Pik3ca Inhibitor Breast Cancer

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CDK 4/6 inhibitors sensitize PIK3CA mutant breast cancer

(1 days ago) Activation of the phosphoinositide 3-kinase (PI3K) pathway occurs frequently in breast cancer. However, clinical results of single-agent PI3K inhibitors have been modest to date. A combinatorial drug screen on multiple PIK3CA mutant cancers with decreased sensitivity to PI3K inhibitors revealed that …

https://pubmed.ncbi.nlm.nih.gov/25002028/

Category:  Breast cancer Show Health

Targeting PIK3CA in HER2-positive breast cancer: what are

(1 days ago) Targeting PIK3CA in HER2 -positive breast cancer: what are the opportunities and the challenges? Targeting. PIK3CA. in. HER2. -positive breast cancer: what are the opportunities and the challenges? Biomark Med. 2021 Jun;15 (9):609-613. doi: 10.2217/bmm-2021-0236.

https://pubmed.ncbi.nlm.nih.gov/34060324/

Category:  Breast cancer Show Health

Efficacy of PI3K inhibitors in advanced breast cancer

(3 days ago) In breast cancer, the most common molecular alterations in the PI3K pathway are activating mutations in the PIK3CA gene, inducing hyperactivation of p110α. Hence, development in breast cancer patients has been focused on inhibitors with higher selection for this isoform.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6923787/

Category:  Breast cancer Show Health

PIK3CA Mutation in Breast Cancer: Treatment and More

(9 days ago) A mutation in the PIK3CA gene can cause cells to divide and replicate uncontrollably. It contributes to the growth of many cancers, including metastatic breast cancer (MBC). If your tumor has a PIK3CA mutation, new treatments that specifically target this mutation could be used to treat your cancer.

https://kankans.office-on-the.net/health/metastatic-breast-cancer/pik3ca-mutation-and-breast-cancer

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The Role of PI3K Inhibition in the Treatment of Breast

(3 days ago) With the approval of the alpha selective PI3K inhibitor alpelisib in HR + /HER2 – PIK3CA-mutated advanced/metastatic breast cancer patients after progression on ET, several clinical trials evaluate its efficacy in advanced TNBC, and HER2 + subtypes are ongoing (NCT04208178; NCT04216472). The success of SOLAR-1 demonstrates that stratification

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8139556/

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FDA approves first PI3K inhibitor for breast cancer FDA

(9 days ago) FDA approves first PI3K inhibitor for breast cancer. For Immediate Release: May 24, 2019. Today, the U.S. Food and Drug Administration approved Piqray (alpelisib) tablets, to be used in

https://www.fda.gov/news-events/press-announcements/fda-approves-first-pi3k-inhibitor-breast-cancer

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PIK3CA Mutation in Breast Cancer: Treatment and More

(2 days ago) There are also several other PIK3CA inhibitors under investigation in clinical trials in people with advanced breast cancer and a mutation in the PIK3CA gene, including taselisib and pictilisib

https://www.healthline.com/health/metastatic-breast-cancer/pik3ca-mutation-and-breast-cancer

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PIK3CA-mutated Metastatic Breast Cancer

(4 days ago) Patients with PIK3CA- mutated triple-negative breast cancer (TNBC) present a better overall survival (OS). This could be explained by an enrichment of PIK3CA mutations in luminal breast cancer which lost HR expression in the metastatic setting. The results were published online on 24 January 2020 in the Annals of Oncology.

https://www.esmo.org/oncology-news/pik3ca-mutated-metastatic-breast-cancer

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PIK3CA Matters Official HCP Site

(3 days ago) PIK3CA mutations are found in ~40% of HR+ breast cancer patients and associated with a poor prognosis 1-3,5. HR=hormone receptor. Sabine VS, Crozier C, Brookes CL, et al. Mutational analysis of PI3K/AKT signaling pathway in Tamoxifen Exemestane Adjuvant Multinational pathology study. J Clin Oncol. 2014;32 (27):2951 - 2958.

https://www.pik3ca.com/

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Novartis succeeds where Roche failed with PI3K breast

(1 days ago) August 23, 2018. Novartis published trial results showing its drug succeeded in tackling difficult to treat breast cancer with PIK3CA mutation, after other pharma giants including Roche failed and

https://pharmaphorum.com/news/novartis-success-breast-cancer-inhibitor/

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Guardant Health, Inc. - Study Shows Guardant360 Test

