E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
chemoprevention of breast cancer |
|
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 9.1 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10006187 |
E.1.2 | Term | Breast cancer |
|
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 endpoint of the proposed trial is to assess if tamoxifen at a low dose, 5mg/day, reduces the incidence of invasive breast cancer and ductal carcinoma in situ (DIN 1c, 2, 3) of the breast, in women operated on for lobular intraepithelial neoplasia (LIN1, 2 and 3) or ER-positive ductal intraepithelial neoplasia (DIN1b, DIN 2, DIN3, 1a excluded) of the breast. |
|
E.2.2 | Secondary objectives of the trial |
- To evaluate the incidence of other non-invasive breast disorders (i.e., LIN, ductal atypical hyperplasia), endometrial cancer, clinical bone fractures, cardiovascular events, venous thromboembolic events, clinically manifest cataract and overall mortality. - To assess intermediate biomarkers of efficacy and safety yearly: mammographic percent density, circulating IGF-I levels, endometrial thickness and genetic polimorphisms related to breast cancer risk such as COMT genes (estrogens inactivation process), MTHFR (folate metabolism), GH, IGFBP-3 and Androgen Receptor (related to breast cancer risk through activity and circulating levels of hormones); - In order to assess whether the blood concentrations of drug and metabolites could explain the biomarker level changes and to verify treatment adherence, the blood concentrations of tamoxifen and its main metabolites will be measured in a study subgroup. |
|
E.2.3 | Trial contains a sub-study | Yes |
E.2.3.1 | Full title, date and version of each sub-study and their related objectives |
FARMACOGENETICA FARMACOCINETICA/FARMACODINAMICA
|
|
E.3 | Principal inclusion criteria |
- Women of age < 75 years - Women operated on for ER-positive lobular (LIN1, 2 and 3) or ductal (DIN 1-3, excluded DIN 1a) intraepithelial neoplasia. Both incident (diagnosis within 12 months) and prevalent cases (diagnosis between previous 12 and 60 months) will be included, upon stratification. - Written informed consent. |
|
E.4 | Principal exclusion criteria |
- Any type of malignancy, with the exclusion of CIN and non-melanoma skin cancer; - Active proliferative disorders of the endometrium such as atypical hyperplasia, history of active endometriosis, unresected polyps; - Alterations of metabolic, liver, renal and cardiac grade 2 function (NCI criteria grade 2 or higher); - Any type of retinal disorders or severe cataract; - Presence of significant risk factors for venous events, including immobilization within the last 3 months for longer than 2 weeks following surgery or trauma, deep venous thrombophlebitis or other significant VTE (pulmonary embolism, stroke, etc.); - Use of tamoxifen, raloxifene or other SERMs within the last 4 weeks; - Anticoagulant therapy in progress (heparin or dicoumarol); - Active infections; - Severe psychiatric disorders or inability to comply to the protocol procedures; |
|
E.5 End points |
E.5.1 | Primary end point(s) |
Incidence of invasive breast cancer |
|
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 | 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.8.3 |
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 | 10 |
E.8.5 | The trial involves multiple Member States | No |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | No |
E.8.6.2 | Trial being conducted completely outside of the EEA | Information not present in EudraCT |
E.8.7 | Trial has a data monitoring committee | No |
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 | 6 |
E.8.9.1 | In the Member State concerned months | 0 |
E.8.9.1 | In the Member State concerned days | |
E.8.9.2 | In all countries concerned by the trial years | 6 |
E.8.9.2 | In all countries concerned by the trial months | 0 |