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GENE:

PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha)

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Other names: PIK3CA, Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha, Phosphoinositide-3-kinase, catalytic, alpha polypeptide, Serine/threonine protein kinase PIK3CA, PtdIns-3-kinase subunit P110-alpha, PI3K-alpha, Phosphatidylinositol-4,5-bisphosphate 3-kinase 110 KDa catalytic subunit alpha, Phosphatidylinositol 3-kinase, Catalytic, 110-KD, alpha, PI3-kinase P110 subunit alpha, PI3-kinase subunit alpha, PtdIns-3-kinase subunit alpha, PI3Kalpha, P110alpha, PI3K
1d
New P3 trial
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PD-L1 (Programmed death ligand 1) • PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha)
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PIK3CA mutation
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Loqtorzi (toripalimab-tpzi)
1d
PI3Kγ Deficiency Suppresses Cutaneous Squamous Cell Carcinoma Formation by Modulating the Tumour Microenvironment Rather Than by Directly Regulating Keratinocyte Proliferation. (PubMed, Exp Dermatol)
These results indicate that PI3Kγ contributes to cSCC development not by directly driving tumour cell proliferation but by shaping an immunosuppressive tumour microenvironment. Targeting PI3Kγ may therefore represent a promising immunotherapeutic strategy to enhance cytotoxic T-cell-mediated antitumour immunity in cSCC.
Journal • IO biomarker
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PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha) • CD8 (cluster of differentiation 8) • PIK3CG (Phosphatidylinositol-4,5-Bisphosphate 3-Kinase Catalytic Subunit Gamma) • CD4 (CD4 Molecule) • FOXP3 (Forkhead Box P3)
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PIK3CA mutation
1d
Interpretable deep learning model of circulating genomics for quantitative survival prediction in advanced non-small cell lung cancer. (PubMed, Clin Transl Oncol)
The interpretable DeepSurv model, integrating multimodal features, enables quantitative survival prediction and risk stratification in advanced NSCLC, facilitating personalized decision-making.
Journal
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EGFR (Epidermal growth factor receptor) • TP53 (Tumor protein P53) • PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha) • MET (MET proto-oncogene, receptor tyrosine kinase) • STK11 (Serine/threonine kinase 11) • ARID1A (AT-rich interaction domain 1A)
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TP53 mutation • EGFR mutation • PIK3CA mutation • ARID1A mutation • STK11 mutation • MET mutation
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MSK-ACCESS
1d
Predictive and Prognostic Value of p16 in Head and Neck Squamous Cell Carcinoma Patients Treated with Molecular Targeted Agents or Immune Checkpoint Inhibitors: Subgroup Analysis of the TRIUMPH Study. (PubMed, Cancer Invest)
Patients with p16 (+) showed longer PFS and OS compared to p16 (-) patients. This suggests that p16 has prognostic and predictive values in HNSCC patients who are treated with MTAs or ICIs.
Journal • Checkpoint inhibition • IO biomarker
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EGFR (Epidermal growth factor receptor) • HER-2 (Human epidermal growth factor receptor 2) • PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha) • FGFR (Fibroblast Growth Factor Receptor)
1d
GARD: Genomic Data based Drug Repurposing in Head and Neck Cancer with Large Language Model Validation. (PubMed, bioRxiv)
Drug-gene mapping revealed candidates spanning already in clinical trials for HNC (e.g. Afatinib, Cabozantinib, Dasatinib, Brigatinib, Lenvatinib, Capivasertib, Erdafitinib) and emerging or repurposing candidates (Amuvatinib, XL765 (Voxtalisib), Golotimod, Artenimol, Quercetin, and Acetylsalicylic Acid), offering opportunities for precision repurposing...These included targeted therapies such as Fostamatinib, Nintedanib, Brigatinib, Regorafenib, and Lenvatinib, as well as emerging compounds like Artenimol, Quercetin, and Acetylsalicylic Acid (Aspirin). Through a combination of genomic analysis, network expansion, and literature validation, the GARD pipeline offers a powerful way to accelerate personalized cancer treatments while reducing cost and development time.
Journal • IO biomarker
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EGFR (Epidermal growth factor receptor) • HER-2 (Human epidermal growth factor receptor 2) • TP53 (Tumor protein P53) • PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha) • SOX2 • CLDN1 (Claudin 1) • TLR7 (Toll Like Receptor 7) • EIF4G1 (Eukaryotic translation initiation factor 4 gamma, 1)
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Gilotrif (afatinib) • dasatinib • Lenvima (lenvatinib) • Cabometyx (cabozantinib tablet) • Balversa (erdafitinib) • Stivarga (regorafenib) • Alunbrig (brigatinib) • Truqap (capivasertib) • nintedanib • Tavalisse (fostamatinib) • amuvatinib (MP470) • aspirin • voxtalisib (SAR245409)
1d
Aging, dauer, and stature phenotypes are conferred by structure-directed missense mutations in the endogenous AGE-1/phosphatidylinositol 3-kinase catalytic subunit. (PubMed, bioRxiv)
Together, these structure-informed alleles show that discrete PI3K structural perturbations can differentially uncouple lifespan, growth, and developmental outcomes in vivo . By combining structural modeling with genome editing in a tractable aging model, this work establishes a framework for dissecting conserved signaling enzymes at single-residue resolution and uncovers unexpected organismal roles for PI3K structure in coordinating growth and longevity.
