E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
The treatment of advanced breast cancer aims at reducing tumor size, slowing progression and metastasis and reducing complications such as fatigue, bone fracture and hypercalcemia. Women with tumors which are hormone dependent are candidates for endocrine therapies which have been shown to effectively delay disease progression and are much less toxic than cytotoxic chemotherapy. This study investigates the benefit of combining the antiendocrine drug letrozole (Femara®) and everolimus (RAD001). |
|
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 demonstrate superior efficacy of the combination therapy of RAD001 10mg daily plus letrozole 2.5 mg daily versus the combination of placebo plus letrozole 2.5 mg daily in postmenopausal women with metastatic or locally recurrent hormone receptor positive breast cancer based on Progression Free Survival (PFS). |
|
E.2.2 | Secondary objectives of the trial |
To focus the demonstration of superior efficacy of the combination therapy on a subpopulation of patients thought to specifically benefit from the combination. This objective is dependent on the identification of a subpopulation having greater benefit from the combination treatment, based on intratumoral molecular characteristics, independently of the data from this study, and prior to the first interim analysis. To compare the two treatment arms with regard to the following secondary endpoints: Time To Progression, overall response rate, overall survival, safety and • to correlate specific molecular characteristics of the tumor with clinical outcome of the therapy • to investigate relationships between PK parameters of RAD001 and clinical endpoints, when combined with letrozole. • to investigate whether the genetic characteristics inherent to the individual are predictive of response to treatment, susceptibility to adverse events or drug-drug interactions. |
|
E.2.3 | Trial contains a sub-study | Information not present in EudraCT |
E.3 | Principal inclusion criteria |
• Adult women (≥ 18 years of age) with metastatic or locally recurrent breast cancer, not amenable to treatment by surgery or radiotherapy • Patients whose tumors express at least one hormone receptor (ER or PgR), as confirmed in the central laboratory • Patients must be postmenopausal as defined by any of the following criteria: 1. Radiation induced menopause or surgical bilateral oophorectomy 2. Women with an intact uterus and ≥ 55 years of age or < 55 years of age without menses for the last 5 years or < 55 years of age and has not had menses for at least the last 12 months (but has had menses in the last 5 years) and has postmenopausal levels of FSH (according to the postmenopausal range of the individual laboratory, and performed at least four weeks after stopping HRT/oral contraceptives) 3. Women without an intact uterus and ≥ 55 years of age or < 55 years of age and postmenopausal levels of FSH (according to the postmenopausal range of the individual laboratory, and performed at least four weeks after stopping HRT/oral contraceptives) • Patients must have at least one measurable lesion (i.e. a lesion that can be accurately measured in at least one dimension with longest diameter ≥ 20 mm using conventional techniques or ≥10 mm with spiral CT scan (with minimum lesion size no less than double the slice thickness) - As the only exception regarding the requirement for at least one measurable lesion, patients with bone metastases as the sole site of disease can be included, provided they have at least 2 lytic bone lesions, detected by either X-Ray, CT scan or MRI. • Histological confirmation of breast cancer • Tumor tissue (archived or fresh biopsy) must be available prior to randomization for central analysis of: - estrogen-receptor (ER) and/or progesterone-receptor (PgR) status - molecular markers • An additional inclusion criterion, based on specific molecular markers, may be used for patient selection after the interim analysis, in accordance with the adaptive design of the protocol • For patients previously treated for metastatic disease there must be objective evidence of progression (according to RECIST) on the previous therapy within no more than three months prior to study entry. Progression must be documented in the patient files, including date and site. Progressive disease is defined as follows: - At least a 20% increase in the sum of the longest diameter of target lesions, taking as reference the smallest sum of longest diameter recorded