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PIK3CA and breast cancer are reported together in 20 articles.

Gene

PIK3CA

HGNC
HGNC:8975
77articles
77mentions
4variants with confirmed gene link
Most co-reported phenotypes (articles)
Reported variants (articles · ClinVar status)
Phenotype

Breast cancer

1,211articles
1,211mentions
12co-reported genes shown
Most co-reported genes (articles)

Counts are literature co-mentions in SaudiVarKB, not clinical or causal assertions. Gene details: HGNC; variant status: ClinVar via dbSNP.

Publications

20 records shown · first 60
TypeEntitySource evidenceConfidenceExtractor
genePIK3CA“Elacestrant improved progression-free survival in ESR1-mutated disease in the EMERALD trial, capivasertib plus fulvestrant demonstrated significant benefit in tumors harboring AKT/PIK3CA/PTEN pathway alterations in CAPItello-291, and inavolisib plus palbociclib and fulvestrant achieved both progression-free and overall survival improvement in PIK3CA-mutated patients with early relapse in INAVO120.”0.98hgnc_dict_v1
phenotypebreast cancer“Post-CDK4/6 Inhibitor Therapeutic Approaches in Hormone Receptor-Positive, HER2-Negative Metastatic Breast Cancer: Current Evidence and Emerging Strategies-A Narrative Review.”0.98phenotype_alias_lexicon_v2
geneCDK4“Background: Therapeutic resistance following cyclin-dependent kinase 4/6 inhibitor (CDK4/6i) plus endocrine therapy (ET) represents a key unmet need in hormone receptor-positive, human epidermal growth factor receptor 2-negative (HR+/HER2-) metastatic breast cancer (mBC).”0.98hgnc_dict_v1
genePTEN“Elacestrant improved progression-free survival in ESR1-mutated disease in the EMERALD trial, capivasertib plus fulvestrant demonstrated significant benefit in tumors harboring AKT/PIK3CA/PTEN pathway alterations in CAPItello-291, and inavolisib plus palbociclib and fulvestrant achieved both progression-free and overall survival improvement in PIK3CA-mutated patients with early relapse in INAVO120.”0.98hgnc_dict_v1

Clinicopathological Landscape and Survival Outcomes of HER2-Low Breast Cancer in a Large Arab Cohort.

PMID 41792988 | DOI 10.1002/wjs.70267 · World journal of surgery · 2026 · 4 validated mentions
TypeEntitySource evidenceConfidenceExtractor
genePIK3CA“Clinicopathological characteristics, biomarker profiles (ER, PR, Ki-67), molecular alterations (PIK3CA, TP53, BRCA) and survival outcomes (overall survival (OS), cancer-specific survival (CSS), disease-free survival (DFS), and distant disease-free survival (DDFS)) were compared.”0.98hgnc_dict_v1
phenotypebreast cancer“Clinicopathological Landscape and Survival Outcomes of HER2-Low Breast Cancer in a Large Arab Cohort.”0.98phenotype_alias_lexicon_v2
geneTP53“Clinicopathological characteristics, biomarker profiles (ER, PR, Ki-67), molecular alterations (PIK3CA, TP53, BRCA) and survival outcomes (overall survival (OS), cancer-specific survival (CSS), disease-free survival (DFS), and distant disease-free survival (DDFS)) were compared.”0.98hgnc_dict_v1
populationSaudi Arabia“METHODS: We retrospectively analyzed 1097 Saudi breast cancer patients for HER2 status by immunohistochemistry (IHC), classifying tumors as HER2-zero (IHC 0) or HER2-low (IHC 1+/2+ and FISH-negative). CONCLUSION: In this large, ethnically homogenous Saudi cohort, HER2-low breast cancer represents a distinct molecular and clinicopathological subtype with luminal like features, yet no prognostic advantage.”0.95saudi_context_rules_v1
TypeEntitySource evidenceConfidenceExtractor
genePIK3CA“Multitargeted comparative evaluation suggests 2-Aoeobenoxmide shows favourable in silico binding compared to Tucatinib against ERα, HER2, AKT1, EGFR, and PIK3CA in breast cancer.”0.98hgnc_dict_v1
phenotypebreast cancer“Multitargeted comparative evaluation suggests 2-Aoeobenoxmide shows favourable in silico binding compared to Tucatinib against ERα, HER2, AKT1, EGFR, and PIK3CA in breast cancer.”0.98phenotype_alias_lexicon_v2
geneAKT1“Multitargeted comparative evaluation suggests 2-Aoeobenoxmide shows favourable in silico binding compared to Tucatinib against ERα, HER2, AKT1, EGFR, and PIK3CA in breast cancer.”0.98hgnc_dict_v1
geneEGFR“Multitargeted comparative evaluation suggests 2-Aoeobenoxmide shows favourable in silico binding compared to Tucatinib against ERα, HER2, AKT1, EGFR, and PIK3CA in breast cancer.”0.98hgnc_dict_v1
TypeEntitySource evidenceConfidenceExtractor
genePIK3CA“EGFR (10.2%), FGFR1 (4.9%), and PIK3CA (4.9%) showed the most amplifications, while fusions were observed in 2.7% of patients, including ALK, FGFR2, and RET.”0.98hgnc_dict_v1
phenotypebreast cancer“In patients with breast cancer, PIK3CA (35.3%), ESR1 (21.7%), and BRCA1/2 (13.3%) had the most prevalent alterations among NCCN-recommended genes.”0.98phenotype_alias_lexicon_v2
geneTP53“RESULTS: In the pan-cancer group, TP53 (58.5%), EGFR (20.4%), and KRAS (18.9%) were the most frequently mutated genes.”0.98hgnc_dict_v1
geneEGFR“RESULTS: In the pan-cancer group, TP53 (58.5%), EGFR (20.4%), and KRAS (18.9%) were the most frequently mutated genes.”0.98hgnc_dict_v1

