E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Newly diagnosed, histologically-confirmed stage III-IV endometrial carcinoma/carcinosarcoma with residual disease after surgery, either measurable or evaluable, and naïve to first line systemic anti-cancer treatment. Recurrent endometrial cancer patients if not yet treated for recurrent disease. |
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E.1.1.1 | Medical condition in easily understood language |
Advanced or recurrent endometrial cancer |
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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 | 21.1 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10014772 |
E.1.2 | Term | Endometrioid adenocarcinoma recurrent |
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 | 10014776 |
E.1.2 | Term | Endometrioid adenocarcinoma stage III |
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 | 10014777 |
E.1.2 | Term | Endometrioid adenocarcinoma stage IV |
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 evaluate the efficacy in terms of PFS of first-line atezolizumab versus placebo in combination with carboplatin and paclitaxel in patients with MSI advanced stage III/IV or recurrent endometrial cancer. To evaluate the efficacy in terms of PFS of first-line atezolizumab versus placebo in combination with carboplatin and paclitaxel in patients with advanced stage III/IV or recurrent endometrial cancer. To evaluate the efficacy in terms of OS of first-line atezolizumab versus placebo in combination with carboplatin and paclitaxel in patients with advanced stage III/IV or recurrent endometrial cancer. |
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E.2.2 | Secondary objectives of the trial |
1. To determine the efficacy in terms of ORR, PFS, PFS2 and OS of atezolizumab compared to placebo in PD-L1-ve and PD-L1+ve subgroups. 2. To determine the efficacy in terms of ORR, PFS, PFS2 and OS of atezolizumab compared to placebo in subgroups according to MS status. 3. To assess biomarkers that are outcome-independent of treatment (i.e., prognostic biomarkers) and biomarkers of response to atezolizumab (i.e., predictive biomarkers) such as pharmacodynamic exploratory biomarkers and their association with disease status and/or response to study drug. 4. To evaluate other exploratory biomarkers exploiting liquid biopsies (e.g. circulating tumour DNA [ct-DNA]) for longitudinal monitoring of dynamic biological features of the tumor. 5. To evaluate the relation between ADAs and PK, toxicity and efficacy of atezolizumab.
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
I-1. Newly diagnosed, histologically-confirmed with residual disease after surgery either measurable or evaluable, or inoperable stage III-IV endometrial carcinoma/carcinosarcoma, after diagnostic biopsy, and naïve to first line systemic anti-cancer treatment. Recurrent endometrial cancer patients if not yet treated for recurrent disease. Hormonal treatment (including but not limited to progestins, tamoxifen, luteinizing hormone-releasing hormone agonists, aromatase inhibitors) without chemotherapy is allowed. I-2. Eastern Cooperative Oncology Group (ECOG) performance status 0-2 I-3. Age ≥ 18 years I-4. In recurrent patients, only one prior line of systemic platinum-based regimen is permitted if the platinum-free interval ≥ 6 months. Such prior line is the up-front/adjuvant treatment which can be concurrent chemoradiation or concurrent chemoradiation followed by chemotherapy or only chemotherapy. I-5. Patients with history of primary breast cancer may be eligible provided they completed their definitive anticancer treatment more than 3 years ago and they remain breast cancer disease free prior to start of study treatment. I-6. Previous pelvic and outside pelvis radiation is allowed, except for whole abdominal radiotherapy, if completed more than 6 weeks ago. I-7. Capability to give signed informed consent and ability to comply with treatment and follow-up. All patients must sign informed consent form prior their participation in the study. I-8. Representative FFPE tumor sample or, only if unfeasible, at least 20 unstained slides from initial surgery or from diagnostic biopsy, in case surgery was not performed, available and sent to central laboratory for Micro Satellite (MS) determination prior to randomization. I-9. Patients must have normal organ and bone marrow function : a. Haemoglobin ≥ 10.0 g/dL. b. Absolute neutrophil count (ANC) ≥ 2.0 x 109/L. c. Platelet count ≥ 100 x 109/L. d. Total bilirubin ≤ 1.5 x institutional upper limit of normal (ULN). e. Aspartate aminotransferase /Serum Glutamic Oxaloacetic Transaminase (ASAT/SGOT)) and Alanine aminotransferase /Serum Glutamic Pyruvate Transaminase (ALAT/SGPT)) ≤ 2.5 x ULN, unless liver metastases are present in which case they must be ≤ 5 x ULN. f. Serum creatinine ≤ 1.5 x institutional ULN g. Creatinine clearance ≥ 30 mL/min |
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E.4 | Principal exclusion criteria |
E-1.Other malignancy within the last 5 years except: adequately treated non-melanoma skin cancer, curatively treated in situ cancer of the cervix, ductal carcinoma in situ (DCIS) of the breast. Patients with a history of localized malignancy diagnosed over 5 years ago may be eligible provided they completed their adjuvant systemic therapy prior to randomization and that the patient remains free of recurrent or metastatic disease. E-2.Patients with uterine leiomyosarcoma. E-3.Major surgery within 4 weeks of starting study treatment or patients who have not completely recovered from the effects of any major surgery. E-4.Previous allogeneic bone marrow transplant or previous solid organ transplantation. E-5.Administration of other simultaneous chemotherapy drugs, any other anticancer therapy or anti-neoplastic hormonal therapy, or simultaneous radiotherapy during the trial treatment period (hormonal