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A trial to learn how safe AZD9750 is and how well it works in people withmetastatic prostate cancer when given with or without other anticancer drugs (ANDROMEDA)

A Phase I/II, Modular, Open-Label, Multi-Centre Study to Evaluate the Safety,Pharmacokinetics, Pharmacodynamics and Preliminary Efficacy of AZD9750as Monotherapy and in Combination with Other Anticancer Agents inParticipants with Metastatic Prostate Cancer (ANDROMEDA) (ANDROMEDA)

Hibi Kazushige

Astrazeneka K.K

3-1, Ofuka-cho, Kita-ku, Osaka-shi, Osaka

RD-clinical-information-Japan@astrazeneca.com

Hibi Kazushige

Astrazeneka K.K

3-1, Ofuka-cho, Kita-ku, Osaka-shi, Osaka

+81-6-4802-3600

RD-clinical-information-Japan@astrazeneca.com

Recruiting

Feb. 19, 2026

Interventional

single arm study

open(masking not used)

uncontrolled control

single assignment

treatment purpose

1. Participant must be 18 years or more or the legal age at the time of signing the informed consent form.

2. Histologically or cytologically confirmed diagnosis of adenocarcinoma of the prostate.

3. Documented metastatic disease.

4. Serum testosterone levels 50 ng/dL or less.

5. Evidence of disease progression with one of the following:

(a) PSA progression defined by a minimum of 3 rising PSA levels with an interval of 1 week or more between each determination.

(b) Radiographic progression of soft tissue disease by RECIST v1.1 with or without PSA progression.

(c) Radiographic progression of bone metastasis with 2 or more documented new bone lesions on a bone scan with or without PSA progression.

6. ECOG performance status score of 0 or 1.

7. Adequate bone marrow and organ function.

8. Part A (Module 1)

(a) Part A1 dose escalation: at least 1 prior ARPI and, if applicable, at least 1 taxane-based chemotherapy (regardless of whether in HSPC or CRPC setting).

(b) Part A2 backfill: at least 1 but no more than 2 prior ARPIs and, if applicable, at least 1 but no more than 2 prior taxane-based chemotherapies(regardless of whether in HSPC or CRPC setting).

9. Part B (Module 1)

(a) B1/B2 dose optimization/expansion: at least 1 but no more than 2 prior ARPIs and, if applicable, at least 1 but no more than 2 prior taxane-based chemotherapies (regardless of whether in HSPC or CRPC setting).

(b) B3 dose expansion (no taxane cohort): at least 1 but no more than 2prior ARPIs for metastatic prostate cancer (regardless of whether in HSPC or CRPC setting). No prior taxane is allowed for inclusion in this cohort.

1. Participants with pathological finding consistent with any presence of small cell carcinoma, predominant neuroendocrine carcinoma, or any predominant histology other than prostate adenocarcinoma.

2. Brain metastases, or spinal cord compression.

3. Any clinically significant cardiac disorders including QT prolongation, abnormal electrocardiogram (ECG).

4. Any clinically significant cardiovascular diseases including symptomatic heart failure, uncontrolled hypertension, acute coronary syndrome, cardiomyopathy, valvular heart disease, atrial fibrillation, stroke.

5. Active gastrointestinal disease or other condition that will interfere significantly with the absorption, distribution, metabolism of AZD9750 and relevant combination IMPs.

6. Participants with any known predisposition to bleeding (eg, active peptic ulceration, recent [within 6 months] hemorrhagic stroke, proliferative diabetic retinopathy).

7. Prior treatment with an AR-PROTAC.

Male

Prostate Cancer

AZD9750

Part A and Part B:
- To evaluate the safety and tolerability and determine the OBD, MTD and/or the RDE(s)/RP2D of AZD9750 as a monotherapy and in combination with other anticancer agents in participants with mCRPC

- To evaluate the preliminary antitumour efficacy of AZD9750 as monotherapy and in combination with other anticancer agents

- To characterise the PK of AZD9750 as monotherapy and in combination with other anticancer Agents. To charactise the PK of Saruparib (Module 2) in combination with AZD9750.

Part B
- To evaluate the preliminary antitumour efficacy of AZD9750 as monotherapy and in combination with other anticancer agents in participants with mCRPC.

+81-3-3542-2511

Feb. 17, 2026

Yes

Qualified researchers can request access to anonymized individual patient-level data from AstraZeneca group of companies sponsored clinical trials via the request portal. All request 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 dose not mean all request will be approved.

USA/UK/China/Australia/Canada/Spain/Netherland