(Just Now) Many women with metastatic hormone receptor-positive (HR+) breast cancer have experienced improved clinical outcomes with the recent introduction of alpelisib, a PIK3CA inhibitor. A new study led by Memorial Sloan Kettering Cancer Center and published in Nature Cancer 1 demonstrates that the Guardant360 ® liquid biopsy test effectively identified patients …

https://investors.guardanthealth.com/press-releases/press-releases/2020/Study-Shows-Guardant360-Test-Identifies-Predictors-of-Response-to-PIK3CA-Inhibitors-in-Women-with-HR-Metastatic-Breast-Cancer/default.aspx

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FDA Approves First PI3K Inhibitor for Breast Cancer

(1 days ago) Piqray (alpelisib) is a targeted therapy called a PI3K inhibitor. It’s specifically for advanced breast cancer patients – postmenopausal women and men – whose tumors have the PIK3CA mutation and are hormone receptor (HR) positive and HER2 negative. PIK3CA mutations are found in about 30-40% of breast cancers.

https://www.cancer.org/latest-news/fda-approves-first-pi3k-inhibitor-for-breast-cancer.html

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Alpelisib for PIK3CA-Mutated, Hormone Receptor–Positive

(1 days ago) Abstract Background PIK3CA mutations occur in approximately 40% of patients with hormone receptor (HR)–positive, human epidermal growth factor receptor 2 …

https://www.nejm.org/doi/full/10.1056/NEJMoa1813904

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Frequency and spectrum of PIK3CA somatic mutations in

(4 days ago) The therascreen PIK3CA mutation assay and the alpha-specific PI3K inhibitor alpelisib are FDA-approved for identifying and treating patients with advanced PIK3CA-mutated (PIK3CAmut) breast cancer (BC). However, it is currently unknown to what extend this assay detects most PIK3CA mutations in BC. This information is critical as patients and clinicians are …

https://breast-cancer-research.biomedcentral.com/articles/10.1186/s13058-020-01284-9

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PI3K inhibitors are finally coming of age Nature Reviews

(Just Now) Given that PIK3CA mutations are common across the different types of breast cancer, including triple-negative breast cancer (TNBC) 134, there is an interest in clinically exploring PI3K inhibition

https://www.nature.com/articles/s41573-021-00209-1

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Double PIK3CA mutations in cis increase oncogenicity and

(1 days ago) Activating mutations in PIK3CA are frequent in human breast cancer, and phosphoinositide 3-kinase alpha (PI3Kα) inhibitors have been approved for therapy. To characterize determinants of sensitivity to these agents, we analyzed PIK3CA-mutant cancer genomes and observed the presence of multiple PIK3CA mutations in 12 to 15% of breast

https://www.science.org/doi/10.1126/science.aaw9032

Category:  Breast cancer Show Health

PI3K/AKT/mTOR Inhibitors in Patients With Breast and

(9 days ago) Purpose Mutations of the PIK3CA gene may predict response to phosphatidylinositol 3-kinase (PI3K)/AKT/mammalian target of rapamycin (mTOR) inhibitors. Concomitant mutations in the mitogen-activated protein kinase (MAPK) pathway may mediate resistance. Patients and Methods Tumors from patients with breast, cervical, endometrial, and …

https://ascopubs.org/doi/10.1200/JCO.2011.36.1196

Category:  Cancer Show Health

Acquired PIK3CA amplification causes resistance to

(4 days ago) We sought to identify and delineate mechanisms of resistance to a selective PI3K inhibitor, GDC-0941, in HER2-positive KPL-4 breast cancer cells that harbor a PIK3CA mutation and are dependent on

https://www.nature.com/articles/oncsis201346

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PIK3CA Mutations in Metastatic Breast Cancer

(3 days ago) PIK3CA gene mutations are genetic changes found in some breast cancers (as well as other cancers) that appear to promote the growth of the tumors. PIK3 (phosphoinositide 3-kinase), the protein produced by this gene, is part of a signaling pathway that has been studied extensively in the hope of halting the growth of metastatic breast cancer.

https://www.verywellhealth.com/pik3ca-mutations-in-metastatic-breast-cancer-4689488

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FDA approves Novartis Piqray® - the first and only

(6 days ago) Piqray is a kinase inhibitor approved in combination with fulvestrant for the treatment of postmenopausal women, and men, with HR+/HER2-, PIK3CA-mutated, advanced or metastatic breast cancer, as detected by an FDA-approved test following progression on or after endocrine-based regimen[1].