replacement therapy is permitted). E-6.Prior treatment with CD137 agonists or immune checkpoint blockade therapies, anti−PD1, or anti−PDL1 therapeutic antibodies or anti-CTLA4 . E-7.Treatment with systemic immunostimulatory agents. E-8. Treatment with systemic corticosteroids or other systemic immunosuppressive medications. E-9.History of autoimmune disease E-10.Immunocompromised patients, e.g., patients who are known to be serologically positive for human immunodeficiency virus (HIV). E-11.Patients with active hepatitis B (defined as having a positive hepatitis B surface antigen [HBsAg] test at screening) or hepatitis C . E-12.Evidence of active tuberculosis E-13.Signs or symptoms of infection within 2 weeks prior to Cycle 1, Day 1 E-14.Administration of a live, attenuated vaccine within 4 weeks prior to Cycle 1, Day 1 or anticipation that such a live attenuated vaccine will be required during the study. Influenza vaccination should be given during influenza season only (example approximately October to March in the Northern Hemisphere). Patients must not receive live, attenuated influenza vaccine. The use of yellow fever vaccines is contraindicated. E-15.Clinically significant (e.g. active) cardiovascular disease, including: a.Myocardial infarction or unstable angina within ≤ 6 months of randomization, b.New York Heart Association (NYHA) ≥ grade 2 congestive heart failure (CHF), c.Poorly controlled cardiac arrhythmia despite medication (patients with rate controlled atrial fibrillation are eligible), d.Peripheral vascular disease grade ≥ 3 (e.g. symptomatic and interfering with activities of daily living [ADL] requiring repair or revision) E-16.Resting ECG with QTc > 470 msec on 2 or more time points within a 24 hour period or family history of long QT syndrome. E-17.History or clinical suspicion of brain metastases or spinal cord compression. CT/MRI of the brain is mandatory (within 4 weeks prior to randomization) in case of suspected brain metastases. Spinal MRI is mandatory (within 4 weeks prior to randomization) in any case of suspected central nervous system (CNS) involvement . E-18.History or evidence upon neurological examination of central nervous system (CNS) disease, unless asymptomatic and adequately treated with standard medical therapy. E-19.Evidence of any other disease, metabolic dysfunction, physical examination finding or laboratory finding giving reasonable suspicion of a disease or condition that contraindicates the use of an investigational drug or puts the patient at high risk for treatment related complications. Any known psychiatric or substance abuse disorders that would interfere with cooperation and fulfilment of trial requirements. E-20. Women of childbearing potential (<2 years after last menstruation) not willing to use highly-effective means of contraception (which include combined hormonal contraception associated with inhibition of ovulation, progestogen-only hormonal contraception associated with inhibition of ovulation, intrauterine device (IUD), intrauterine hormone-releasing system (IUS), bilateral tubal occlusion, vasectomised partner, sexual abstinence) for the duration of treatment and up to the end of the relevant systemic exposure to the study drugs. E-21.Pregnant or lactating women. E-22.History of severe allergic, anaphylactic, or other hypersensitivity reactions to chimeric or humanized antibodies or fusion proteins. E-23.Known hypersensitivity or allergy to biopharmaceuticals produced in Chinese hamster ovary cells or to any component of the atezolizumab formulation. E-24.Known hypersensitivity reaction or allergy to drugs chemically related to carboplatin, paclitaxel, or their excipients that contraindicates the subject’s participation. |
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E.5 End points |
E.5.1 | Primary end point(s) |
The study has two coprimary endpoints: OS and PFS. PFS is defined as the time from randomization to the date of first progression or death from any cause, whichever comes first. Progression will be established as the radiological disease progression according to RECIST 1.1 or death from any cause, whichever occurs first. OS is defined as the time from randomization until the date of death from any cause. |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
Tumor assessments should be performed every 9 weeks during the chemotherapy treatment then every 12 weeks during the maintenance treatment (atezolizumab or placebo) for the first year from randomization. After the first year the assessment during the maintenance phase should be performed every 6 months until progression. Survival data will be collected up to the time of the final analysis. |
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E.5.2 | Secondary end point(s) |
Objective Response Rate (ORR), defined as the percentage of patients with an objective response as determined by RECIST 1.1 |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
Tumor assessments should be performed every 9 weeks during the chemotherapy treatment then every 12 weeks during the maintenance treatment (atezolizumab or placebo) for the first year from randomization. After the first year the assessment during the maintenance phase should be performed every 6 months until progression. |
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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) | 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 | 4 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 65 |
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 |
New Zealand |
Switzerland |
Taiwan |
Australia |
Japan |
Korea, Republic of |
United Kingdom |
Austria |
Germany |
Italy |
Spain |
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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 | 4 |
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 | 4 |
E.8.9.2 | In all countries concerned by the trial months | 7 |