E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Patients with metastatic castration-resistant prostate cancer (mCRPC) positive for circulating tumor cells (CTC) with homologous recombination
deficiency |
|
E.1.1.1 | Medical condition in easily understood language |
Patients with metastatic castration-resistant prostate cancer |
|
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 | 21.1 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10036909 |
E.1.2 | Term | Prostate cancer metastatic |
E.1.2 | System Organ Class | 10029104 - Neoplasms benign, malignant and unspecified (incl cysts and polyps) |
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E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 21.1 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10076506 |
E.1.2 | Term | Castration-resistant prostate cancer |
E.1.2 | System Organ Class | 10029104 - Neoplasms benign, malignant and unspecified (incl cysts and polyps) |
|
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 evaluate the efficacy of pamiparib in patients with metastatic castration-resistant prostate cancer (mCRPC) positive for circulating tumor cells (CTC) with homologous recombination deficiency (CTC-HRD-positive; per Epic Sciences assay), as per Prostate Cancer Clinical Trials Working Group [PCWG3] criteria. |
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E.2.2 | Secondary objectives of the trial |
- To further evaluate the efficacy of pamiparib in patients with CTC-HRD-positive mCRPC with measurable disease (Cohort 1 of Synopsis Table 1), as per PCWG3 criteria;
- To further evaluate the efficacy of pamiparib in patients with CTC-HRD-positive mCRPC with or without measurable disease (Cohorts 1 and 2 of Synopsis Table 1, respectively), as per PCWG3 criteria;
- To evaluate the safety and tolerability of pamiparib. |
|
E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
- The population under study is men (> 18 years of age) with histologically or cytologically confirmed adenocarcinoma or poorly differentiated adenocarcinoma of the prostate without neuroendocrine differentiation with HRD deficiency by CTC-HRD assay and/or deleterious germline or somatic mutation in BRCA1 or BRCA2; mCRPC measurable disease and/or bone disease. Patients must have PSA progression with > 3 rising PSA levels with > 1 week between determinations and a screening PSA > 2 μg/L (2 ng/mL). Patients must be surgically or medically castrated with serum testosterone levels of < 1.73 nmol/L (50 ng/dL), must have received > 1 prior androgen receptor-targeted therapy, and must have received > 1 taxane-based therapy.
- mCRPC with 1 or 2 of the following:
- Measurable disease per RECIST v1.1
- Bone disease
- CTC-HRD+ or BRCA1/2 mutation
- PSA progression (PCWG3 criteria)
- ≥1 androgen receptor-targeted therapy (eg, abiraterone acetate/prednisone or enzalutamide) for mCRPC with progressive disease
- ≥1 taxane for metastatic prostate cancer
- Prior sipuleucel-T and checkpoint inhibitors |
|
E.4 | Principal exclusion criteria |
- Chemotherapy, hormonal therapy, biologic therapy, radionuclide therapy, immunotherapy, investigational agent, anticancer Chinese medicine, or herbal remedies ≤ 5 half-lives if the half-life is known, ≤ 14 days if not known, before start of study treatment.
- Continued treatment with a bisphosphonate or denosumab is allowed, if administered at a stable dose > 28 days before start of study treatment.
- Radiotherapy ≤ 21 days (≤ 14 days, if single fraction of radiotherapy) before start of study treatment.
- Prior treatment for prostate cancer with any of the following:
- PARP inhibitor
- Platinum
- Cyclophosphamide
- Mitoxantrone |
|
E.5 End points |
E.5.1 | Primary end point(s) |
1. Objective Response Rate determined by independent central review [Time Frame: through study completion, an average of 1 year]
2. Prostate-Specific Antigen (PSA) response rate [Time Frame: through study completion, an average of 1 year] |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
Through study completion, an average of 1 year; 24 months since the first patient enrolled |
|
E.5.2 | Secondary end point(s) |
1. Duration of response [Time Frame: through study completion, an average of 1 year]
2. Objective Response Rate by Investigator [Time Frame: through study completion, an average of 1 year]
3. Time to Objective Response [Time Frame: through study completion, an average of 1 year] |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
Through study completion, an average of 1 year; 24 months since the first patient enrolled |
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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 | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
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) | Yes |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | No |
E.8.1.1 | Randomised | No |
E.8.1.2 | Open | Yes |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | No |
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 | No |
E.8.2.3 | Other | No |
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 | 4 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 24 |
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 |
Australia |
Spain |
United Kingdom |
United States |
|
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
|
The end of study is defined as the last patient last visit at the end of the long-term follow-up phase. This is the last timepoint for data collection. A patient is considered on study as long as the patient is still in long-term follow-up. |
|
E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 2 |
E.8.9.1 | In the Member State concerned months | 7 |
E.8.9.1 | In the Member State concerned days | |
E.8.9.2 | In all countries concerned by the trial years | 3 |