1-77161411-G-A

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_005482.3(PIGK):​c.703-6C>T variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.998 in 1,490,316 control chromosomes in the GnomAD database, including 741,891 homozygotes. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.99 ( 74501 hom., cov: 32)
Exomes 𝑓: 1.0 ( 667390 hom. )

Consequence

PIGK
NM_005482.3 splice_region, intron

Scores

2
Splicing: ADA: 0.00003878
2

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 0.665
Variant links:
Genes affected
PIGK (HGNC:8965): (phosphatidylinositol glycan anchor biosynthesis class K) This gene encodes a member of the cysteine protease family C13 that is involved 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 protein is a member of the multisubunit enzyme, GPI transamidase and is thought to be its enzymatic component. GPI transamidase mediates GPI anchoring in the endoplasmic reticulum, by catalyzing the transfer of fully assembled GPI units to proteins. [provided by RefSeq, Jul 2008]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.89).
BP6
Variant 1-77161411-G-A is Benign according to our data. Variant chr1-77161411-G-A is described in ClinVar as [Benign]. Clinvar id is 1280784.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BA1
GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.994 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
PIGKNM_005482.3 linkuse as main transcriptc.703-6C>T splice_region_variant, intron_variant ENST00000370812.8 NP_005473.1 Q92643-1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
PIGKENST00000370812.8 linkuse as main transcriptc.703-6C>T splice_region_variant, intron_variant 1 NM_005482.3 ENSP00000359848.3 Q92643-1

Frequencies

GnomAD3 genomes
AF:
0.989
AC:
150507
AN:
152154
Hom.:
74452
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.962
Gnomad AMI
AF:
1.00
Gnomad AMR
AF:
0.997
Gnomad ASJ
AF:
0.998
Gnomad EAS
AF:
1.00
Gnomad SAS
AF:
1.00
Gnomad FIN
AF:
1.00
Gnomad MID
AF:
1.00
Gnomad NFE
AF:
1.00
Gnomad OTH
AF:
0.991
GnomAD3 exomes
AF:
0.997
AC:
248946
AN:
249628
Hom.:
124147
AF XY:
0.998
AC XY:
134795
AN XY:
135064
show subpopulations
Gnomad AFR exome
AF:
0.964
Gnomad AMR exome
AF:
0.998
Gnomad ASJ exome
AF:
0.997
Gnomad EAS exome
AF:
1.00
Gnomad SAS exome
AF:
1.00
Gnomad FIN exome
AF:
1.00
Gnomad NFE exome
AF:
1.00
Gnomad OTH exome
AF:
0.999
GnomAD4 exome
AF:
0.999
AC:
1336378
AN:
1338044
Hom.:
667390
Cov.:
20
AF XY:
0.999
AC XY:
671824
AN XY:
672570
show subpopulations
Gnomad4 AFR exome
AF:
0.959
Gnomad4 AMR exome
AF:
0.998
Gnomad4 ASJ exome
AF:
0.997
Gnomad4 EAS exome
AF:
1.00
Gnomad4 SAS exome
AF:
1.00
Gnomad4 FIN exome
AF:
1.00
Gnomad4 NFE exome
AF:
1.00
Gnomad4 OTH exome
AF:
0.997
GnomAD4 genome
AF:
0.989
AC:
150613
AN:
152272
Hom.:
74501
Cov.:
32
AF XY:
0.990
AC XY:
73680
AN XY:
74454
show subpopulations
Gnomad4 AFR
AF:
0.962
Gnomad4 AMR
AF:
0.997
Gnomad4 ASJ
AF:
0.998
Gnomad4 EAS
AF:
1.00
Gnomad4 SAS
AF:
1.00
Gnomad4 FIN
AF:
1.00
Gnomad4 NFE
AF:
1.00
Gnomad4 OTH
AF:
0.991
Alfa
AF:
0.995
Hom.:
32561
Bravo
AF:
0.987
Asia WGS
AF:
0.992
AC:
3441
AN:
3470
EpiCase
AF:
1.00
EpiControl
AF:
1.00

ClinVar

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

Submissions by phenotype

not provided Benign:2
Benign, criteria provided, single submitternot providedBreakthrough Genomics, Breakthrough Genomics-- -
Benign, criteria provided, single submitterclinical testingGeneDxApr 24, 2019- -
Neurodevelopmental disorder with hypotonia and cerebellar atrophy, with or without seizures Benign:1
Benign, criteria provided, single submitterclinical testingGenome-Nilou LabSep 05, 2021- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.89
CADD
Benign
2.0
DANN
Benign
0.35

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.000039
dbscSNV1_RF
Benign
0.032
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.

Other links and lift over

dbSNP: rs839825; hg19: chr1-77627096; API