A Randomized, Double-Blind, Placebo-Controlled, Clinical Evaluation of the Efficacy, Safety and Tolerability of Neramexane in Patients with Subjective Tinnitus

• Conditions: Efficacy, Safety and Tolerabilty of Neramexane in Patients with subjective Tinnitus; MedDRA version: 9.1Level: LLTClassification code 10042398Term: Subjective tinnitus

• Registration Number: EUCTR2007-007835-16-AT
• Lead Sponsor: Merz Pharmaceuticals GmbH

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Study Start: 2008-06-10
• Last Update Posted: 24 July 2012

Recruitment & Eligibility

• Status: ot Recruiting
• Sex: All
• Target Recruitment: 400

Inclusion Criteria

1) Signed written informed consent obtained from the patient
2) Patients with a clinical diagnosis of first onset, persistent (i.e. tinnitus should never be absent for > 24 hours in a row), subjective, uni- or bilateral tinnitus present for at least 3 months but not more than 12 months. In case of bilateral tinnitus this criterion applies to both ears.
3) Outpatients (male or female) between 18 and 75 years of age (inclusively) at screening
4) For females of childbearing potential (last menses less than one year prior to enrolment): negative pregnancy test at screening and at baseline (i.e. prior to entry in the double-blind treatment phase); not breast-feeding; either surgically sterile or agreement to use a medically accepted, highly effective contraception during the entire duration of the study A highly effective method of birth control is defined as those which result in a low failure rate (i.e. less than 1% per year) when used consistently and correctly such as implants, injectables, combined oral contraceptives, some IUDs, sexual abstinence or vasectomised partner.
5) TBF-12 total score = 9
6) HADS depression subscore = 10 and HADS anxiety subscore = 10
7) Physical examination and laboratory evaluations from the screening visit must be normal, or abnormal findings must be judged either not clinically relevant” or clinically relevant but of no concern” by the Investigator
8) Patient must be willing and able to comply with the protocol and study procedures
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
F.1.3 Elderly (>=65 years) yes
F.1.3.1 Number of subjects for this age range

Exclusion Criteria

1) Clinical diagnosis of intermittent or pulsatile tinnitus
2) Patients who have tinnitus as a concomitant symptom of an otological/neurological disease (such as otitis media, Menière’s disease, otosclerosis, etc)
3) Hearing impairment related to disturbance of sound conduction (air conduction threshold more than 20 decibel (dB) worse than in bone conduction in at least two tested frequencies)
4) Patients with evidence of clinically relevant and active
-Pulmonary
-Cardiovascular (e.g. sinus bradycardia < 41 bpm, sinus pauses, ventricular fibrillation, non-sustained sinus bradycardia, 2:1 AV block, complete heart block, first degree AV block if > 300 msec, AV block Mobitz II, prolonged QTc if > 500 msec, WPW syndrome, ST elevation, abnormal U wave, cardiac insufficiency NYHA III-IV or a history of myocardial ischaemia/infarction within the last 6 months)
-Renal
-Hepatic
-Gastrointestinal
-Neurological (e.g. epileptic seizures, multiple sclerosis, serious head/cervical trauma with residual deficits)
-Psychiatric (e.g. dementia, schizophrenia, current major depressive episode)
-Infectious (e.g. HIV infection/AIDS, tuberculosis)
-Endocrine
disorder of concern or other severe or uncontrolled systemic diseases which might interfere with the trial (patients with controlled diabetes who are normoglycemic under treatment may be included).
5) A systolic blood pressure (while seated) greater than 180 mmHg or less than 90 mmHg or diastolic blood pressure (while seated) greater than 105 mmHg or less than 45 mmHg
6) Patients with an oncology diagnosis (hematology or solid tumor) who are undergoing treatment, who have completed treatment within the last six months, and/or who still have evidence of active disease. (Patients with localized, benign dermatologic lesions may be included)
7) Former treatment with memantine, neramexane, rimantadine, amantadine
8) Documented history of hypersensitivity or intolerance to NMDA antagonists
9) Known hypersensitivity to the study drug or one of the ingredients of the formulation
10) Current absence from work due to tinnitus or application for a pension/retirement pay or granted pension/retirement because of tinnitus
11) Concomitant drugs and supplements intended for tinnitus treatment as well as non-pharmacological tinnitus treatments, e.g. biofeedback, maskers, noisers, acupuncture, hyperbaric oxygen therapy, low-power laser therapy, autogenic training, behavioural or psychotherapy during the last 28 days,
12) Patients who are taking any non-authorised concomitant medication as defined in Appendix 6 of the study protocol
13) Patients who plan to undergo elective surgery under local or general anaesthesia during the trial
14) Known or suspected alcoholism or drug abuse within the last three years
15) Patients who have participated in an investigational drug study or who have received treatment with an investigational drug within 30 days (or 5 half-lifes, whichever is longer) of screening
16) Pregnant or breastfeeding women
17) Employees or direct relatives of an employee of the CRO, the investigational site or Merz Pharmaceuticals
18) Patients who are lawfully kept in an institution or are imprisoned
19) Previous participation in this clinical study
20) Evidence or suspicion that the patient might not comply with the study directives and/or that he/she is not reliable or trustworthy.
21) Evidence or suspicion that the patient is not willing or unable to understand the information that is given to him/her as part

Study & Design

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

Primary Outcome Measures

Name	Time	Method
Main Objective: The objective of this study is to evaluate the efficacy, safety and tolerability of neramexane in comparison to placebo in patients with subjective tinnitus.;Secondary Objective: ;Primary end point(s): The primary efficacy endpoint is the change in the TBF-12 score from baseline to end of treatment (EOT). The confirmatory analysis will be performed using an ANCOVA model with treatment, country and gender as factors and baseline TBF-12 as covariate to compare placebo and neramexane.