Tailored therapies for triple-negative breast cancer: current landscape and future perceptions.

PMID 40029385 | DOI 10.1007/s00210-025-03896-4 · Naunyn-Schmiedeberg's archives of pharmacology · 2025 · 5 validated mentions
TypeEntitySource evidenceConfidenceExtractor
genePIK3CA“The molecular landscape of TNBC is covered in the first section, which keeps the focus on transcriptome and genomic profiling while highlighting key molecular targets like mutations in the BRCA1/2, PIK3CA, androgen receptors (AR), epidermal growth factor receptors (EGFR), and immunological checkpoint molecules.”0.98hgnc_dict_v1
phenotypebreast cancer“Tailored therapies for triple-negative breast cancer: current landscape and future perceptions.”0.98phenotype_alias_lexicon_v2
geneBRCA1“The molecular landscape of TNBC is covered in the first section, which keeps the focus on transcriptome and genomic profiling while highlighting key molecular targets like mutations in the BRCA1/2, PIK3CA, androgen receptors (AR), epidermal growth factor receptors (EGFR), and immunological checkpoint molecules.”0.98hgnc_dict_v1
geneAR“The molecular landscape of TNBC is covered in the first section, which keeps the focus on transcriptome and genomic profiling while highlighting key molecular targets like mutations in the BRCA1/2, PIK3CA, androgen receptors (AR), epidermal growth factor receptors (EGFR), and immunological checkpoint molecules.”0.98hgnc_dict_v1

Thymol and Carvacrol: Molecular Mechanisms, Therapeutic Potential, and Synergy With Conventional Therapies in Cancer Management.

PMID 40964147 | PMCID PMC12436185 | DOI 10.1002/fsn3.70936 · Food science & nutrition · 2025 · 5 validated mentions
TypeEntitySource evidenceConfidenceExtractor
genePIK3CA“Thymol derivatives, such as 1,2,3-triazoles and carvacrol, effectively target breast cancer (BC) through PI3K/AKT/mTOR and NOTCH pathways and inhibit PIK3CA expression.”0.98hgnc_dict_v1
phenotypebreast cancer“Thymol derivatives, such as 1,2,3-triazoles and carvacrol, effectively target breast cancer (BC) through PI3K/AKT/mTOR and NOTCH pathways and inhibit PIK3CA expression.”0.98phenotype_alias_lexicon_v2
geneXIAP“They upregulate pro-apoptotic genes (Bax, Bak, Bid, p53, and SIVA) while downregulating anti-apoptotic genes (Bcl-2, Bcl-xL, XIAP, and cIAP1), leading to apoptosis and cell cycle arrest at G0/G1 and G2/M phases.”0.98hgnc_dict_v1
phenotypelung cancer“In lung cancer (LC), they act as SphK1 inhibitors in NSCLC H1299 and A549 cell lines.”0.98phenotype_alias_lexicon_v2

Area deprivation index and breast cancer outcomes among patients in Western New York.

