Not medical advice. This website is not medical advice, a diagnosis, a match to a trial, or a recommendation to join a study. Listings are plain-English rewrites of public ClinicalTrials.gov records. Whether a site is still enrolling, and whether you qualify, can only be confirmed by the study team and your clinician. Source registry: ClinicalTrials.gov. Editorial rules: methodology.

Ibrance · ClinicalTrials.gov · reviewed 2026-08-17

Palbociclib clinical trials, in English

Palbociclib (Ibrance) records are typically HR-positive, HER2-negative breast cancer studies, sometimes with new combinations. Receptor status must match the protocol. Search the same name on ClinicalTrials.gov.

Also tagged in this snapshot for: Metastatic Malignant Neoplasm to Brain · Recurrent Brain Metastases · Progressive Brain Metastases · Metastatic Breast Cancer · Tumor, Solid · Pancreatic Cancer · Melanoma · Locally Advanced or Metastatic ER+ HER2- Breast Cancer · Locally Advanced or Metastatic Castration-resistant Prostate Cancer · Locally Advanced or Metastatic Non-small Cell Lung Cancer · ER Positive Breast Cancer · HER2-negative Breast Cancer

RecruitingPhase 2Boston, Massachusetts
Phase 2: testing Palbociclib for Metastatic Malignant Neoplasm to Brain

This research study is studying This research study is studying the how well it works and safety of the following study drugs as a possible treatment for recurrent central nervous system (CNS) metastases: * Palbociclib alone (Cohort 1) * The combination of palbociclib and pembrolizumab (Cohort 2) Pfizer and Merck, pharmaceutical companies, are supporting this research study by providing the study drugs as well as funding for research activities.

NCT02896335 · Official ClinicalTrials.gov record · Massachusetts General Hospital

RecruitingNot a traditional drug phasePrato, Tuscany
Not a traditional drug phase: Thymidine kinase activity for Metastatic Breast Cancer

This is a multi-center biomarkers study aiming to prospectively collect biological samples from patients with ER+ and HER2-negative metastatic breast cancer, who are candidate to first-line treatment with an aromatase inhibitor and a CDK4/6 inhibitor as per standard clinical practice. Blood and tissue samples will be collected for biomarker analysis, including thymidine kinase1 activity, gene expression signatures and circulating tumor DNA.

NCT04660435 · Official ClinicalTrials.gov record · Fondazione Sandro Pitigliani

RecruitingPhase 1Houston, Texas
Phase 1: testing Axitinib for Advanced Malignant Solid Neoplasm

This phase Ib trial is to find out the best dose, possible benefits and/or side effects of talazoparib when given in combination with palbociclib, axitinib, or crizotinib in treating patients with solid tumors that has spread to nearby tissue or lymph nodes (locally advanced) or other places in the body (metastatic). PARPs are proteins that help repair damaged DNA, the genetic material that serves as the body's instruction book.

NCT04693468 · Official ClinicalTrials.gov record · M.D. Anderson Cancer Center

RecruitingPhase 1 / Phase 2Duarte, California
Phase 1 / Phase 2: testing Giredestrant for Inoperable, Locally Advanced or Metastatic, ER-positive Breast Cancer

This is a Phase Ib/II, open-label, multicenter, randomly assigned umbrella study in participants with breast cancer. The study is designed with the flexibility to open new treatment arms as new treatments become available, close existing treatment arms that demonstrate minimal clinical activity or unacceptable toxicity, or modify the patient population.

NCT04802759 · Official ClinicalTrials.gov record · Hoffmann-La Roche

RecruitingPhase 3Worthington, Minnesota
Phase 3: testing Palbociclib for HPV-unrelated Head and Neck Squamous Cell Carcinoma

This multicenter, open-label, randomly assigned phase 3 trial will determine if palbociclib and cetuximab (Arm 1) improves overall survival (OS) in comparison to cetuximab this drug alone (Arm 2) in patients with CDKN2A-altered, HPV-unrelated recurrent or metastatic head and neck squamous cell carcinoma (HNSCC) who experienced disease progression on a PD-1/L1 inhibitor (given as this drug alone or in combination with other therapy).

