VIKTORIA-2: A Randomized, Open-Label, Phase 3 Study of Fulvestrant and CDK4/6 Inhibitors With or Without Gedatolisib as First-Line Treatment in Patients With HR-Positive and HER2-Negative Advanced Breast Cancer

This is a Phase 3, open-label, randomized, clinical trial evaluating the efficacy and safety of gedatolisib plus fulvestrant and CDK4/6 Inhibitors for the treatment of patients with locally advanced or metastatic HR+/HER2- advanced breast cancer.

Start Date30 Jun 2025

Sponsor / Collaborator

Celcuity, Inc.

NCT06753747

/ Not yet recruitingPhase 1/2IIT

A Phase 1b/2 Trial of Afatinib Plus Palbociclib in Previously Treated Recurrent or Metastatic Esophageal Squamous Cell Carcinoma

The goal of this clinical trial is to learn if Afatinib plus Palbociclib works in previously treated recurrent or metastatic esophageal squamous cell carcinoma. It will also learn about the safety of the combination of Afatinib and Palbociclib. The main questions it aims to answer are:
What is the safe and tolerable dose of Afatinib when combined with 100 mg of Palbociclib (administered orally, three weeks on and one week off)?
Does the combination therapy of Afatinib and Palbociclib induce a tumor response in patients with recurrent or metastatic esophageal squamous cell carcinoma who have received prior treatments?

Start Date01 Apr 2025

Sponsor / Collaborator

West China Hospital

NCT06810492

/ Not yet recruitingNot ApplicableIIT

A Single-arm Exploratory Study of the Efficacy and Safety of CDK4/6 Inhibitors in Combination with Endocrine Therapy in the Neoadjuvant Treatment of HR+/HER2- Early Breast Cancer

To explore the efficacy and safety of CDK4/6 inhibitors combined with endocrine neoadjuvant therapy for stage II-III HR-positive/HER2-negative breast cancer.
This study adopts a single-arm, open-label design, and plans to include 40 patients with stage II-III HR+/HER2- breast cancer.

Start Date01 Apr 2025

Sponsor / Collaborator

Hubei Cancer Hospital

100 Clinical Results associated with Palbociclib

100 Translational Medicine associated with Palbociclib

100 Patents (Medical) associated with Palbociclib

3,411

Literatures (Medical) associated with Palbociclib

01 May 2025·International Journal of Cancer

Head‐to‐head comparison of palbociclib and ribociclib in first‐line treatment of HR‐positive/HER2‐negative metastatic breast cancer with real‐world data from the OPAL registry

Article

Author: Schulz, Holger ; Fricker, Roland ; Hagen, Volker ; Engelken, Kathrin ; Welt, Anja ; Dille, Stephanie ; Gratzke, Katja ; Ringwald, Kai ; Harbeck, Nadia ; Kaltenecker, Gabriele ; Nusch, Arnd ; Stickeler, Elmar ; Zahn, Mark‐Oliver ; Decker, Thomas ; Jänicke, Martina ; Kruggel, Lisa ; Wöckel, Achim ; Zaiss, Matthias ; Thill, Marc

AbstractCyclin‐dependent kinase 4/6 inhibitors (CDKIs) in combination with endocrine therapy (ET) are the standard‐of‐care in the first‐line treatment of HR‐positive, HER2‐negative metastatic breast cancer. In the absence of direct head‐to‐head trials comparing the efficacy and safety of the different CDKIs, the individual choice of treatment in everyday practice is complex. Inverse probability of treatment weighting was used to emulate a head‐to‐head comparison of palbociclib +ET (PALBO) and ribociclib +ET (RIBO) in patients recruited into the prospective, observational, multicenter registry platform OPAL (NCT03417115). Progression‐free survival (PFS), overall survival (OS) and quality of life surveys were analyzed, also for subgroups stratified by treatment‐free interval (TFI). A total of 623 patients with HR‐positive, HER2‐negative metastatic breast cancer received PALBO (n = 388) or RIBO (n = 235) in their first line of treatment. No difference between PALBO and RIBO was found for PFS (median 26.7 months [23.6, 30.7] vs. 27.0 months [21.1, 30.4], HR 1.01 [0.80, 1.27]) and OS (median 42.4 months [38.8, 50.3] vs. 49.3 months [36.9, NA], HR 0.96 [0.71, 1.28]). There was a trend for longer PFS and OS in patients with TFI <12 months receiving RIBO. Patients reported comparable side effects for both CDKIs. This head‐to‐head comparison revealed no difference in PFS and OS between PALBO and RIBO, however, a trend to longer PFS and OS with RIBO was observed in the subgroup of patients with TFI <12 months. Side effects experienced with PALBO and RIBO highlight the important toxicities to be addressed during treatment decision.