PMID 40544410 | PMCID PMC12259720 | DOI 10.1007/s10549-025-07733-3 · Breast cancer research and treatment · 2025 · 4 validated mentions
TypeEntitySource evidenceConfidenceExtractor
genePIK3CA“Finally, prevalence of somatic mutations in TP53, PIK3CA, and ESR1 were higher in ADI ≥ 60.”0.98hgnc_dict_v1
phenotypebreast cancer“Area deprivation index and breast cancer outcomes among patients in Western New York.”0.98phenotype_alias_lexicon_v2
geneTP53“Finally, prevalence of somatic mutations in TP53, PIK3CA, and ESR1 were higher in ADI ≥ 60.”0.98hgnc_dict_v1
geneESR1“Finally, prevalence of somatic mutations in TP53, PIK3CA, and ESR1 were higher in ADI ≥ 60.”0.98hgnc_dict_v1

Structure-Based In Silico Approaches Reveal IRESSA as a Multitargeted Breast Cancer Regulatory, Signalling, and Receptor Protein Inhibitor.

PMID 38399423 | PMCID PMC10891917 | DOI 10.3390/ph17020208 · Pharmaceuticals (Basel, Switzerland) · 2024 · 5 validated mentions
TypeEntitySource evidenceConfidenceExtractor
genePIK3CA“In our research, we conducted a comprehensive screening using HTVS, SP, and XP, followed by an MM/GBSA computation of human-approved drugs targeting HER2/neu, BRCA1, PIK3CA, and ESR1.”0.98hgnc_dict_v1
phenotypebreast cancer“Structure-Based In Silico Approaches Reveal IRESSA as a Multitargeted Breast Cancer Regulatory, Signalling, and Receptor Protein Inhibitor.”0.98phenotype_alias_lexicon_v2
geneBRCA1“In our research, we conducted a comprehensive screening using HTVS, SP, and XP, followed by an MM/GBSA computation of human-approved drugs targeting HER2/neu, BRCA1, PIK3CA, and ESR1.”0.98hgnc_dict_v1
geneESR1“In our research, we conducted a comprehensive screening using HTVS, SP, and XP, followed by an MM/GBSA computation of human-approved drugs targeting HER2/neu, BRCA1, PIK3CA, and ESR1.”0.98hgnc_dict_v1
TypeEntitySource evidenceConfidenceExtractor
genePIK3CA“Mutational Landscape and In-Silico Analysis of TP53, PIK3CA, and PTEN in Patients with Breast Cancer from Khyber Pakhtunkhwa.”0.98hgnc_dict_v1
phenotypebreast cancer“Mutational Landscape and In-Silico Analysis of TP53, PIK3CA, and PTEN in Patients with Breast Cancer from Khyber Pakhtunkhwa.”0.98phenotype_alias_lexicon_v2
geneTP53“Mutational Landscape and In-Silico Analysis of TP53, PIK3CA, and PTEN in Patients with Breast Cancer from Khyber Pakhtunkhwa.”0.98hgnc_dict_v1
genePTEN“Mutational Landscape and In-Silico Analysis of TP53, PIK3CA, and PTEN in Patients with Breast Cancer from Khyber Pakhtunkhwa.”0.98hgnc_dict_v1

Detection of genetic mutations in patients with breast cancer from Saudi Arabia using Ion AmpliSeq™ Cancer Hotspot Panel v.2.0.

