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A Study of Abemaciclib (LY2835219) With Abiraterone in Men With Prostate Cancer That Has Spread to Other Parts of the Body and is Expected to Respond to Hormonal Treatment (Metastatic Hormone-Sensitive Prostate Cancer)

CYCLONE 3: A Phase 3, Randomized, Double-Blind, Placebo-Controlled Study of Abemaciclib in Combination With Abiraterone Plus Prednisone in Men With High-Risk Metastatic Hormone-Sensitive Prostate Cancer - I3Y-MC-JPEG

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT2031220101
Enrollment
900
Registered
2022-05-31
Start date
2022-06-01
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Prostatic Neoplasms

Interventions

-Drug: Abemaciclib Administered orally. Other Name: LY2835219 -Drug: Abiraterone Administered orally. -Drug: Prednisone or Prednisolone Administered orally. -Drug: Placebo for Abemacic

Sponsors

Masaki Takeshi
Lead Sponsor

Eligibility

Sex/Gender
Male

Inclusion criteria

Inclusion criteria: -Adenocarcinoma of the prostate. -High-risk metastatic disease defined as: -Greater than or equal to (>=)4 bone metastases and/or ->=1 visceral metastases -Androgen deprivation therapy (either medical with a luteinizing hormone-releasing hormone [LHRH] analogue or surgical castration) must have been started prior to randomization and continued throughout the study. -Adequate organ function -Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1

Exclusion criteria

Exclusion criteria: -Prior treatment with abemaciclib or any other cyclin dependent kinase 4 and 6 (CDK4 & 6) inhibitor -Development of metastatic prostate cancer in the context of castrate levels of testosterone (<=50 ng/dL) -Received any prior systemic therapy for metastatic prostate cancer (including investigational agents), the following exceptions are permitted: -Up to 3 months of androgen deprivation therapy (ADT) (when given without docetaxel) AND absence of radiographic or prostate specific antigen (PSA) progression prior to randomization -Up to 6 cycles of docetaxel with ADT AND absence of radiographic or PSA progression prior to randomization -Clinically significant cardiovascular disease as evidenced by myocardial infarction, arterial thrombotic events, or severe/unstable angina in the past 6 months, or New York Heart Association Class II to IV heart failure -History of syncope of cardiovascular etiology, ventricular arrhythmia of pathological origin, or sudden cardiac arrest. Chronic and hemodynamically stable atrial arrhythmia well-controlled on medical therapy is permitted -Uncontrolled hypertension -Clinically active or chronic liver disease, moderate/severe hepatic impairment -Known untreated central nervous system (CNS) metastasis. Patients with a history of treated brain metastases are eligible provided that disease is stable following treatment for at least 8 weeks prior to randomization and no requirement for corticosteroid use

Design outcomes

Primary

MeasureTime frame
Radiographic Progression-Free Survival (rPFS) Assessed by Investigator [ Time Frame: Randomization to radiographic progression or death from any cause (approximately 48 months) ] rPFS Assessed by Investigator

Countries

Argentina, Australia, Belgium, Brazil, Canada, China, Czechia, Denmark, France, Germany, Greece, Hungary, Israel, Italy, Japan, Korea, Republic of, Mexico, Netherlands, Poland, Romania, Russian Federation, Spain, Taiwan, Turkey, United Kingdom, United States

Contacts

Public ContactTrial Guide Call Center

Eli Lilly Japan K.K.

LTG_CallCenter@lists.lilly.com+81-120-023-812

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026