rs374303086

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_StrongBS1

The NM_004855.5(PIGB):​c.1630T>A​(p.Leu544Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000342 in 1,608,882 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. 17/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. L544L) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000039 ( 1 hom., cov: 32)
Exomes 𝑓: 0.000034 ( 1 hom. )

Consequence

PIGB
NM_004855.5 missense

Scores

1
18

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.82

Publications

0 publications found
Variant links:
Genes affected
PIGB (HGNC:8959): (phosphatidylinositol glycan anchor biosynthesis class B) This gene encodes a transmembrane protein that is located in the endoplasmic reticulum and is involved in GPI-anchor biosynthesis. The glycosylphosphatidylinositol (GPI) anchor is a glycolipid found on many blood cells and serves to anchor proteins to the cell surface. This gene is thought to encode a member of a family of dolichol-phosphate-mannose (Dol-P-Man) dependent mannosyltransferases. [provided by RefSeq, Jul 2008]
CCPG1 (HGNC:24227): (cell cycle progression 1) Involved in positive regulation of cell cycle and positive regulation of cell population proliferation. Predicted to be integral component of membrane. Predicted to be active in membrane. [provided by Alliance of Genome Resources, Apr 2022]
DNAAF4-CCPG1 (HGNC:43019): (DNAAF4-CCPG1 readthrough (NMD candidate)) This locus represents naturally occurring read-through transcription between the neighboring dyslexia susceptibility 1 candidate 1 (DYX1C1) and cell cycle progression 1 (CCPG1) genes on chromosome 15. The read-through transcript is a candidate for nonsense-mediated mRNA decay (NMD), and is thus unlikely to produce a protein product. [provided by RefSeq, Mar 2011]

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -8 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.030917168).
BS1
Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.0000394 (6/152246) while in subpopulation SAS AF = 0.00124 (6/4824). AF 95% confidence interval is 0.000541. There are 1 homozygotes in GnomAd4. There are 5 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
PIGBNM_004855.5 linkc.1630T>A p.Leu544Ile missense_variant Exon 12 of 12 ENST00000164305.10 NP_004846.4 Q92521
CCPG1NM_001204450.2 linkc.*823A>T 3_prime_UTR_variant Exon 9 of 9 ENST00000442196.8 NP_001191379.1 Q9ULG6-5

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
PIGBENST00000164305.10 linkc.1630T>A p.Leu544Ile missense_variant Exon 12 of 12 1 NM_004855.5 ENSP00000164305.5 Q92521
CCPG1ENST00000442196.8 linkc.*823A>T 3_prime_UTR_variant Exon 9 of 9 2 NM_001204450.2 ENSP00000403400.3 Q9ULG6-5

Frequencies

GnomAD3 genomes
AF:
0.0000394
AC:
6
AN:
152128
Hom.:
1
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00124
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.00
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000702
AC:
17
AN:
242002
AF XY:
0.000107
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000336
AC:
49
AN:
1456636
Hom.:
1
Cov.:
29
AF XY:
0.0000580
AC XY:
42
AN XY:
724476
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33290
American (AMR)
AF:
0.00
AC:
0
AN:
43746
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26008
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39528
South Asian (SAS)
AF:
0.000541
AC:
46
AN:
85098
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53330
Middle Eastern (MID)
AF:
0.000174
AC:
1
AN:
5748
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1109732
Other (OTH)
AF:
0.0000332
AC:
2
AN:
60156
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.477
Heterozygous variant carriers
0
3
5
8
10
13
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<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:
0.0000394
AC:
6
AN:
152246
Hom.:
1
Cov.:
32
AF XY:
0.0000672
AC XY:
5
AN XY:
74446
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41534
American (AMR)
AF:
0.00
AC:
0
AN:
15298
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5182
South Asian (SAS)
AF:
0.00124
AC:
6
AN:
4824
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10612
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
68010
Other (OTH)
AF:
0.00
AC:
0
AN:
2110
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.500
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<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:
0.00
Hom.:
0
ExAC
AF:
0.0000994
AC:
12

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.071
BayesDel_addAF
Benign
-0.42
T
BayesDel_noAF
Benign
-0.49
CADD
Benign
14
DANN
Benign
0.94
DEOGEN2
Benign
0.0020
T;T
Eigen
Benign
-0.42
Eigen_PC
Benign
-0.40
FATHMM_MKL
Uncertain
0.86
D
LIST_S2
Benign
0.47
T;T
M_CAP
Benign
0.013
T
MetaRNN
Benign
0.031
T;T
MetaSVM
Benign
-0.98
T
MutationAssessor
Benign
1.6
L;.
PhyloP100
1.8
PrimateAI
Benign
0.34
T
PROVEAN
Benign
-0.24
N;.
REVEL
Benign
0.071
Sift
Benign
0.082
T;.
Sift4G
Benign
0.15
T;T
Polyphen
0.14
B;.
Vest4
0.13
MutPred
0.24
Loss of sheet (P = 0.0357);.;
MVP
0.52
MPC
0.045
ClinPred
0.032
T
GERP RS
1.2
Varity_R
0.040
gMVP
0.16
Mutation Taster
=98/2
polymorphism

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

Other links and lift over

dbSNP: rs374303086; hg19: chr15-55647595; COSMIC: COSV108034516; COSMIC: COSV108034516; API