PMID 35251613 | PMCID PMC8889543 | DOI 10.3892/br.2022.1509 · Biomedical reports · 2022 · 7 validated mentions
TypeEntitySource evidenceConfidenceExtractor
genePIK3CA“Mutations were predominantly focused on two genes, PIK3CA and TP53, in the BC genomes of the sample set.”0.98hgnc_dict_v1
phenotypebreast cancer“Detection of genetic mutations in patients with breast cancer from Saudi Arabia using Ion AmpliSeq™ Cancer Hotspot Panel v.2.0.”0.98phenotype_alias_lexicon_v2
geneTP53“Mutations were predominantly focused on two genes, PIK3CA and TP53, in the BC genomes of the sample set.”0.98hgnc_dict_v1
populationSaudi Arabia“Detection of genetic mutations in patients with breast cancer from Saudi Arabia using Ion AmpliSeq™ Cancer Hotspot Panel v.2.0. Genomic DNA was extracted from the peripheral blood of 32 Saudi Arabian BC patients with histologically confirmed invasive BC stages I-III and IV, as well from 32 healthy Saudi Arabian women using a QIAamp® DNA Mini Kit.”0.95saudi_context_rules_v1

Implementation of Next-Generation Sequencing in Saudi Arabia for HER2-Positive Breast Cancer.

PMID 35280536 | PMCID PMC8913378 | DOI 10.1016/j.sjbs.2021.10.044 · Saudi journal of biological sciences · 2022 · 6 validated mentions
TypeEntitySource evidenceConfidenceExtractor
genePIK3CA“We used TruSight Tumor 15 using Next-Generation Sequencing (NGS) to look at genetic changes in 126 Saudi women with stage I to IV breast cancer. c-MET (p = 0.001), c-KIT (p = 0.001), and PIK3CA (p = 0.0001), were shown to be substantially linked with HER2 positive patients.”0.98hgnc_dict_v1
phenotypebreast cancer“Implementation of Next-Generation Sequencing in Saudi Arabia for HER2-Positive Breast Cancer.”0.98phenotype_alias_lexicon_v2
geneBRAF“We also detected mutations in other genes, including BRAF, EGFR, and KRAS.”0.98hgnc_dict_v1
geneEGFR“We also detected mutations in other genes, including BRAF, EGFR, and KRAS.”0.98hgnc_dict_v1
TypeEntitySource evidenceConfidenceExtractor
genePIK3CA“Gene expression of GST-P, PCNA, PDK, and PIK3CA decreased in the DMBA group treated with α-aminophosphonates and arylidine derivatives of 3-acetyl-1-aminoquinolin-2(1H)-one, whereas PIK3R1 and BAX increased in the DMBA group treated with α-aminophosphonates and arylidine derivatives of 3-acetyl-1-aminoquinolin-2(1H)-one.”0.98hgnc_dict_v1
phenotypebreast cancer“Investigation of the Anticancer Effect of α-Aminophosphonates and Arylidine Derivatives of 3-Acetyl-1-aminoquinolin-2(1H)-one on the DMBA Model of Breast Cancer in Albino Rats with In Silico Prediction of Their Thymidylate Synthase Inhibitory Effect.”0.98phenotype_alias_lexicon_v2
genePCNA“Gene expression of GST-P, PCNA, PDK, and PIK3CA decreased in the DMBA group treated with α-aminophosphonates and arylidine derivatives of 3-acetyl-1-aminoquinolin-2(1H)-one, whereas PIK3R1 and BAX increased in the DMBA group treated with α-aminophosphonates and arylidine derivatives of 3-acetyl-1-aminoquinolin-2(1H)-one.”0.98hgnc_dict_v1
genePIK3R1“Gene expression of GST-P, PCNA, PDK, and PIK3CA decreased in the DMBA group treated with α-aminophosphonates and arylidine derivatives of 3-acetyl-1-aminoquinolin-2(1H)-one, whereas PIK3R1 and BAX increased in the DMBA group treated with α-aminophosphonates and arylidine derivatives of 3-acetyl-1-aminoquinolin-2(1H)-one.”0.98hgnc_dict_v1

Mutational pattern of PIK3CA exon 20 in circulating DNA in breast cancer.