01 Apr 2025·Current Pharmaceutical Design

Exploration of Novel Therapeutic Targets for Breast Carcinoma and Molecular Docking Studies of Anticancer Compound Libraries with Cyclin-dependent Kinase 4/6 (CDK4/6): A Comprehensive Study of Signalling Pathways for Drug Repurposing

Article

Author: Najmi, Asim

Aims:This study aims to identify and evaluate promising therapeutic proteins and compounds for breast cancer treatment through a comprehensive database search and molecular docking analysis.Background:Breast cancer (BC), primarily originating from the terminal ductal-lobular unit of the breast, is the most prevalent form of cancer globally. In 2020, an estimated 2.3 million new cases were reported, resulting in approximately 685,000 deaths. Mutations in the BRCA1 and BRCA2 genes are well-established in hereditary breast cancer. The identification of effective therapeutic proteins for BC remains a complex and evolving area of research.Objective:This study aims to identify and evaluate promising therapeutic proteins and compounds specific to breast cancer through a comprehensive database search and molecular docking analysis.Methods:A rigorous search was conducted within the National Cancer Institute (NCI), NCI Metathesaurus, SIGnaling Network Open Resource (SIGNOR), Human Protein Atlas (HPA), and the Human Phenotype Ontology (HPO) to shortlist proteins linked to BC (CUI C0678222). Recent studies were reviewed to understand the administration of CDK4/6 inhibitors (palbociclib, ribociclib, abemaciclib) combined with endocrine therapy for HR-positive and HER2-negative breast cancer. Anticancer compound libraries available at ZINC and PubChem were analyzed. Compounds were evaluated based on their binding energies with CDK4 protein, a rationally selected druggable target.Results:Key proteins linked to breast cancer were identified through database searches. Proliferation, apoptosis, and G1/S transition pathways were frequently found dysregulated in breast cancer. ZINC13152284 exhibited the strongest binding energy at -10.9 Kcal/mol, followed by ZINC05492794 with a binding energy of -10.4 Kcal/mol. Preexisting drugs showed lower binding energies with the CDK4 protein.Conclusion:The study highlights the importance of drug repurposing as a strategy for the safe and effective treatment of breast cancer. Synthetic inhibitors often cause severe side effects, emphasizing the need for novel targets and compounds with better therapeutic profiles. Molecular docking identified promising compounds from the ZINC database, suggesting potential new avenues for breast cancer therapy.

01 Apr 2025·International Journal of Cancer

Cyclin‐dependent kinase 4/6 inhibitors and cardiotoxic events in breast cancer: A pharmacovigilance study based on the FAERS database

Article

Author: Zhang, Miaomiao ; Zhao, Ming ; Li, Shaoqiang ; Cao, Weihang ; Li, Ting ; Zhang, Tian ; Huang, Jing ; Jin, Pengfei ; Kou, Chen

AbstractRecent trials have highlighted the cardiotoxicity of ribociclib, a CDK4/6 inhibitor, particularly its association with QT prolongation. However, studies on the link between CDK4/6 inhibitors and cardiotoxic events show inconsistent results, and the factors influencing these events and related drug interactions remain underexplored. To address these uncertainties, our study utilizes the FDA adverse event reporting system database (Q1 2015 to Q1 2024) to examine the cardiotoxic events of CDK4/6 inhibitors in breast cancer patients. We employed a comprehensive analytical framework, applying disproportionality methods including Bayesian confidence propagation neural network, proportional reporting ratio, and reporting odds ratio. Our findings highlight significant variability in cardiotoxic events among different CDK4/6 inhibitors, with ribociclib (IC: 0.26, 95%CI: 0.18–0.34) exhibiting pronounced cardiotoxicity. Notably, ribociclib was associated with serious cardiotoxic events such as torsade de pointes/QT prolongation (IC: 2.11, 95% CI: 1.90–2.29) and conduction defects (IC: 2.07, 95% CI: 1.87–2.23). For the first time, palbociclib has been identified with positive signals for cardiotoxic events at the preferred terms level, including pulmonary oedema, increased blood pressure, myocardial infarction, and cardiac flutter. Moreover, multivariable logistic regression and Bayesian network analyses reveal that age, geographic location, and the number of concomitant medications significantly influence cardiotoxic events. Our study also highlights significant drug interactions that increase the probability of specific cardiotoxic outcomes, notably with drugs like sertraline, lansoprazole, capecitabine, and torasemide. These findings highlight the need for personalized treatment plans to mitigate cardiotoxic events and improve patient safety.

