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A Phase III Double-Blind, Randomised, Placebo-Controlled Study Assessing the Efficacy and Safety of Capivasertib + Docetaxel Versus Placebo + Docetaxel as Treatment for Patients With Metastatic Castration Resistant Prostate Cancer (mCRPC)

This study will assess the efficacy and safety of capivasertib plus docetaxel versus placebo plus docetaxel in participants with metastatic castration resistant prostate cancer (mCRPC), all participants will receive the docetaxel with steroid therapy and receive androgen deprivation therapy. The intention of the study is to demonstrate that the combination of capivasertib plus docetaxel is superior to placebo plus docetaxel with respect to the overall survival of study participants, when overall survival is defined as the time from randomization until the date of death due to any cause. - CAPItello-280

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT2031220214
Enrollment
80
Registered
2022-07-14
Start date
2022-07-15
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

Metastatic Castration Resistant Prostate Cancer

Interventions

Capivasertib: 320 mg (2 tablets) BD given on an intermittent weekly dosing schedule. Patients will be dosed on Days 2 to 5, 9 to 12, and 16 to 19 in each week of a 21-day treatment cycle. Number of Cy

Sponsors

Hibi Kazushige
Lead Sponsor

Eligibility

Sex/Gender
Male

Inclusion criteria

Inclusion criteria: - Histologically-confirmed prostate adenocarcinoma without neuroendocrine or small cell cancers - Metastatic disease documented prior to randomisation by clear evidence of 1 bone lesion or more (defined as 1 lesion with positive uptake on bone scan) and/or 1 soft tissue lesion or more (measurable or non-measurable) - Patient must have been previously treated with a next generation hormonal agent (NHA), ie, abiraterone, enzalutamide, apalutamide or darolutamide, for prostate cancer for at least 3 months and shown evidence of disease progression (radiological or via PSA assessment) while receiving the NHA - Evidence of mCRPC with progression of disease despite androgen deprivation therapy (ADT) and after anti-androgen withdrawal if applicable - Serum testosterone level 50 ng/dL or less - Candidate for docetaxel and steroid therapy - Ongoing ADT with LHRH agonist, LHRH antagonist, or bilateral orchiectomy - Eastern Cooperative Oncology Group (ECOG)/World Health Organisation (WHO) performance status 0 to 1 and anticipated minimum life expectancy of 12 weeks - Confirmation that archival formalin-fixed paraffin-embedded (FFPE) tumour tissue sample which meets the minimum pathology and sample requirements is available to send to the central laboratory - Able and willing to swallow and retain oral medication - Agreement to remain abstinent (refrain from heterosexual intercourse) or use contraceptive measures, and agreement to refrain from donating sperm

Exclusion criteria

Exclusion criteria: - Radiotherapy with a wide field of radiation within 4 weeks before start of study treatment - Major surgery (excl. placement of vascular access, transurethral resection of prostate, bilateral orchiectomy, internal stents) within 4 weeks of start of study treatment - Brain metastases,or spinal cord compression (unless spinal cord compression is asymptomatic, treated and stable and not requiring steroids for at least 4 weeks prior to start of study treatment) - Any of the following cardiac criteria: i. Mean resting corrected QT interval (QTc) >470 msec from 3 consecutive ECGs ii. Any clinically important abnormalities in rhythm, conduction or morphology of resting ECG iii. Any factors that increase the risk of QTc prolongation or risk of arrhythmic events such as heart failure, hypokalaemia, potential for torsades de pointes, congenital long QT syndrome, family history of long QT syndrome or unexplained sudden death under 40 years of age,or any concomitant medication known to prolong the QT interval iv. Experience of any of the following procedures or conditions in the preceding 6months: coronary artery bypass graft, vascular stent, myocardial infarction, unstable angina pectoris, congestive heart failure NYHA Grade 2 or less. v. Uncontrolled hypotension - systolic blood pressure 2.5x upper limit of normal (ULN) if no demonstrable liver metastases or > 5x ULN in the presence of liver metastases. Elevated alkaline phosphatase (ALP) is not exclusionary if due to the presence of bone metastases and liver function is otherwise considered adequate in the investigator's judgement v. Total bilirubin > 1.5x ULN (participants with confirmed Gilbert's syndrome may be included in the study with a higher value) vi. Creatinine clearance < 50 mL/min per the Cockcroft and Gault formula without the need for chronic dialysis; - As judged by the investigator, any evidence of diseases (such as severe or uncontrolled systemic diseases, including uncontrolled hypertension, renal transplant and active bleeding diseases), which, in the investigator's opinion, makes it undesirable for the patient to participate in the study or that would jeopardise compliance with the protocol. - Refractory nausea and vomiting, malabsorption syndrome, chronic gastrointestinal diseases, inability to swallow the formulated product or previous significant bowel resection, or other condition that would preclude adequate absorption of capivasertib - Any other disease, physical examination finding, or clinical laboratory finding that, in the investigator's opinion, gives reasonable suspicion of a disease or condition that contra-indicates the use of an investigation

Design outcomes

Primary

MeasureTime frame
Overall Survival (OS) [ Time Frame: up to approximately 52 months ] Overall survival is defined as time from randomisation until the date of death due to any cause.

Countries

Australia, Belgium, Brazil, Canada, Chile, China, Czech Republic, France, Greece, Hungary, India, Japan, Mexico, Netherland, Poland, South Korea, Spain, Taiwan, United Kingdom, United States

Contacts

Public ContactKazushige Hibi

Astrazeneka K.K

RD-clinical-information-Japan@astrazeneca.com+81-6-4802-3533

Outcome results

None listed

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