene. [provided by RefSeq, Feb 2011]

PIGV links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.9).

BP6

Variant 1-26794649-C-T is Benign according to our data. Variant chr1-26794649-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 382935.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-3.54 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00927 (1412/152316) while in subpopulation AFR AF= 0.0319 (1325/41568). AF 95% confidence interval is 0.0304. There are 13 homozygotes in gnomad4. There are 696 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 13 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PIGV	NM_017837.4 linkuse as main transcript	c.615C>T	p.Asn205=	synonymous_variant	3/4	ENST00000674202.1	NP_060307.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PIGV	ENST00000674202.1 linkuse as main transcript	c.615C>T	p.Asn205=	synonymous_variant	3/4		NM_017837.4	ENSP00000501479	P1

Frequencies

GnomAD3 genomes

AF:

0.00924

AC:

1406

AN:

152198

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0318

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00393

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000132

Gnomad OTH

AF:

0.00814

GnomAD3 exomes

AF:

0.00243

AC:

612

AN:

251442

Hom.:

AF XY:

0.00180

AC XY:

245

AN XY:

135912

show subpopulations

Gnomad AFR exome

AF:

0.0313

Gnomad AMR exome

AF:

0.00234

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:

0.000167

Gnomad OTH exome

AF:

0.000489

GnomAD4 exome

AF:

0.000883

AC:

1291

AN:

1461892

Hom.:

Cov.:

AF XY:

0.000760

AC XY:

553

AN XY:

727246

show subpopulations

Gnomad4 AFR exome

AF:

0.0285

Gnomad4 AMR exome

AF:

0.00253

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000102

Gnomad4 OTH exome

AF:

0.00172

GnomAD4 genome

AF:

0.00927

AC:

1412

AN:

152316

Hom.:

Cov.:

AF XY:

0.00934

AC XY:

696

AN XY:

74490

show subpopulations

Gnomad4 AFR

AF:

0.0319

Gnomad4 AMR

AF:

0.00392

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000132

Gnomad4 OTH

AF:

0.00806

Alfa

AF:

0.00500

Hom.:

Bravo

AF:

0.0101

Asia WGS

AF:

0.000577

AC:

AN:

3478

EpiCase

AF:

0.000382

EpiControl

AF:

0.000296

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:3

Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Feb 01, 2024	- -
Likely benign, criteria provided, single submitter	clinical testing	Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics	Sep 18, 2017	- -

not specified

Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

Feb 24, 2016

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Hyperphosphatasia with intellectual disability syndrome 1

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.90

CADD

Benign

0.27

DANN

Benign

0.61

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

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