NCT04966481 · Official ClinicalTrials.gov record · Washington University School of Medicine

RecruitingPhase 2Birmingham, Alabama
Phase 2: testing Alpelisib for Advanced Malignant Solid Neoplasm

This ComboMATCH patient screening trial is the gateway to a coordinated set of clinical trials to study cancer treatment directed by genetic testing. Patients with solid tumors that have spread to nearby tissue or lymph nodes (locally advanced) or have spread to other places in the body (advanced) and have progressed on at least one line of standard systemic therapy or have no standard treatment that has been shown to prolong overall survival may be candidates for these trials.

NCT05564377 · Official ClinicalTrials.gov record · National Cancer Institute (NCI)

RecruitingPhase 3Scottsdale, Arizona
Phase 3: testing Lasofoxifene in combination with abemaciclib for Metastatic Breast Cancer

The goal of this clinical trial is to assess the how well it works, whether it is safe and how hard side effects are to live with of the combination of lasofoxifene and abemaciclib compared to fulvestrant and abemaciclib for the treatment of pre- and postmenopausal women and men who have previously received ribociclib or palbociclib-based treatment and have locally advanced or metastatic estrogen receptor positive (ER+)/human epidermal growth factor 2 negative (HER2-) breast cancer with an estrogen receptor 1 (ESR1) mutation. The main question the study aims to answer is: • To compare the how well it works of the combination of lasofoxifene and abemaciclib with that of fulvestrant and abemaciclib Participants will receive either receive 5 mg/d of oral lasofoxifene plus oral abemaciclib 150 mg twice a day or the combination of fulvestrant 500 mg intramuscular (IM) on Days 1, 15, and 29 and then once monthly thereafter plus oral abemaciclib 150 mg twice a day.

NCT05696626 · Official ClinicalTrials.gov record · LeonaBio

RecruitingPhase 1 / Phase 2Los Angeles, California
Phase 1 / Phase 2: testing STX-478 for Breast Cancer

Study STX-478-101 (LY4064809) is a multipart, open-label, phase 1/2 study evaluating the safety, tolerability, pharmacokinetics (PK), and preliminary antitumor activity of STX-478 (LY4064809) in participants with advanced solid tumors with P13Ka mutations. Part 1 will evaluate STX-478 as this drug alone in participants with advanced solid tumors.

NCT05768139 · Official ClinicalTrials.gov record · Eli Lilly and Company

RecruitingPhase 3Chandler, Arizona
Phase 3: testing Palbociclib 125mg for Metastatic Breast Cancer

This study wants to generate evidence on an alternative dosing strategy for CDK4/6 inhibitors to help more patients with Metastatic Breast Cancer (MBC) (age ≥ 60 years) tolerate side effects and stay on treatment longer, to derive the most clinical benefit from these drugs. The primary objective of the CDK Study is to compare time to treatment discontinuation (TTD) on the approved dosing for palbociclib (125 mg orally daily on days 1-21 of 28-day cycle) or ribociclib (600 mg orally daily on days 1-21 of 28-day cycle) vs.

NCT06377852 · Official ClinicalTrials.gov record · American Society of Clinical Oncology

RecruitingPhase 1 / Phase 2Basking Ridge, New Jersey
Phase 1 / Phase 2: testing Mirdametinib for Well Differentiated Liposarcoma

This study wants to find out whether mirdametinib in combination with palbociclib is an effective and safe treatment for people with metastatic, recurrent, and unresectable liposarcoma. This study will test different doses of mirdametinib in combination with a fixed dose of palbociclib to find the best safe dose for further testing.

NCT06843967 · Official ClinicalTrials.gov record · Memorial Sloan Kettering Cancer Center

RecruitingEarly phase 1Roma, ROMA
Early phase 1: testing CDK4/6 Inhibitor (Palbociclib, Ribociclib, Abemaciclib) for Medulloblastoma, Childhood

Medulloblastoma (MB), a rare yet critical pediatric brain tumor, is divided into 4 molecular subgroups (WNT, SHH, Group 3, Group 4), each with distinct genetic profiles. Despite diagnostic and therapeutic advances, neurotoxicity from standard treatments (resection, radiotherapy, chemotherapy) and the need for long-term care remain challenges.

