Genetic Variant PIK3R4:p.Ile1201Thr (chr3-130684255-A-G) – ACMG Classification: Likely_benign (-5 pts)

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4BS2

The NM_014602.3(PIK3R4):c.3602T>C(p.Ile1201Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000447 in 1,611,188 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000045 ( 2 hom. )

Consequence

PIK3R4
NM_014602.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.25

Variant links:

Genes affected

PIK3R4 (HGNC:8982): (phosphoinositide-3-kinase regulatory subunit 4) Predicted to enable protein serine/threonine kinase activity. Involved in positive regulation of phosphatidylinositol 3-kinase activity; receptor catabolic process; and regulation of cytokinesis. Located in late endosome and microtubule cytoskeleton. [provided by Alliance of Genome Resources, Apr 2022]

PIK3R4 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.343117).

BS2

High AC in GnomAd4 at 7 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PIK3R4	NM_014602.3 link	c.3602T>C	p.Ile1201Thr	missense_variant	Exon 16 of 20	ENST00000356763.8	NP_055417.1	Q99570

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
PIK3R4	ENST00000356763.8 link	c.3602T>C	p.Ile1201Thr	missense_variant	Exon 16 of 20	1	NM_014602.3	ENSP00000349205.3	Q99570
PIK3R4	ENST00000512362.5 link	n.332T>C		non_coding_transcript_exon_variant	Exon 2 of 5	2
PIK3R4	ENST00000512677.1 link	n.431T>C		non_coding_transcript_exon_variant	Exon 3 of 6	3

Frequencies

GnomAD3 genomes

AF:

0.0000460

AC:

AN:

152194

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000622

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000720

AC:

AN:

250078

Hom.:

AF XY:

0.000126

AC XY:

AN XY:

135124

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 SAS exome

AF:

0.000425

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000355

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.0000446

AC:

AN:

1458994

Hom.:

Cov.:

AF XY:

0.0000675

AC XY:

AN XY:

725630

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000449

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000571

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000991

Gnomad4 OTH exome

AF:

0.0000498

GnomAD4 genome

AF:

0.0000460

AC:

AN:

152194

Hom.:

Cov.:

AF XY:

0.0000807

AC XY:

AN XY:

74354

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000196

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000622

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000567

ExAC

AF:

0.0000741

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Sep 10, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.3602T>C (p.I1201T) alteration is located in exon 16 (coding exon 15) of the PIK3R4 gene. This alteration results from a T to C substitution at nucleotide position 3602, causing the isoleucine (I) at amino acid position 1201 to be replaced by a threonine (T). 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

0.29

BayesDel_addAF

Benign

-0.18

BayesDel_noAF

Benign

-0.17

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.22

Eigen

Benign

0.020

Eigen_PC

Benign

0.16

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.86

M_CAP

Benign

0.013

MetaRNN

Benign

0.34

MetaSVM

Benign

-0.94

MutationAssessor

Uncertain

2.4

PrimateAI

Pathogenic

0.83

PROVEAN

Uncertain

-3.3

REVEL

Uncertain

0.30

Sift

Uncertain

0.022

Sift4G

Uncertain

0.015

Polyphen

0.053

Vest4

0.81

MutPred

0.55

Loss of stability (P = 0.0625);

MVP

0.48

MPC

0.30

ClinPred

0.18

GERP RS

4.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.31

gMVP

0.66

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

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