rs929839260

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PP3_ModerateBS2

The NM_003629.4(PIK3R3):​c.796C>T​(p.Arg266Cys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000877 in 1,596,678 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R266H) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000090 ( 0 hom. )

Consequence

PIK3R3
NM_003629.4 missense

Scores

13
5

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 10.0

Publications

1 publications found
Variant links:
Genes affected
PIK3R3 (HGNC:8981): (phosphoinositide-3-kinase regulatory subunit 3) Phosphatidylinositol 3-kinase (PI3K) phosphorylates phosphatidylinositol and similar compounds, which then serve as second messengers in growth signaling pathways. PI3K is composed of a catalytic and a regulatory subunit. The protein encoded by this gene represents a regulatory subunit of PI3K. The encoded protein contains two SH2 domains through which it binds activated protein tyrosine kinases to regulate their activity. [provided by RefSeq, Jun 2016]
P3R3URF-PIK3R3 (HGNC:54999): (P3R3URF-PIK3R3 readthrough) This locus represents naturally occurring readthrough transcription between the neighboring genes LOC110117498 and PIK3R3. The readthrough transcript encodes a fusion protein that shares sequence identity with each individual gene product. [provided by RefSeq, Apr 2017]

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PP3
MetaRNN computational evidence supports a deleterious effect, 0.898
BS2
High AC in GnomAdExome4 at 13 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003629.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
PIK3R3
NM_003629.4
MANE Select
c.796C>Tp.Arg266Cys
missense
Exon 7 of 10NP_003620.3
P3R3URF-PIK3R3
NM_001303427.2
c.934C>Tp.Arg312Cys
missense
Exon 7 of 10NP_001290356.1F6TDL0
PIK3R3
NM_001303428.1
c.847C>Tp.Arg283Cys
missense
Exon 8 of 11NP_001290357.1B4DXM8

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
PIK3R3
ENST00000262741.10
TSL:1 MANE Select
c.796C>Tp.Arg266Cys
missense
Exon 7 of 10ENSP00000262741.5Q92569-1
P3R3URF-PIK3R3
ENST00000540385.2
TSL:2
c.934C>Tp.Arg312Cys
missense
Exon 7 of 10ENSP00000439913.1F6TDL0
PIK3R3
ENST00000372006.5
TSL:1
c.796C>Tp.Arg266Cys
missense
Exon 8 of 11ENSP00000361075.1Q92569-1

Frequencies

GnomAD3 genomes
AF:
0.00000658
AC:
1
AN:
151952
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000242
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
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:
0.00
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000169
AC:
4
AN:
236062
AF XY:
0.0000156
show subpopulations
Gnomad AFR exome
AF:
0.000126
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:
0.00000916
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000900
AC:
13
AN:
1444726
Hom.:
0
Cov.:
29
AF XY:
0.00000973
AC XY:
7
AN XY:
719382
show subpopulations
African (AFR)
AF:
0.0000934
AC:
3
AN:
32132
American (AMR)
AF:
0.00
AC:
0
AN:
40772
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25452
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39486
South Asian (SAS)
AF:
0.0000237
AC:
2
AN:
84330
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
52510
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5678
European-Non Finnish (NFE)
AF:
0.00000724
AC:
8
AN:
1104746
Other (OTH)
AF:
0.00
AC:
0
AN:
59620
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.456
Heterozygous variant carriers
0
1
2
2
3
4
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:
0.00000658
AC:
1
AN:
151952
Hom.:
0
Cov.:
32
AF XY:
0.0000135
AC XY:
1
AN XY:
74234
show subpopulations
⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.
African (AFR)
AF:
0.0000242
AC:
1
AN:
41326
American (AMR)
AF:
0.00
AC:
0
AN:
15262
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3468
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5194
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4818
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10572
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
67998
Other (OTH)
AF:
0.00
AC:
0
AN:
2086
⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.275
Heterozygous variant carriers
0
0
1
1
2
2
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
Bravo
AF:
0.0000302

ClinVar

ClinVar submissions as Germline
Significance:Uncertain significance
Revision:criteria provided, single submitter
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
1
-
not specified (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.96
BayesDel_addAF
Pathogenic
0.28
D
BayesDel_noAF
Pathogenic
0.40
CADD
Pathogenic
32
DANN
Pathogenic
1.0
DEOGEN2
Uncertain
0.66
D
Eigen
Pathogenic
0.88
Eigen_PC
Pathogenic
0.85
FATHMM_MKL
Pathogenic
0.99
D
LIST_S2
Uncertain
0.96
D
M_CAP
Uncertain
0.18
D
MetaRNN
Pathogenic
0.90
D
MetaSVM
Uncertain
0.69
D
MutationAssessor
Uncertain
2.8
M
PhyloP100
10
PrimateAI
Pathogenic
0.84
D
PROVEAN
Pathogenic
-7.0
D
REVEL
Pathogenic
0.84
Sift
Pathogenic
0.0
D
Sift4G
Pathogenic
0.0
D
Polyphen
0.99
D
Vest4
0.92
MVP
0.98
MPC
0.61
ClinPred
0.99
D
GERP RS
5.1
Varity_R
0.85
gMVP
0.80
Mutation Taster
=7/93
disease causing

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.040
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: rs929839260; hg19: chr1-46521612; API