E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Postmenopausal women with advanced breast cancer, progressing or relapsing after previous endocrine therapy |
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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 |
To compare the efficacy of fulvestrant 500 mg treatment with fulvestrant 250 mg treatment in terms of time to progression (TTP) |
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E.2.2 | Secondary objectives of the trial |
To compare fulvestrant 500 mg treatment with fulvestrant 250 mg treatment in terms of the following parameters: 1. Objective Response rate (ORR) (defined by RECIST criteria) 2. Clinical Benefit Rate 3. Duration of response (DoR) 4. Duration of clinical benefit (DoCB) 5. Overall survival (OS) 6. Frequency and severity of adverse events 7. Quality of Life (QoL)
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E.2.3 | Trial contains a sub-study | Information not present in EudraCT |
E.3 | Principal inclusion criteria |
1. Provision of written informed consent
2. Histological/cytological confirmation of breast cancer
3. Documented positive oestrogen receptor status (ER +ve) of primary or metastatic tumour tissue, according to the local laboratory parameters.
4. Requiring hormonal treatment, defined as either: - Relapsing during, or within 12 months of completion of, adjuvant endocrine therapy (tamoxifen, toremifene or aromatase inhibitors such as anastrozole, letrozole and exemestane) - Progressing on an endocrine therapy (tamoxifen, toremifene or aromatase inhibitors such as anastrozole, letrozole and exemestane) given as first treatment for patients with de novo advanced breast cancer (defined as metastatic disease or locally advanced disease which is not amenable to treatment with curative intent) - Progressing on an endocrine therapy (tamoxifen, toremifene or aromatase inhibitors such as anastrozole, letrozole and exemestane) provided that this endocrine treatment was started at least 12 months after the completion of adjuvant endocrine treatment
5. Patients fulfilling one of the following criteria: - Patients with measurable disease as per RECIST criteria. This is defined as at least one lesion that can be accurately measured in at least one dimension (longest diameter to be recorded) as greater than or equal to 20mm with conventional technique or as ïgreater than or equal to 10 mm with spiral CT scan or MRI - Patients with bone lesions, lytic or mixed (lytic + sclerotic), in the absence of measurable disease as defined by RECIST criteria
6. Postmenopausal woman, defined as a woman fulfilling any 1 of the following criteria:
- Age greater than or equal to 60 years. - Age greater than or equal to 45 years with amenorrhoea of at least 12 months with an intact uterus. - Having undergone a bilateral oophorectomy. - FSH and oestradiol levels in postmenopausal range (utilising ranges from the testing laboratory facility). - In patients who have previously been treated with an LH-RH analogue, the last depot must have been administered more than 4 months prior to randomisation, menses must not have restarted, and FSH and oestradiol levels must also be in the postmenopausal range (utilising ranges from the testing laboratory facility).
7. WHO performance status 0, 1 or 2.
For inclusion in the translational research component of the study, patients must fulfil the following criteria:
1. Provision of informed consent for translational research component If a patient declines to participate in the translational research component of the study, there will be no penalty or loss of benefit to the patient. The patient will not be excluded from other aspects of the study described in this Clinical Study Protocol, so long as they consent. |
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E.4 | Principal exclusion criteria |
Any of the following is regarded as a criterion for exclusion from the study:
1. Presence of life-threatening metastatic visceral disease, defined as extensive hepatic involvement, or any degree of brain or leptomeningeal involvement (past or present), or symptomatic pulmonary lymphangitic spread. Patients with discrete pulmonary parenchymal metastases are eligible, provided their respiratory function is not compromised as a result of disease.
2. More than one regimen of chemotherapy for advanced disease. Note: Patients previously treated with one regimen of chemotherapy for advanced disease are allowed as long as their last treatment is an anti-oestrogen or an aromatase inhibitor.
3. More than one regimen of endocrine therapy for advanced disease. Note: Oophorectomy, ovarian ablation, or LH-RH analogue therapy do not count as endocrine treatments in this context and also do not render the patient ineligible for this study.
4. Extensive radiation therapy within the last 4 weeks (greater than or equal to 30% marrow or whole pelvis or spine) or cytotoxic treatment within the past 4 weeks prior to screening laboratory assessment, or strontium-90 (or other radiopharmaceuticals) within the past 3 months.
5. Treatment with a non-approved or experimental drug within 4 weeks before randomisation.
6. Current or prior malignancy within previous 3 years (other than breast cancer or adequately treated basal cell or squamous cell carcinoma of the skin or in-situ carcinoma of the cervix).
7. Any of the following laboratory values: - Platelets < 100 x 10E9 / L - Total bilirubin > 1.5 x ULRR - ALT or AST > 2.5 x ULRR if no demonstrable liver metastases or > 5 x ULRR in presence of liver metastases
8. History of: - bleeding diathesis (i.e., disseminated intravascular coagulation [DIC], clotting factor deficiency), or - long-term anticoagulant therapy (other than antiplatelet therapy and low dose warfarin).
9. History of hypersensitivity to active or inactive excipients of fulvestrant and/or castor oil.
10. Any severe concomitant condition which makes it undesirable for the patient to participate in the trial or which would jeopardize compliance with the trial protocol. e.g., uncontrolled cardiac disease or uncontrolled diabetes mellitus. |
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E.5 End points |
E.5.1 | Primary end point(s) |
The primary variable for this study is time to progression (TTP), which is defined as the time from randomization to the time of the earliest objective disease progression, including death from any cause. |
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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 | No |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | Yes |
E.6.10 | Pharmacogenetic | Information not present in EudraCT |
E.6.11 | Pharmacogenomic | Yes |
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 | Yes |
E.8.2.3.1 | Comparator description |
500 mg cohort (2 x 5ml dose active) vs 250 mg cohort (1 x 5ml dose active + 1 x 5 ml dose placebo) |
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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.8.5 | The trial involves multiple Member States | Yes |
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 | Information not present in EudraCT |
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 |
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E.8.7 | Trial has a data monitoring committee | Information not present in EudraCT |
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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The formal analysis for TTP will be carried out when at least 632 progression events have been observed. When at least 50% of patients have died, subject to regulatory confirmation, the study may be closed following analysis of the survival data and no further study data will be collected. Patients still receiving randomised treatment at this time will be transferred to open-label supplies until disease progression. |
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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 | 2 |
E.8.9.1 | In the Member State concerned months | 8 |
E.8.9.1 | In the Member State concerned days | |
E.8.9.2 | In all countries concerned by the trial years | 2 |
E.8.9.2 | In all countries concerned by the trial months | 8 |