Genetic Variant PIK3C2G:p.Thr74Ile (chr12-18282302-C-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001288772.2(PIK3C2G):c.221C>T(p.Thr74Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Consequence

PIK3C2G
NM_001288772.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.190

Publications

0 publications found

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:

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:

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ACMG classification

Classification was made for transcript

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

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.054419994).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001288772.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
PIK3C2G	NM_001288772.2	MANE Select	c.221C>T	p.Thr74Ile	missense	Exon 2 of 33	NP_001275701.1	O75747-1
PIK3C2G	NM_004570.6		c.221C>T	p.Thr74Ile	missense	Exon 2 of 32	NP_004561.3	O75747-2
PIK3C2G	NM_001288774.2		c.-439C>T		5_prime_UTR	Exon 2 of 33	NP_001275703.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
PIK3C2G	ENST00000538779.6	TSL:5 MANE Select	c.221C>T	p.Thr74Ile	missense	Exon 2 of 33	ENSP00000445381.1	O75747-1
PIK3C2G	ENST00000546003.5	TSL:1	n.221C>T		non_coding_transcript_exon	Exon 1 of 32	ENSP00000441618.1	F5GWG6
PIK3C2G	ENST00000675017.1		c.221C>T	p.Thr74Ile	missense	Exon 2 of 33	ENSP00000501889.1	O75747-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Cov.:

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.084

BayesDel_addAF

Benign

-0.29

BayesDel_noAF

Benign

-0.66

CADD

Benign

0.14

(source)

DANN

Benign

0.94

DEOGEN2

Benign

0.0099

Eigen

Benign

-1.5

Eigen_PC

Benign

-1.5

FATHMM_MKL

Benign

0.014

LIST_S2

Benign

0.56

M_CAP

Benign

0.023

MetaRNN

Benign

0.054

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.0

PhyloP100

0.19

PrimateAI

Benign

0.22

PROVEAN

Benign

-1.0

REVEL

Benign

0.055

Sift

Uncertain

0.0070

Sift4G

Uncertain

0.019

Polyphen

0.053

Vest4

0.094

MutPred

0.35

Gain of catalytic residue at T74 (P = 4e-04)

MVP

0.29

MPC

0.013

ClinPred

0.19

GERP RS

-3.5

PromoterAI

-0.013

Neutral

(source)

Varity_R

0.043

gMVP

0.084

Mutation Taster

=95/5

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over