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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
Genomic Determinants and an Exploratory Prognostic Model for Immunotherapy Outcomes in Recurrent or Metastatic Cervical Cancer. (PubMed, Oncologist)
Specific genomic alterations may help stratify immunotherapy outcomes in recurrent or metastatic cervical cancer. The proposed genomic risk model remains exploratory and requires validation in larger, independent cervical cancer cohorts.
Journal • Tumor mutational burden • PD(L)-1 Biomarker • IO biomarker
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PD-L1 (Programmed death ligand 1) • TP53 (Tumor protein P53) • PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha) • TMB (Tumor Mutational Burden) • HRD (Homologous Recombination Deficiency) • KEAP1 (Kelch Like ECH Associated Protein 1) • TERT (Telomerase Reverse Transcriptase) • BAP1 (BRCA1 Associated Protein 1) • FBXW7 (F-Box And WD Repeat Domain Containing 7) • TNFA (Tumor Necrosis Factor-Alpha) • CREBBP (CREB binding protein) • EP300 (E1A binding protein p300)
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TP53 mutation • PIK3CA mutation • KEAP1 mutation
1d
Alpelisib enhances cisplatin mediated cytotoxicity in non-mutated, PIK3CA-dependent high-grade serous ovarian cancer. (PubMed, J Ovarian Res)
Our findings highlight the potential of cisplatin-alpelisib treatment in a subset of HGSOC patients with PIK3CA overexpression, mediated either through gene amplification or transcriptional modulation, reflecting the wider application of alpelisib in PIK3CA-non-mutated ovarian cancer.
Journal • BRCA Biomarker
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PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha) • BRCA2 (Breast cancer 2, early onset)
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TP53 mutation • BRCA2 mutation • PIK3CA mutation
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cisplatin • Piqray (alpelisib)
1d
Network pharmacology and transcriptomic analysis reveal wogonin as a key bioactive compound of Scutellaria baicalensis Georgi in suppressing glioma progression via PI3K-Akt pathway suppression. (PubMed, Brain Res)
This study demonstrates that wogonin acts as a key bioactive constituent of SBG and suppresses GBM progression through AKT1-centered PI3K-Akt pathway inhibition, with rescue experiments supporting a causal contribution of AKT suppression to the observed phenotypes. By integrating multi-omics analysis with functional and rescue-based validation, this work provides mechanistic evidence supporting wogonin as a promising compound for further preclinical evaluation in GBM.
Journal
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PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha)
2d
Development of a LiDia-SEQ™ platform compatible breast cancer panel and testing with metastatic breast cancer patient samples: A rapid, sample-to-result, fully integrated next-generation sequencing (NGS)-based platform, LiDia-SEQ, for use at the point-of-need. (PubMed, J Liq Biopsy)
Using clinical samples, we show that the DNAe panel with analysis using DNAe's pipeline detects mutations comparably to the commercial Oncomine-Assay. This paves the way for development of the DNAe panel into a test for the LiDia-SEQ platform.
Journal • Next-generation sequencing
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ER (Estrogen receptor) • TP53 (Tumor protein P53) • PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha)
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TP53 mutation • PIK3CA mutation
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Oncomine™ Breast cfDNA Assay
2d
Earlier Comprehensive Cancer Genomic Profiling in Gynecologic Cancers May Facilitate Genotype-Matched Therapy: A Prospective Single-Institution Study. (PubMed, Obstet Gynecol Int)
In survival analysis using the Cox proportional hazards model, the presence of PIK3CA mutations was identified as being potentially associated with adverse prognosis (hazard ratio: 2.73, 95% confidence interval: 1.15-6.49, and p = 0.023). To enhance the prognosis of gynecologic cases, earlier CGP testing to expand the opportunities for GMT and the proactive introduction of PIK3CA-related clinical trials might be crucial.
Journal
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PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha)
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PIK3CA mutation
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FoundationOne® CDx • FoundationOne® Liquid CDx
5d
The pterocarpan (+)-PTC modulates cytoskeletal proteins and induces apoptosis in metastatic castration-resistant prostate cancer: a proteomic perspective. (PubMed, Front Pharmacol)
Treatment of metastatic, castration-resistant prostate cancer (mCRPC) remains clinically challenging due to tumor heterogeneity and resistance to standard microtubule-targeting agents, such as docetaxel and cabazitaxel. The top upregulated proteins, TTLL3, ANAPC7, PIK3CA, ARID4B, and COL16A1, are linked to microtubule dynamics and cell cycle regulation; the main downregulated, namely KDM2B, PTOV1, YWHAQ, PSMB6, and PRKCB, are involved in cell survival, protein homeostasis and mitotic checkpoint control. These findings provide proteomic evidence that (+)-PTC interferes with cytoskeletal protein dynamics and promotes apoptosis in mCRPC and so warranting its further investigation as a candidate anti-cancer scaffold.
