E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Hereditary hemorrhagic telangiectasia (HHT) |
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E.1.1.1 | Medical condition in easily understood language |
Osler–Weber–Rendu syndrome |
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E.1.1.2 | Therapeutic area | Diseases [C] - Congenital, Hereditary, and Neonatal Diseases and Abnormalities [C16] |
MedDRA Classification |
E.1.3 | Condition being studied is a rare disease | Yes |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
To investigate the effectiveness of somatostatin analogues in decreasing the transfusion requirements in patients with HHT and GI bleeding who are refractory to endoscopic therapy. |
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E.2.2 | Secondary objectives of the trial |
Investigate the effectiveness of octreotide on: decreasing the endoscopic treatment frequency, increasing the quality of life, decreasing fatigue and epistaxis symptoms and costeffectiveness. |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
-Patients older than 18 years with written informed consent. -Diagnosis of HHT: either confirmed by genetic testing or the Curaçao criteria (definite diagnosis) (7). -Presence of endoscopic proven GI AVM manifestations / telangiectasias confirmed within the last 12 months (upper and/or lower endoscopy and/or capsule endoscopy). -Endoscopic refractory: at least 1 endoscopic APC, laser, or other endoscopic treatment modality performed in the past 5 years. -Diagnosis of iron deficiency anemia (IDA). IDA is defined as: o At least one serum ferritin below < 30 ug/l within the last 6 months requiring iron infusion above or equal to 1 g and/or o Hemoglobin below 5.6 mmol/l (9.0 g/dl) or are in need of transfusions due to anemia related symptoms within the last 6 months and o The absence of other common causes of anemia (Vitamin B12 and/or folate deficiency in patients with macrocytic anemia and bone marrow disorders in patients with pancytopenia) -Substantial transfusion dependency: at least 4 blood units and / or intravenous iron in the 6 months prior to study inclusion. |
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E.4 | Principal exclusion criteria |
-Liver cirrhosis Child-Pugh C, - Insulinoma, - Uncontrolled diabetes mellitus as defined by HbA1c >64 mmol/ml, despite adequate therapy, - Juvenile Polyposis Syndrome - Symptomatic cholecystolithiasis (possible side-effect octreotide) -Chronic or acute pancreatitis -Bradycardia (heart rate below 50)* -Hypersensitivity to the active ingredient (octreotide) or to auxiliary materials of the study medication -Severe disease/comorbidities with a life expectancy < 1 year -Use of chemotherapy and / or ciclosporin -Pregnancy or nursing women or women who have a pregnancy wish during the study period. -Women of childbearing potential who do not have a confirmed menstrual period and a negative, highly sensitive urine or serum pregnancy test < 7 days before inclusion -Women of childbearing potential who do not use a highly effective contraceptive measure (according to section 4.1 of the Recommendations related to contraception and pregnancy testing in clinical trials of the Heads of Medicines Agencies (HMA)) or refuse to maintain this measure during the entire treatment- and relevant systemic exposure period.(25) -Women of childbearing potential who refuse to undergo additional pregnancy testing during the treatment period -Use of other anti-angiogenic drug treatment (thalidomide and/or bevacizumab) -Use of hormonal (estrogen) therapy and/or antifibrinolytic therapy (tranexamic acid) to treat anemia due to telangiectasia with sufficient effect. However, when patients are red blood cell transfusion or iron infusion dependent despite these treatment options and are naïve to octreotide treatment, patients are still eligible for inclusion. |
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E.5 End points |
E.5.1 | Primary end point(s) |
'successful response', defined as a decrease of ≥50% in the amount of units intravenous iron and/or blood transfusions given |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
26 weeks prior to study inclusion and during the treatment study period (26 weeks). |
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E.5.2 | Secondary end point(s) |
The percentual or mean/median difference between the half year prior to inclusion and the treatment period of a half year between the treatment and observational arm in: - blood and intravenous iron requirements - PROM´s: quality of life (SF-36, EQ-5D), level of fatigue (multidimensional fatigue inventory (MFI)-20), epistaxis severity (ESS tool), and patient satisfaction - hemoglobin and ferritin levels - number of endoscopic treatments - cost-effectiveness (see economic evaluation) - Safety: All adverse events occurring during the study will be recorded in the patient's medical records. |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
26 weeks prior to study inclusion and during the treatment study period (26 weeks). |
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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 | Yes |
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) | 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 | Yes |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
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 | No |
E.8.2.3 | Other | Yes |
E.8.2.3.1 | Comparator description |
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E.8.2.4 | Number of treatment arms in the trial | 2 |
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 | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 6 |
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 | No |
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 |
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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
|
The trial is ended when all patients have had their last trial visit. |
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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 | 8 |
E.8.9.1 | In the Member State concerned days | |
E.8.9.2 | In all countries concerned by the trial years | 3 |