PIK3CD

phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit delta, the group of Phosphatidylinositol 3-kinase subunits

Basic information

Region (hg38): 1:9629889-9729114

Links

ENSG00000171608NCBI:5293OMIM:602839HGNC:8977Uniprot:O00329AlphaFoldGenCCjaxSfariGnomADPubmedClinVar

Phenotypes

GenCC

Source: genCC

  • activated PI3K-delta syndrome (Supportive), mode of inheritance: AD
  • immunodeficiency 14 (Strong), mode of inheritance: AD
  • immunodeficiency 14b, autosomal recessive (Limited), mode of inheritance: Unknown
  • immunodeficiency 14b, autosomal recessive (Definitive), mode of inheritance: AR
  • immunodeficiency 14 (Definitive), mode of inheritance: AD

Clinical Genomic Database

Source: CGD

ConditionInheritanceIntervention CategoriesIntervention/Rationale Manifestation CategoriesReferences
Immunodeficiency 14A with lymphoproliferation, autosomal dominant; Immunodeficiency 14B, autosomal recessiveAD/ARAllergy/Immunology/Infectious; OncologicIndividuals with Immunodeficiency 14A and Immunodeficiency 14B have been described as having a primary immunodeficiency, with susceptibility to respiratory and other infections, and antiinfectious prophylaxis and early and aggressive treatment of infections may be beneficial; In Immunodeficiency 14A with lymphoproliferation, autosomal dominant, medical management (with leniolisib, a small molecule inhibitor) has been shown to be beneficial related to immunoproliferation and via immunophenotyping; Individuals with Immunodeficiency 14A, autosomal dominant have been described as developing lymphoma, and awareness may allow early recognition and managementAllergy/Immunology/Infectious; Oncologic24136356; 24165795; 24610295; 28972011; 30040974; 30018075; 30336224; 36399712
Biallelic variants, along with biallelic variants in KNSTRN, have been described as causing Roifman-Chitayat syndrome, digenic

ClinVar

This is a list of variants' phenotypes submitted to ClinVar and linked to the PIK3CD gene.

  • Immunodeficiency 14 (5 variants)
  • not provided (2 variants)
  • Immunodeficiency 14;Combined immunodeficiency with faciooculoskeletal anomalies;Immunodeficiency 14b, autosomal recessive (1 variants)
  • Inborn genetic diseases (1 variants)
  • Inherited Immunodeficiency Diseases (1 variants)

Variants pathogenicity by type

Statistics on ClinVar variants can assist in determining whether a specific variant type in the PIK3CD gene is commonly pathogenic or not.

In the table, we include only reliable ClinVar variants with their consequences to MANE Select, Mane Plus Clinical transcripts, or transcripts with TSL equals 1. Click the count to view the source variants.

Warning: slight differences between displayed counts and the number of variants in ClinVar may occur, primarily due to (1) the application of a different transcript and/or consequence by our variant effect predictor or (2) differences in clinical significance: we classify Benign/Likely benign variants as Likely benign and Pathogenic/Likely pathogenic variants as Likely pathogenic.

Variant type Pathogenic Likely pathogenic VUS Likely benign Benign Sum
synonymous
5
clinvar
249
clinvar
17
clinvar
271
missense
5
clinvar
3
clinvar
274
clinvar
9
clinvar
3
clinvar
294
nonsense
5
clinvar
5
start loss
0
frameshift
2
clinvar
5
clinvar
7
inframe indel
2
clinvar
2
splice donor/acceptor (+/-2bp)
3
clinvar
3
splice region
23
35
7
65
non coding
7
clinvar
123
clinvar
30
clinvar
160
Total 5 5 301 381 50

Variants in PIK3CD

This is a list of pathogenic ClinVar variants found in the PIK3CD region.

You can filter this list by clicking the number of variants in the Variants pathogenicity by type table.

