E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
postmenopausal women with an early ER-positive breast cancer and not previously treated with an endocrine agent or hormone replacement therapy , with an intact uterus and clearly measurable thin endometrium uterus. |
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E.1.1.1 | Medical condition in easily understood language |
hormone sensitive breast 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 | 14.0 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10006188 |
E.1.2 | Term | Breast cancer female NOS |
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 |
relation between metabolites concentrations and change in endometrial thickness or uterine volume (relation with oestrogen activity of the endometrium).
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E.2.2 | Secondary objectives of the trial |
tolerabiliy of tamoxifen
predictive value of the tamoxifen activity score
HRQoL Questionnary
biochemical changes (FSH and SHBG)
vaginal bleeding
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
- Female > 18 years of age
- Written and voluntary informed consent understood signed and dated
- Histologically or cytologically confirmed measurable invasive adenocarcinoma of the breast, amenable to curative therapy.
- Patients must be postmenopausal as defined by criteria in appendix 1.
- Breast cancer should be considered as oestrogen receptor positive by the clinician using immunohistochemistry readings as is standard procedure for local pathologist
- Prior endocrine tamoxifen therapy is not allowed
- Patients are not previously treated with an endocrine agent or hormone replacement therapy.
- Prior chemotherapy and radiotherapy is allowed
- Adequate renal and liver function
Serum creatinine and serum bilirubine ≤ 1.5 X ULN
Serum ALT and AST ≤ 2.5 X ULN (or ≤ 5 in case of liver metastases)
- Serum calcium should be ≤ 11,6 mg/dl
- ECOG performance status 0,1,2 (appendix 2)
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E.4 | Principal exclusion criteria |
- Male
- Life threatening disease requiring a quick response (eg, extensive hepatic or pulmonary involvement)
- Use of any endocrine treatment or hormone replacement therapy.
- Contra indication for tamoxifen: history of DVT/vaginal bleeding of unknown origin
- Dementia
- History of other malignancy that may interfere with at least 6 months of tamoxifen therapy
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E.5 End points |
E.5.1 | Primary end point(s) |
metabolite concentration after 6 months
change in endometrial thickness or uterine volume
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
6 months after start with tamoxifen |
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E.5.2 | Secondary end point(s) |
FSH and SHBG concentration at 6 months
single nucleotide polymorphisms in genes important for the metabolisation of tamoxifen |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
6 months after start with tamoxifen |
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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 | Yes |
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 | No |
E.8.1.1 | Randomised | No |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | No |
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) | Information not present in EudraCT |
E.8.2.2 | Placebo | Information not present in EudraCT |
E.8.2.3 | Other | Information not present in EudraCT |
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 | 18 |
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
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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 | 3 |
E.8.9.1 | In the Member State concerned months | 6 |
E.8.9.1 | In the Member State concerned days | 0 |
E.8.9.2 | In all countries concerned by the trial years | 0 |
E.8.9.2 | In all countries concerned by the trial months | 0 |
E.8.9.2 | In all countries concerned by the trial days | 0 |