E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Advanced Oesophago-gastric cancer |
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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 the anti-tumour activity of olaparib in advanced oesophageal, gastro-oesophageal junction and gastric cancer. |
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E.2.2 | Secondary objectives of the trial |
- To evaluate the safety and tolerability of olaparib. - To assess further efficacy measures; objective response rate, duration of response, overall survival, progression free survival and time to radiological progression - To perform translational research analysis that may identify predictive biomarkers for future therapies. |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
• Locally advanced or metastatic oesophageal, gastro-oesophageal junction or gastric adenocarcinoma that has progressed during or within 6 months of first or subsequent line treatment • Patients with HER2-positive oesophageal, gastro-oesophageal, or gastric adenocarcinoma must have received previous treatment with trastuzumab • Male and female patients ≥18 years of age • Availability of tissue sample (resection or biopsy) confirming oesophageal, gastro-oesophageal junction, or gastric adenocarcinoma. If the patient does not have prior histological diagnosis, then the planned baseline fresh tumour biopsy may be used for both the purpose of confirming the histological diagnosis and subsequent biomarker analysis. All patients must be willing to have a fresh tumour biopsy to obtain tumour tissue for biomarker analysis at baseline and on progression • Disease amenable to safe biopsy • At least one lesion, not previously irradiated, that can be accurately measured as per RECIST criteria 1.1 • Able to give informed consent • Adequate organ and bone marrow function measured within 28 days prior to administration of study treatment as defined below: • Hb 10.0 g/dL independent of blood transfusions for 28 days • Absolute neutrophil count (ANC) 1.5 x 109/L • Platelet count ≥ 100 x 109/L • INR < 1.5 • Total bilirubin ≤ 1.5 x institutional upper limit of normal (ULN) • AST/ ALT ≤ 2.5 x institutional ULN (unless liver metastases are present in which case it must be ≤ 5x ULN) • Creatinine clearance >51 mL/min for patients with creatinine levels above institutional normal. • Albumin >33 g/L • WHO ECOG performance status 0-1 • Life expectancy of 16 weeks or more • Evidence of non-childbearing potential (i.e. negative urine or serum pregnancy test within 28 days of study treatment and confirmed prior to treatment on day 1) or postmenopausal status • Patient is willing and able to comply with the protocol for the duration of the study including having examinations, undergoing treatment, and attending scheduled visits (including follow up) • Patients of child bearing potential and their partners, who are sexually active, must agree to the use of TWO highly effective forms of contraception in combination throughout their participation in the study and for at least 1 month after the last dose of study drug. For example, condom with spermicide and oral contraceptive/hormonal therapy or condom with spermicide and placement of an intra-uterine device. (See Appendix A for acceptable forms of contraception)
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E.4 | Principal exclusion criteria |
• Any previous treatment with a PARP inhibitor, including olaparib • Any second primary cancer (except adequately treated non-melanoma skin cancer, curatively treated cervical carcinoma-in-situ and curatively treated other solid tumours with no evidence of disease for 5 years or more) • Patients receiving any systemic chemotherapy, radiotherapy (except for palliative reasons) or investigational product within 4 weeks from the last dose prior to starting treatment (or a longer period depending on the defined characteristics of the agents used). A stable dose of bisphosphonates is permitted for bone metastases before and during the study as long as they were started at least 4 weeks prior to starting treatment • Clinically significant heart disease such as uncontrolled symptomatic arrhythmias, congestive heart failure, or myocardial infarction within the previous 3 months of screening, or any Class 3 (moderate) or Class 4 (severe) cardiac disease as defined by the New York Heart Association Functional Classification • Interstitial pneumonia or symptomatic fibrosis of the lungs • Active brain or leptomeningeal metastases • Major surgery within 2 weeks of starting study treatment and patients must have recovered from any previous major surgery • Pregnant and breastfeeding women • Patients considered a poor medical risk due to a serious uncontrolled medical disorder, non-malignant systemic disease or active uncontrolled infection. • Patients unable to swallow orally administered medication and patients with gastrointestinal disorders likely to interfere with study medication absorption • Persistent toxicities (of CTCAE grade 2 or above) with the exception of alopecia, caused by previous cancer therapy • Immunocompromised patients e.g. patients who are known to be serologically positive for human immunodeficiency virus (HIV) • Patients with known active hepatic disease (i.e. Hepatitis B or C) • Patients with intestinal obstruction or patients with CTCAE grade ≥ 3 upper GI bleeding within 4 weeks of study entry • Concomitant use of known strong or moderate CYP3A inhibitors. The required washout period prior to starting olaparib is 2 weeks. (See Section 11.6.5 regarding the use of CYP3A inhibitors). • Concomitant use of known strong or moderate CYP3A inducers. The required washout period prior to starting study treatment is 5 weeks for enzalutamide or phenobarbital and 3 weeks for other agents (See Section 12.6.5 regarding the use of CYP3A inducers) • Resting ECG with QTc of over 500 msec on 2 or more time points within a 24 hour period or a family history of long QT syndrome. • Patients with myelodysplastic syndrome (MDS)/acute myeloid leukaemia (AML) or features suggestive of MDS/AML • Patients with known hypersensitivity to olaparib or any of the excipients of the products • Vaccinated with live, attenuated vaccines within 4 weeks of enrolment • Previous allogenic bone marrow transplant or double umbilical cord blood transplantation (dUBCT)
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E.5 End points |
E.5.1 | Primary end point(s) |
The primary endpoint is disease control rate (DCR) defined as stable disease, partial response or complete response according to RECIST 1.1 criteria 8 weeks from initiation of study drug |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
8 weeks from initiation of study drug |
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E.5.2 | Secondary end point(s) |
• Objective response rate (ORR) will be defined in the EvP as complete response or partial response at 8 weeks according to RECIST 1.1. The objective response rate will be presented along with its exact two-sided 95% confidence interval. • Time to radiological progression (TTP) will be defined in the EvP as time from initiation of study drug to radiological tumour progression (PD according to RECIST 1.1 criteria). Death from cancer or any other cause without prior radiological evidence of progression will not count as an event. If no event exists, then time to radiological progression will be censored at the last scheduled disease assessment on study or date of death whichever occurs earlier. • Progression free survival (PFS) will be defined in the ITT population as time from initiation of study drug until radiological progression, unequivocal clinical progression or death. If no event exists, then PFS will be censored at the last scheduled disease assessment on study. • Overall survival (OS) will be defined in the ITT population as time from initiation of study drug to date of death. Survival time of living patients will be censored on the last date a patient is known to be alive or lost to follow-up.
Duration of response (DoR) defined in the EvP as time from 1st documented tumour response (CR or PR, RECIST 1.1) to disease progression (PD, RECIST 1.1). Responding patients alive and progression free at time of analysis will be censored at date of last follow-up.
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
For TTP, PFS, OS, and DoR, median survival and fixed time point (at 6m, 12m) survival rates will be estimated using the Kaplan-Meier method, and survival curves will be generated. As a sensitivity analysis we will re-analyse DCR, ORR, TTP and DoR on the PP population. |
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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 | 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 | 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 | 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) | 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
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
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 | Yes |
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 study end date is deemed to be the date of last data capture. Patient follow up will continue until death to evaluate the survival endpoint of 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 | 0 |
E.8.9.1 | In the Member State concerned days | 1 |
E.8.9.2 | In all countries concerned by the trial years | 3 |
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 | 1 |