Position Type Phenotype Significance ClinVar
1-9654282-C-T Benign (Aug 01, 2024)2638188
1-9654307-G-A Likely benign (Jun 01, 2023)2638189
1-9654484-G-C not specified Benign/Likely benign (-)982099
1-9710459-C-A Immunodeficiency 14 Likely benign (Jan 10, 2024)1138980
1-9710460-C-T Immunodeficiency 14 Uncertain significance (Jun 29, 2023)943206
1-9710461-C-T Immunodeficiency 14 Likely benign (Sep 11, 2018)751906
1-9710463-C-T Immunodeficiency 14 Uncertain significance (Oct 24, 2022)1384937
1-9710467-G-A Immunodeficiency 14 Likely benign (Dec 22, 2021)2180356
1-9710467-G-T Immunodeficiency 14 Likely benign (Jun 14, 2023)2880397
1-9710472-A-C Immunodeficiency 14 Uncertain significance (Nov 07, 2023)1019034
1-9710472-A-G Immunodeficiency 14 Uncertain significance (Nov 27, 2023)1011232
1-9710479-C-A Immunodeficiency 14 Likely benign (Oct 19, 2020)749014
1-9710485-A-C Immunodeficiency 14 • PIK3CD-related disorder Uncertain significance (Oct 04, 2023)2146657
1-9710494-C-G Immunodeficiency 14 Likely benign (Apr 02, 2022)1106990
1-9710496-A-C Immunodeficiency 14 Uncertain significance (Oct 08, 2019)966147
1-9710512-C-T Immunodeficiency 14 Likely benign (Nov 13, 2023)1161080
1-9710513-G-A Immunodeficiency 14 Uncertain significance (Nov 06, 2023)1359338
1-9710517-T-C Immunodeficiency 14 Uncertain significance (Jul 18, 2023)1352150
1-9710524-C-T Immunodeficiency 14 Likely benign (Aug 15, 2022)2170085
1-9710530-G-C Immunodeficiency 14 Likely benign (Aug 07, 2023)2027690
1-9710531-C-T Immunodeficiency 14 Likely benign (Nov 01, 2022)1544902
1-9710539-A-G Immunodeficiency 14 Likely benign (Nov 11, 2019)1088925
1-9710542-G-C Immunodeficiency 14 Likely benign (Aug 29, 2022)2191477
1-9710554-C-T Immunodeficiency 14 Likely benign (Oct 22, 2023)2101052
1-9710558-CCT-C Immunodeficiency 14 Uncertain significance (Mar 24, 2023)2849187

GnomAD

Source: gnomAD

GeneTypeBio TypeTranscript Coding Exons Length
PIK3CDprotein_codingprotein_codingENST00000377346 2277383
pLI Probability
LOF Intolerant
pRec Probability
LOF Recessive
Individuals with
no LOFs
Individuals with
Homozygous LOFs
Individuals with
Heterozygous LOFs
Defined p
1.000.00001331257320161257480.0000636
Z-Score Observed Expected Observed/Expected Mutation Rate Total Possible in Transcript
Missense4.273316340.5220.00004596842
Missense in Polyphen76247.340.307272855
Synonymous-1.163082831.090.00002162058
Loss of Function6.15553.60.09330.00000281583

LoF frequencies by population

EthnicitySum of pLOFs p
African & African-American0.0001200.000119
Ashkenazi Jewish0.000.00
East Asian0.000.00
Finnish0.000.00
European (Non-Finnish)0.0001160.000105
Middle Eastern0.000.00
South Asian0.00003280.0000327
Other0.000.00

