E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Type 1 hereditary haemochromatosis is associated with homozygous inheritance of the C282Y mutation in the HFE gene. The phenotype is characterised by increased serum iron levels, tissue iron accumulation and may result in liver fibrosis, cirrhosis, and liver carcinomas. Treatment initially involves removal of one unit of blood per week to remove body iron burden, then removal of one unit of blood 2-6 times per year to prevent the re-accumualtion of iron stores.
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MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 8.1 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10057873 |
E.1.2 | Term | Hereditary haemochromatosis |
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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 |
The main objective of this study is to determine whether a milk thistle extract (Legalon), taken with a meal containing non-haem iron, leads to a reduction in serum iron increase following the meal. |
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E.2.2 | Secondary objectives of the trial |
The secondary objective of this study is to determine the effect of Legalon on serum iron increase following the meal, compared with a black tea beverage. |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
(i) Patients will be homozygous for the C282Y mutation of the HFE gene (the genotype associated with type 1 hereditary haemochromatosis), and have phenotypic haemochromatosis (identified by raised serum iron levels on diagnosis), as this is the particular group of interest which may benefit from interventions to reduce dietary iron absorption.
(ii) ALL patients will be fully treated (i.e. undergoing phlebotomy to maintain iron stores within the normal range, following on from the removal of primary iron burden at diagnosis), in order to reduce variability in the data as iron absorption varies between fully treated and untreated/newly diagnosed patients.
(iii) Patients will be adults (age 18+), as Type 1 hereditary haemochromatosis presents in adulthood. |
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E.4 | Principal exclusion criteria |
(i) Patients with allergy to any foods or medicines will be excluded from participating for their own safety.
(ii) Patients with gastrointestinal diseases which alter gut motility, gut permeability or gastric pH (ulcerative colitis, Crohn's disease, coeliac disease, gastric ulceration) will also be excluded from participating as these disorders affect gastrointestinal function and, thus, may result in altered iron absorption and confound the results of the study.
(iii) Patients with diabetes will be excluded from taking part in the study because of the requirement to fast prior to ingestion of the test meals. |
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E.5 End points |
E.5.1 | Primary end point(s) |
The primary end point of the trial is the increase in serum iron (as an estimate of iron absorption) after ingestion of a meal without Legalon / with Legalon / with tea. |
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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 | Yes |
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 | Information not present in EudraCT |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | Yes |
E.6.13.1 | Other scope of the trial description |
Investigate alternative use (iron chelating properties) of a milk thistle extract |
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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 | Yes |
E.7.1.3.1 | Other trial type description |
To investigate other benefits of a commercially available milk thistle extract - Phase 4 trial |
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E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
E.7.4 | Therapeutic use (Phase IV) | Yes |
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 | No |
E.8.1.6 | Cross over | Yes |
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.8.3 |
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 | 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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The end of the trial is defined as the point when the 10th (final) patient has undertaken the last of 3 iron absorption tests. |
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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 | 0 |
E.8.9.1 | In the Member State concerned months | 3 |
E.8.9.1 | In the Member State concerned days | |
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 |