12-18293984-A-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001288772.2(PIK3C2G):c.1003A>C(p.Ser335Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000238 in 1,589,380 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00015 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00025 ( 1 hom. )

Consequence

PIK3C2G
NM_001288772.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.73

Variant links:

Genes affected

PIK3C2G (HGNC:8973): (phosphatidylinositol-4-phosphate 3-kinase catalytic subunit type 2 gamma) 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. This gene may play a role in several diseases, including type II diabetes. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2014]

PIK3C2G links:

LOC124902890 (HGNC:):

LOC124902890 links:

RERGL (HGNC:26213): (RERG like) Predicted to enable G protein activity and GTP binding activity. [provided by Alliance of Genome Resources, Apr 2022]

RERGL links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.17054349).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PIK3C2G	NM_001288772.2 linkuse as main transcript	c.1003A>C	p.Ser335Arg	missense_variant	5/33	ENST00000538779.6
LOC124902890	XR_007063233.1 linkuse as main transcript	n.159+2998T>G		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PIK3C2G	ENST00000538779.6 linkuse as main transcript	c.1003A>C	p.Ser335Arg	missense_variant	5/33	5	NM_001288772.2	P1

Frequencies

GnomAD3 genomes

AF:

0.000151

AC:

AN:

152076

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

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:

0.000309

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000768

AC:

AN:

247402

Hom.:

AF XY:

0.0000745

AC XY:

AN XY:

134198

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000292

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000152

Gnomad OTH exome

AF:

0.000167

GnomAD4 exome

AF:

0.000247

AC:

355

AN:

1437304

Hom.:

Cov.:

AF XY:

0.000216

AC XY:

155

AN XY:

716506

show subpopulations

Gnomad4 AFR exome

AF:

0.0000303

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000288

Gnomad4 OTH exome

AF:

0.000672

GnomAD4 genome

AF:

0.000151

AC:

AN:

152076

Hom.:

Cov.:

AF XY:

0.000108

AC XY:

AN XY:

74286

show subpopulations

Gnomad4 AFR

AF:

0.0000483

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000309

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000268

Hom.:

Bravo

AF:

0.000125

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000246

AC:

ExAC

AF:

0.0000662

AC:

EpiCase

AF:

0.000600

EpiControl

AF:

0.000119

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 14, 2023

The c.1003A>C (p.S335R) alteration is located in exon 5 (coding exon 4) of the PIK3C2G gene. This alteration results from a A to C substitution at nucleotide position 1003, causing the serine (S) at amino acid position 335 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.32

BayesDel_addAF

Benign

-0.29

BayesDel_noAF

Benign

-0.39

Cadd

Benign

Dann

Benign

0.97

DEOGEN2

Benign

0.19

T;.;T;T

Eigen

Benign

-0.44

Eigen_PC

Benign

-0.54

FATHMM_MKL

Benign

0.22

LIST_S2

Benign

0.74

T;T;T;.

M_CAP

Benign

0.010

MetaRNN

Benign

0.17

T;T;T;T

MetaSVM

Benign

-1.0

MutationTaster

Benign

1.0

N;N;N;N

PrimateAI

Benign

0.35

PROVEAN

Benign

0.15

N;N;N;N

REVEL

Benign

0.088

Sift

Benign

0.046

D;D;D;D

Sift4G

Uncertain

0.0080

D;T;T;T

Polyphen

0.51, 0.26

.;P;B;B

Vest4

0.47

MutPred

0.44

Gain of catalytic residue at S335 (P = 0.0043);Gain of catalytic residue at S335 (P = 0.0043);Gain of catalytic residue at S335 (P = 0.0043);Gain of catalytic residue at S335 (P = 0.0043);

MVP

0.41

MPC

0.013

ClinPred

0.12

GERP RS

1.8

Varity_R

0.11

gMVP

0.32

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over