Journal
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PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha) • PIK3CG (Phosphatidylinositol-4,5-Bisphosphate 3-Kinase Catalytic Subunit Gamma)
1d
Dietary and lifestyle inflammation scores in relation to colon cancer recurrence in subgroups of patients based on common molecular tumour characteristics. (PubMed, ESMO Gastrointest Oncol)
Persons who have a more pro-inflammatory lifestyle may have an increased recurrence risk (IRR 1.21, 95% CI 0.97-1.52), which was most pronounced for persons with MSS and KRAS or PIK3CA wildtype tumours (IRR 1.31, 95% CI 0.90-1.90 and IRR 1.30, 95% CI 0.98-1.71, respectively). Our results suggest that associations between the LIS and recurrence might differ based on molecular tumour characteristics.
Journal
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KRAS (KRAS proto-oncogene GTPase) • BRAF (B-raf proto-oncogene) • TP53 (Tumor protein P53) • PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha) • MSI (Microsatellite instability) • APC (APC Regulator Of WNT Signaling Pathway)
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TP53 mutation • KRAS mutation • BRAF mutation • PIK3CA mutation • KRAS wild-type
1d
A Three-subtype Molecular model of Cervical Cancer: Multiple PI3K Pathway inhibitors suppress growth and cooperate with HPV-directed immunotherapy. (PubMed, medRxiv)
The pan-AKT inhibitor, Capivasertib (AZD5363), suppressed some but not all tested PIK3CA -mutated cell lines and one PIK3CA -wt cell line (SiHa). Further research on targeted therapies will improve the prognosis of patients with cervical cancer. Identified 3 molecular subtypes of CC based on PIK3CA and YAP1 amplification status Cervical cell lines with PIK3CA mutation are suppressed by targeted inhibitors PI3K inhibitors Alpelisib/Inavolisib selectively block PIK3CA-mutant cells PIK3CA mutation is associated with higher expression of the checkpoint CD274/PD-L1 PI3K inhibitors cooperate with donor-derived T cells to kill cervical cells.
Journal • PD(L)-1 Biomarker • IO biomarker
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EGFR (Epidermal growth factor receptor) • PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha) • YAP1 (Yes associated protein 1)
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EGFR mutation • PIK3CA mutation • HLA-A*02 positive
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Piqray (alpelisib) • Truqap (capivasertib) • Itovebi (inavolisib)
1d
Tumor microenvironment changes after treatment with avelumab and immune- stimulating agent combinations in patients with advanced solid tumors. (PubMed, Res Sq)
Methods We performed whole exome sequencing (WES), bulk RNAseq, multiplex immunofluorescence (mIF) and chromogenic immunohistochemistry (IHC) on tumor tissue and flow cytometry of the peripheral blood to study longitudinal changes following the combination of avelumab with utomilumab (a 4-1BB agonist) (arm A), PF-04518600 (an OX40 agonist) (arm B), utomilumab and PF-04518600 (arm C) and utomilumab and radiotherapy (arm D) in phase I/II study (NCT03217747). Conclusions Our findings, though limited, highlight genomic differences between histologic subsets and outcome as well as the need for combination strategies that drive the recruitment and/or priming of anti-tumor T cells and address low immune permissive tumor states in patients with advanced solid tumors. Clinical trial registration: This clinical trial was registered on clinicaltrials.gov NCT03217747.
Journal • Tumor mutational burden • PD(L)-1 Biomarker • IO biomarker
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KRAS (KRAS proto-oncogene GTPase) • PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha) • TMB (Tumor Mutational Burden) • CCNE1 (Cyclin E1) • IFNG (Interferon, gamma) • TTN (Titin)
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TP53 mutation • KRAS mutation • KRAS G12C • KRAS G12D • TMB-L • KRAS G12
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Bavencio (avelumab) • utomilumab (PF-05082566) • ivuxolimab (PF-04518600)
2d
New P3 trial
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HER-2 (Human epidermal growth factor receptor 2) • KRAS (KRAS proto-oncogene GTPase) • BRAF (B-raf proto-oncogene) • PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha)
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BRAF V600E • BRAF V600 • BRAF wild-type
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Avastin (bevacizumab) • Erbitux (cetuximab) • 5-fluorouracil • oxaliplatin • irinotecan • leucovorin calcium
2d
SNV4818 in Participants With Advanced Solid Tumors (clinicaltrials.gov)
P1/2, N=320, Recruiting, Pikavation Therapeutics, Inc. | Phase classification: P1 --> P1/2 | N=140 --> 320 | Trial completion date: Dec 2026 --> Jun 2027 | Trial primary completion date: Oct 2026 --> Apr 2027
Phase classification • Enrollment change • Trial completion date • Trial primary completion date
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PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha)
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PIK3CA mutation
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Ibrance (palbociclib) • fulvestrant
2d
Endometrial Carcinoma of Gastrointestinal-type (EMCG): Incidence, Molecular Features, and Distinction From Other Endometrial Cancers With Gastrointestinal Marker Immunoexpression. (PubMed, Int J Gynecol Pathol)
These data provide an expanded understanding of the molecular underpinnings of EMCG-including the first description of a SMARCA4 frameshift variant in this entity-and demonstrate that while gastrointestinal marker immunoexpression is relatively common among endometrial carcinomas, strictly defined EMCG remains rare (<1%). As awareness of this entity grows, pathologists should take care not to over-interpret gastrointestinal marker expression as stand-alone evidence of an EMCG diagnosis.
Retrospective data • Journal
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KRAS (KRAS proto-oncogene GTPase) • ER (Estrogen receptor) • TP53 (Tumor protein P53) • PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha) • PTEN (Phosphatase and tensin homolog) • CLDN18 (Claudin 18) • SMARCA4 (SWI/SNF related, matrix associated, actin dependent regulator of chromatin, subfamily A, member 4) • CDX2 (Caudal Type Homeobox 2) • SALL4 (Spalt Like Transcription Factor 4)
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ER negative