4-527054-C-T

Position:

Variant summary

Our verdict is Benign. Variant got -13 ACMG points: 0P and 13B. BP4_StrongBP6_Very_StrongBP7

The NM_001127178.3(PIGG):​c.2085C>T​(p.Ala695=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000229 in 1,614,076 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0011 ( 1 hom., cov: 32)
Exomes 𝑓: 0.00014 ( 1 hom. )

Consequence

PIGG
NM_001127178.3 synonymous

Scores

2

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: -0.972
Variant links:
Genes affected
PIGG (HGNC:25985): (phosphatidylinositol glycan anchor biosynthesis class G (EMM blood group)) This gene encodes an enzyme involved in glycosylphosphatidylinositol-anchor biosynthesis. The encoded protein, which is localized to the endoplasmic reticulum, is involved in transferring ethanoloamine phosphate to mannose 2 of glycosylphosphatidylinositol species H7 to form species H8. Allelic variants of this gene have been associated with intellectual disability, hypotonia, and early-onset seizures. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Sep 2016]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -13 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.8).
BP6
Variant 4-527054-C-T is Benign according to our data. Variant chr4-527054-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 476329.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BP7
Synonymous conserved (PhyloP=-0.972 with no splicing effect.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
PIGGNM_001127178.3 linkuse as main transcriptc.2085C>T p.Ala695= synonymous_variant 10/13 ENST00000453061.7 NP_001120650.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
PIGGENST00000453061.7 linkuse as main transcriptc.2085C>T p.Ala695= synonymous_variant 10/131 NM_001127178.3 ENSP00000415203 P4Q5H8A4-1

Frequencies

GnomAD3 genomes
AF:
0.00105
AC:
160
AN:
152096
Hom.:
1
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00360
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000458
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:
0.0000588
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.000363
AC:
91
AN:
250694
Hom.:
1
AF XY:
0.000295
AC XY:
40
AN XY:
135524
show subpopulations
Gnomad AFR exome
AF:
0.00326
Gnomad AMR exome
AF:
0.000260
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.000784
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000442
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.000144
AC:
210
AN:
1461862
Hom.:
1
Cov.:
30
AF XY:
0.000146
AC XY:
106
AN XY:
727240
show subpopulations
Gnomad4 AFR exome
AF:
0.00326
Gnomad4 AMR exome
AF:
0.000224
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.000580
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000252
Gnomad4 OTH exome
AF:
0.000199
GnomAD4 genome
AF:
0.00105
AC:
160
AN:
152214
Hom.:
1
Cov.:
32
AF XY:
0.000846
AC XY:
63
AN XY:
74430
show subpopulations
Gnomad4 AFR
AF:
0.00359
Gnomad4 AMR
AF:
0.000458
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000588
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.000805
Hom.:
0
Bravo
AF:
0.00129
EpiCase
AF:
0.00
EpiControl
AF:
0.0000593

ClinVar

Significance: Benign/Likely benign
Submissions summary: Benign:3
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Benign:2
Likely benign, criteria provided, single submitternot providedBreakthrough Genomics, Breakthrough Genomics-- -
Likely benign, criteria provided, single submitterclinical testingGeneDxMay 06, 2021- -
Intellectual disability, autosomal recessive 53 Benign:1
Benign, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpJan 09, 2024- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.80
CADD
Benign
1.1
DANN
Benign
0.61
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.070
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: rs150774662; hg19: chr4-520843; API