362

News (Medical) associated with Palbociclib

13 Mar 2025

·www.prnewswire.com

VERZENIO's Market Potential Soars as Demand for CDK4/6 Inhibitors Grows | DelveInsight

As VERZENIO gains traction in early-stage treatments and broadens its approved uses, its revenue is expected to keep growing. While the global CDK4/6 inhibitor market remains highly competitive, VERZENIO's distinct clinical advantages and ongoing studies could contribute to further market expansion. LAS VEGAS, March 13, 2025 /PRNewswire/ -- DelveInsight's " VERZENIO Market Size, Forecast, and Market Insight Report" highlights the details around VERZENIO, which is a targeted treatment known as a CDK4/6 inhibitor. The drug is a non-chemotherapy oral tablet. The report provides product descriptions, patent details, and competitor products (marketed and emerging therapies) of VERZENIO. The report also highlights the historical and forecasted sales from 2020 to 2034 segmented into 7MM [the United States, the EU4 (Germany, France, Italy, and Spain), the United Kingdom, and Japan]. Eli Lilly and Company's VERZENIO (abemaciclib) Overview VERZENIO (abemaciclib) is a prescription medication used to treat adults with HR-positive, HER2-negative breast cancer that has metastasized (spread to other parts of the body). It is administered orally and is prescribed in combination with an aromatase inhibitor as an initial endocrine-based therapy. Additionally, the drug is being developed for the treatment of prostate cancer. VERZENIO is approved for the following indications: In combination with endocrine therapy for the adjuvant treatment of adults with HR+/HER2-, node-positive, early-stage breast cancer at high risk of recurrence. In combination with an aromatase inhibitor as the initial endocrine-based therapy for adults with HR+/HER2- advanced or metastatic breast cancer. In combination with fulvestrant for adults with HR+/HER2- advanced or metastatic breast cancer that has progressed after prior endocrine therapy. As monotherapy for adults with HR+/HER2- advanced or metastatic breast cancer that has progressed following endocrine therapy and prior chemotherapy in the metastatic setting. Learn more about VERZENIO projected market size for breast cancer @ VERZENIO Market Potential HR+/HER2- breast cancer is the most common subtype of breast cancer, defined by the presence of estrogen and progesterone hormone receptors but lacking HER2 overexpression. This form of breast cancer generally has a favorable prognosis and is primarily managed with hormone therapy to suppress hormone-driven tumor growth. According to DelveInsight's estimates, around 211,000 new cases of HR+/HER2− breast cancer were reported in the US in 2024. Over the past decade, endocrine therapy has remained the cornerstone of treatment, including for cases with visceral involvement. The current preferred approach involves combining endocrine therapy—using aromatase inhibitors or fulvestrant—with CDK4/6 inhibitors. The approval of CDK4/6 inhibitors has significantly transformed the treatment landscape for HR+/HER2− breast cancer. Currently, five selective CDK4/6 inhibitors— ENHERTU, DATROWAY, IBRANCE, KISQALI, and VERZENIO—are used in combination with endocrine therapy. In November 2023, the FDA approved TRUQAP (capivasertib) in combination with FASLODEX for patients with advanced HR+/HER2− breast cancer harboring specific biomarker alterations (PIK3CA, AKT1, or PTEN). The NCCN Guidelines have designated KISQALI as the only Category 1 Preferred CDK4/6 inhibitor for first-line treatment in combination with an aromatase inhibitor, strengthening its position in the U.S. market. This led to KISQALI recovering its lost market share, with its U.S. revenue contribution rebounding to 50%, following declines to 46% in 2020, 36% in 2021, and 38% in 2022. In January 2025, the FDA approved DATROWAY for patients with unresectable or metastatic HR+/HER2- breast cancer (IHC 0, IHC 1+, or IHC 2+/ISH-) who had previously received endocrine-based therapy and chemotherapy. Additionally, ENHERTU was approved for patients with unresectable or metastatic HR+, HER2-low (IHC 1+ or IHC 2+/ISH-) or HER2-ultralow (IHC 0 with membrane staining) breast cancer that had progressed after at least one prior endocrine therapy in the