E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Pantothenate Kinase-Associated Neurodegeneration (PKAN) |
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E.1.1.1 | Medical condition in easily understood language |
Neurodegeneration with brain iron accumulation |
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E.1.1.2 | Therapeutic area | Diseases [C] - Nervous System Diseases [C10] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 16.0 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10053643 |
E.1.2 | Term | Neurodegenerative disorder |
E.1.2 | System Organ Class | 10029205 - Nervous system disorders |
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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 Co Primary objectives 1- To evaluate the change in severity of dystonia (BAD scale) in patients with PKAN treated with deferiprone for 18 months compared to placebo. 2- To evaluate the patient's global impression of condition's improvement in patients treated with deferiprone for 18 months compared to placebo (PGI-I)
The study will be considered positive if both co-primary endpoints reach statistical significance. |
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E.2.2 | Secondary objectives of the trial |
The secondary objectives are: 1- To evaluate the effect of deferiprone compared to placebo in the change in globus pallidus iron levels (MRI) (subset of patients); 2- To evaluate the effect of deferiprone compared to placebo on the change in motor symptoms (UPDRS); 3- To evaluate the effect of deferiprone compared to placebo on a measure of functional independence (WeeFIM or FIM); 4- To evaluate the effect of deferiprone compared to placebo on quality of life (PedsQL); 5- To evaluate the effect of deferiprone compared to placebo on the patient's quality of sleep (PSQI); 6- To evaluate the pharmacokinetics of deferiprone and its 3-Ο- glucuronide metabolite (subset of patients); 7- To evaluate the safety and tolerability of deferiprone in patients with PKAN. |
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E.2.3 | Trial contains a sub-study | Yes |
E.2.3.1 | Full title, date and version of each sub-study and their related objectives |
Patients will have the option to participate in PK sub study in addition to main study. Patients and patients legal representative if applicable will be asked to read and sign an additional consent before taking part. The PK study is to examine the steady state pharmacokinetic profile of deferiprone and deferiprone 3-O-glucuronide following administration of twice daily deferiprone oral dose. |
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E.3 | Principal inclusion criteria |
1.Males and females 4 years of age and older at screening visit;
2.Patients must have PKAN, confirmed by genetic testing;
3.Patients having a BAD total score > = 3 at the screening visit;
4.Patients who have Deep Brain Stimulation (DBS) systems or baclofen pumps in place will be eligible for the study, but they must have had a stable setting for at least 2 months prior to the screening visit and stimulation parameters / pump settings must remain stable for the duration of the trial. Enrollment of non-DBS patients will be given priority in order to ensure the majority can undergo imaging;
5. Potentially sexually active female patients of childbearing potential must have a negative pregnancy test result at Screening Visit (if applicable; in cases where the Investigator determines there is no reasonable risk of pregnancy because of significant incapacity, pregnancy testing will not be performed);
6.Fertile potentially sexually active males must use an effective method of contraception or must confirm partner’s use of effective contraception;
7.Informed consent/assent obtained before any study-related activities are undertaken;
8.Ability and willingness to adhere to the protocol including appointments and evaluation schedule.
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E.4 | Principal exclusion criteria |
1.Evidence of iron deficiency defined by Fe:TIBC ratio <15%, or serum ferritin < 12 ng/mL;
2.Treatment with deferiprone in the past 12 months;
3.Previous failure of treatment with deferiprone, or previous discontinuation of treatment with deferiprone due to adverse events;
4.Evidence of abnormal liver or renal function (serum liver enzyme level(s) > 3 times upper limit of normal at screening) or abnormal creatinine levels at screening visit;
5.Disorders associated with neutropenia (absolute neutrophil count (ANC) < 1.5 x 109/L) or thrombocytopenia (platelet count < 50 x 109/L) in the 12 months preceding the initiation of the study medication. Exception: for patients whose neutropenia was attributed by the treating physician to episodes of infection or to drugs associated with a decline in the neutrophil count and in whom ANC has fully recovered at the screening visit;
6.Pregnant, breastfeeding, or planning to become pregnant during the study;
7.Initiation or discontinuation of treatment with baclofen, trihexyphenidyl, clonazepam, tizanidine within 30 days prior to baseline; and initiation or discontinuation of treatment with tetrabenazine within 90 days prior to baseline;
8. Treatment with an investigational drug within 30 days or 5 half-lives (whichever is longer) preceding the baseline;
9. Currently taking iron chelators;
10.Patients who, in the opinion of the physician, represent a high medical or psychological risk;
11. History of or active drug or alcohol use or dependence that, in the opinion of the site investigator, would interfere with adherence to study requirements;
12.Patients and patient's legal representative (if applicable) with a mental incapacity, unwillingness or language barriers precluding adequate understanding or co-operation.
