E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
High-risk localized or locally advanced prostate cancer |
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E.1.1.1 | Medical condition in easily understood language |
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E.1.1.2 | Therapeutic area | Diseases [C] - Cancer [C04] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.0 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10060862 |
E.1.2 | Term | Prostate cancer |
E.1.2 | System Organ Class | 10029104 - Neoplasms benign, malignant and unspecified (incl cysts and polyps) |
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E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
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 prostate specific membrane antigen (PSMA) positron emission tomography (PET) imaging, as compared to placebo plus ADT |
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E.2.2 | Secondary objectives of the trial |
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: - improvement of PSA-free survival - an improvement in EFS as compared with standard of care (SoC) - a prolongation of time to first subsequent local or systemic treatment (TTST1) - longer time to distant metastasis (TTDM) on conventional or PSMA PET imaging - an improvement of MFS based on conventional imaging
To characterize the safety profile of treatment with apalutamide plus ADT before and after RP with pLND in subjects with high risk localized or locally advanced prostate cancer |
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E.2.3 | Trial contains a sub-study | Yes |
E.2.3.1 | Full title, date and version of each sub-study and their related objectives |
This is an open-label substudy to compare the current standard of care (SoC) with perioperative apalutamide plus androgen deprivation therapy (ADT). The above referenced substudy is described with details on study design, hypothesis, objectives, and endpoints in Attachment 9 (Open-label Substudy) of Protocol Amendment 6 dated 04 November 2021. The primary objective of this substudy is 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 event-free survival (EFS) as compared with SoC. Key secondary objectives are to determine if this treatment results in improvement of other efficacy endpoints and to characterize the safety profile. |
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E.3 | Principal inclusion criteria |
1. Must be ≥18 years of age 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 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. |
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E.4 | Principal exclusion criteria |
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 2. Criterion modified per Amendment 2 2.1. (a) Prior treatment with androgen receptor antagonists. (b) Treatment with GnRHa analogs 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 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 analogues 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. |
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E.5 End points |
E.5.1 | Primary end point(s) |
- pCR rate (as defined in the pathology charter and assessed by a pathology blinded independent central review [BICR])
- MFS based on conventional or PSMA PET imaging (defined as the time from randomization to the date of the first occurrence of radiographic distant metastasis on conventional [ie, computed tomography (CT)/magnetic resonance imaging (MRI) and bone scan] or PSMA PET imaging evaluated by radiology BICR, pathologic finding of distant metastasis, or death from any cause, whichever occurs first). |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
1. at radical prostatectomy 2. until documented distant metastasis, death, lost to follow-up, withdrawal of consent, or termination of the study by the sponsor, whichever occurs first |
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E.5.2 | Secondary end point(s) |
- Prostate-specific antigen (PSA)-free survival - EFS defined as time from randomization to any of the following events: biochemical failure (BCF); or local or regional recurrence on PSMA PET or conventional imaging by BICR; or histopathological assessment; or Distant metastasis on PSMA PET or conventional imaging by BICR or histopathological assessment; or Death - TTST1 - TTDM on conventional or PSMA PET imaging - MFS based on conventional imaging, defined as the time from randomization to the date of the first occurrence of radiographic distant metastasis on CT/MRI and bone scan by radiology BICR, pathologic finding of distant metastasis, or death from any cause, whichever occurs first - Adverse events (AEs), vital signs measurements, physical examinations, clinical laboratory tests, and treatment compliance. |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
1. the time from randomization to the first detectable serum PSA level with recovered testosterone levels after undetectable PSA post-radical prostatectomy with lymph node dissection (RPLND) or death, whichever occurs first 2. time from randomization to first documentation of BICR-confirmed radiographic progressive disease or death due to any cause (whichever occurs first) + 1 day 3. from signing of consent until 30 days after last dose of study drug. Clinical Labs & compliance per T&E on treatment |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | Yes |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | Yes |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | Yes |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | Yes |
E.6.13.1 | Other scope of the trial description |
Biomarkers and tolerability |
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E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | Yes |
E.8.1.5 | Parallel group | Yes |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | Yes |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 2 |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 6 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 71 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
Argentina |
Australia |
Brazil |
Canada |
Israel |
Japan |
Korea, Republic of |
Taiwan |
United States |
France |
Poland |
Netherlands |
Spain |
Czechia |
Germany |
Italy |
Russian Federation |
United Kingdom |
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E.8.7 | Trial has a data monitoring committee | Yes |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 5 |
E.8.9.1 | In the Member State concerned months | 0 |
E.8.9.1 | In the Member State concerned days | 0 |
E.8.9.2 | In all countries concerned by the trial years | 5 |
E.8.9.2 | In all countries concerned by the trial months | 3 |
E.8.9.2 | In all countries concerned by the trial days | 9 |