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GENE:

PIK3CD (Phosphatidylinositol-4 5-Bisphosphate 3-Kinase Catalytic Subunit Delta)

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Other names: PIK3CD, Phosphatidylinositol-4 5-Bisphosphate 3-Kinase Catalytic Subunit Delta, Phosphatidylinositol 4 5-Bisphosphate 3-Kinase Catalytic Subunit Delta Isoform, PtdIns-3-Kinase Subunit P110-Delta, Phosphoinositide-3-Kinase C, PI3Kdelta, Phosphatidylinositol-4 5-Bisphosphate 3-Kinase Catalytic Subunit Delta Short Variant 8/20, Phosphatidylinositol-4 5-Bisphosphate 3-Kinase Catalytic Subunit Delta Short Variant 20, Phosphatidylinositol-4,5-Bisphosphate 3-Kinase Catalytic Subunit Delta Short Variant 8, Phosphatidylinositol-4 5-Bisphosphate 3-Kinase 110 KDa Catalytic Subunit Delta, Phosphatidylinositol-4 5-Bisphosphate 3-Kinase Catalytic Subunit Delta Isoform, Phosphatidylinositol 4 5-Bisphosphate 3-Kinase 110 KDa Catalytic Subunit Delta, Phosphoinositide-3-Kinase Catalytic Delta Polypeptide Variant P37delta, Phosphatidylinositol-4 5-Bisphosphate 3-Kinase Catalytic Subunit Delta, Phosphatidylinositol 3-Kinase Catalytic Delta Polypeptide, Phosphoinositide-3-Kinase Catalytic Delta Polypeptide
7d
Identification of potentially deleterious mutations in gastric cancer using patient-derived xenograft models. (PubMed, Front Genet)
The integrated analysis of longitudinal WES data from primary tumors and matched PDXs enabled the identification of a core set of conserved, potentially deleterious mutations. The four prioritized mutations (PTPRK, PIK3CB, LRP1B, and IGF2R) provide new insights into the genetic landscape of gastric cancer and represent promising candidates for the development of targeted therapeutic strategies.
Preclinical • Journal
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TP53 (Tumor protein P53) • ASXL1 (ASXL Transcriptional Regulator 1) • LRP1B (LDL Receptor Related Protein 1B) • PIK3CD (Phosphatidylinositol-4 5-Bisphosphate 3-Kinase Catalytic Subunit Delta) • PIK3CB (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit beta) • IRS2 (Insulin receptor substrate 2) • ERCC5 (ERCC Excision Repair 5 Endonuclease 2) • PDE4DIP (Phosphodiesterase 4D Interacting Protein) • PTPRK (Protein Tyrosine Phosphatase Receptor Type K)
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TP53 mutation • ASXL1 mutation
12d
Video capsule endoscopy in very early onset inflammatory bowel disease: a multicenter retrospective study from the Chinese Pediatric VCE Study Group. (PubMed, Transl Gastroenterol Hepatol)
This multicenter study showed the features of small bowel lesions among VEOIBD by VCE. Safety of VCE in VEOIBD patients have also been demonstrated.
Clinical • Retrospective data • Journal • Video
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PIK3CD (Phosphatidylinositol-4 5-Bisphosphate 3-Kinase Catalytic Subunit Delta) • TNFAIP3 (TNF Alpha Induced Protein 3) • XIAP (X-Linked Inhibitor Of Apoptosis)
12d
Inhibition of autoantigen-induced B-cell receptor (BCR) internalization as a therapeutic strategy in diffuse large B cell lymphoma (DLBCL). (PubMed, Cell Death Dis)
Finally, CME inhibition with dynamin-2 antagonists, such as phenothiazine derivatives, reduces BCR signaling, cell viability, and synergizes with SYK and PI3Kδ inhibitors. Since phenothiazines have well-defined safety and pharmacokinetic profiles, our data provide a framework for the rational design of clinical trials employing these drugs in the autoantigen-dependent subset of DLBCL.
