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A study of androgen deprivation therapy (ADT) plus apalutamide in patients with prostate cancer
EU CTIS ID: 2023-506153-38-00
What this study is testing
To determine if treatment with apalutamide plus ADT before and after RP with pLND in subjects with high-risk localized or locally advanced prostate cancer results in an improvement in pCR rate and MFS based on conventional or PSMA PET imaging, as compared to placebo plus ADT
- Therapeutic confirmatory (Phase III)
A plain-language read of the study's public EU CTIS listing. The study team confirms the details.
Who can take part
You may be able to join if
- 1. Must be ≥18 years of age
- 10. Criterion modified per Amendment 1 10.1. Criterion modified per Amendment 2 10.2. Criterion modified per Amendment 7 10.3. Contraceptive use by male subjects (and female partners of male subjects enrolled in the study who are of childbearing potential or are pregnant) should be consistent with local regulations regarding the use of contraceptive methods for subjects participating in clinical studies.
- 2. Signed an informed consent form (ICF) indicating that the subject understands the purpose of and procedures required for the study and is willing to participate in the study; subjects must be willing and able to adhere to the prohibitions and restrictions specified in this protocol (Section 4.3)
- 3. Histologically confirmed adenocarcinoma of the prostate
- 4. Criterion modified per Amendment 1 4.1. Criterion modified per Amendment 2 4.2 High risk disease defined by a total Gleason Sum Score ≥4+3 (=Grade Groups [GG] 3 5) and ≥1 of the following 4 criteria: • Any combination of Gleason Score 4+3 (=GG 3) and Gleason Score 8 (4+4 or 5+3) in ≥6 systematic cores (with ≥1 core Gleason Score 8 [4+4 or 5+3] included); • Any combination of Gleason Score 4+3 (=GG 3) and Gleason Score 8 (4+4 or 5+3) in ≥3 systematic cores and PSA ≥20 ng/mL (with ≥1 core Gleason Score 8 [4+4 or 5+3] included); • Gleason Score ≥9 (=GG 5) in at least 1 systematic or targeted core; or • At least 2 systematic or targeted cores with continuous Gleason Score ≥8 (=GG 4), each with ≥80% involvement
- 5. Criterion modified per Amendment 1 5.1. Candidate for RP with pLND as per the investigator
You likely can't join if
- 1. Distant metastasis based on conventional imaging (clinical stage M1). Nodal disease below the iliac bifurcation (clinical stage N1) is not an exclusion. Diagnosis of distant metastasis (clinical M stage; M0 versus M1a, M1b, M1c) and pelvic nodal disease (clinical N stage; N1 versus N0) will be assessed by central radiological review. Patients are considered eligible only if the central radiological review confirms clinical stage M0
- 10. Human immunodeficiency virus-positive subjects with 1 or more of the following: a. Not receiving highly active antiretroviral therapy b. Had a change in antiretroviral therapy within 6 months of the start of screening c. Receiving antiretroviral therapy that may interfere with study drug (consult sponsor for review of medication prior to enrollment) d. CD4 count <350 at screening e. AIDS-defining opportunistic infection within 6 months of start of screening
- 11. Active or symptomatic viral hepatitis or chronic liver disease; ascites or bleeding disorders secondary to hepatic dysfunction
- 12. Criterion modified per Amendment 2 12.1. History of seizure; any condition that may predispose to seizure (including, but not limited to, prior stroke, transient ischemic attack, or loss of consciousness ≤1 year prior to randomization); presence of brain arteriovenous malformation; or intracranial masses such as schwannomas and meningiomas that are causing edema or mass effect
- 13. Treatment with drugs known to lower the seizure threshold within 4 weeks prior to randomization
- 14. Gastrointestinal conditions affecting absorption
See the full eligibility criteria
Who can join
- 1. Must be ≥18 years of age
- 10. Criterion modified per Amendment 1 10.1. Criterion modified per Amendment 2 10.2. Criterion modified per Amendment 7 10.3. Contraceptive use by male subjects (and female partners of male subjects enrolled in the study who are of childbearing potential or are pregnant) should be consistent with local regulations regarding the use of contraceptive methods for subjects participating in clinical studies.