PMID 35531214 | PMCID PMC9073026 | DOI 10.1016/j.sjbs.2022.01.002 · Saudi journal of biological sciences · 2022 · 3 validated mentions
TypeEntitySource evidenceConfidenceExtractor
genePIK3CA“Mutational pattern of PIK3CA exon 20 in circulating DNA in breast cancer.”0.98hgnc_dict_v1
phenotypebreast cancer“Mutational pattern of PIK3CA exon 20 in circulating DNA in breast cancer.”0.98phenotype_alias_lexicon_v2
geneRAC1“PIK3CA mutations were found to disrupt several pathways including RAC1, PDGF, Wnt, and integrin signalling.”0.98hgnc_dict_v1

Prognostic significance of heat shock protein 90AA1 (HSP90α) in invasive breast cancer.

PMID 33766957 | DOI 10.1136/jclinpath-2020-207106 · Journal of clinical pathology · 2022 · 2 validated mentions
TypeEntitySource evidenceConfidenceExtractor
genePIK3CA“RESULTS: High expression of HSP90ΑA1 both at the mRNA and protein levels was significantly associated with characteristics of BC poor prognosis, including high grade, lymphovascular invasion, poor Nottingham Prognostic Index and positive expression of p53 and PIK3CA.”0.98hgnc_dict_v1
phenotypebreast cancer“Prognostic significance of heat shock protein 90AA1 (HSP90α) in invasive breast cancer.”0.98phenotype_alias_lexicon_v2

Landscape of somatic mutations in breast cancer: new opportunities for targeted therapies in Saudi Arabian patients.

PMID 33868589 | PMCID PMC8021026 | DOI 10.18632/oncotarget.27909 · Oncotarget · 2021 · 14 validated mentions
TypeEntitySource evidenceConfidenceExtractor
genePIK3CA“Among the genes analyzed, the highest mutation rates were found in PIK3CA (12.9%), BRCA2 (11.7%), BRCA1 (10.2%), TP53 (6.0%), MSH2 (3.8%), PMS2 (3.8%), BARD1 (3.8%), MLH1 (3.4%), CDH1 (3.0%), RAD50 (3.0%), MSH6 (3.0%), NF1 (2.6%), in addition to others.”0.98hgnc_dict_v1
phenotypebreast cancer“Landscape of somatic mutations in breast cancer: new opportunities for targeted therapies in Saudi Arabian patients.”0.98phenotype_alias_lexicon_v2
geneBRCA2“Among the genes analyzed, the highest mutation rates were found in PIK3CA (12.9%), BRCA2 (11.7%), BRCA1 (10.2%), TP53 (6.0%), MSH2 (3.8%), PMS2 (3.8%), BARD1 (3.8%), MLH1 (3.4%), CDH1 (3.0%), RAD50 (3.0%), MSH6 (3.0%), NF1 (2.6%), in addition to others.”0.98hgnc_dict_v1
geneBRCA1“Among the genes analyzed, the highest mutation rates were found in PIK3CA (12.9%), BRCA2 (11.7%), BRCA1 (10.2%), TP53 (6.0%), MSH2 (3.8%), PMS2 (3.8%), BARD1 (3.8%), MLH1 (3.4%), CDH1 (3.0%), RAD50 (3.0%), MSH6 (3.0%), NF1 (2.6%), in addition to others.”0.98hgnc_dict_v1

Helical and kinase domain mutations of PIK3CA, and their association with hormone receptor expression in breast cancer.

