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BIOMARKER:

PIK3CA mutation

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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
Entrez ID:
Related biomarkers:
Related tests:
1d
MicroRNA-124-3p suppresses lung cancer by targeting ITGB1/PI3K/p-AKT signal transduction pathway. (PubMed, Exp Cell Res)
Consistent with this, bioinformatics analysis demonstrated that miR-124-3p expression is significantly lower in tumor tissues than in adjacent normal lung and further decreases in advanced T stage (T3-T4) compared to early stage (T1-T2). These findings indicate that miR-124-3p inhibits NSCLC progression via the ITGB1/PI3K/p-AKT axis and remains functional despite PIK3CA activation, supporting its potential as a therapeutic candidate.
Journal
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PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha) • ITGB1 (Integrin Subunit Beta 1) • MIR124-3 (MicroRNA 124-3)
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PIK3CA mutation
1d
Metformin enhances alpelisib sensitivity in HER2+ breast cancer by suppressing cancer stemness and oncogenic signaling. (PubMed, Front Oncol)
These findings indicate that metformin synergistically enhances the antitumor activity of alpelisib in HER2-positive breast cancer by inhibiting oncogenic signaling and stemness pathways. Beyond its metabolic benefit in mitigating hyperglycemia, metformin may potentiate PI3K-targeted therapies, supporting further preclinical and clinical evaluation of this combination strategy.
Journal
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HER-2 (Human epidermal growth factor receptor 2) • PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha) • MYC (V-myc avian myelocytomatosis viral oncogene homolog) • CTNNB1 (Catenin (cadherin-associated protein), beta 1) • KLF4 (Kruppel-like factor 4) • SOX2 • ALDH1A1 (Aldehyde Dehydrogenase 1 Family Member A1) • NANOG (Nanog Homeobox)
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HER-2 positive • HR positive • HER-2 overexpression • HER-2 negative • PIK3CA mutation • HR positive + HER-2 negative • HER-2 overexpression + HR positive • HER-2 positive + HER-2 overexpression
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Piqray (alpelisib) • metformin
2d
Trial completion date
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PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha) • PGR (Progesterone receptor) • PTEN (Phosphatase and tensin homolog) • PIK3R1 (Phosphoinositide-3-Kinase Regulatory Subunit 1) • PI3K (Phosphoinositide 3-kinases)
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PIK3CA mutation • PTEN deletion
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fulvestrant • Aliqopa (copanlisib)
2d
Predictive Role of Circulating Tumor DNA in Stage III Colon Cancer Treated With Celecoxib: A Post Hoc Analysis of the CALGB (Alliance)/SWOG 80702 Phase 3 Randomized Clinical Trial. (PubMed, JAMA Oncol)
Observational studies have associated use of aspirin and selective cyclooxygenase inhibitors with decreased recurrence and improved survival in patients with colon cancer...This was a post hoc analysis of the phase 3 Cancer and Leukemia Group B (now Alliance)/Southwest Oncology Group 80702 randomized clinical trial (2010-2015) assessing adjuvant celecoxib vs placebo and 3 vs 6 months of adjuvant 5-fluorouracil, leucovorin, and oxaliplatin for stage III colon cancer...The findings of this post hoc analysis suggest that ctDNA status has the potential to inform clinical decision-making among patients with stage III colon cancer who should consider adjuvant celecoxib in addition to conventional chemotherapy. ClinicalTrials.gov Identifier: NCT01150045.
Clinical • P3 data • Retrospective data • Journal • Circulating tumor DNA
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PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha) • MSI (Microsatellite instability)
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PIK3CA mutation
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Signatera™
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5-fluorouracil • oxaliplatin • leucovorin calcium • aspirin • celecoxib oral
2d
Endometrial carcinomas with solid basaloid morphology and geographic necrosis: clinicopathological and molecular features of 18 cases. (PubMed, Virchows Arch)
Endometrial carcinomas with SB-GN represent a distinct and aggressive tumor group characterized by solid growth pattern, prominent necrosis, frequent basaloid morphology, high rates of CTNNB1 mutations, and aberrant β-catenin staining. Our results demonstrate that endometrial carcinomas with SB-GN and PiMHECs share similar clinicopathologic and molecular profiles, supporting a unified biological spectrum.
Journal
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TP53 (Tumor protein P53) • PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha) • PGR (Progesterone receptor) • PTEN (Phosphatase and tensin homolog) • ARID1A (AT-rich interaction domain 1A) • POLE (DNA Polymerase Epsilon) • CTNNB1 (Catenin (cadherin-associated protein), beta 1)
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TP53 mutation • PIK3CA mutation • PTEN mutation • ARID1A mutation • POLE mutation
3d
Paired-Sample and Pathway-Anchored MLOps Framework for Robust Transcriptomic Machine Learning in Small Cohorts: Model Classification Study. (PubMed, JMIR Bioinform Biotechnol)
These proof-of-concept results support the utility of integrating intrasubject dynamics, "biological knowledge"-based feature reduction (pathway-level feature reduction grounded in prior biological knowledge; eg, N-of-1-pathway analytics), and reproducible MLOp workflows can overcome cohort size limitations in infrequent disease, offering a scalable, interpretable solution for high-dimensional transcriptomic classification. Future work will extend these advances across various therapeutic and small cohort designs.
