Study of AZD0516 as Monotherapy and in Combination in Participants With Metastatic Prostate Cancer
SEACLIFF
A Modular Phase I/IIa, Open-label, Multi-centre Study to Assess the Safety, Tolerability, Pharmacokinetics, and Preliminary Efficacy of AZD0516 as Monotherapy and in Combination With Anti-cancer Agents in Participants With Metastatic Prostate Cancer
2 other identifiers
interventional
177
10 countries
51
Brief Summary
The main purpose of this study is to assess the safety and tolerability of AZD0516 as monotherapy and/or in combination with other anti-cancer agents for treatment of metastatic prostate cancer.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for phase_1
Started Oct 2025
Typical duration for phase_1
51 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
September 12, 2025
CompletedFirst Posted
Study publicly available on registry
September 18, 2025
CompletedStudy Start
First participant enrolled
October 1, 2025
CompletedPrimary Completion
Last participant's last visit for primary outcome
January 18, 2029
ExpectedStudy Completion
Last participant's last visit for all outcomes
January 18, 2029
April 8, 2026
April 1, 2026
3.3 years
September 12, 2025
April 7, 2026
Conditions
Keywords
Outcome Measures
Primary Outcomes (3)
Module 1 and 2: Parts A and B: Number of participants with Adverse Events (AEs), Serious Adverse Events (SAEs) and Adverse Event of Special Interests (AESIs)
Part A: To assess the safety and tolerability and to determine the Maximum Tolerated Dose (MTD) and/or Recommended Dose for Expansion (RDE) of AZD0516 as monotherapy and in combination with anti-cancer agents. Part B: To assess the safety and tolerability of AZD0516 as monotherapy and in combination with anti-cancer agents.
From Day 1 up to approximately 3 years
Module 1 and 2: Part A: Number of participants with Dose Limiting Toxicities (DLTs)
To assess the safety and tolerability of AZD0516 as monotherapy and in combination with anti-cancer agents.
From Day 1 up to end of DLT period (approximately 21 days)
Module 1: Parts B and C and Module 2: Part B: Percentage of participants with Prostate-Specific Antigen (PSA) 50 response rate
The PSA50 response rate is defined as the percentage of participants achieving ≥ 50% decrease in PSA from baseline to the lowest post-baseline PSA result.
Up to approximately 2 years
Secondary Outcomes (31)
Module 1 and 2: Part A: Percentage of participants with PSA50 response rate
Up to approximately 2 years
Module 1 and 2: Parts A, B and C: Percentage of participants with PSA90 response rate
Up to approximately 2 years
Module 1 and 2: Parts A, B and C: Time to PSA 50 response (TTPSA50)
Up to approximately 2 years
Module 1 and 2: Parts A, B and C: Time to PSA response (TTPSA90)
Up to approximately 2 years
Module 1 and 2: Parts A, B and C: Duration of PSA response 50 (DoPSA50)
Up to approximately 2 years
- +26 more secondary outcomes
Study Arms (2)
Arm 1: AZD0516 monotherapy
EXPERIMENTALParticipants with mCRPC will receive AZD0516 monotherapy.
Arm 2: AZD0516 + AZD9574
EXPERIMENTALParticipants with mCRPC will receive AZD0516 in combination with AZD9574.
Interventions
Eligibility Criteria
You may qualify if:
- Histologically or cytologically confirmed diagnosis of metastatic adenocarcinoma of the prostate. Focal high grade neuroendocrine features are permitted.
- Measurable PSA ≥ 1 μg/L (≥ 1 ng/mL).
- Surgically or medically castrated with serum testosterone levels ≤ 50 ng/dL (≤ 1.75 nmol/L) within ≤ 28 days before treatment allocation. Ongoing androgen deprivation therapy (ADT) with a gonadotropin releasing hormone (GnRH) modulator for participants who have not undergone bilateral orchiectomy must be initiated at least 2 weeks prior to consent and must continue throughout the study.
- Eastern cooperative oncology group (ECOG) performance status of 0 or 1.
- Adequate organ and marrow function in the absence of blood transfusion or growth factor support (within 21 days prior to the scheduled first dose of study intervention).
- Provision of baseline archival or newly obtained formalin-fixed paraffin-embedded (FFPE) tumour sample is mandatory.
- Documented current evidence of metastatic prostate cancer
- Life expectancy of at least 12 weeks in the opinion of the investigator
- Documented mCRPC progression at screening as assessed by the investigator with at least one of the following criteria:
- PSA progression defined by a minimum of 3 rising PSA levels with an interval of ≥ 1 week between each determination. The PSA value at the screening visit should be ≥ 1 μg/L (1 ng/mL).
- Radiographic disease progression in soft tissue based on response evaluation criteria in solid tumors (RECIST) v1.1 criteria with or without PSA progression as per prostate cancer working group 3 (PCWG3).
- Radiographic disease progression in bone defined as the appearance of 2 or more new bone lesions on a bone scan as per PCWG3 with or without PSA progression.
You may not qualify if:
- Cancer related spinal cord compression, or brain metastases unless asymptomatic, treated and stable and not requiring continuous corticosteroids at a dose of \> 10 mg prednisone/day or equivalent for at least 4 weeks prior to study enrolment.
