E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
The proposed study is planned to demonstrate that ataciguat 200 mg/day could be effective in reducing neuropathic pain with a good safety profile |
|
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 9.1 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10054095 |
E.1.2 | Term | Neuropathic pain |
|
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 efficacy of ataciguat administered as 200 mg once daily for 28 days in comparison to placebo in reducing pain intensity in patients with chronic neuropathic pain. |
|
E.2.2 | Secondary objectives of the trial |
• To investigate the safety and tolerability of 200 mg ataciguat once daily in comparison to placebo. • To compare the effects of ataciguat with placebo on the change of pain intensity versus baseline by using the following scales and clinical tests: The Visual Analog Scale Pain Relief Scale, The Visual Analog Scale Pain Intensity Scale, The Neuropathic Pain Symptom Inventory. • To evaluate the effects of ataciguat in comparison to placebo on the change in pain intensity of mechanical allodynia. • To evaluate the use of rescue medication (paracetamol) in ataciguat-treated patients in comparison to placebo-treated patients. • To assess the exposure to ataciguat.
|
|
E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
The study will include adult patients of either gender, 18 – 75 years of age, who have signed the informed consent form, and presenting with chronic neuropathic pain due to diabetic polyneuropathy or a peripheral nerve lesion following a surgical intervention such as inguinal hernia repair, thoracotomy, coronary artery bypass surgery or orthopedic limb surgery. The neuropathic pain must have a distinct neuroanatomically plausible distribution demonstrated by at least one confirmatory test (e.g. clinical sensory examination, electrophysiology) and be present for more than 3 months.
|
|
E.4 | Principal exclusion criteria |
7.3.1 Exclusion criteria related to study methodology
• Patients age at time of screening below limit of legal majority or older than 75 years; • Patients who are illiterate or are judged by the investigator to be unable or unlikely to understand the nature, scope and possible consequences of the study; • Patients with a history of multiple allergic reactions to drugs; • Patients with short life expectancy; • Patients with severe or unstable hepatic, gastrointestinal, cardiovascular, respiratory, neurological (other than neuropathy), psychiatric, hematological, renal, or dermatological disease, or any other medical condition that might interfere with the evaluation of study medication according to investigator’s medical judgment; • Serum creatinine >150 µmol/L; • Presence of signs of clinically significant abnormalities on a standard electrocardiogram (ECG) recording at the screening visit according to investigator’s medical judgment (e.g., QTc ≥ 500 ms); • Presence or history of cancer within the past five years with the exception of adequately treated localized basal cell skin cancer or in situ uterine cervical cancer; • Patients with a history of HIV infection; • Patients with active hepatitis B or C; • Patients with abnormal folate, vitamin B12 or elevated TSH (hypothyroidism) that could be the cause of the neuropathic pain, and need to be corrected; • Patients with diabetes mellitus and time between diagnosis of diabetes and enrolment <6 months; • Patients with diabetes mellitus and HbA1c >11%; • Patients with an average daily pain intensity for their neuropathic pain <4 on the 11-point NRS over the last 3 days before randomization; • Patients with any pain other than the neuropathic pain of equal or greater severity; • Sensory polyneuropathy post chemotherapy or in the context of cancer or AIDS; • Patients with previous treatment failure to several approved treatment regimens for neuropathic pain of adequate doses and duration; • Patients with a complex regional pain syndrome; • Patients with chronic post-radiculopathic syndrome; • Patients with trigeminus neuralgia; • Neurologic deficits diagnosed within one month prior to the study and considered to be progredient throughout the duration of the study; • Pregnant or breastfeeding women; • Women of child-bearing potential are excluded unless they meet one of the following criteria: Women of child-bearing potential must commit to use a double barrier method of contraception during the entire study, including the screening period, according to the following algorithm: [intrauterine device or hormonal contraception] plus [condom or diaphragm or spermicidal]. Women using oral contraception must also have done so for 3 months prior to the randomization (Visit 3). To be considered not of child-bearing potential, women must be post-menopausal for at least 2 years or surgically sterile.
7.3.2 Exclusion criteria related to background therapy and rescue medication
• Patients with contraindications for paracetamol treatment, e.g., chronic alcohol consumption (e.g., alcoholic drinks every day for male: ≥3; for female ≥2), ALAT and/or ASAT >3 x ULN, hepatocellular insufficiency (Child Pugh ≥9), Morbus Meulengracht (Gilbert-Syndrom; increased bilirubin due to increased unconjugated / indirect bilirubin, poor nutritional status;
• Use of the following drugs within 5-times the half-life prior to start with the baseline pain intensity assessment (Visit 1 or 2) before the randomization visit: antidepressants, anticonvulsants or mexiletine for the treatment of pain; opioids or morphinomimetics; fatty acid supplements, primrose oil, myoinositol, chromium picolinate that are known to be used in neuropathic pain; Acetyl salicylic acid (ASA) more than 325 mg/day and not indicated for myocardial infarction or transient ischemic attack prophylaxis; benzodiazepines other than indicated at low doses for sleep disorders muscle relaxants, capsaicine; • Electroconvulsive therapy within 30 days of baseline evaluation (Visit 3); • Physiotherapy if not stable 1 month before and during the study; • Antidiabetics if not stable in the month before the study (because of unstable glycemic control); • Use of any investigational drug product within 3 months prior to the study;
7.3.3 Exclusion criteria related to ataciguat
• Treatment with medications which are substrates to the CYP2C9 enzymatic system (e.g. warfarin, fluvastatin); if close blood glucose monitoring is ensured, patients with stable glycemic control and on stable dosing with glyburide/glibenclamide, glipizide, glimepiride or nateglinide are eligible; • ALAT and/or ASAT >3 x ULN;
|
|
E.5 End points |
E.5.1 | Primary end point(s) |
Primary endpoint: Change in the average daily pain intensity defined as the mean of the last 7 days of each treatment period compared to baseline.
|
|
E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | Information not present in EudraCT |
E.6.2 | Prophylaxis | Information not present in EudraCT |
E.6.3 | Therapy | Yes |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | Information not present in EudraCT |
E.6.7 | Pharmacodynamic | Information not present in EudraCT |
E.6.8 | Bioequivalence | Information not present in EudraCT |
E.6.9 | Dose response | Yes |
E.6.10 | Pharmacogenetic | Information not present in EudraCT |
E.6.11 | Pharmacogenomic | Information not present in EudraCT |
E.6.12 | Pharmacoeconomic | Information not present in EudraCT |
E.6.13 | Others | Information not present in EudraCT |
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 | 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 | 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 | 3 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 15 |
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
| |
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 | |
E.8.9.1 | In the Member State concerned days | |
E.8.9.2 | In all countries concerned by the trial years | 1 |