E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Patients with low and high grade serous and endometrioid ovarian cancer patients. |
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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] - Female diseases of the urinary and reproductive systems and pregancy complications [C13] |
MedDRA Classification |
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 |
The primary objective in this study is to evaluate the efficacy of letrozole maintenance therapy after standard surgical and chemotherapy treatment as measured by Progression Free Survival (PFS) compared to no maintenance therapy (placebo) in patients with newly diagnosed ER positive epithelial ovarian cancer(histologic subtype: serous or endometrioid of low/high grade, including fallopian tube and primary peritoneal cancer) of FIGO Stage II-IV, with or without residual disease and with or without concomitant anti-VEGF and/or PARPi medication, whose cancer has not progressed by the end of adjuvant chemotherapy treatment. |
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E.2.2 | Secondary objectives of the trial |
To determine the impact of letrozole maintenance compared to placebo after primary treatment in ER positive advanced stage ovarian/ tubal/ peritoneal cancer patients on Overall Survival (OS), Quality Adjusted Progression Free Survival (QAPFS), Time to First Subsequent Treatment (TFST), Quality adjusted Time Without Symptoms of disease and Toxicity (Q-TWiST) and Health Related Quality of Life (QoL) assessed via specific questionnaires. |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
· Patients must be ≥18 years of age · Willing and able to attend the visits and to understand all study-related procedures. · Primary, newly diagnosed FIGO Stage II to IV and histologically confirmed low or high grade serous or endometrioid epithelial ovarian/fallopian tube/peritoneal cancer · (Interval-) debulking performed · ECOG-Performance Status 0-2 · Signed informed consents (ICF-1; ICF-2) · Paraffin-embedded tissue or paraffin-embedded cell block (from ascites) available · Positivity (≥ 1%) for ER expression (only determined by Histopathology Core Facility of MATAO trial) · At least 4 cycles of platinum-based chemotherapy (neoadjuvant allowed) · Negative serum pregnancy test in women of childbearing potential who will get/have gotten a surgical resection or radiation sterilization, prior to the intervention in the therapeutical maintenance setting. |
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E.4 | Principal exclusion criteria |
• Progressive disease at the end of adjuvant treatment • Women of childbearing potential (not having undergone a surgical or radiation sterilization and not getting a surgical resection, prior to the intervention in the therapeutical maintenance setting) • Pregnant or lactating women • Any other malignancy within the last 5 years which has impact on the prognosis of the patient • < 4 cycles of chemotherapy in total • Contraindications to endocrine therapy • Inability or unwillingness to swallow tablets • Patients with a known intolerance to galactose, lactase deficiency and glucose-galactose mal-absorption
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E.5 End points |
E.5.1 | Primary end point(s) |
Progression-Free Survival (PFS), defined as the time from randomization until the date of progression (recurrence) or death by any cause in the absence of progression.
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
5 years after study start |
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E.5.2 | Secondary end point(s) |
Overall Survival (OS), defined for each patient as the time from randomization until the date of death from any cause. Patients not having an event at the time of analysis will be censored at the date they were last known to be alive. |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
After 5 years of study start |
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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 | No |
E.6.5 | Efficacy | No |
E.6.6 | Pharmacokinetic | No |
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) | 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 | 26 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 34 |
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 |
Switzerland |
Austria |
Germany |
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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 | 3 |
E.8.9.1 | In the Member State concerned days | |
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 |