metastatic setting. Also, in January 2025, Roche reported positive topline results from its Phase III INAVO120 trial, assessing ITOVEBI in combination with IBRANCE and fulvestrant for patients with PIK3CA-mutated HR+/HER2−, endocrine-resistant, locally advanced, or metastatic breast cancer. Among the seven major markets, the US accounted for the largest market share in HR+/HER2− breast cancer, generating USD 7.5 billion in revenue in 2023. The market is expected to experience substantial growth from 2025 to 2034, driven by the introduction of novel therapeutic options. Discover more about the breast cancer market in detail @ Metastatic HR+/HER2- Breast Cancer Market Report Emerging Competitors of VERZENIO Some of the competing emerging key players in HR+/HER2- breast cancer market are, Merck (KEYTRUDA), Arvinas (ARV-471 (vepdegestrant)), Olema Pharmaceuticals (OP1250 (palazestrant)), Celcuity (Gedatolisib), Roche (Giredestrant (RG6171, GDC-9545); Inavolisib), AstraZeneca and Daiichi Sankyo (Datopotamab Deruxtecan (Dato-DXd)), AstraZeneca (Camizestrant (AZD9833); Capivasertib), Eli Lilly (LY3484356/Imlunestrant), Sermonix Pharmaceuticals (Lasofoxifene), Veru Pharma (Enobosarm), DualityBio/BioNtech (DB-1303), Evgen Pharma (SFX-01), Carrick Therapeutics (Samuraciclib (CT-7001)), EQRx/G1 Therapeutics (Lerociclib), Immutep (Eftilagimod Alpha (LAG-3lg/IMP321)), and others. To know more about the number of competing drugs in development, visit @ VERZENIO Market Positioning Compared to Other Drugs Key Milestones of VERZENIO In 2024, Phase III trials did not meet primary endpoints or were terminated for futility. Negative Phase III CYCLONE-2 results, in which VERZENIO added to abiraterone did not meet the primary endpoint of improved radiographic progression-free survival (rPFS) in men with metastatic castration-resistant prostate cancer (mCRPC). In December 2023, Eli Lilly and Company presented results from the MONARCH 3 clinical trial at the 2023 San Antonio Breast Cancer Symposium (SABCS). Results from MONARCH 3 show a numerical improvement in overall survival (OS) of 13.1 months for women with HR+, HER2- metastatic breast cancer treated with VERZENIO plus an aromatase inhibitor in the intent-to-treat population and 14.9 months for women with visceral disease. In March 2023, the US FDA approved an expanded indication for VERZENIO in combination with endocrine therapy for the adjuvant treatment of adult patients with HR+/HER2−, node-positive, early breast cancer (EBC) at a high risk of recurrence. This expanded adjuvant indication removes the Ki-67 score requirement for patient selection. In February 2022, the CHMP adopted a positive opinion recommending a change to the terms of the marketing authorization for the medicinal product VERZENIO. VERZENIO, in combination with endocrine therapy, is indicated for the adjuvant treatment of adult patients with HR+/HER2− negative, node-positive early breast cancer at high risk of recurrence. In October 2021, the US FDA approved VERZENIO, in combination with endocrine therapy (tamoxifen or an aromatase inhibitor), for the adjuvant treatment of adult patients with HR+/HER2−, node-positive, early breast cancer at high risk of recurrence and a Ki-67 score of ≥20% as determined by an FDA-approved test. Ki-67 is a marker of cellular proliferation. In September 2018, VERZENIO was approved in Europe for treating advanced HR+ breast cancer in women if the cancer has already spread to other parts of the body or is locally advanced. In September 2018, VERZENIO was approved for the treatment of patients with HR+/HER2− unresectable or recurrent breast cancer in combination with fulvestrant or an aromatase inhibitor (AI) in Japan. In February 2018, the US FDA approved VERZENIO in combination with an aromatase inhibitor (AI) as initial endocrine-based therapy for the treatment of postmenopausal women with HR+/HER2− advanced or metastatic breast cancer In September 2017, the US FDA approved VERZENIO in combination with an endocrine therapy to treat adult patients who have HR+/HER2− advanced or metastatic breast cancer that has progressed after taking therapy that alters a patient's hormones (endocrine therapy). In October 2015, the US FDA granted Breakthrough Therapy Designation to abemaciclib