Genetic Variant PIK3R1:p.Gly376Arg (chr5-68293310-G-A) – ACMG Classification: Likely_pathogenic (7 pts)

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PM2PP3_StrongPP5

The NM_181523.3(PIK3R1):c.1126G>A(p.Gly376Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 13/22 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

Frequency

Genomes: not found (cov: 32)

Consequence

PIK3R1
NM_181523.3 missense

Scores

Clinical Significance

Pathogenic no assertion criteria provided P:1O:1

Conservation

PhyloP100: 10.0

Publications

77 publications found

Variant links:

Genes affected

PIK3R1 (HGNC:8979): (phosphoinositide-3-kinase regulatory subunit 1) Phosphatidylinositol 3-kinase phosphorylates the inositol ring of phosphatidylinositol at the 3-prime position. The enzyme comprises a 110 kD catalytic subunit and a regulatory subunit of either 85, 55, or 50 kD. This gene encodes the 85 kD regulatory subunit. Phosphatidylinositol 3-kinase plays an important role in the metabolic actions of insulin, and a mutation in this gene has been associated with insulin resistance. Alternative splicing of this gene results in four transcript variants encoding different isoforms. [provided by RefSeq, Jun 2011]

PIK3R1 Gene-Disease associations (from GenCC):

immunodeficiency 36 with lymphoproliferation
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
PIK3R1-related immunodeficiency and SHORT syndrome
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
SHORT syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: G2P, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Orphanet, Ambry Genetics, ClinGen
agammaglobulinemia 7, autosomal recessive
Inheritance: AR Classification: STRONG, LIMITED Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics, ClinGen
activated PI3K-delta syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
autosomal agammaglobulinemia
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

PIK3R1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 7 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.952

PP5

Variant 5-68293310-G-A is Pathogenic according to our data. Variant chr5-68293310-G-A is described in ClinVar as Pathogenic. ClinVar VariationId is 376064.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_181523.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
PIK3R1	NM_181523.3	MANE Select	c.1126G>A	p.Gly376Arg	missense	Exon 10 of 16	NP_852664.1	A0A2X0SFG1
PIK3R1	NM_181504.4		c.316G>A	p.Gly106Arg	missense	Exon 4 of 10	NP_852556.2
PIK3R1	NM_181524.2		c.226G>A	p.Gly76Arg	missense	Exon 4 of 10	NP_852665.1	P27986-3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
PIK3R1	ENST00000521381.6	TSL:1 MANE Select	c.1126G>A	p.Gly376Arg	missense	Exon 10 of 16	ENSP00000428056.1	P27986-1
PIK3R1	ENST00000336483.10	TSL:1	c.316G>A	p.Gly106Arg	missense	Exon 4 of 10	ENSP00000338554.5	P27986-2
PIK3R1	ENST00000320694.13	TSL:1	c.226G>A	p.Gly76Arg	missense	Exon 4 of 10	ENSP00000323512.8	P27986-3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Cov.:

GnomAD4 genome

Cov.:

ClinVar

ClinVar submissions

Significance:Pathogenic

Revision:no assertion criteria provided

View on ClinVar

Pathogenic

VUS

Benign

Condition

Vascular Malformations and Overgrowth (1)

Neoplasm (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

1.0

BayesDel_addAF

Pathogenic

0.54

BayesDel_noAF

Pathogenic

0.54

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Pathogenic

0.87

Eigen

Pathogenic

0.93

Eigen_PC

Pathogenic

0.89

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Pathogenic

0.99

M_CAP

Pathogenic

0.69

MetaRNN

Pathogenic

0.95

MetaSVM

Pathogenic

1.1

MutationAssessor

Uncertain

2.7

PhyloP100

PrimateAI

Pathogenic

0.94

PROVEAN

Pathogenic

-7.4

REVEL

Pathogenic

0.78

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0010

Polyphen

1.0

Vest4

0.77

MutPred

0.81

Gain of solvent accessibility (P = 0.019)

MVP

0.98

MPC

2.5

ClinPred

1.0

GERP RS

5.2

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.96

gMVP

0.82

Mutation Taster

=6/94

disease causing (ClinVar)

(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