dbNSFP

Source: dbNSFP

Function
FUNCTION: Phosphoinositide-3-kinase (PI3K) that phosphorylates PftdIns(4,5)P2 (Phosphatidylinositol 4,5-bisphosphate) to generate phosphatidylinositol 3,4,5-trisphosphate (PIP3). PIP3 plays a key role by recruiting PH domain-containing proteins to the membrane, including AKT1 and PDPK1, activating signaling cascades involved in cell growth, survival, proliferation, motility and morphology. Mediates immune responses. Plays a role in B-cell development, proliferation, migration, and function. Required for B-cell receptor (BCR) signaling. Mediates B-cell proliferation response to anti-IgM, anti-CD40 and IL4 stimulation. Promotes cytokine production in response to TLR4 and TLR9. Required for antibody class switch mediated by TLR9. Involved in the antigen presentation function of B-cells. Involved in B-cell chemotaxis in response to CXCL13 and sphingosine 1-phosphate (S1P). Required for proliferation, signaling and cytokine production of naive, effector and memory T-cells. Required for T-cell receptor (TCR) signaling. Mediates TCR signaling events at the immune synapse. Activation by TCR leads to antigen-dependent memory T-cell migration and retention to antigenic tissues. Together with PIK3CG participates in T-cell development. Contributes to T-helper cell expansion and differentiation. Required for T-cell migration mediated by homing receptors SELL/CD62L, CCR7 and S1PR1 and antigen dependent recruitment of T-cells. Together with PIK3CG is involved in natural killer (NK) cell development and migration towards the sites of inflammation. Participates in NK cell receptor activation. Have a role in NK cell maturation and cytokine production. Together with PIK3CG is involved in neutrophil chemotaxis and extravasation. Together with PIK3CG participates in neutrophil respiratory burst. Have important roles in mast-cell development and mast cell mediated allergic response. Involved in stem cell factor (SCF)-mediated proliferation, adhesion and migration. Required for allergen-IgE-induced degranulation and cytokine release. The lipid kinase activity is required for its biological function. Isoform 2 may be involved in stabilizing total RAS levels, resulting in increased ERK phosphorylation and increased PI3K activity. {ECO:0000269|PubMed:20081091, ECO:0000269|PubMed:22020336}.;
Disease
DISEASE: Activated PI3K-delta syndrome (APDS) [MIM:615513]: A disorder characterized by recurrent respiratory infections, progressive airway damage, lymphopenia, increased circulating transitional B cells, increased immunoglobulin M, reduced immunoglobulin G2 levels in serum, and impaired vaccine responses. {ECO:0000269|PubMed:24136356}. Note=The disease is caused by mutations affecting the gene represented in this entry.;
Pathway
PI3K-Akt signaling pathway - Homo sapiens (human);Inflammatory mediator regulation of TRP channels - Homo sapiens (human);Non-small cell lung cancer - Homo sapiens (human);Platelet activation - Homo sapiens (human);Chronic myeloid leukemia - Homo sapiens (human);Gastric cancer - Homo sapiens (human);Focal adhesion - Homo sapiens (human);mTOR signaling pathway - Homo sapiens (human);Relaxin signaling pathway - Homo sapiens (human);Regulation of lipolysis in adipocytes - Homo sapiens (human);T cell receptor signaling pathway - Homo sapiens (human);B cell receptor signaling pathway - Homo sapiens (human);Fc epsilon RI signaling pathway - Homo sapiens (human);Fc gamma R-mediated phagocytosis - Homo sapiens (human);Kaposi,s sarcoma-associated herpesvirus infection - Homo sapiens (human);Renal cell carcinoma - Homo sapiens (human);Inositol phosphate metabolism - Homo sapiens (human);VEGF signaling pathway - Homo sapiens (human);Neurotrophin signaling pathway - Homo sapiens (human);Central carbon metabolism in cancer - Homo sapiens (human);Choline metabolism in cancer - Homo sapiens (human);Melanoma - Homo sapiens (human);Type II diabetes mellitus - Homo sapiens (human);Insulin resistance - Homo sapiens (human);Non-alcoholic fatty liver disease (NAFLD) - Homo sapiens (human);AGE-RAGE signaling pathway in diabetic complications - Homo sapiens (human);HIF-1 signaling pathway - Homo sapiens (human);Jak-STAT signaling pathway - Homo sapiens (human);Longevity regulating pathway - multiple species - Homo sapiens (human);Small cell lung cancer - Homo sapiens (human);Influenza A - Homo sapiens (human);Acute myeloid leukemia - Homo sapiens (human);Breast cancer - Homo sapiens (human);ErbB signaling pathway - Homo sapiens (human);Autophagy - animal - Homo sapiens (human);Carbohydrate digestion and absorption - Homo sapiens (human);FoxO signaling pathway - Homo sapiens (human);TNF signaling pathway - Homo sapiens (human);Chemokine signaling pathway - Homo sapiens (human);HTLV-I infection - Homo sapiens (human);Amoebiasis - Homo sapiens (human);Regulation of actin cytoskeleton - Homo sapiens (human);Axon guidance - Homo sapiens (human);AMPK signaling pathway - Homo sapiens (human);Signaling pathways regulating pluripotency of stem cells - Homo sapiens (human);Hepatocellular carcinoma - Homo sapiens (human);Glioma - Homo sapiens (human);Thyroid hormone signaling pathway - Homo sapiens (human);Prostate cancer - Homo sapiens (human);Longevity regulating pathway - Homo sapiens (human);Chagas disease (American trypanosomiasis) - Homo sapiens (human);Toll-like receptor signaling pathway - Homo sapiens (human);cAMP signaling pathway - Homo sapiens (human);Estrogen signaling pathway - Homo sapiens (human);Fluid shear stress and atherosclerosis - Homo sapiens (human);C-type lectin receptor signaling pathway - Homo sapiens (human);Aldosterone-regulated sodium reabsorption - Homo sapiens (human);Rap1 signaling pathway - Homo sapiens (human);Ras signaling pathway - Homo sapiens (human);Natural killer cell mediated cytotoxicity - Homo sapiens (human);Sphingolipid signaling pathway - Homo sapiens (human);Phosphatidylinositol signaling system - Homo sapiens (human);Phospholipase D signaling pathway - Homo sapiens (human);Bacterial invasion of epithelial cells - Homo sapiens (human);Proteoglycans in cancer - Homo sapiens (human);Prolactin signaling pathway - Homo sapiens (human);Pathways in cancer - Homo sapiens (human);Viral carcinogenesis - Homo sapiens (human);Hepatitis C - Homo sapiens (human);Hepatitis B - Homo sapiens (human);Measles - Homo sapiens (human);Osteoclast differentiation - Homo sapiens (human);Apoptosis - Homo sapiens (human);Cellular senescence - Homo sapiens (human);Cholinergic synapse - Homo sapiens (human);Epstein-Barr virus infection - Homo sapiens (human);Pancreatic cancer - Homo sapiens (human);Endometrial cancer - Homo sapiens (human);Colorectal cancer - Homo sapiens (human);Insulin signaling pathway - Homo sapiens (human);EGFR Inhibitor Pathway, Pharmacodynamics;Human papillomavirus infection - Homo sapiens (human);Leukocyte transendothelial migration - Homo sapiens (human);Progesterone-mediated oocyte maturation - Homo sapiens (human);Anti-diabetic Drug Potassium Channel Inhibitors Pathway, Pharmacodynamics;Sorafenib Pharmacodynamics;Phosphatidylinositol Phosphate Metabolism;Joubert syndrome;AMP-activated Protein Kinase (AMPK) Signaling;Regulation of toll-like receptor signaling pathway;MicroRNAs in cardiomyocyte hypertrophy;Angiogenesis overview;Signaling Pathways in Glioblastoma;IL-3 Signaling Pathway;Focal Adhesion;Overview of nanoparticle effects;IL-4 Signaling Pathway;Angiopoietin Like Protein 8 Regulatory Pathway;Chemokine signaling pathway;ESC Pluripotency Pathways;Focal Adhesion-PI3K-Akt-mTOR-signaling pathway;Microglia Pathogen Phagocytosis Pathway;Endometrial cancer;PI3K-Akt Signaling Pathway;MET in type 1 papillary renal cell carcinoma;Ras Signaling;EMT transition in Colorectal Cancer;Insulin Signaling;Regulation of Actin Cytoskeleton;G13 Signaling Pathway;Interferon type I signaling pathways;DNA Damage Response (only ATM dependent);Toll-like Receptor Signaling Pathway;Signaling by GPCR;Antigen activates B Cell Receptor (BCR) leading to generation of second messengers;Disease;Signal Transduction;Signaling by Interleukins;Metabolism of lipids;Cytokine Signaling in Immune system;Alpha6Beta4Integrin;B cell receptor signaling;Signaling by the B Cell Receptor (BCR);Inositol phosphate metabolism;HGF;IGF signaling;Immune System;Metabolism;3-phosphoinositide biosynthesis;FGF;Interleukin receptor SHC signaling;Interleukin-2 family signaling;Adaptive Immune System;superpathway of inositol phosphate compounds;insulin Mam;IL-7 signaling;Phosphatidylinositol phosphate metabolism;EGFR1;PIP3 activates AKT signaling;PDGF;IL2;EPO signaling;IL3;Synthesis of PIPs at the plasma membrane;PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling;Negative regulation of the PI3K/AKT network;PI Metabolism;IL4;Phospholipid metabolism;Constitutive Signaling by Aberrant PI3K in Cancer;PI3K/AKT Signaling in Cancer;VEGF;G beta:gamma signalling through PI3Kgamma;G-protein beta:gamma signalling;GPCR downstream signalling;Intracellular signaling by second messengers;Diseases of signal transduction;CD4 T cell receptor signaling-NFkB cascade;insulin;CD4 T cell receptor signaling;Regulation of signaling by CBL;Interleukin-3, 5 and GM-CSF signaling (Consensus)