- 2. Signed an informed consent form (ICF) indicating that the subject understands the purpose of and procedures required for the study and is willing to participate in the study; subjects must be willing and able to adhere to the prohibitions and restrictions specified in this protocol (Section 4.3)
- 3. Histologically confirmed adenocarcinoma of the prostate
- 4. Criterion modified per Amendment 1 4.1. Criterion modified per Amendment 2 4.2 High risk disease defined by a total Gleason Sum Score ≥4+3 (=Grade Groups [GG] 3 5) and ≥1 of the following 4 criteria: • Any combination of Gleason Score 4+3 (=GG 3) and Gleason Score 8 (4+4 or 5+3) in ≥6 systematic cores (with ≥1 core Gleason Score 8 [4+4 or 5+3] included); • Any combination of Gleason Score 4+3 (=GG 3) and Gleason Score 8 (4+4 or 5+3) in ≥3 systematic cores and PSA ≥20 ng/mL (with ≥1 core Gleason Score 8 [4+4 or 5+3] included); • Gleason Score ≥9 (=GG 5) in at least 1 systematic or targeted core; or • At least 2 systematic or targeted cores with continuous Gleason Score ≥8 (=GG 4), each with ≥80% involvement
- 5. Criterion modified per Amendment 1 5.1. Candidate for RP with pLND as per the investigator
- 6. Eastern Cooperative Oncology Group (ECOG) Performance Status score of 0 or 1
- 7. Criterion modified per Amendment 1 7.1. Criterion modified per Amendment 2 7.2. Adequate organ function determined by the following central laboratory values: a. Aspartate aminotransferase (AST), alanine aminotransferase (ALT), and total bilirubin within normal limits, ie, ≤ the upper limit of normal ([ULN]; note that in subjects with Gilbert's syndrome, if total bilirubin is >1.5 X ULN, measure direct and indirect bilirubin. If direct bilirubin is ≤1.5 X ULN, the subject may be eligible); b. Serum creatinine <1.8 mg/dL; c. Platelets ≥75,000/microliter, without transfusion and/or growth factors within 1 month prior to randomization; d. Hemoglobin ≥12.0 g/dL (7.4 mmol), without transfusion and/or growth factors within 1 month prior to randomization
- 8. Criterion modified per Amendment 4 8.1 Able to receive ADT for at least 13 months, based on cardiovascular risk assessment and the investigator's assessment
- 9. Criterion modified per Amendment 1 9.1. Be able to swallow whole study drug tablets
What rules you out
- 1. Distant metastasis based on conventional imaging (clinical stage M1). Nodal disease below the iliac bifurcation (clinical stage N1) is not an exclusion. Diagnosis of distant metastasis (clinical M stage; M0 versus M1a, M1b, M1c) and pelvic nodal disease (clinical N stage; N1 versus N0) will be assessed by central radiological review. Patients are considered eligible only if the central radiological review confirms clinical stage M0
- 10. Human immunodeficiency virus-positive subjects with 1 or more of the following: a. Not receiving highly active antiretroviral therapy b. Had a change in antiretroviral therapy within 6 months of the start of screening c. Receiving antiretroviral therapy that may interfere with study drug (consult sponsor for review of medication prior to enrollment) d. CD4 count <350 at screening e. AIDS-defining opportunistic infection within 6 months of start of screening
- 11. Active or symptomatic viral hepatitis or chronic liver disease; ascites or bleeding disorders secondary to hepatic dysfunction
- 12. Criterion modified per Amendment 2 12.1. History of seizure; any condition that may predispose to seizure (including, but not limited to, prior stroke, transient ischemic attack, or loss of consciousness ≤1 year prior to randomization); presence of brain arteriovenous malformation; or intracranial masses such as schwannomas and meningiomas that are causing edema or mass effect
- 13. Treatment with drugs known to lower the seizure threshold within 4 weeks prior to randomization
- 14. Gastrointestinal conditions affecting absorption
- 15. Criterion modified per Amendment 1 15.1. Known or suspected contraindications or hypersensitivity to apalutamide, GnRHa or any of the components of the formulations
- 16. Any condition for which, in the opinion of the investigator, participation would not be in the best interest of the subject
- 17. Criterion modified per Amendment 2 17.1. Active malignancies (ie, progressing or requiring treatment or treatment change in the last 24 months) other than prostate cancer. The only allowed exceptions are: non-muscle invasive bladder cancer (NMIBC); skin cancer (non-melanoma or melanoma) treated within the last 24 months that is considered completely cured; breast cancer (adequately treated lobular carcinoma in situ or ductal carcinoma in situ, or history of localized breast cancer and receiving antihormonal agents and considered to have a very low risk of recurrence); malignancy that is considered cured with minimal risk of recurrence.
- 2. Criterion modified per Amendment 2 2.1. (a) Prior treatment with androgen receptor antagonists. (b) Treatment with GnRHa prior to ICF signature.
- 3. Criterion deleted per Amendment 1
- 4. Criterion deleted per Amendment 1
- 5. Bilateral orchiectomy
- 6. Criterion modified per Amendment 1 6.1. Criterion modified per Amendment 2 6.2. History of prior systemic or local therapy for prostate cancer, including pelvic radiation for prostate cancer
- 7. Criterion modified per Amendment 1 7.1. Use of any investigational agent ≤4 weeks prior to randomization or any therapeutic procedure for prostate cancer at any time
- 8. Major surgery ≤4 weeks prior to randomization
- 9. Criterion modified per Amendment 4 9.1 Any of the following within 12 months prior to first dose of study drug: severe or unstable angina, myocardial infarction, symptomatic congestive heart failure, arterial or venous thromboembolic events (eg, pulmonary embolism, cerebrovascular accident including transient ischemic attacks), or clinically significant ventricular arrhythmias or New York Heart Association Class II to IV heart disease; uncomplicated deep vein thrombosis is not considered exclusionary
The study team makes the final eligibility decision.
Where it's taking place
- Canada
- Australia
- Israel
- United Kingdom
- United States
- Korea, Republic of
- Argentina
- Brazil
- Russian Federation
- Taiwan
- Japan
Questions & answers
Do participants get paid in this trial?
This listing doesn't specify compensation. Many trials still reimburse travel or offer a stipend, so it's worth asking the study team when you connect.
Is it free to join, and do I need insurance?
Searching and applying through BridgeMD is free. In clinical trials the study-related treatment and visits are generally provided at no cost to you. You usually don't need insurance to take part - confirm specifics with the study team.
How long does this study last?
The listing doesn't state an exact length. The study team walks you through the schedule and number of visits before you decide to enroll.
Who can join this trial?
This study is enrolling male, 65+ years, 18-64 years. The study team makes the final eligibility decision.
Where is this trial taking place?
Study sites include Canada; Australia; Israel; United Kingdom; United States; Korea, Republic of and 5 more location(s). Enter your location above to see the nearest site and check your eligibility.
Explore other conditions
BridgeMD is an information and trial-matching tool - not medical advice, and not the study sponsor. Details come from EU CTIS; the study team decides eligibility.