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
3d
MCLRP: enhanced prediction of anticancer drug response through low-rank matrix completion and transcriptomic profiling. (PubMed, BMC Biol)
These findings establish MCLRP as a dual-purpose predictive-analytical tool that not only enhances drug response forecasting but also uncovers mutation-specific pharmacological vulnerabilities through systems-level pattern recognition.
Journal
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BRAF (B-raf proto-oncogene) • PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha)
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BRAF mutation • PIK3CA mutation
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imatinib • doxorubicin hydrochloride • AZ 628
3d
Programmable Argonaute-mediated single-nucleotide variant sequencing of cell-free DNA for multi-cancer early detection. (PubMed, Nat Commun)
Lastly, we evaluate its feasibility for multi-cancer early detection in population-scale screening using pooled plasma samples. The EC-SNV-Seq assay can enable highly sensitive and specific identification of low-frequency mutations, facilitating early cancer diagnosis and personalized treatment strategies.
Journal
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EGFR (Epidermal growth factor receptor) • KRAS (KRAS proto-oncogene GTPase) • PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha)
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KRAS mutation • EGFR mutation • PIK3CA mutation
5d
Addition of ipatasertib to dual anti-HER2 maintenance therapy in HER2-positive metastatic breast tumors with PIK3CA mutations: the phase 1b SOLTI-1507 IPATHER trial. (PubMed, Clin Cancer Res)
These results support ipatasertib plus HP as a safe and promising maintenance strategy for HER2-positive breast tumors harboring PIK3CAmut.
P1 data • Journal
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HER-2 (Human epidermal growth factor receptor 2) • PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha)
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HER-2 positive • PIK3CA mutation
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Herceptin (trastuzumab) • Perjeta (pertuzumab) • ipatasertib (RG7440)
5d
A Case of Uterine Serous Carcinoma in a Patient with a Germline BRCA1 Mutation: Genomic Profiling Reveals an Ovarian Cancer-Like Molecular Signature. (PubMed, Case Rep Oncol)
This finding suggests that BRCA1-associated USC may be sensitive to poly ADP-ribose polymerase inhibitors, and also raises the question of whether risk-reducing hysterectomy should be considered for patients with BRCA1 mutation. USC with a BRCA1 mutation may have molecular characteristics distinct from those of sporadic USC, and further accumulation and analysis of such cases are needed to evaluate the clinical implications.
Journal • BRCA Biomarker • PARP Biomarker
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TP53 (Tumor protein P53) • PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha) • BRCA1 (Breast cancer 1, early onset) • RB1 (RB Transcriptional Corepressor 1) • MAP3K1 (Mitogen-Activated Protein Kinase Kinase Kinase 1)
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TP53 mutation • PIK3CA mutation
8d
Morpheus-TNBC: A Study Evaluating the Efficacy and Safety of Multiple Treatment Combinations in Patients With Metastatic or Locally Advanced Breast Cancer (clinicaltrials.gov)
P1/2, N=792, Recruiting, Hoffmann-La Roche | N=580 --> 792 | Trial completion date: May 2028 --> Sep 2030 | Trial primary completion date: May 2028 --> Sep 2030
Enrollment change • Trial completion date • Trial primary completion date
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HER-2 (Human epidermal growth factor receptor 2) • PD-L1 (Programmed death ligand 1) • PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha)
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PD-L1 expression • PIK3CA mutation
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VENTANA PD-L1 (SP142) Assay
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Avastin (bevacizumab) • Tecentriq (atezolizumab) • Ibrance (palbociclib) • carboplatin • gemcitabine • Enhertu (fam-trastuzumab deruxtecan-nxki) • capecitabine • Verzenio (abemaciclib) • albumin-bound paclitaxel • Kisqali (ribociclib) • fulvestrant • Halaven (eribulin mesylate) • letrozole • ipatasertib (RG7440) • Trodelvy (sacituzumab govitecan-hziy) • Itovebi (inavolisib) • Actemra IV (tocilizumab) • atirmociclib (PF-07220060) • ladiratuzumab vedotin (SGN-LIV1A) • selicrelumab (RG7876)
9d
Tumor necrosis associates with aggressive breast cancer features, increased hypoxia signaling and reduced patient survival. (PubMed, Sci Rep)
Mutational profiling pointed to enrichment of TP53 and PIK3CA mutations in tumors with and without necrosis, respectively. This study confirms the association of breast cancer necrosis with aggressive tumor features and reduced survival, and points to the BCNS score as a potential biomarker that should be further explored and validated to improve breast cancer diagnosis and management.
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