E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Painful Diabetic Neuropathy |
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E.1.1.1 | Medical condition in easily understood language |
Painful Diabetic Neuropathy (complication of diabetes) |
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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 | 20.0 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10067547 |
E.1.2 | Term | Diabetic peripheral neuropathic pain |
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 compare the efficacy of EMA401 vs. placebo in 24-hour average pain intensity score at Week 12, using an 11 point Numeric Rating Scale (NRS) by testing the superiority of EMA401 vs. placebo |
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E.2.2 | Secondary objectives of the trial |
•Compare the efficacy of EMA401 vs placebo in NPSI total score by testing the superiority of EMA401 vs placebo
•Evaluate the efficacy of EMA401 compared to placebo, as measured by the BPI-SF total score at Wk 12; as measured by the weekly mean of the 24-hour worst pain intensity score, using the NRS at Wk 12; on the PGIC at Wk 12
•Evaluate the proportion of EMA401 patients achieving a ≥ 30% and a ≥ 50% reduction in weekly mean 24-hr average pain intensity score using the NRS vs placebo at Wk 12
•Evaluate the effect of EMA401 vs placebo on the ISI at Wk 12
•Evaluate the safety and tolerability of EMA401 vs placebo, as measured by treatment-emergent AEs, AEs leading to study drug discontinuation and SAEs
•Evaluate the PK of EMA401 and exposure-response relationship for EMA401
•Evaluate the proportion of patients who need rescue medication separately for the treatment epoch and treatment withdrawal epoch and the time to first intake of rescue medication during the treatment epoch |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
• At the time of Screening, have documented diagnosis of Type I OR Type II diabetes mellitus (DM) with painful distal symmetrical sensorimotor neuropathy (for example ICD-10 code G63.2) of more than 6 months duration with any one or more of the following:
- Neuropathic symptoms (e.g. numbness, non-painful paresthesias or tingling, non-painful sensory distortions or misinterpretations, etc.)
- Decreased distal sensation (e.g. decreased vibration, pinprick sensation, light touch, etc.)
• Be assessed as suffering from moderate to severe neuropathic pain across the Screening epoch.
• A score of ≥ 4 on the Douleur Neuropathique en 4 Questions (DN4) questionnaire at Screening.
Other protocol-defined inclusion criteria may apply. |
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E.4 | Principal exclusion criteria |
• History or current diagnosis of electrocardiogram (ECG) abnormalities indicating significant risk of safety for patients participating in the study.
• Major depressive episode within 6 months prior to Screening and/or a history of diagnosed recurrent major depressive disorder according to Diagnostic and Statistical Manual of Mental Disorders, 5th Edition (DSM-V) diagnostic criteria.
• Have evidence of significant renal insufficiency or pre-existing liver condition.
• Have platelets ≤ 100 x 109/L, or neutrophil count < 1.2 x 109/L (or equivalent), hemoglobin ≤ 100 g/L for women or hemoglobin ≤ 110 g/L for men.
• Participants whose glycemic control has been unstable within 3 months immediately prior to screening (e.g., ketoacidosis requiring hospitalization, any recent episode of hypoglycemia requiring assistance through medical intervention, uncontrolled hyperglycemia).
• Patients with any differential diagnosis of PDN including but not limited to other neuropathies (e.g. Vitamin B12 deficiency, Chronic Inflammatory Demyelinating Polyneuropathy), polyradiculopathies, central disorders (e.g. demyelinating disease), or rheumatological disease (e.g., foot arthritis, plantar fasciitis).
• Patient is unwilling or unable to complete daily eDiary.
Other protocol-defined exclusion criteria may apply. |
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E.5 End points |
E.5.1 | Primary end point(s) |
Change in weekly mean 24-hour average pain score (using the 11 point NRS) from Baseline to Week 12 |
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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) |
• Change in Neuropathic Pain Symptom Inventory (NPSI) total score from Baseline to Week 12
• Change in Brief Pain Inventory-Short Form (BPI-SF) interference total score from Baseline to Week 12
• Change in weekly mean of the 24-hour worst pain score, using an 11-point Numeric Rating Scale (NRS), from Baseline to Week 12
• Patient Global Impression of Change (PGIC) at Week 12
• Proportion of patients meeting responder criteria from Baseline to Week 12
• Change in Insomnia Severity Index (ISI) from Baseline to Week 12
• Number and severity of treatment- emergent adverse events and the frequency of adverse events leading to discontinuation. Number of serious adverse events.
• Plasma pharmacokinetics of EMA401 will be characterized by population non-linear mixed effects modeling techniques
• Proportion of patients who need rescue medication separately for the double blind treatment epoch and treatment withdrawal epoch, the time to first intake of rescue medication during the double blind treatment epoch |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
For full details, please refer to the schedule of assessments table in the protocol. |
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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 | Yes |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
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) | 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 | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 74 |
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 |
Australia |
Austria |
Belgium |
Bulgaria |
Canada |
Denmark |
Finland |
France |
Germany |
Hungary |
Norway |
Poland |
Portugal |
Slovakia |
Spain |
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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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 1 |
E.8.9.1 | In the Member State concerned months | 1 |
E.8.9.1 | In the Member State concerned days | |
E.8.9.2 | In all countries concerned by the trial years | 1 |
E.8.9.2 | In all countries concerned by the trial months | 1 |