for patients with refractory hormone-receptor-positive (HR+) advanced or metastatic breast cancer Discover how VERZENIO is shaping the breast cancer treatment landscape @ VERZENIO Breast Cancer VERZENIO Market Dynamics The oral administration of VERZENIO enhances patient convenience, while its expanded approval for the adjuvant treatment of adult patients with HR+/HER2- early breast cancer highlights its role as a differentiated CDK4/6 inhibitor in reducing the risk of recurrence. The rising prevalence of HR+/HER2- breast cancer is driving market demand for effective treatments like VERZENIO. Additionally, its demonstrated efficacy in combination with endocrine therapy and its ability to penetrate the central nervous system further strengthen its market position. Favorable reimbursement policies and increasing awareness among healthcare providers also contribute to its adoption. However, its adoption may be hindered by regulatory hurdles and potential side effects, including severe or life-threatening lung inflammation and serious liver problems. High treatment costs and access disparities in certain regions could also limit market penetration. Competition from other CDK4/6 inhibitors such as IBRANCE and KISQALI poses a challenge, along with concerns over long-term safety data. Additionally, the Phase III CYCLONE-2 trial failed to meet primary endpoints in mCRPC, which may impact its broader clinical prospects and investor confidence. Dive deeper to get more insight into VERZENIO's strengths & weaknesses relative to competitors @ VERZENIO Market Drug Report Table of Contents Related Reports CDK4/6 Inhibitor Market CDK4/6 Inhibitor Market Insights, Epidemiology, and Market Forecast – 2034 report deliver an in-depth understanding of the disease, historical and forecasted epidemiology, as well as the market trends, market drivers, market barriers, and key CDK4/6 inhibitor companies including Pfizer, Prelude Therapeutics, G1 Therapeutics, Pepper Bio, among others. Metastatic HR+/HER2− Breast Cancer Market Metastatic HR+/HER2− Breast Cancer Market Insights, Epidemiology, and Market Forecast – 2034 report deliver an in-depth understanding of the disease, historical and forecasted epidemiology, as well as the market trends, market drivers, market barriers, and key metastatic HR+/HER2− breast cancer companies including Pfizer, Novartis, Stemline Therapeutics, Olema Pharmaceuticals, Arvinas, Immutep, AstraZeneca, Roche, Genentech, Evexta Bio, EQRx, Sermonix Pharmaceuticals, Celcuity, Veru Pharma, Evgen Pharma, Eli Lilly, Biotheryx, among others. HR+/HER2− Breast Cancer Pipeline HR+/HER2− Breast Cancer Pipeline Insight – 2025 report provides comprehensive insights about the pipeline landscape, pipeline drug profiles, including clinical and non-clinical stage products, and the key HR+/HER2− breast cancer companies, including Regor Therapeuics, Seagen Inc., CytomX Therapeutics, Taizhou EOC Pharma, Chia Tai Tianqing Pharmaceutical Group, AstraZeneca, Daiichi Sankyo, Inc., Tyme, Inc., Seagen Inc., Context Therapeutics, Eisai Inc., Shanghai Hengrui Pharmaceutical Co., Ltd., Jiangsu Simcere Pharmaceutical Co., Kind Pharmaceuticals, Merus N.V., Atossa Therapeutics, Roche, among others. Breast Cancer Market Breast Cancer Market Insights, Epidemiology, and Market Forecast – 2034 report deliver an in-depth understanding of the disease, historical and forecasted epidemiology, as well as the market trends, market drivers, market barriers, and key breast cancer companies, including Veru, Sanofi, Roche, AstraZeneca, Eli Lilly, EQRx, Gilead, Sermonix Pharmaceuticals, Evgen Pharma, Tyme, Genentech, Daiichi Sankyo, among others. About DelveInsight DelveInsight is a leading Business Consultant and Market Research firm focused exclusively on life sciences. It supports pharma companies by providing comprehensive end-to-end solutions to improve their performance. Get hassle-free access to all the healthcare and pharma market research reports through our subscription-based platform PharmDelve . Contact Us Shruti Thakur [email protected] +14699457679 Logo: SOURCE DelveInsight Business Research, LLP WANT YOUR COMPANY'S NEWS FEATURED ON PRNEWSWIRE.COM? 440k+ Newsrooms & Influencers 9k+ Digital Media Outlets 270k+ Journalists Opted In GET STARTED

