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DDG2P

Gene: PIK3R1

Green List (high evidence)
PIK3R1 (phosphoinositide-3-kinase regulatory subunit 1)
EnsemblGeneIds (GRCh38): ENSG00000145675
EnsemblGeneIds (GRCh37): ENSG00000145675
OMIM: 171833, Gene2Phenotype
PIK3R1 is in 19 panels

2 reviews

Achchuthan Shanmugasundram (Genomics England Curator)

Green List (high evidence)

The DDG2P confidence category, allelic requirement and molecular mechanism for PIK3R1-related SHORT syndrome are definitive, monoallelic_autosomal and undetermined (PMIDs: 23810378, 23810379, 28472977). More details can be found in https://www.ebi.ac.uk/gene2phenotype/lgd/G2P00179. The DDG2P confidence category, allelic requirement and molecular mechanism for PIK3R1-related agammaglobulinemia are limited, biallelic_autosomal and loss of function (PMID:22351933). More details can be found in https://www.ebi.ac.uk/gene2phenotype/lgd/G2P00858.
Created: 13 Feb 2026, 9:26 p.m. | Last Modified: 13 Feb 2026, 9:26 p.m.
Panel Version: 6.17
The DDG2P confidence category for the disease AGAMMAGLOBULINEMIA 7, AUTOSOMAL RECESSIVE, OMIM:615214 is definitive. The allelic requirement and mutation consequence are biallelic_autosomal and absent gene product (PMID:22351933). The DDG2P confidence category for the disease SHORT SYNDROME, OMIM:269880 is definitive. The allelic requirement and mutation consequence are monoallelic_autosomal and altered gene product structure (PMIDs: 23810378;28472977;23810379).
Created: 4 Oct 2023, 5:08 p.m. | Last Modified: 4 Oct 2023, 5:08 p.m.
Panel Version: 3.12

Mode of inheritance
MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown

Phenotypes
SHORT SYNDROME, OMIM:269880; MONDO:0010026; MONDO:0014083; OMIM:615214.0; OMIM:269880.0; PIK3R1-related SHORT syndrome; AGAMMAGLOBULINEMIA 7, AUTOSOMAL RECESSIVE, OMIM:615214; PIK3R1-related agammaglobulinemia

Publications

Created: 4 Oct 2023, 5:08 p.m.
Last Modified: 4 Oct 2023, 5:08 p.m.
Panel version: 6.17

Rebecca Foulger (Genomics England curator)

I don't know

Comment on mode of inheritance: In DDG2P, MOI is listed as biallelic for AGAMMAGLOBULINEMIA 7, AUTOSOMAL RECESSIVE; monoallelic for SHORT SYNDROME. Both syndromes have a Disease confidence rating of 'confirmed'.
Created: 11 Jun 2019, 3:10 p.m.
Original DDG2P rating: confirmed (for all listed disorders). Multiple MOPs in DD-G2P download: all missense/in frame, loss of function. Multiple MOIs in DD-G2P download: monoallelic and biallelic.
Created: 19 Nov 2018, 11:30 a.m.
Created: 19 Nov 2018, 11:30 a.m.

Panel version: 0.2

History Filter Activity

13 Feb 2026, Gel status: 3

Set mode of inheritance

Achchuthan Shanmugasundram (Genomics England Curator)

Mode of inheritance for gene PIK3R1 was changed from BOTH monoallelic and biallelic, autosomal or pseudoautosomal to MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown

4 Oct 2023, Gel status: 3

Set publications

Achchuthan Shanmugasundram (Genomics England Curator)

Publications for gene: PIK3R1 were updated from 22351933 to 23810379; 28472977; 23810378; 22351933

11 Jun 2019, Gel status: 4

Set mode of inheritance

Rebecca Foulger (Genomics England curator)

Mode of inheritance for gene: PIK3R1 was changed from BOTH monoallelic and biallelic, autosomal or pseudoautosomal to BOTH monoallelic and biallelic, autosomal or pseudoautosomal

29 Jan 2019, Gel status: 4

Panel promoted to version 1.0

Rebecca Foulger (Genomics England curator)

Rebecca Foulger: Original DDG2P rating: confirm

19 Nov 2018, Gel status: 4

Set Phenotypes, Set publications

Rebecca Foulger (Genomics England curator)

Added phenotypes AGAMMAGLOBULINEMIA 7, AUTOSOMAL RECESSIVE 615214 for gene: PIK3R1 Publications for gene PIK3R1 were changed from 23810378 to 22351933

19 Nov 2018, Gel status: 4

Created, Added New Source, Set mode of inheritance, Set publications, Set Phenotypes

Rebecca Foulger (Genomics England curator)

gene: PIK3R1 was added gene: PIK3R1 was added to DDG2P. Sources: Expert Review Green,DD-Gene2Phenotype Mode of inheritance for gene: PIK3R1 was set to BOTH monoallelic and biallelic, autosomal or pseudoautosomal Publications for gene: PIK3R1 were set to 23810378 Phenotypes for gene: PIK3R1 were set to SHORT SYNDROME 269880