E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
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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 |
The primary efficacy objective of this trial is to evaluate the efficacy of a range of preladenant doses compared with placebo in subjects with early Parkinson's disease as measured by the sum of UPDRS Parts 2 and 3 scores. The primary safety objective of this trial is to evaluate the safety and tolerability of preladenant compared to placebo in subjects with early PD. |
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E.2.2 | Secondary objectives of the trial |
The key secondary efficacy objective of this trial is to evaluate the efficacy of a range of preladenant doses compared to placebo in subjects with early PD as measured by the proportion of responders and by the UPDRS Part 2 scores. |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
Subjects with a diagnosis of idiopathic PD for less than 5 years. a. Subject should have bradykinesia and at least one of the following symptoms: i. Muscular rigidity ii. Resting tremor (4 to 6 Hz) iii. Postural instability unrelated to primary visual, cerebellar, vestibular, or proprioceptive dysfunction b. If resting tremor is not present at screening, the rigidity and/or bradykinesia must be asymmetric. • Subject who is receiving amantadine and/or anticholinergics must have been on a stable regimen of treatment for at least the 4 weeks before Screening. • UPDRS Part 3 score of >= 10. • Hoehn and Yahr Stage must be <= 3. • 30 to 90 years of age. A subject may be of either gender and any race/ethnicity. • Results of Screening clinical laboratory tests (hematology, blood chemistries, and urinalysis) drawn within 3 weeks prior to Randomization, clinically acceptable to the investigator • Patient is either a male or a female of reproductive potential and agrees to use (or have their partner use) one of the listed highly effective methods of birth control or a female not of reproductive potential. |
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E.4 | Principal exclusion criteria |
• A subject must not have a form of drug induced or atypical parkinsonism, cognitive impairment (ie, Montreal Cognitive Assessment [MoCA] score < 26), bipolar disorder, schizophrenia, or other psychotic disorder. • A subject must not have a history of repeated strokes with stepwise progression, repeated head injury, encephalitis and/or oculogyric crises on no drug treatment. • A subject must not have experienced a stroke within 6 months of Screening or have a persistent neurological deficit that may interfere with study assessments. • A subject must not have definite encephalitis, strictly unilateral features 3 years after being diagnosed with PD, other neurological features such as supranuclear gaze palsy, cerebellar signs, a Babinski sign with clear, clinically significant pyramidal tract involvement, frequent falls, hallucinations unrelated to medications, or presence of cerebral tumor or communicating hydrocephalus on neuroimaging (by history). • A subject must not have severe, symptomatic autonomic involvement unrelated to medications. • A subject must not have exposure to a known neurotoxin. • A subject must not have a history of sustained remission of their Parkinson’s symptoms. • A subject must not have failed to show a therapeutic response if a diagnostic levodopa (L dopa) challenge had been done with a large test dose ( > 500 mg) of L dopa (if malabsorption excluded). • A subject must not have been treated with L dopa or dopamine agonists for other than diagnostic purposes. If a subject has received L dopa or dopamine agonists for diagnostic purposes, he/she must not have received the L dopa or dopamine agonist within 30 days before Screening. • A subject must not have an untreated major depressive disorder meeting Diagnostic and Statistical Manual of Mental Disorders IV Text Revision criteria. (A subject who is successfully treated [Beck Depression Inventory, Version II {BDI II} score < 19] with stable doses of allowed antidepressant medications for at least the 4 weeks immediately before Screening is eligible. • A subject must not be at imminent risk of self-harm or harm to others, in the investigator’s opinion based on clinical interview and responses provided on the Columbia Suicide Severity Rating Scale (CSSRS). • A subject must not have a systolic blood pressure (BP) >=150 mm Hg OR diastolic BP >= 100 mm Hg at Screening or at a BP recheck prior to Randomization. Subjects may be on stable antihypertensive medication. • Cardiovascular Disease: A subject must not have had any clinically significant cardiovascular event or procedure for 6 months prior to Randomization. • Liver Enzymes: A subject must not have an alanine aminotransferase (ALT) or aspartate aminotransferase (AST) >= 3 x the upper limit of normal (ULN) or total bilirubin (T BIL) >= 1.5 x ULN. • Liver Disease: A subject must not have a history of serologically confirmed hepatic dysfunction (defined as viral infection [Hepatitis A, B, or C; Epstein Barr virus {EBV}; cytomegalovirus {CMV}]) or a history of diagnosis of drug or alcohol induced hepatic toxicity or frank hepatitis. (If the subject has a negative history of any form of viral induced hepatitis, and if the LFTs meet the liver enzymes exclusion criterion, no serological tests for viral hepatitis are required for entry into the trial.) A subject who has a history of serologically confirmed EBV or CMV may be enrolled in the trial as long as his/her viral infection was not associated with hepatitis in the past, and his/her LFTs are normal at Screening. • Prohibited Concomitant Medications: A subject must not have received any treatment listed more recently than the indicated period before Randomization, or continue to receive any treatment listed during the trial, unless expressly prescribed by the investigator during the trial. (see table in protocol) • A subject must not have an average daily consumption of more than three 4 ounce glasses (180 mL) of wine or the equivalent. • A subject must not have poorly controlled diabetes ( eg, HbA1c > 8.5) or significantly abnormal renal function (eg, creatinine > 2.0 mg/dL) in the opinion of the investigator. • A subject must not have a severe or ongoing unstable medical condition (eg, any form of clinically significant cardiac disease, symptomatic orthostatic hypotension, seizures, or alcohol/drug dependence). • A subject must not have participated in any studies using preladenant. • A female subject must not be breast-feeding or considering breast-feeding. • A female subject must not be pregnant or intending to become pregnant. • A subject must not have been participating in any other clinical trial within 90 days, inclusive, of signing the informed consent form of the current trial. |
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E.5 End points |
E.5.1 | Primary end point(s) |
Change from Baseline to Week 26 (End of Part 1 treatment) in the sum of the UPDRS Parts 2 and 3 scores. |
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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 | Yes |
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 | 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) | Yes |
E.8.2.2 | Placebo | Yes |
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.8.4.1 | Number of sites anticipated in Member State concerned | 5 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 50 |
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 | Information not present in EudraCT |
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 | 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 overall trial ends when the last remaining subject has ended participation in the trial, by completing the trial, being discontinued from the trial, or being lost to follow-up. A subject is considered to have fulfilled participation when he/she has completed the last protocol-specified contact (eg, visits or telephone contacts). |
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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 | 7 |
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 | 7 |
E.8.9.2 | In all countries concerned by the trial days | 0 |