chr11-17089857-T-C
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Variant summary
Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3
The NM_002645.4(PIK3C2A):āc.4942A>Gā(p.Ser1648Gly) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,124 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 (ā ).
Frequency
Genomes: not found (cov: 32)
Exomes š: 0.0000014 ( 0 hom. )
Consequence
PIK3C2A
NM_002645.4 missense
NM_002645.4 missense
Scores
4
5
10
Clinical Significance
Conservation
PhyloP100: 7.97
Genes affected
PIK3C2A (HGNC:8971): (phosphatidylinositol-4-phosphate 3-kinase catalytic subunit type 2 alpha) The protein encoded by this gene belongs to the phosphoinositide 3-kinase (PI3K) family. PI3-kinases play roles in signaling pathways involved in cell proliferation, oncogenic transformation, cell survival, cell migration, and intracellular protein trafficking. This protein contains a lipid kinase catalytic domain as well as a C-terminal C2 domain, a characteristic of class II PI3-kinases. C2 domains act as calcium-dependent phospholipid binding motifs that mediate translocation of proteins to membranes, and may also mediate protein-protein interactions. The PI3-kinase activity of this protein is not sensitive to nanomolar levels of the inhibitor wortmanin. This protein was shown to be able to be activated by insulin and may be involved in integrin-dependent signaling. [provided by RefSeq, Jul 2008]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 3 ACMG points.
PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.828
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
PIK3C2A | NM_002645.4 | c.4942A>G | p.Ser1648Gly | missense_variant | 33/33 | ENST00000691414.1 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
PIK3C2A | ENST00000691414.1 | c.4942A>G | p.Ser1648Gly | missense_variant | 33/33 | NM_002645.4 | P1 | ||
PIK3C2A | ENST00000265970.11 | c.4942A>G | p.Ser1648Gly | missense_variant | 32/32 | 1 | P1 | ||
PIK3C2A | ENST00000531428.1 | n.1400+1477A>G | intron_variant, non_coding_transcript_variant | 1 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD3 genomes
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32
GnomAD3 exomes AF: 0.00000399 AC: 1AN: 250470Hom.: 0 AF XY: 0.00000738 AC XY: 1AN XY: 135416
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GnomAD4 exome AF: 0.00000137 AC: 2AN: 1461124Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1AN XY: 726906
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GnomAD4 genome Cov.: 32
GnomAD4 genome
Cov.:
32
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | May 12, 2022 | This sequence change replaces serine, which is neutral and polar, with glycine, which is neutral and non-polar, at codon 1648 of the PIK3C2A protein (p.Ser1648Gly). This variant is present in population databases (no rsID available, gnomAD 0.003%). This variant has not been reported in the literature in individuals affected with PIK3C2A-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Not Available"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Not Available"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
CADD
Pathogenic
DANN
Uncertain
DEOGEN2
Uncertain
D
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Pathogenic
D
LIST_S2
Benign
D
M_CAP
Benign
T
MetaRNN
Pathogenic
D
MetaSVM
Benign
T
MutationAssessor
Benign
L
MutationTaster
Benign
D;D
PrimateAI
Uncertain
T
PROVEAN
Uncertain
D
REVEL
Uncertain
Sift
Benign
D
Sift4G
Benign
T
Polyphen
D
Vest4
MutPred
Loss of phosphorylation at S1648 (P = 0.0538);
MVP
MPC
ClinPred
D
GERP RS
RBP_binding_hub_radar
RBP_regulation_power_radar
Varity_R
gMVP
Splicing
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Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at