Phase 3Drug ApprovalClinical ResultBreakthrough TherapyASCO

27 Feb 2025

·www.echemi.com

AstraZeneca's Next-Gen Oral SERD Shows Promising Results in Breast Cancer Trial

On February 26, 2025, AstraZeneca announced positive mid-term results from the Phase III SERENA-6 trial for its oral selective estrogen receptor degrader (SERD) camizestrant. The study demonstrated statistically and clinically significant improvements in progression-free survival (PFS) when combined with CDK4/6 inhibitors such as palbociclib, ribociclib, or abemaciclib. This marks camizestrant as the first and only oral SERD proven to provide first-line treatment benefits when used with approved CDK4/6 inhibitors. The SERENA-6 trial assessed the efficacy and safety of switching to camizestrant in patients with hormone receptor-positive (HR+), HER2-negative advanced breast cancer harboring ESR1 mutations. The study compared the camizestrant combination therapy to the standard care of continuing with aromatase inhibitors like anastrozole or letrozole alongside CDK4/6 inhibitors. While key secondary endpoints such as PFS2 and overall survival (OS) remain immature at this stage, there is a noted trend towards improved PFS2 in the camizestrant group. The trial will continue as planned to further evaluate these critical secondary endpoints. Notably, SERENA-6 is the first global, double-blind Phase III trial utilizing circulating tumor DNA (ctDNA) to guide the detection of endocrine resistance. This innovative approach allows for early identification of endocrine resistance signs and the emergence of ESR1 mutations during routine tumor scans. Upon detection of ESR1 mutations without disease progression, patients transitioned from aromatase inhibitor therapy to camizestrant while maintaining treatment with the same CDK4/6 inhibitor. François-Clément Bidard, a professor of medical oncology at Université Versailles-Saint-Quentin, who is also the principal investigator of the trial, stated, “Patients urgently need new therapies to delay disease progression during first-line endocrine therapy. The SERENA-6 trial shows that transitioning to camizestrant after the emergence of ESR1 mutations can delay disease progression and extend the benefits of first-line treatment, representing a significant step forward for patients and a potential shift in clinical practice.” Susan Galbraith, Executive Vice President of Oncology Research and Development at AstraZeneca, noted that these impressive results indicate camizestrant’s versatility in combination with approved CDK4/6 inhibitors, offering a promising new treatment option for one-third of HR+ HER2-negative advanced breast cancer patients who develop ESR1 mutations while receiving aromatase inhibitors with CDK4/6 inhibitors. This pivotal outcome brings AstraZeneca closer to establishing camizestrant as a new standard of care, aiming to transform treatment paradigms in HR+ breast cancer. Globally, approximately 200,000 HR+ breast cancer patients receive first-line drug treatment, typically involving endocrine therapy targeting estrogen receptor-driven disease, often in conjunction with CDK4/6 inhibitors. However, many advanced patients develop resistance to these treatments. ESR1 mutations are key drivers of this resistance and are widely tested in clinical practice, becoming more prevalent as the disease progresses and associated with poor outcomes. About 30% of endocrine-sensitive HR+ patients experience ESR1 mutations during first-line treatment without disease progression.

Phase 3Clinical Result

26 Feb 2025

·endpts.com

AstraZeneca’s SERD hits primary endpoint in late-stage trial, but first-line potential remains uncertain