13.Baclofen pump placement less than two months prior to the beginning of the study.
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E.5 End points |
E.5.1 | Primary end point(s) |
1) Change in the Barry-Albright Dystonia Scale (BAD) total score from baseline to Month 18 in patients treated with deferiprone compared to placebo, as assessed by central blinded evaluation of video-tapes;
2) Patient's Global Impression of Improvement (PGI-I) from baseline to Month 18 in patients treated with deferiprone compared to placebo.
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
Timepoints:
Baseline, 6m, 12m, 18m |
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E.5.2 | Secondary end point(s) |
1) Proportion of patients with improved or unchanged BAD scale total score between baseline and Month 18 (responder analysis);
2) Change from baseline to Month 18 in BAD scale score per body region (eyes, mouth, neck, trunk, each upper and lower extremity), as assessed by central blinded evaluation of video-tapes;
3) Proportion of patients showing an improvement on PGI-I at the Month 18 visit (responder analysis);
4) Change from baseline to Month 18 in globus pallidus iron levels as measured by MRI R2* (subset of patients without deep brain stimulators who can tolerate MRI scan);
5) Change from baseline to Month 18 in UPDRS Parts I, II, III and VI scores, respectively;
6) Change from baseline to Month 18 in global WeeFIM score (Or FIM for patients > 18 years);
7) Change from baseline to Month 18 in WeeFIM (or FIM for patients >18 years) score per item;
8) Change from baseline to Month 18 in quality of life (PedsQL);
9) Change from baseline to Month 18 in quality of sleep (PSQI).
Other secondary endpoints:
Safety Endpoints: (1) Frequency of Adverse Events (AEs); (2) Frequency of Serious Adverse Events (SAEs); (3) Discontinuation due to AEs; (4) Hematology assessments; (5) Blood clinical biochemistry assessments; (6) ECG.
Pharmacokinetic Endpoints: Steady state pharmacokinetics of deferiprone and its 3-O-glucuronide metabolite will be assessed in a subset of up to 24 patients over 12 hours. The following standard pharmacokinetic parameters will be derived from plasma concentrations of deferiprone: Cmax, Tmax, Cmin, AUCSS, CL/F, T1/2, Vd/F.
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
Timepoints: Secondary endpoints: Baseline, 6m, 12m, 18m; except Brain MRI: Baseline and 18m.
Safety endpoints: Physical exam: at Screening, Baseline, 1.5m, 3m, 6m, 12m, 18m. Hematology: at Screening,weekly after dosing starts. Biochemistry: at Screening, 1.5m, 3m, 6m, 12m, 18m. ECG: at Screening and 18m. Adverse events and SAEs: Baseline and at each telephone contant and study visits.
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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 | Yes |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | Yes |
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 | Yes |
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 | Yes |
E.8.2.3 | Other | No |
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
| 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 | 20 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 4 |
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 |
Germany |
Italy |
Poland |
United Kingdom |
United States |
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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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LVLS. Based on the total individual study duration of 18 months, the last patient will have their final study visit at month 34, followed by analysis and interpretation of the results. |
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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 | 0 |
E.8.9.1 | In the Member State concerned days | 0 |
E.8.9.2 | In all countries concerned by the trial years | 2 |
E.8.9.2 | In all countries concerned by the trial months | 8 |
E.8.9.2 | In all countries concerned by the trial days | 1 |