since the treatment started or the appearance of one or more new lesions, OR - Appearance of one or more new lesions and/or unequivocal progression of existing non-target lesions. • Adequate bone marrow function as shown by: ANC ≥ 1.5 x 109/L, Platelets ≥ 100 x 109/L, Hb >9 g/dL • Adequate liver function as shown by: serum bilirubin ≤ 1.5 x ULN, absence of ascites and encephalopathy due to liver disease, INR < 1.7, ALT and AST ≤ 2.5x ULN ( ≤ 5x ULN in patients with liver metastases). • Renal function: serum creatinine ≤ 1.5 x ULN • Fasting serum cholesterol ≤ 300 mg/dl or 7.75 mmol/L and fasting triglycerides ≤ 2.5 x ULN. - In case one or both of these thresholds are exceeded, the patient can only be included after initiation of statin therapy. • Performance Status 0-2 on the WHO scale • Signed consent to participate in the study must be obtained from patients after they have been fully informed on the nature and potential risks by the investigator with the aid of written information. • Life expectancy of at least three months. |
|
E.4 | Principal exclusion criteria |
• Inflammatory breast cancer (histologically proven). • Patients with only non-measurable lesions other than bone metastasis (e.g. pleural effusion, ascites etc.) • Prior systemic endocrine treatment for advanced breast cancer (i.e. metastatic or locally recurrent breast cancer, not amenable to treatment by surgery or radiotherapy). Patients who had bilateral oophorectomy as the only antiendocrine intervention for advanced breast cancer can be included. • More than one prior regimen of chemotherapy for advanced breast cancer. • patients whose tumor relapsed during or within 12 months from the end of an adjuvant or neo-adjuvant therapy with an AI • Any neoadjuvant/adjuvant therapy with tamoxifen alone or in combination with chemotherapy within the past 4 weeks from randomization. • CNS metastases, bilateral diffuse lymphangitis carcinomatosa of the lung (>50% of lung involvement), evidence of metastases estimated as more than a third of the liver as defined by sonogram and/or CT scan. • Patients in whom localized radiotherapy (for analgesic purposes) is considered an actual requirement (inclusion should be delayed until radiation therapy has been completed and the patient’s condition stabilized). • History of other malignancies with exception of: - in-situ carcinoma of the cervix or non-melanomatous skin cancer which have received curative therapy - cancer treated ≥5 years previously and considered as cured. • Patients with a known history of HIV seropositivity. • Patients with other concurrent severe and/or uncontrolled medical conditions which could compromise participation in the study (e.g. uncontrolled diabetes, uncontrolled infection, ongoing chronic infection likely to worsen with inhibition of cellular immunity (e.g. chronic viral hepatitis, tuberculosis), uncontrolled hypertension, congestive cardiac failure, ventricular arrhythmias, active ischemic heart disease, myocardial infarction within six months, active bleeding diathesis) • Patients with ≥ grade 3 laboratory abnormalities (excluding hyperlipidemia) • Known hypersensitivity to everolimus or sirolimus (rapamycin), to letrozole or lactose (contained in formulations of RAD001 and Femara) • Patients with a history of noncompliance to medical regimens. • Patients unwilling to or unable to comply with the protocol. • Patients who received any other investigational drugs within the preceding 30 days. • Patients being treated with drugs recognized as being strong inhibitors or inducers of the isoenzyme CYP3A (Rifabutin, Rifampicin, Clarithromycin, Ketoconazole, Itroconazole, Voriconazole, Ritinavir, Telithromycin) within the last 5 days from randomization |
|
E.5 End points |
E.5.1 | Primary end point(s) |
Progression Free Survival |
|
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 | Yes |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
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) | Yes |
E.8.2.2 | Placebo | Yes |
E.8.2.3 | Other | No |
E.8.3 |
The trial involves single site in the Member State concerned
| Information not present in EudraCT |
E.8.4 | The trial involves multiple sites in the Member State concerned | Information not present in EudraCT |
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 |
|
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
|
|
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 | |
E.8.9.1 | In the Member State concerned days | |
E.8.9.2 | In all countries concerned by the trial years | 4 |