PMID 31404155 | PMCID PMC6676675 | DOI 10.3892/ol.2019.10565 · Oncology letters · 2019 · 6 validated mentions
TypeEntitySource evidenceConfidenceExtractor
genePIK3CA“Helical and kinase domain mutations of PIK3CA, and their association with hormone receptor expression in breast cancer.”0.98hgnc_dict_v1
phenotypebreast cancer“Helical and kinase domain mutations of PIK3CA, and their association with hormone receptor expression in breast cancer.”0.98phenotype_alias_lexicon_v2
populationSaudi Arabia“A total of 118 tumor samples from confirmed breast cancer patients were collected from the histopathology laboratory at King Fahd Hospital of the University (Al-Khobar, Saudi Arabia). Three mutations, namely E542K and E545K within exon 9, and H1047R within exon 20, were observed in 25 patients (21.2%).”0.95saudi_context_rules_v1
variantE542K“Three mutations, namely E542K and E545K within exon 9, and H1047R within exon 20, were observed in 25 patients (21.2%).”0.82literature_variant_regex_v2
TypeEntitySource evidenceConfidenceExtractor
genePIK3CA“Structural prediction, whole exome sequencing and molecular dynamics simulation confirms p.G118D somatic mutation of PIK3CA as functionally important in breast cancer patients.”0.98hgnc_dict_v1
phenotypebreast cancer“Structural prediction, whole exome sequencing and molecular dynamics simulation confirms p.G118D somatic mutation of PIK3CA as functionally important in breast cancer patients.”0.98phenotype_alias_lexicon_v2
variantp.G118D“Structural prediction, whole exome sequencing and molecular dynamics simulation confirms p.G118D somatic mutation of PIK3CA as functionally important in breast cancer patients.”0.95hgvs_regex_v1
variantp.E545A“Most recurrent mutations found were known hotspot PIK3CA mutations with known clinical significance like p.E545 K, p.E545A, p.E545 G and p.C420R.”0.95hgvs_regex_v1

Overcoming endocrine resistance in hormone receptor-positive breast cancer.

PMID 29910644 | PMCID PMC6001756 | DOI 10.3747/co.25.3752 · Current oncology (Toronto, Ont.) · 2018 · 2 validated mentions
TypeEntitySource evidenceConfidenceExtractor
genePIK3CA“In some cases, resistance develops as a result of genetic or epigenetic alterations in various components of the signalling pathways, such as overexpression of her2 and erα co-activators, aberrant expression of cell-cycle regulators, and PIK3CA mutations.”0.98hgnc_dict_v1
phenotypebreast cancer“Overcoming endocrine resistance in hormone receptor-positive breast cancer.”0.98phenotype_alias_lexicon_v2
TypeEntitySource evidenceConfidenceExtractor
genePIK3CA“The predictive and prognostic role of phosphatase phosphoinositol-3 (PI3) kinase (PIK3CA) mutation in HER2-positive breast cancer receiving HER2-targeted therapy: a meta-analysis.”0.98hgnc_dict_v1
phenotypebreast cancer“The predictive and prognostic role of phosphatase phosphoinositol-3 (PI3) kinase (PIK3CA) mutation in HER2-positive breast cancer receiving HER2-targeted therapy: a meta-analysis.”0.98phenotype_alias_lexicon_v2
genePI3“The predictive and prognostic role of phosphatase phosphoinositol-3 (PI3) kinase (PIK3CA) mutation in HER2-positive breast cancer receiving HER2-targeted therapy: a meta-analysis.”0.98hgnc_dict_v1

Prevalence of PIK3CA mutations and the SNP rs17849079 in Arab breast cancer patients.

PMID 23982433 | PMCID PMC3926885 | DOI 10.4161/cbt.25945 · Cancer biology & therapy · 2013 · 9 validated mentions
TypeEntitySource evidenceConfidenceExtractor
genePIK3CA“Prevalence of PIK3CA mutations and the SNP rs17849079 in Arab breast cancer patients.”0.98hgnc_dict_v1
phenotypebreast cancer“Prevalence of PIK3CA mutations and the SNP rs17849079 in Arab breast cancer patients.”0.98phenotype_alias_lexicon_v2
variantp.His1047Arg“The majority of the mutations, 17 out of 21 (81%), were in exon 20 (p.His1047Arg, p.His1047Lys, p.Thr1025Ala, p.Gly1049Arg, p.Asp1056Asn) while the remainder, 4 out of 21 (19%) were in exon 9 (p.Glu545Lys).”0.95hgvs_regex_v1
variantp.His1047Lys“The majority of the mutations, 17 out of 21 (81%), were in exon 20 (p.His1047Arg, p.His1047Lys, p.Thr1025Ala, p.Gly1049Arg, p.Asp1056Asn) while the remainder, 4 out of 21 (19%) were in exon 9 (p.Glu545Lys).”0.95hgvs_regex_v1