E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
estrogen receptor positive metastatic breast cancer patients eligible for palbociclib plus letrozole treatment |
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E.1.1.1 | Medical condition in easily understood language |
estrogen receptor positive metastatic breast cancer patients eligible for palbociclib plus letrozole treatment |
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E.1.1.2 | Therapeutic area | Diseases [C] - Cancer [C04] |
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 evaluate in a feasibility study whether low uptake on FES-PET at baseline is related to non response to letrozole plus palbociclib treatment. |
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E.2.2 | Secondary objectives of the trial |
To assess heterogeneity in tumor ER expression To relate circulating tumor DNA analysis at baseline to all other molecular, imaging and clinical follow-up data Predictive value of change in FDG uptake per lesion (baseline compared to 2 week scan) for response after 8 weeks (measured by CT or FDG PET in case of bone lesions). Per patient analysis of response on CT related to change on FDG PET (baseline-2 weeks) and FES uptake at baseline
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
In order to be eligible to participate in this study, a subject must meet all of the following criteria: 1. Patients with ER positive (i.e. >1% staining), HER2 negative metastatic breast cancer (preferably assessment on fresh metastasis biopsy, alternatively archival metastasis biopsy) 2. Post-menopausal status defined as: a. Age ≥60 years b. Previous bilateral oophorectomy c. Age <60 years and amenorrhea for >12 months in the absence of interfering hormonal therapies (such as LH-RH agonists and ER-antagonists d. Age <60 years using ER antagonists should have amenorrhea for >12 months and FSH >24U/L and LH>14U/L 3. Adequate bone marrow and organ function defined as follows: a. Absolute neutrophil count > 1.5 x 109/L b. Platelet count >100 x 109/L c. White blood cell count >3 x 109/L d. AST and ALT <3.0 x upper limit of normal (ULN) or <5 xULN in case of known liver metastases. e. Alkaline phosphatase <2.5 x ULN f. Total serum bilirubin < ULN or total bilirubin <3.0 x ULN with direct bilirubin within normal range in patients with Gilbert’s Syndrome g. Creatinine clearance >30mL/min h. Lipase/amylase <1/5 x ULN i. Protrombin time, partial tromboplastin time and INR <1.5 x ULN 4. ECOG performance 0-2 5. Signed written informed consent 6. Able to comply with the protocol 7. Age ≥18 years |
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E.4 | Principal exclusion criteria |
A potential subject who meets any of the following criteria will be excluded from participation in this study: 1. Life expectancy < 3 months 2. Evidence of central nervous system metastases 3. Presence of life-threatening visceral metastases 4. Prior use of CDK4/6 inhibitor 5. Use of estrogen receptor ligands including estrogens, fulvestrant or tamoxifen <6 weeks before study entry. 6. Use of other anticancer therapy < 2 weeks prior to start with palbociclib 7. Concurrent malignancy 8. Active cardiac disease or a history of cardiac dysfunction |
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E.5 End points |
E.5.1 | Primary end point(s) |
The relation between low uptake on FES-PET to response per lesion, as measured by RECIST 1.1 criteria in case of measurable disease. In case of non-measurable bone lesions, progression is defined as an increase in SUV on FDG-PET per lesion compared to baseline. |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
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E.5.2 | Secondary end point(s) |
To assess heterogeneity in tumor ER expression To relate circulating tumor DNA analysis at baseline to all other molecular, imaging and clinical follow-up data Predictive value of change in FDG uptake per lesion (baseline compared to 2 week scan) for response after 8 weeks (measured by CT or FDG PET in case of bone lesions). Per patient analysis of response on CT related to change on FDG PET (baseline-2 weeks) and FES uptake at baseline. |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
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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 | No |
E.6.4 | Safety | No |
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 | 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) | Yes |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
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 | Yes |
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) | No |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | No |
E.8.3 |
The trial involves single site in the Member State concerned
| Yes |
E.8.4 | The trial involves multiple sites in the Member State concerned | No |
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 | No |
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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last visit of last subject |
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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 | |
E.8.9.1 | In the Member State concerned days | |