- History of leptomeningeal carcinomatosis.
- Unresolved toxicities of Grade ≥ 2 (National Cancer Institute Common Terminology Criteria for Adverse Events v5.0) from prior therapy (excluding vitiligo, alopecia, and endocrine disorders that are controlled with replacement hormone therapy).
- Uncontrolled intercurrent illness within the last 12 months.
- Cardiovascular disorder (History of arrhythmia, uncontrolled hypertension, symptomatic hypotension, history of brain perfusion problems, symptomatic heart failure, prior or current cardiomyopathy, severe valvular heart disease)
- History of malignancy
- History of non-infectious interstitial lung disease (ILD)/pneumonitis
- Any known predisposition to bleeding
- Clinically severe pulmonary compromise
- Participants with Myelodysplastic syndrome (MDS)/Acute Myeloid Leukemia (AML) or with features suggestive of MDS/AML.
- Previous treatment with a STEAP2 targeting modality, chemotherapeutic agent that inhibits topoisomerase activity or metabolic enzymes.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- AstraZenecalead
- Parexelcollaborator
Study Sites (51)
Research Site
Fayetteville, Arkansas, 72703, United States
Research Site
Los Angeles, California, 90095, United States
Research Site
Boston, Massachusetts, 02114, United States
Research Site
Ann Arbor, Michigan, 48109, United States
Research Site
Detroit, Michigan, 48201, United States
Research Site
Buffalo, New York, 14263, United States
Research Site
New York, New York, 10065, United States
Research Site
Providence, Rhode Island, 02906, United States
Research Site
Myrtle Beach, South Carolina, 29572, United States
Research Site
Houston, Texas, 77030, United States
Research Site
Barretos, 14784-400, Brazil
Research Site
Porto Alegre, 90035-001, Brazil
Research Site
São Paulo, 01401-002, Brazil
Research Site
Changsha, 410013, China
Research Site
Chengdu, 610041, China
Research Site
Wuhan, 430022, China
Research Site
Lyon, 69008, France
Research Site
Montpellier, 34298, France
Research Site
Saint-Herblain, 44805, France
Research Site
Suresnes, 92151, France
Research Site
Villejuif, 94805, France
Research Site
Milan, 20132, Italy
Research Site
Milan, 20133, Italy
Research Site
Milan, 20141, Italy
Research Site
Naples, 80131, Italy
Research Site
Roma, 00168, Italy
Research Site
Rozzano, 20089, Italy
Research Site
Chūōku, 104-0045, Japan
Research Site
Kashiwa, 277-8577, Japan
Research Site
Kōtoku, 135-8550, Japan
Research Site
Koszalin, 75-581, Poland
Research Site
Piotrkow Trybunalski, 97-300, Poland
Research Site
Przemyśl, 37-700, Poland
Research Site
Seoul, 03080, South Korea
Research Site
Seoul, 03722, South Korea
Research Site
Seoul, 06351, South Korea
Research Site
Seoul, 06591, South Korea
Research Site
Seoul, 5505, South Korea
Research Site
Barcelona, 08035, Spain
Research Site
Barcelona, 08036, Spain
Research Site
Barcelona, 08041, Spain
Research Site
L'Hospitalet de Llobregat, 08908, Spain
Research Site
Madrid, 28027, Spain
Research Site
Pamplona, 31005, Spain
Research Site
Santander, 39008, Spain
Research Site
Valencia, 46009, Spain
Research Site
Cambridge, CB2 0QQ, United Kingdom
Research Site
London, EC1A 7BE, United Kingdom
Research Site
London, SE1 9RT, United Kingdom
Research Site
Plymouth, PL6 8DH, United Kingdom
Research Site
Sutton, SM2 5PT, United Kingdom
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Central Study Contacts
AstraZeneca Clinical Study Information Center
CONTACT
Study Design
- Study Type
- interventional
- Phase
- phase 1
- Allocation
- RANDOMIZED
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- SEQUENTIAL
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
September 12, 2025
First Posted
September 18, 2025
Study Start
October 1, 2025
Primary Completion (Estimated)
January 18, 2029
Study Completion (Estimated)
January 18, 2029
Last Updated
April 8, 2026
Record last verified: 2026-04
Data Sharing
- IPD Sharing
- Will share
- Shared Documents
- STUDY PROTOCOL, SAP
- Time Frame
- AstraZeneca will meet or exceed data availability as per the commitments made to the EFPIA PhRMA Data Sharing Principles. For details of our timelines, please rerefer to our disclosure commitment at https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure.
- Access Criteria
- When a request has been approved AstraZeneca will provide access to the anonymized individual patient-level data via secure research environment Vivli.org. Signed Data Usage Agreement (non-negotiable contract for data accessors) must be in place before accessing requested information.
Qualified researchers can request access to anonymized individual patient-level data from AstraZeneca group of companies sponsored clinical trials via the request portal Vivli.org. All requests will be evaluated as per the AZ disclosure commitment: https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure. Yes, indicates that AZ are accepting requests for IPD, but this does not mean all requests will be shared.