Clinical trials assessing efficacy, safety and tolerability of different doses of oral cebranopadol in patients with moderate to severe chronic pain due to diabetic peripheral neuropathy

• Conditions: Moderate to severe chronic pain due to diabetic peripheral neuropathy (DPN) requiring analgesia in subjects with well-controlled and stable type 1 or type 2 diabetes mellitus.; MedDRA version: 18.0Level: PTClassification code 10012680Term: Diabetic neuropathySystem Organ Class: 10029205 - Nervous system disorders; Therapeutic area: Diseases [C] - Symptoms and general pathology [C23]

• Registration Number: EUCTR2013-000473-68-NL
• Lead Sponsor: Grünenthal GmbH

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Study Start: 2013-06-18
• Last Update Posted: 4 August 2015

Recruitment & Eligibility

• Status: ot Recruiting
• Sex: All
• Target Recruitment: 350

Inclusion Criteria

1.Informed consent signed (Visit 1).
2.Male or female subjects aged 18 years to 80 years inclusive at the Enrollment Visit (Visit 1).
3.All subjects must have type 1 or type 2 diabetes mellitus and must have a documented clinical diagnosis of painful DPN with symptoms and signs for at least 3 months and pain present at the Enrollment Visit (Visit 1).
4.The investigator considers the subject’s blood glucose to be controlled by a diet, oral anti-hyperglycemic medication, and/or insulin for at least 3 months prior to Enrollment Visit. This control should be documented. Hemoglobin (HbA1C) should not be greater than 11% at the Enrollment Visit (Visit 1).
5. Subject must require medication (e.g. non-opioids or opioids up to an
equivalent dose of 160 mg oral morphine/day) for the treatment of pain
due to DPN for at least 1 month prior to Visit 1 and must be dissatisfied
with the current treatment (in terms of efficacy and/or
tolerability). Medication for the treatment of pain due to DPN should be
required on at least 4 of 7 consecutive days.
6.Subjects must be using medically acceptable and highly effective methods of birth control (and willing to use them during the trial):
For women of childbearing potential: A medically acceptable and highly effective method of birth control is defined as any form of contraception with a low failure rate defined as <1% per year. For example:
•Hormonal contraceptives for at least 2 months prior to the Enrollment Visit and until at least 4 weeks after Visit 7.
•An intra-uterine device.
Additional barrier contraception must be used by the partner for the duration of the trial. A double-barrier method should be supplemented by the use of spermicidal agents.
Women of non-childbearing potential may be included if surgically sterile (i.e., after hysterectomy) or post-menopausal for at least 2 years.
For men: Men have to use barrier contraception (condom) during sexual intercourse for the duration of the trial. The male subject has to take care that the female sexual partner uses at least 1 additional method of contraception with a low failure rate defined as <1% per year (e.g., oral contraceptives) during this time frame.
7.Women of childbearing potential must have a negative urine ß human chorionic gonadotropin (ß-hCG) pregnancy test at the Enrollment Visit (Visit 1) and at the Baseline Visit (Visit 3).
8.A baseline pain intensity score =5 on the 11-point NRS without intake of any analgesic (including rescue medication) at Visit 3. For each of the last 3 days prior to Visit 3, a 24 hour NRS score =4 is required.
The baseline pain will be calculated as the average over the three 24-hour pain assessments of the last 3 days prior to the Baseline Visit (Visit 3).

Are the trial subjects under 18? no
Number of subjects for this age range:
F.1.2 Adults (18-64 years) yes
F.1.2.1 Number of subjects for this age range 300
F.1.3 Elderly (>=65 years) yes
F.1.3.1 Number of subjects for this age range 50

Exclusion Criteria

1. Presence of other pain that could confound the assessment of, or contribute to, painful DPN. Such pain could include, but is not limited to, pain due to nerve entrapment (e.g. tarsal tunnel syndrome, osteoarthritis of the knee), peripheral vascular disease, radiculopathy, plantar fasciitis, tendonitis, mononeuritis multiplex, postherpetic neuralgia, complex regional pain syndrome, or fibromyalgia.
2. Neuropathy due to etiologies other than diabetes. These neuropathies include, but are not limited to, those associated with autoimmune disorders, inflammatory neuropathies (e.g. chronic inflammatory demyelinating polyneuropathy), thyroid disease or endocrine disorders (other than diabetes), heavy metal or toxic neuropathy, nutritional deficiency, metabolic disorders, vasculitis, infections, injury, or paraneoplastic syndromes.
3. Severe or extensive diabetic ulcers or amputations of the limbs (i.e. more than 2 toes) or Charcot’s joints due to diabetes. Subjects who have had an amputation for a reason other than diabetes (e.g. injury) may be eligible for this trial.
4. Any clinically significant disease or laboratory findings that in the investigator’s opinion may affect efficacy or safety assessments or may compromise the subject’s safety during trial participation, e.g., significant unstable cardiac, vascular, pulmonary, gastrointestinal, endocrine, metabolic, neurological, or psychiatric disorders.
5. Any medical or other reason (e.g. known or suspected inability of the subject to comply with the protocol and with the use of the IMP) that, in the investigator’s opinion, might indicate that the subject is unsuitable for the trial.
6. Conditions that require treatment with forbidden medication (see Forbidden concomitant treatments).
7. Use of forbidden concomitant medication as specified in Forbidden concomitant treatments.
8. Previous or current alcohol or drug abuse or opioid dependency, according to the investigator’s judgment, based on the subject's history, examination, and the result of the drugs of abuse test. Subjects with positive urine drug test explained by a medically indicated treatment are allowed to participate in the trial as long as not specified otherwise in Forbidden concomitant treatments.
9. Subjects with severe functional hepatic impairment corresponding to Child-Pugh classification C. Subjects with impaired hepatic cellular integrity indicated by aspartate transaminase (AST) or alanine transaminase (ALT) greater than 3 x the upper limit of normal (ULN).
10. History of acute hepatitis within 3 months of Visit 1 or chronic hepatitis or a positive result on anti-hepatitis A IgM antibody within the past 6 months, hepatitis B surface antigen, or anti–hepatitis C antibody.
11. Subjects with impaired renal function with a creatinine clearance less than 60 mL/min at the Enrollment Visit (Visit 1) (calculated from the Cockcroft-Gault [1976] formula).
12. History of any major gastrointestinal prior procedures (e.g. gastric bypass) or gastrointestinal conditions (e.g., acute diarrhea, blind loop syndrome, gastric dumping syndrome, Whipple’s disease) that might affect the absorption or metabolism of cebranopadol.
13. Presence of risk factors for (e.g. heart failure, hypokalemia, or bradycardia) or history of torsade de pointes and/or marked prolongation of the corrected QT (Fridericia) (QTcF >450 ms).
14. History of seizure disorder and/or epilepsy or any condition associated with a significant risk for se

Study & Design

• Study Type: Interventional clinical trial of medicinal product
• Study Design: Not specified