Journal
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MYD88 (MYD88 Innate Immune Signal Transduction Adaptor) • PIK3CD (Phosphatidylinositol-4 5-Bisphosphate 3-Kinase Catalytic Subunit Delta) • SYK (Spleen tyrosine kinase)
21d
Optimizing anti-PI3Kδ and anti-LAG-3 immunotherapy dosing regimens in a mouse model of triple-negative breast cancer improves outcome by removing treatment-related adverse events. (PubMed, J Immunother Cancer)
Our data demonstrated that refining immunotherapy delivery approaches can improve tolerability that ultimately transforms treatment success.
Preclinical • Journal • Adverse events
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PIK3CD (Phosphatidylinositol-4 5-Bisphosphate 3-Kinase Catalytic Subunit Delta) • FGL1 (Fibrinogen Like 1)
1m
Clonal Progression of a DNA Polymerase Epsilon-Mutant Endometrial Cancer With Immune Evasion Characteristics and Metastasis. (PubMed, Lab Invest)
In contrast, metastatic lesions exhibited POLE loss and activation of the BRAF V600E/PIK3CD pathway, leading to progress and immune evasion. These findings highlight a distinct evolutionary trajectory of POLE-mutated EC under immunosuppressive conditions in this case and underscore the need for tailored oncological surveillance and treatment strategies in transplant recipients.
Journal
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BRAF (B-raf proto-oncogene) • POLE (DNA Polymerase Epsilon) • CD8 (cluster of differentiation 8) • IFNG (Interferon, gamma) • PIK3CD (Phosphatidylinositol-4 5-Bisphosphate 3-Kinase Catalytic Subunit Delta)
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BRAF V600E • BRAF V600 • POLE mutation
1m
The PI3Kδ inhibitor roginolisib (IOA-244) preserves T-cell function and activity. (PubMed, Mol Oncol)
Furthermore, idelalisib treatment promoted differentiation of conventional CD4+ T cells into Th1, Th2, and Th17 subsets-a response not observed with roginolisib. In summary, roginolisib functions as an effective PI3K inhibitor on leukemic cells while preserving T-cell functions, posing it as an alternative to current PI3K inhibitors.
Journal
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CD8 (cluster of differentiation 8) • PIK3CD (Phosphatidylinositol-4 5-Bisphosphate 3-Kinase Catalytic Subunit Delta) • CD4 (CD4 Molecule)
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Zydelig (idelalisib) • roginolisib (IOA-244)
1m
Clinical efficacy and safety of umbralisib, a dual PI3Kδ/CK1-ϵ inhibitor, in treatment of hematologic malignancies. (PubMed, Front Oncol)
Further studies are needed to optimize combination strategies, explore alternative administration routes, and refine dosing approaches. https://www.crd.york.ac.uk/PROSPERO/, identifier CRD420251018098.
Review • Journal
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PIK3CD (Phosphatidylinositol-4 5-Bisphosphate 3-Kinase Catalytic Subunit Delta)
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Ukoniq (umbralisib)
2ms
CAR-adapted PIK3CD base editing enhances T cell anti-tumor potency. (PubMed, Nat Cancer)
Conversely, the PI3Kδ-attenuating substitution L32P improved T cell memory formation and functionality of 28z CAR T cells. Together, our approach of rational optimization of activation-dependent signaling through targeted allelic reprogramming (ROADSTAR) illustrates the importance of CAR design-specific fine-tuning of intrinsic T cell signaling and demonstrates the potential of base editing for next-generation cellular therapies.
Journal
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PIK3CD (Phosphatidylinositol-4 5-Bisphosphate 3-Kinase Catalytic Subunit Delta)
2ms
In Silico Assessment of Silybum marianum Bioactive Compounds in Prostate Cancer Using Network Pharmacology and Molecular Docking. (PubMed, J Pharmacopuncture)
This integrated approach highlighted critical molecular targets and pathways modulated by SM, providing a basis for future experimental studies. SM shows potential as a complementary agent in prostate cancer therapy.