AstraZeneca wasn’t expected to have data from the Phase 3 trial of its oral SERD until the second half of this year so the positive interim results that the UK drugmaker detailed on Wednesday may be a step toward its blockbuster ambitions for the drug. The SERENA-6 study is one of several late-stage investigations of camizestrant. It tested the pill in what AstraZeneca calls a first-line setting. However, the trial had a switching design, and further data will likely be necessary before the experimental medicine is accepted for first-line use by regulators and prescribers. The trial combined camizestrant with a CDK4/6 inhibition in ER-positive, HER2-negative breast cancer, and AstraZeneca said it resulted in a “highly statistically significant and clinically meaningful” benefit on the primary endpoint of progression-free survival over standard therapy. The participants started the trial being treated with an aromatase inhibitor on top of a CDK4/6 inhibitor — either Pfizer’s Ibrance, Novartis’ Kisqali or Eli Lilly’s Verzenio. The aromatase inhibitor/CDK inhibitor approach is standard first-line care for ER-positive breast cancer, but around 30% of patients can develop a mutation in the ESR1 gene as a mechanism of resistance to these drugs. ESR1 encodes one of the two main types of estrogen receptor. Patients with ESR1 mutations are the only population in whom SERDs — or selective estrogen receptor degraders — have so far been shown to work. A recent example is Lilly’s imlunestrant, which was revealed in December to show a second-line benefit in mutants, but not those with wild-type ESR1 genes. Patients in AstraZeneca’s SERENA-6 trial were monitored for these mutations with blood tests. If an ESR1 mutation was found before the patient’s disease had progressed, they were switched from the aromatase inhibitor regimen to camizestrant plus one of the CDKs. These patients had better PFS than those who stayed on the initial regimen. Arguably this is not strictly a first-line population since patients had already received aromatase and CDK4/6 blockade. AstraZeneca said data on secondary endpoints, including overall survival and time to second disease progression (PFS2), are not yet mature, though it noted that there was a trend toward improvement in PFS2 with the camizestrant combo. No new safety concerns were seen, according to AstraZeneca, and dropouts were “very low and similar in both arms.” AstraZeneca has suggested camizestrant’s sales could peak at more than $5 billion, Barclays analysts wrote in a Wednesday note. But the analysts themselves forecast peak sales of $3.6 billion, evenly split between the first-line and adjuvant settings. Reaching this goal will likely be dependent on an overall survival benefit emerging from SERENA-6, as well as success in the other three ongoing late-stage trials of the SERD. Data from the CAMBRIA-1 and -2 trials in the adjuvant setting could come later this year or early next year. Perhaps more importantly, the SERENA-4 study is in a clearer first-line setting, having enrolled patients who have not previously received systemic treatment. Those patients will get either camizestrant plus Ibrance or an aromatase inhibitor plus Ibrance. Data are expected in 2026 and could help settle the question of whether camizestrant could have a future as first-line therapy.

Phase 3Clinical Result

100 Deals associated with Palbociclib

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KEGG	Wiki	ATC	Drug Bank
D10372	Palbociclib	L01XE33	DB09073

R&D Status

Approved

10 top approved records.

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Indication	Country/Location	Organization	Date
Breast cancer recurrent	Japan	Pfizer Japan, Inc.	27 Sep 2017
Hormone receptor positive HER2 negative breast cancer	United States	Pfizer Inc.	19 Feb 2016
ER-positive/HER2-negative Breast Cancer	United States	Pfizer Inc.	03 Feb 2015

Developing

10 top R&D records.

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Indication	Highest Phase	Country/Location	Organization	Date
Advanced cancer	Phase 3	United States	Pfizer Inc.	22 Feb 2013
Advanced cancer	Phase 3	Australia	Pfizer Inc.	22 Feb 2013
Advanced cancer	Phase 3	United Kingdom	Pfizer Inc.	22 Feb 2013
Advanced cancer	Phase 3	France	Pfizer Inc.	22 Feb 2013
Advanced cancer	Phase 3	Germany	Pfizer Inc.	22 Feb 2013
Advanced cancer	Phase 3	Spain	Pfizer Inc.	22 Feb 2013
Advanced cancer	Phase 3	Canada	Pfizer Inc.	22 Feb 2013
Advanced cancer	Phase 3	South Korea	Pfizer Inc.	22 Feb 2013
Advanced cancer	Phase 3	Ukraine	Pfizer Inc.	22 Feb 2013
Advanced cancer	Phase 3	Belgium	Pfizer Inc.	22 Feb 2013

Clinical Result

Indication

Phase

Evaluation

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Study	Phase	Population	Analyzed Enrollment	Group	Results	Evaluation	Publication Date