https://www.novartis.com/news/media-releases/fda-approves-novartis-piqray-first-and-only-treatment-specifically-patients-pik3ca-mutation-hrher2-advanced-breast-cancer

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CANCER Double PIK3CA mutations in cis increase

(5 days ago) Activating mutations in PIK3CA are frequent in human breast cancer, and phosphoinositide 3-kinase alpha (PI3Ka) inhibitors have been approved for therapy. To characterize determinants of sensitivity to these agents, we analyzed PIK3CA-mutant cancer genomes and observed the presence of multiple

https://www.science.org/doi/pdf/10.1126/science.aaw9032

Category:  Breast cancer Show Health

PI3K Inhibitors for PIK3CA-Mutated HR+ MBC

(Just Now) Considerations for treating patients with HR+/HER2- metastatic breast cancer with alpelisib, a PI3K inhibitor, following frontline treatment with a CDK4/6 inhibitor. EP. 1: Identifying PIK3CA

https://www.onclive.com/view/pi3k-inhibitors-for-pik3ca-mutated-hr-mbc

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PIK3CA mutations and downstream effector p-mTOR expression

(3 days ago) Although PIK3CA mutations and phosphorylated mTOR (p-mTOR) expression are two main events on PI3K/Akt/mTOR pathway, limited data has reported their roles in triple negative breast cancer (TNBC). Thus, we evaluated the associations of these two biomarkers and clinicopathological characteristics and prognosis in large Chinese TNBC patients.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6965305/

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Alpelisib Impresses in PIK3CA+ Breast Cancer After

(8 days ago) Among the 100 patients with PIK3CA-positive tumors and measurable disease at baseline, the ORR was 21%, comprising all PRs.Across the subgroup, 55.5% of patients had stable disease and 11%

https://www.onclive.com/view/alpelisib-impresses-in-pi3kca-breast-cancer-after-progression-on-cdk-inhibition

Category:  Cancer Show Health

How Is PIK3CA Mutation Treated? Piqray for Breast Cancer

(Just Now) The U.S. Food and Drug Administration (FDA) has approved the drug Piqray (alpelisib) for the treatment of PIK3CA mutations associated with advanced breast cancer.This drug is marketed by Novartis and is classified as a phosphatidylinositol 3-kinase inhibitor (a type of targeted therapy for cancer cells with PI3KCA mutation).. Piqray is specifically used to treat …

https://www.medicinenet.com/how_is_pik3ca_mutation_treated/article.htm

Category:  Breast cancer Show Health

Response of Brain Metastases From PIK3CA-Mutant Breast

(4 days ago) Response of Brain Metastases From. PIK3CA. -Mutant Breast Cancer to Alpelisib. Activating mutations of PIK3CA are found in 25%-40% of estrogen receptor–positive (ER+), HER2-negative (HER2−) breast cancers (BC), and in 8% of ER-negative (ER−) BC. 1 - 5 Two recent studies support the benefit of PI3K inhibition in combination with endocrine

https://ascopubs.org/doi/10.1200/PO.19.00403

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Breast Cancer Study Shows Number of Mutated PIK3CA Alleles

(3 days ago) In 2019, the US Food and Drug Administration approved a PI3K-alpha-specific inhibitor alpelisib (Novartis' Piqray) for treating certain advanced, hormone receptor-positive, PIK3CA-mutated breast cancers in combination with an estrogen receptor antagonist, following findings of the SOLAR-1 clinical trial.

https://www.precisiononcologynews.com/sequencing/breast-cancer-study-shows-number-mutated-pik3ca-alleles-affects-tumor-aggressiveness

Category:  Cancer Show Health

About PIK3CA Mutation & PIQRAY® (alpelisib) tablets MOA HCP

(6 days ago) Indication. PIQRAY ® (alpelisib) tablets is indicated in combination with fulvestrant for the treatment of postmenopausal women, and men, with hormone receptor (HR)-positive, human epidermal growth factor receptor 2 (HER2)-negative, PIK3CA-mutated, advanced or metastatic breast cancer as detected by an FDA-approved test following progression on or after an …

https://www.hcp.novartis.com/products/piqray/metastatic-breast-cancer/pik3ca-mutation/

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(PDF) PIK3CA Mutation is Associated with Poor Response to

(Just Now) Purpose Mutations in PIK3CA gene occur frequently in patients with breast cancer. Activating PIK3CA mutations have been shown to confer resistance to human epidermal growth factor receptor (HER)2

https://www.researchgate.net/publication/357923433_PIK3CA_Mutation_is_Associated_with_Poor_Response_to_HER2-Targeted_Therapy_in_Breast_Cancer_Patients