Journal
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PTPN11 (Protein Tyrosine Phosphatase Non-Receptor Type 11) • PIK3CD (Phosphatidylinositol-4 5-Bisphosphate 3-Kinase Catalytic Subunit Delta) • PTGS2 (Prostaglandin-Endoperoxide Synthase 2) • CCNA2 (Cyclin A2) • CDK1 (Cyclin-dependent kinase 1) • CYP2C9 (Cytochrome P450 Family 2 Subfamily C Member 9) • PACERR (PTGS2 Antisense NFKB1 Complex-Mediated Expression Regulator RNA)
2ms
Transcriptomics analysis unveils the complex interplay between diabetes and hypertension in regulating renal cell carcinoma pathway followed by pancreatic metastasis. (PubMed, J Genet Eng Biotechnol)
Mutational analysis further highlighted the significance of KRAS G12C, G12V, and G12D mutations, which were common between RCC and pancreatic metastasis. Our study provides critical insights into the statistically significant associations between metabolic disorders and malignancies, emphasizing the potential of tailored therapies alongside shared therapies in managing RCC and its progression to pancreatic metastasis.
Journal
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KRAS (KRAS proto-oncogene GTPase) • CD8 (cluster of differentiation 8) • PTPN11 (Protein Tyrosine Phosphatase Non-Receptor Type 11) • PIK3CD (Phosphatidylinositol-4 5-Bisphosphate 3-Kinase Catalytic Subunit Delta) • CDC42 (Cell Division Cycle 42) • MIR16 (MicroRNA 16) • MIR455 (MicroRNA 455)
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KRAS mutation • KRAS G12C • KRAS G12D • KRAS G12
3ms
Dual PI3Kδ/γ inhibition enhances radiotherapy-induced antitumor immunity via macrophage-dependent cGAS-STING-type I interferon signaling. (PubMed, Biochem Biophys Res Commun)
In the syngeneic CT26 model, dual PI3Kδ/γ inhibition (BR101801 or duvelisib), unlike selective PI3Kδ inhibition (idelalisib), synergized with RT (7.5 Gy) to suppress tumor growth and induce durable immune memory. Furthermore, blockade of the IFN-I receptor abolished CD8+ T cell infiltration and M2-like macrophage suppression, abrogating antitumor efficacy and confirming the requirement for IFN-I signaling. These findings identify macrophage-driven activation of the cGAS-STING-IFN-I axis as a key mechanism by which dual PI3Kδ/γ inhibition potentiates RT, providing a strong scientific rationale for its development as an immunomodulatory radiosensitizer.
Journal
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CD8 (cluster of differentiation 8) • CXCL10 (Chemokine (C-X-C motif) ligand 10) • PIK3CG (Phosphatidylinositol-4,5-Bisphosphate 3-Kinase Catalytic Subunit Gamma) • PIK3CD (Phosphatidylinositol-4 5-Bisphosphate 3-Kinase Catalytic Subunit Delta) • STING (stimulator of interferon response cGAMP interactor 1) • CGAS (Cyclic GMP-AMP Synthase)
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Zydelig (idelalisib) • Copiktra (duvelisib) • bosmolisib (BR101801)
3ms
Novel benzoxazole-based hybrids as multi-target inhibitors of aromatase, EGFR, and PI3K with potential anti-breast cancer activity. (PubMed, Bioorg Med Chem)
MTT assay showed that 6 and 9b were 4.5 and 2 times more potent than doxorubicin against MCF-7 cells, while 9a and 13b were 10 and 7.5 times more effective against MDA-MB-231 cells, respectively...Compound 13b exhibited comparable EGFRL858R inhibition to lapatinib and outperformed pictilisib against PI3Kα, PI3Kβ, and PI3Kδ. Compound 6 showed greater ARO inhibition than letrozole, while being slightly less potent than pictilisib against PI3Kα and PI3Kβ...Docking studies supported the in vitro enzymatic inhibition assays results. Thus, 9b and 13d are potent anti-breast cancer benzoxazoles with selective ARO and PI3kα inhibition activity, respectively, while 6, 9a, and 13b are multi-target inhibitors exhibiting other anticancer synergistic mechanisms.
Journal
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EGFR (Epidermal growth factor receptor) • PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha) • PIK3CD (Phosphatidylinositol-4 5-Bisphosphate 3-Kinase Catalytic Subunit Delta) • PIK3CB (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit beta) • CASP9 (Caspase 9) • ANXA5 (Annexin A5) • BECN1 (Beclin 1)
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EGFR L858R • EGFR wild-type
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lapatinib • doxorubicin hydrochloride • letrozole • pictilisib (GDC-0941)