Journal
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PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha) • BAX (BCL2-associated X protein) • CASP3 (Caspase 3) • CASP7 (Caspase 7) • PRKCB (Protein Kinase C Beta) • ANXA5 (Annexin A5)
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docetaxel • cabazitaxel
5d
Cancer of unknown primary genomic profiling from cell-free DNA provides insights into CUP biology and vulnerabilities. (PubMed, Front Med (Lausanne))
In addition, pathogenic germline variants in MITF, NTRK1, and BAP1 were identified in three patients; notably, the NTRK1 germline variant was accompanied by an independent somatic mutation in the same gene. Overall, these findings support liquid biopsy as a valuable approach for molecular profiling of CUP and highlight the critical importance of paired ccfDNA/gDNA analysis, including CHIP assessment, to accurately distinguish somatic, germline, and hematopoiesis-related variants.
Journal
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KRAS (KRAS proto-oncogene GTPase) • TP53 (Tumor protein P53) • PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha) • NTRK1 (Neurotrophic tyrosine kinase, receptor, type 1) • ARID1A (AT-rich interaction domain 1A) • NF1 (Neurofibromin 1) • BAP1 (BRCA1 Associated Protein 1) • MITF (Melanocyte Inducing Transcription Factor)
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TP53 mutation • KRAS mutation • PIK3CA mutation • ARID1A mutation
5d
Anlotinib as Third-Line or Later Therapy in Recurrent or Metastatic Head and Neck Squamous Cell Carcinoma: Real-World Efficacy and Safety Outcomes. (PubMed, Drug Des Devel Ther)
Anlotinib demonstrated promising responses with manageable toxicity in a heavily pretreated R/M HNSCC population. Integration of genomic and immune microenvironment features may provide hypothesis-generating insights into patient selection.
Retrospective data • Journal • Real-world evidence • PD(L)-1 Biomarker • IO biomarker
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PD-L1 (Programmed death ligand 1) • TP53 (Tumor protein P53) • PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha) • CDKN2A (Cyclin Dependent Kinase Inhibitor 2A) • CD8 (cluster of differentiation 8)
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Focus V (anlotinib)
5d
Blood-based Biomarkers in Cervical Cancer: The Emerging Role of Circulating Human Papillomavirus and Tumor Deoxyribonucleic Acid. (PubMed, Ann Afr Med)
ctDNA represents a transformative tool in CC care, enabling real-time, tumor-specific insights with broad diagnostic and prognostic implications. Future efforts should focus on prospective validation, integration with imaging and artificial intelligence, and development of cost-effective ctHPV DNA screening panels, particularly for underserved populations.
Journal
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TP53 (Tumor protein P53) • PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha)
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TP53 mutation • PIK3CA mutation
5d
A systematic scoping review of the molecular pathogenesis of digestive system cancers (2013-2025). (PubMed, Discov Oncol)
Epigenetic dysregulation and recent applications of single-cell and spatial transcriptomics highlighted tumour heterogeneity. Despite progress, evidence remains uneven across cancer types, with limited exploration of germline variants beyond colorectal, pancreatic, and select liver cancers.
Journal
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KRAS (KRAS proto-oncogene GTPase) • TP53 (Tumor protein P53) • PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha) • MSI (Microsatellite instability) • CDKN2A (Cyclin Dependent Kinase Inhibitor 2A)
5d
Endonuclease-Assisted Selective Exponential Amplification (ESEA) for Ultra-Sensitive Enrichment and Detection of Low-abundance Mutant Alleles in Lung Cancer. (PubMed, J Mol Diagn)
In a small-sample-size test, the ESEA system achieved 100% sensitivity and specificity in pleural effusion samples (n=5) and a 100% ctDNA detection rate in patients with extracranial lesions and disease progression (n=6). These results highlight its potential as a cost-effective, highly sensitive, and robust platform for dynamic, real-time companion diagnostics, as well as non-invasive monitoring of treatment response and tumor evolution.
Journal
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EGFR (Epidermal growth factor receptor) • 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 • EGFR mutation • BRAF V600 • EGFR L858R • EGFR exon 19 deletion • EGFR T790M • EGFR exon 19 deletion + EGFR T790M
6d
Aging, Dauer, and Stature Phenotypes Are Conferred by Structure-Directed Missense Mutations in the Endogenous AGE-1/Phosphatidylinositol 3-Kinase Catalytic Subunit. (PubMed, Aging Cell)
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)