Category:  Breast cancer Show Health

CDK4/6 Blockade Improves the Efficacy - Cancer Discovery

(8 days ago) Activation of PI3K signaling is a common feature of many breast cancers and frequently occurs via mutations in the PIK3CA oncogene encoding the PI3K p110α subunit. However, PI3K inhibitors have shown only modest clinical efficacy, and patients with PIK3CA-mutant tumors often develop acquired resistance.Recent studies have shown that dual inhibition of mTOR …

https://cancerdiscovery.aacrjournals.org/content/4/9/983.2

Category:  Cancer Show Health

First PI3K Inhibitor for Breast Cancer Breast Cancer

(7 days ago) Alpelisib has received FDA approval for postmenopausal women, and men, with advanced or metastatic breast cancer whose tumors have a mutation in the PIK3CA gene. The drug is indicated for use in combination with the antiestrogen medication fulvestrant to treat hormone receptor (HR)–positive, human

https://jamanetwork.com/journals/jama/fullarticle/2737154

Category:  Breast cancer Show Health

Alpelisib/Letrozole Combo Sustains Efficacy in PIK3CA

(7 days ago) In May 2019, the FDA approved the PI3K inhibitor alpelisib for use in combination with fulvestrant as a treatment for postmenopausal women, and men, with HR-positive, HER2-negative, PIK3CA-mutant, advanced or metastatic breast cancer following progression on or after an endocrine-based regimen.

https://www.cancernetwork.com/view/alpelisib-letrozole-combo-sustains-efficacy-in-pik3ca-mutant-hr-her2--advanced-breast-cancer

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cancerdiscovery.aacrjournals.org

(7 days ago) These findings support further investigation of this combination as a means to overcome PI3K inhibitor resistance in patients with *PIK3CA*-mutant breast cancer. *[Vora SR, Juric D, Kim N, Mino-Kenudson M, Huynh T, Costa C, et al. CDK 4/6 inhibitors sensitize PIK3CA mutant breast cancer to PI3K inhibitors.

https://cancerdiscovery.aacrjournals.org/content/4/9/983.2.full.txt

Category:  Breast cancer Show Health

Targeting PI3K in cancer: mechanisms and advances in

(7 days ago) PIK3CA (phosphatidylinositol 3-kinase, catalytic, α-polypeptide), the gene encoding the p110α subunit, are frequently mutated or amplified in the most common human cancers, such as breast cancers, colon cancer, gastric cancer, cervical cancer, prostate cancer, and lung cancer [26,27,28,29,30,31].

https://molecular-cancer.biomedcentral.com/articles/10.1186/s12943-019-0954-x

Category:  Cancer Show Health

Combination of PI3K and MEK inhibitors yields durable

(Just Now) Metaplastic breast cancer (MBC) is a rare form of breast cancer characterized by an aggressive clinical presentation, with a poor response to standard chemotherapy. MBCs are typically triple-negative breast cancers (TNBCs), frequently with alterations to genes of the PI3K-AKT-mTOR and RTK-MAPK signaling pathways. The objective of this study was to determine …

https://jhoonline.biomedcentral.com/articles/10.1186/s13045-020-0846-y

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The Dual PI3K/mTOR Pathway Inhibitor GDC-0084 Achieves

(7 days ago) inhibitor that has shown promising activity in a preclinical model of glioblastoma. The aim of this study was to analyze the efficacy of PI3K/mTOR blockade in breast cancer brain metastases models. Experimental Design: The efficacy of GDC-0084 was eval-uated in PIK3CA-mutant and PIK3CA wild-type breast cancer

https://clincancerres.aacrjournals.org/content/clincanres/25/11/3374.full.pdf

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Lactate Lights up PI3K Inhibitor Resistance in Breast Cancer

(7 days ago) Mutations in PIK3CA occur at high frequencies in breast cancer, in particular in estrogen-receptor-positive (ER +) breast cancer (Ellis and Perou, 2013). Potent and selective small molecule inhibitors of the PI3K pathway have been developed, and to date, isoform-selective PI3K inhibitors have had the most clinical success (Hanker et al., 2019).

