E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
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E.1.1.1 | Medical condition in easily understood language |
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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 | 18.1 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10034008 |
E.1.2 | Term | Parkinson's syndrome |
E.1.2 | System Organ Class | 100000004852 |
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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 assess the effect of q2 weekly intermittent bilateral intraputamenal GDNF infusions on OFF-state motor function at 9 months. |
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E.2.2 | Secondary objectives of the trial |
To assess the effect of intermittent bilateral intraputamenal GDNF infusions on ON-state motor function, motor complications, and ON- and OFF-state activities of daily living (ADL) at 9 months.
To assess the safety of intermittent bilateral intraputamenal GDNF infusions in a small pilot cohort of subjects and in the full study population. |
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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 |
An Extension Study to Assess the Safety and Efficacy of Intermittent Bilateral Intraputamenal Glial Cell Line-Derived Neurotrophic Factor (GDNF) Infusions Administered via Convection Enhanced Delivery (CED) in Subjects with Parkinson’s Disease.
Internal Reference No: 2797
Ethics Ref: 13/SW/0181
EudraCT Number: 2013-001881-40 |
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E.3 | Principal inclusion criteria |
Inclusion Criteria
1. Subjects diagnosed with idopathic PD according to the UK Brain Bank Criteria. Bilateral findings must be present at study entry.
2. Duration of PD symptoms 5 years, verified by subject’s medical records.
3. Age 35-75 years.
4. Presence of motor fluctuations. Subjects must have an average of at least 2.5 hours of Off-time per day on 3-day
fluctuation diaries completed during screening.
5. Ability to reliably distinguish motor states (ON without dyskinesias, ON with non-troublesome dyskinesias, ON with
troublesome dyskinesias and OFF) and accurately complete fluctuation diaries.
6. UPDRS motor score (part III) in a practically defined OFF-state between 25-45.
7. Hoehn and Yahr ≤ stage III in the OFF-state.
8. Responsiveness to levodopa (≥40% improvement in motor UPDRS [part III] following a levodopa challenge)
9. No change in anti-parkinsonian medication for 6 weeks before screening.
10. Females of childbearing potential must have a negative pregnancy test at study entry and be willing to use an approved (by the PI or designee) form of contraception until the end of the study.
11. Provision of informed consent.
Post-surgery Randomization Criteria
1. No relevant sequelae from catheter implantation such as clinically significant intracerebral trauma, haemorrhage, or infection.
2. Total distribution volume providing at least 50% volume coverage of a predefined volume of interest in each putamen (approximately 25% volume coverage of total putamen), as assessed by an independent review of an MRI scan taken within 2 hours post-infusion of diluent at the end of the healing period. |
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E.4 | Principal exclusion criteria |
1. Diagnosed with atypical parkinsonism or any known secondary parkinsonian syndrome including but not limited to
medication induced, toxic, vascular, post-traumatic or post-infectious parkinsonism, progressive supranuclear palsy,
multiple systems atrophy, or other neurodegenerative disorder associated with parkinsonism.
2. Signs or symptoms suggestive of atypical parkinsonian syndrome including supranuclear gaze palsy, early postural
instability and falls (within 3 years of disease onset), cerebellar signs, myoclonus, disproportionate antecollis,
extensor plantar responses, cortical sensory loss, emotional incontinence (pseudobulbar affect), severe bulbar
dysfunction (dysarthria, dysphonia or dysphagia) or respiratory symptoms such as stridor or inspiratory sighs.
3. Family history of more than 1 first-degree relative with PD.
4. Severe dyskinesias or severe tremor which could interfere with GDNF infusion.
5. Prior neurosurgical treatment for PD, including previous treatment with GDNF or deep brain stimulation.
6. Significant neurological disorder other than PD including clinically significant head trauma, cerebrovascular disease,
CSF shunt or other implanted CNS device.
7. Presence of significant depression as defined as a Beck Depression Inventory (BDI) score ≥ 20.
8. Current or past history of psychosis requiring therapy. The presence of benign hallucinosis is not exclusionary.
9. Presence or history of clinically significant impulse control disorder or presence or history of dopamine dysregulation syndrome.
10. MoCA score < 24.
11. Use within 3 months of planned catheter insertion of concomitant medications known to affect PD symptoms other
than prescribed PD therapy including but not limited to neuroleptics or other central dopamine receptor blockers.
12. Any medical condition which might impair outcome measure assessments or safety measures including ability to
undergo MRI scanning.
13. Screening MRI demonstrating any abnormality which would suggest an alternative cause for subject’s parkinsonism.
14. Any medical condition that would put the subject at undue risk from surgical treatment or chronic implants including
but not limited to bleeding disorders, chronic infections, or immunosuppressive illness.
15. History within the last 5 years of cancer with the exception of basal cell carcinoma of the skin.
16. History of drug or alcohol abuse within 2 years of planned catheter insertion.
17. Use of any investigational drug or device within 90 days of planned catheter insertion.
18. Active breastfeeding. |
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E.5 End points |
E.5.1 | Primary end point(s) |
The primary endpoint of the study is the percentage change from baseline in the practically defined OFF-state Unified Parkinson’s Disease Rating Scale (UPDRS) motor score (part III) after 9 months of double-blind treatment |
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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) |
Efficacy
1. Percentage change from baseline in UPDRS motor score (part III) in the ON-state (following a levodopa challenge) after 9 months of double-blind treatment.
2. Percentage change from baseline in UPDRS ADL score (part II) in the OFF state and in the ON state after 9 months of double-blind treatment.
3. Percentage change from baseline in UPDRS total score (sum of motor + ADL scores) in the OFF state and in the ON state after 9 months of double-blind treatment.
4. Percentage change from baseline in UPDRS mentation, behaviour, and mood score (part I) after 9 months of double-blind treatment.
5. Percentage change from baseline in UPDRS complications of therapy score (part IV) after 9 months of double-blind treatment.
6. Change from baseline in PD diary ratings after 9 months of double-blind treatment; i.e., total OFF-time per day, total good quality ON-time per day(ON without dyskinesias or ON with non-troublesome dyskinesias) and ON-time per day with troublesome dyskinesias.
Safety
1. Frequency of device-related adverse events (AEs) during the study period
2. Frequency of treatment-emergent AEs (all treatment-emergent AEs and treatment-emergent AEs related to study drug) during the study period.
3. Frequency of dyskinesias
4. Falls, adverse changes in mood, and impulsivity reported as treatment-emergent AEs during the study period (AEs of special interest).
5. Change from baseline in the Questionnaire for Impulsive-Compulsive Disorders in Parkinson’s Disease (QUIP) every 8 weeks.
6. Change from baseline in the Montreal Cognitive Assessment (MoCA) after 9 months of double-blind treatment.
7. Change from baseline in the Mattis Dementia Rating Scale (MDRS) after 9 months post of double-blind treatment.
8. Adverse changes in MRI findings as captured by AE reporting.
9. Frequency of subjects with anti-GDNF antibodies during the study.
10. Results of routine laboratory blood tests (haematology, serum chemistry) and urinalysis performed at baseline and at intervals during the trial.
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
For each as specified above
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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) | 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 | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | No |
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
| 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 | 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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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 | 3 |
E.8.9.1 | In the Member State concerned days | 0 |