NCT03774472 (CTgov)	Phase 1/2	ER-positive/HER2-negative Breast Cancer \| Metastatic breast cancer	15	HCQ (HCQ at 400 mg)	metxmqjrdi(jvaepafsct) = wyfzfnjcqd wsizsldctx (mbajzgdhfl, akaaxklgbu - iklqvslnth) View more	-	17 Feb 2025
				HCQ (HCQ at 600 mg)	metxmqjrdi(jvaepafsct) = asddheyuzo wsizsldctx (mbajzgdhfl, euluadjdow - cgzykwhrdk) View more
NCT02297438 (PALOMA-4, Pubmed \| Chin Med J (Engl))	Phase 3	ER-positive/HER2-negative Breast Cancer First line ER+ \| HER2−	-	Palbociclib plus Letrozole	ipnirerkwv(ueulziviws): mean change from baseline = 0.97 (95% CI, 0.05 - 1.89), P-Value = 0.038 View more	Positive	19 Dec 2024
				Placebo plus Letrozole
NCT03644186 (TOUCH, CTgov)	Phase 2	ER-positive/HER2-positive Breast Cancer \| HER2 Positive Breast Cancer \| Hormone receptor positive HER2 positive breast cancer	147	Trastuzumab+Paclitaxel+pertuzumab (Paclitaxel Plus Trastuzumab and Pertuzumab)	(jwsscobplq) = gcjpdbmukl oekrciwgic (npsrkqwbqr, wccnejfkoo - fxqnrmffdm) View more	-	13 Dec 2024
				Trastuzumab+Letrozole+palbociclib+pertuzumab (Palbociclib Plus Letrozole Plus Trastuzumab and Pertuzumab)	(jwsscobplq) = jwujmejgex oekrciwgic (npsrkqwbqr, khdmroxxyv - cnwfatjbxp) View more
NCT02947685 (PATINA, Company_Website) Manual	Phase 3	Hormone receptor positive HER2 positive breast cancer First line \|	518	IBRANCE + anti-HER2 therapy + endocrine therapy	(nyvetrgbge) = xiofowkkgq nwcojowgpu (zmpoxzqafl, 32.4 - 60.9) View more	Positive	12 Dec 2024
				Anti-HER2 therapy + endocrine therapy	(nyvetrgbge) = ujmwdwsoei nwcojowgpu (zmpoxzqafl, 23.3 - 38.6) View more
NCT06390839 (CTgov)	Phase 2	Refractory Malignant Solid Neoplasm \| Advanced Malignant Solid Neoplasm \| Advanced Lymphoma \| Refractory Lymphoma	43	Computed Tomography+palbociclib	(mqnodirvtx) = jivtvapwae zivriygnfu (kmnsbrfula, ymuqbgcsia - oobpsfwdbn) View more	-	10 Dec 2024
NCT02491983 (PARSIFAL, CTgov)	Phase 2	Metastatic HER2-Negative Breast Carcinoma \| ER-positive/HER2-negative Breast Cancer \| Metastatic breast cancer	486	Letrozole+palbociclib (Arm A)	yrwxueezbg(fxdsvsvewb) = vmpwoevspa gkimxhrplg (qavoncknwh, grloxrivmj - tzgzkgvmlr) View more	-	09 Dec 2024
				Fulvestrant+palbociclib (Arm B)	yrwxueezbg(fxdsvsvewb) = buydqhbwjr gkimxhrplg (qavoncknwh, ecacwafwjv - zluynglzol) View more
ESMO_ASIA2024 Manual	Not Applicable	Hormone receptor positive HER2 negative breast cancer First line \|	377	Palbociclib	(gbwxzhqhnd) = quarlfwifj cznnonhivs (vtlhmvvhtn ) View more	Similar	07 Dec 2024
				Ribociclib	(gbwxzhqhnd) = aszvulssdf cznnonhivs (vtlhmvvhtn ) View more
NCT05361655 (Pubmed \| Oncologist)	Not Applicable	Cardiovascular Diseases \| Metastatic breast cancer First line HR+ \| HER2−	469	Palbociclib plus aromatase inhibitor	(sehmgkkqsb) = vtvudipylr bazpoydaqx (pxqhtfbcgl ) View more	Positive	06 Dec 2024
				Aromatase inhibitor alone	(sehmgkkqsb) = nisbyapuih bazpoydaqx (pxqhtfbcgl ) View more
NCT04130152 (Pubmed \| NPJ Breast Cancer)	Early Phase 1	Hormone receptor positive HER2 negative breast cancer	-	Palbociclib plus Letrozole	pmjgovzgew(ablrksafno) = hibbswussz sagosdfruc (rvghcehgvc ) View more	-	26 Nov 2024
NCT04191499 (INAVO120, Pubmed \| N Engl J Med \| NEWS) Manual	Phase 3	PIK3CA mutation/HR-positive/HER2-negative Breast Cancer First line \| \|	325	Inavolisib plus palbociclib-fulvestrant	(nqdsoocopw) = gurrpposwp kyokmdqsxp (qrmccxmptl, 11.3 - 20.5) View more	Positive	31 Oct 2024
				Placebo plus palbociclib-fulvestrant	(nqdsoocopw) = bmajpbggxk kyokmdqsxp (qrmccxmptl, 5.6 - 9.3) View more

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