https://www.sciencedirect.com/science/article/pii/S1535610820304852

Category:  Breast cancer Show Health

Phase II trial of AKT inhibitor MK-2206 in patients with

(3 days ago) The PI3K/AKT pathway is activated through PIK3CA or AKT1 mutations and PTEN loss in breast cancer. We conducted a phase II trial with an allosteric AKT inhibitor MK-2206 in patients with advanced breast cancer who had tumors with PIK3CA/AKT1 mutations and/or PTEN loss/mutation. The primary endpoint was objective response rate (ORR). Secondary …

https://breast-cancer-research.biomedcentral.com/articles/10.1186/s13058-019-1154-8

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mTOR Inhibitors in the Treatment of Breast Cancer

(4 days ago) PIK3CA (p110 catalytic subunit alpha) mutations have been identified as a common occurrence in breast cancer,[6] with a higher frequency in the estrogen receptor (ER)-positive and human epidermal growth factor receptor 2 (HER2)-positive subtypes than in triple-negative breast cancer (TNBC).[7]

https://www.cancernetwork.com/view/mtor-inhibitors-treatment-breast-cancer

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ASCO: Alpelisib Plus Fulvestrant for PIK3CA-Mutated Breast

(4 days ago) Alpelisib is an alpha-specific inhibitor of PIK3CA and has been previously shown, in a phase III trial called SOLAR-1, to have benefit in patients when combined with fulvestrant as a combination therapy in patients with hormone receptor-positive HER2-negative breast cancer, who had previously received endocrine therapy. In that study, we saw

https://www.practiceupdate.com/content/asco-alpelisib-plus-fulvestrant-for-pik3ca-mutated-breast-cancer-after-failure-of-cdk46-inhibitors/102111

Category:  Breast cancer Show Health

Response to mTOR and PI3K inhibitors in enzalutamide

(3 days ago) PIK3CA mutations in androgen receptor-positive triple negative breast cancer confer sensitivity to the combination of PI3K and androgen receptor inhibitors. Breast Cancer Res. 2014;16:406 14. Bruna A, Rueda OM, Greenwood W, Batra AS, Callari M, Batra RN. et al.

https://www.thno.org/v10p1531.htm

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Study to Assess the Efficacy and Safety of Alpelisib Plus

(7 days ago) EPIK-B5: A Phase III, Randomized, Double-blind, Placebo-controlled Study of Alpelisib in Combination With Fulvestrant for Men and Postmenopausal Women With HR-positive, HER2-negative Advanced Breast Cancer With a PIK3CA Mutation, Who Progressed on or After Aromatase Inhibitor and a CDK4/6 Inhibitor: Actual Study Start Date : November 29, 2021

https://clinicaltrials.gov/ct2/show/NCT05038735

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JPM Free Full-Text Use of Circulating Tumour DNA

(3 days ago) Another approved ctDNA test for predicting response to a specific therapy involves mutation analysis of PIK3CA for identifying patients with advanced breast cancer likely to benefit from treatment with the α-specific PIK3CA inhibitor, alpelisib (in combination with the oestrogen receptor degrading compound, fulvestrant) .

https://www.mdpi.com/2075-4426/12/1/99/html

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Alpelisib Plus Fulvestrant in PIK3CA-Mutated, HR+ Advanced

(Just Now) Alpelisib, a PI3Kα-selective inhibitor and degrader, plus fulvestrant showed efficacy in hormone receptor-positive, HER2-negative, PIK3CA-mutated advanced breast cancer in SOLAR-1; limited data are available in the post-cyclin-dependent kinase 4/6 inhibitor setting.

https://www.practiceupdate.com/content/alpelisib-plus-fulvestrant-in-pik3ca-mutated-hr-advanced-breast-cancer-after-a-cdk46-inhibitor/116189

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mTORC1 Inhibition is Required for Sensitivity to PI3K

(7 days ago) Activating mutations of the PIK3CA gene occur frequently in breast cancer, and inhibitors that are specific for phosphatidylinositol 3-kinase (PI3K) p110a, such as BYL719, are being investigated in clinical trials.

https://cris.bgu.ac.il/en/publications/mtorc1-inhibition-is-required-for-sensitivity-to-pi3k-p110α-inhib-3

Category:  Breast cancer Show Health

Effect on alpelisib benefit of having 6 months or less or

(7 days ago) ABC—Advanced breast cancer, or a type of breast cancer that has spread to other parts of the body.21 Alpelisib—A targeted therapy tested in the SOLAR-1 study that slows the growth or spread of PIK3CA-mutated breast cancer.17 Aromatase inhibitor—A type of ET, or hormone therapy, used in HR+, HER2– ABC.21

https://www.medicalcongress.novartisoncology.com/SABCS/BC/pdf/pls/Chia_Pls_P1-18-03.pdf

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