Trial purpose
Cancer treatment
Tumor type
Breast
Age
18+
Clinical summary
Summary
This study has two phases: Dose Escalation and Dose Expansion.
In the Dose Escalation phase (Phase 1a), sequential cohorts of increasing dose levels of the investigational targeted therapy (called BGB-43395) will be evaluated as monotherapy or in combination with hormone therapy (either fulvestrant or letrozole).
In the Dose Expansion phase (Phase 1b) the recommended dose for expansion (RDFE) for BGB-43395 (in combination with fulvestrant) from Phase 1a will be evaluated in HR+ breast cancer and selected tumour cohorts.
Conditions
This trial is treating people with advanced, metastatic or inoperable solid cancers associated with dependency on CDK4, including HR+ breast cancer, non-small cell lung cancer and anothers
Eligibility
Inclusion
- Phase 1a (Dose Escalation): Participants with histologically or cytologically confirmed advanced, metastatic, or unresectable solid tumors associated with dependency on CDK4, including HR+ breast cancer, ovarian cancer, endometrial cancer, non-small cell lung cancer, and others. For combination with elacestrant, participants must have received at least 1 prior line of treatment for advanced/metastatic disease including prior endocrine therapy and CDK4/6 inhibitor in either the adjuvant or advanced/metastatic setting.
- Phase 1a Safety Expansion: For combination with fulvestrant in regions where approved and available, participants with HR+ breast cancer must have received at least 1 prior line of treatment including endocrine therapy and a CDK4/6 inhibitor. For combination with letrozole, participants must be CDK4/6 inhibitor treatment naïve and have not received any previous systemic treatment for advanced disease.
- Phase 1b: Participants with HR+/HER2- breast cancer.
- Phase 1b: For combination with fulvestrant, participants with HR+/HER2- breast cancer enrolled in regions where CDK4/6 inhibitors are approved and available must have received 1-2 lines of therapy for advanced/metastatic disease including endocrine therapy and a CDK4/6 inhibitor. Participants can have received up to 2 lines of prior cytotoxic chemotherapy for advanced disease. Prior cytotoxic treatment is prohibited. For combination cohorts with letrozole, participants must be CDK4/6 inhibitor treatment naïve and have not received any previous systemic treatment for advanced disease.
- Stable Eastern Cooperative Oncology Group (ECOG) Performance Status ≤ 1.
- Female participants with metastatic HR+/HER2- breast cancer must be postmenopausal or receiving ovarian function suppression treatment.
- Adequate organ function without symptomatic visceral disease.
Exclusion
- Known leptomeningeal disease or uncontrolled, untreated brain metastases.
- Any malignancy ≤ 3 years before the first dose of study treatment(s) except for the specific cancer under investigation in this study and any locally recurring cancer that has been treated with curative intent (eg, resected basal or squamous cell skin cancer, superficial bladder cancer, or carcinoma in situ of the cervix or breast).
- Uncontrolled diabetes.
- Infection requiring systemic antibacterial, antifungal, or antiviral therapy ≤ 28 days before the first dose of study drug(s), or symptomatic COVID-19 infection.
- Participants with untreated chronic hepatitis B or chronic hepatitis B virus (HBV) carriers with HBV DNA ≥ 500 IU/mL (or ≥ 2500 copies/mL) at screening.
- Participants with active hepatitis C infection.
- Prior allogeneic stem cell transplantation, or organ transplantation.
Note: Other protocol defined Inclusion/Exclusion criteria may apply.
Inclusion
- Your cancer has spread to other parts of the body (metastatic) or has grown into nearby parts of the body (locally advanced).
- Your cancer has not spread to other parts of the body, but it is not possible to perform surgery to remove it (unresectable).
- You have had treatment but your cancer has gotten worse or has not responded to the treatment you have been given.
Exclusion
- You have been diagnosed with a prior or secondary type of cancer.
- You have certain types of non-cancer medical conditions.
- You have had certain treatments, surgical procedures or drugs.
Clinical trials have complex eligibility criteria, and other criteria may apply for this trial. Ask your doctor about whether this trial could be right for you.
More information
Trial Identifiers
Information on this page is partially produced from ClinicalTrials.gov, EU Clinical Trials Register *. View further details about this trial on the registry via the links below:
Trial sponsor
BeiGene
Scientific Title
A Phase 1a/1b Study Investigating the Safety, Tolerability, Pharmacokinetics, Pharmacodynamics, and Preliminary Antitumor Activity of the CDK4 Inhibitor BGB-43395, Alone or as Part of Combination Therapies in Patients With Metastatic HR+/HER2- Breast Cancer and Other Advanced Solid Tumors
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