NCT06959979 · Official ClinicalTrials.gov record · Fondazione Policlinico Universitario Agostino Gemelli IRCCS

RecruitingPhase 2Boston, Massachusetts
Phase 2: testing Sasanlimab for Metastatic Renal Cell Carcinoma

The goal of this research study is to evaluate how well and safely the study drugs sasanlimab, palbociclib, and axitinib work for treatment of participants with advanced clear cell renal cell carcinoma (ccRCC) or translocation renal cell carcinoma (tRCC). The name of the study drugs involved in this research study is: * Sasanlimab (a type of monoclonal antibody) * Palbociclib (a type of kinase inhibitor) * Axitinib (a type of Vascular endothelial growth factor inhibitor)

NCT07123090 · Official ClinicalTrials.gov record · Stephanie Berg

RecruitingPhase 3Anchorage, Alaska
Phase 3: testing LY4064809 for Breast Neoplasms

The purpose of the study is to assess the how well it works and safety of the addition of Tersolisib (LY4064809/STX-478) to other anti-cancer drugs as first treatment for advanced hormone receptor-positive (HR+)/human epidermal growth factor receptor 2-negative (HER2-) breast cancer. Participants can remain in the study as long as the drug is helping the cancer without unbearable side effects.

NCT07174336 · Official ClinicalTrials.gov record · Eli Lilly and Company

RecruitingNot a traditional drug phaseXiamen, Fujian
Not a traditional drug phase: testing Inavolisib for Locally Advanced Breast Cancer

The main purpose of this study is to measure the effectiveness of inavolisib based regimen in participants with endocrine-resistant, phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha gene (PIK3CA)-mutated, hormone receptor-positive (HR+), human epidermal growth factor receptor 2-negative (HER2-) locally advanced or metastatic breast cancer (LA/mBC), following on or after completing adjuvant endocrine therapy in routine clinical practice in China.

NCT07347600 · Official ClinicalTrials.gov record · Hoffmann-La Roche

RecruitingPhase 3Birmingham, Alabama
Phase 3: testing BGB-43395 for HR+/HER2- Breast Cancer

This study wants to investigate the how well it works and safety of BGB-43395 in combination with letrozole compared with investigator's choice of cyclin-dependent kinase 4/6 inhibitor (CDK4/6i) in combination with letrozole in patients with advanced or metastatic hormone receptor positive (HR+)/human epidermal growth factor receptor 2 negative (HER2-) breast cancer (BC) who have not received prior systemic treatment for advanced or metastatic disease.

NCT07492641 · Official ClinicalTrials.gov record · BeOne Medicines

RecruitingPhase 3Columbia, Maryland
Phase 3: testing Trastuzumab deruxtecan for Advanced Breast Cancer

This study will evaluate a structured sequential treatment strategy starting with T-DXd + pertuzumab upfront therapy, followed by an optimized maintenance therapy with dual HER2+blockade + CDK4/6i + ET and the opportunity to retreat with T-DXd once patients progress under maintenance aimed to maximizing disease control, optimizing tolerability, and preserving T-DXd as a future therapeutic option, while ensuring participant safety and regulatory compliance in participants with HER2+/HR+ advanced/metastatic breast cancer.

NCT07683754 · Official ClinicalTrials.gov record · Daiichi Sankyo

FAQ: Palbociclib studies

Are there recruiting Palbociclib clinical trials?

This snapshot currently includes 29 recruiting records that name Palbociclib (or an alias) as an intervention. Also searched as Ibrance. Confirm the intervention list on ClinicalTrials.gov; names can appear in combination studies.

Does a Palbociclib listing mean the drug is approved for that use?

No. ClinicalTrials.gov lists research studies. An NCT number is not prescribing information and is not an FDA approval for you.

Is PlainTrials affiliated with the maker of Palbociclib?

No. Brand and generic names are copied from public registry intervention fields so you can find the matching NCT record.

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