Recessive Scores

pRec
0.314

Intolerance Scores

loftool
0.183
rvis_EVS
-1.66
rvis_percentile_EVS
2.72

Haploinsufficiency Scores

pHI
0.614
hipred
Y
hipred_score
0.851
ghis
0.653

Essentials

essential_gene_CRISPR
N
essential_gene_CRISPR2
N
essential_gene_gene_trap
H
gene_indispensability_pred
E
gene_indispensability_score
0.995

Gene Damage Prediction

AllRecessiveDominant
MendelianMediumMediumMedium
Primary ImmunodeficiencyMediumMediumMedium
CancerMediumMediumMedium

Mouse Genome Informatics

Gene name
Pik3cd
Phenotype
hematopoietic system phenotype; immune system phenotype; skeleton phenotype; digestive/alimentary phenotype; endocrine/exocrine gland phenotype; cellular phenotype; homeostasis/metabolism phenotype;

Zebrafish Information Network

Gene name
pik3cd
Affected structure
retinal ganglion cell
Phenotype tag
abnormal
Phenotype quality
decreased branchiness

Gene ontology

Biological process
natural killer cell differentiation;cytokine production;adaptive immune response;mast cell chemotaxis;respiratory burst involved in defense response;protein phosphorylation;inflammatory response;signal transduction;axon guidance;positive regulation of gene expression;negative regulation of gene expression;T cell chemotaxis;phosphatidylinositol 3-kinase signaling;positive regulation of phosphatidylinositol 3-kinase signaling;phosphorylation;cell migration;cytokine-mediated signaling pathway;natural killer cell activation;platelet activation;T cell differentiation;positive regulation of cell migration;neutrophil chemotaxis;positive regulation of neutrophil apoptotic process;natural killer cell chemotaxis;B cell chemotaxis;phosphatidylinositol-3-phosphate biosynthetic process;T cell activation;B cell activation;mast cell degranulation;innate immune response;phosphatidylinositol phosphorylation;phosphatidylinositol-mediated signaling;T cell receptor signaling pathway;B cell receptor signaling pathway;positive regulation of protein kinase B signaling;mast cell differentiation;neutrophil extravasation
Cellular component
cytoplasm;cytosol;plasma membrane;phosphatidylinositol 3-kinase complex;membrane;mast cell granule
Molecular function
protein binding;ATP binding;kinase activity;1-phosphatidylinositol-3-kinase activity;phosphatidylinositol 3-kinase activity;1-phosphatidylinositol-4-phosphate 3-kinase activity;phosphatidylinositol-4,5-bisphosphate 3-kinase activity