A single blind, placebo-controlled, randomised study in mild to moderate Alzheimer's disease patients to assess the safety, tolerability, pharmacokinetics and pharmacodynamics of GSK239512, a selective histamine H3 receptor antagonist
- Conditions
- Alzheimer's DiseaseMedDRA version: 9.1Level: LLTClassification code 10001896Term: Alzheimer's disease
- Registration Number
- EUCTR2007-004117-33-GB
- Lead Sponsor
- GlaxoSmithKline R&D Ltd
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- ot Recruiting
- Sex
- All
- Target Recruitment
- 38
1. Male or female subjects with a clinical diagnosis of probable Alzheimer’s disease in accordance with the NINCDS-ADRDA criteria and a Haschinski ischaemia score less than or equal to 4 and an MRI or CT scan in the last 12 months.
2. The subject has an MMSE score at screening of 12 to 26 for Part A and 16-26 for Part B.
3. Age > 50 and above.
4. If female, the subject must be post-menopausal (i.e. 12 months without menstrual period) or surgically sterile.
5. Male subjects must be willing to abstain from sexual intercourse with pregnant or lactating women; or be willing to use a condom/spermicide in addition to having their female partner use another form of contraception such as an intra-uterine device (IUD), barrier methods (e.g. condom or occlusive cap (diaphragm or cervical vault/caps)), oral contraceptives, injectable progesterone, subdermal implants or a bilateral tubal ligation if the woman could become pregnant, from the time of the first dose of GSK239512 until 84 days following completion of the study.
6. The subject has the ability to comply with the study procedures.
7. The subject has a permanent caregiver and is willing to attend all study visits for Parts A and B.
8. The subject has provided full written informed consent prior to the performance of any protocol specific procedure, or if unable to provide informed consent due to cognitive status, full written informed consent on behalf of the subject has been provided by a legally acceptable representative.
9. The caregiver has provided his / her written consent prior to the performance of any protocol specific procedure.
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
1. In the opinion of the investigator, following review of CT/MRI scans in the past 12 months and completion of neurological review there could be other probable causes of dementia which include, but are not limited to:
• History and/or evidence (CT or MRI scan performed since the onset of symptoms) of any other CNS disorder that could be interpreted as the primary cause of dementia: e.g. cerebrovascular disease, structural or developmental abnormality, epilepsy, infections, degenerative or inflammatory/demyelinating CNS conditions other than AD.
• Clinically significant focal findings on the neurological exam (excluding changes attributable to peripheral nervous system injury).
• Untreated abnormal result of any of the following tests: vitamin B12, syphilis serology, thyroid stimulating hormone (TSH), where this is thought to be the cause of, or to contribute to the severity of, the subject’s dementia.
• Diagnosis of possible, probable or definite vascular dementia in accordance with National Institute of Neurological Disorders and Stroke-Association Internationale pour la Recherche l’Enseignement en Neurosciences (NINDS-AIREN) criteria.
2. History of significant psychiatric illness such as schizophrenia or bipolar affective disorder that in the opinion of the Investigator would interfere with participation in the study, or current depression (a score of =8 on the Cornell Scale for Depression in Dementia), or subjects with other psychiatric features in their AD which would in the opinion of the investigator, would increase risk to safety.
3. History of significant sleep disturbance, for example, when it is associated with nocturnal wandering, nocturnal confusion / disorientation / agitation, which in the opinion of the investigator, may increase safety risk.
4. History or presence of known or suspected seizures, unexplained significant loss of consciousness within last 6 months. Subjects who had febrile seizures in childhood may be included if these ceased by age 10 and they have had no other type of seizure in their medical history and have not been on anti-epileptic medications.
5. History or presence of significant cardiovascular, gastro-intestinal, hepatic, or renal disease or other condition known to interfere with the absorption, distribution, metabolism, or excretion of drugs, or any other clinically relevant abnormality, medical or psychiatric condition, which, in the opinion of the Investigator, makes the subject unsuitable for inclusion in the study.
6. History of alcohol or other substance abuse, according to the Diagnostic and Statistical Manual of Mental Disorders – Substance related disorders (DSM-IV) criteria.
7. Clinically significant abnormalities in laboratory tests, including subjects with active liver disease (to include subjects with ALT or AST greater than 3 times the upper limit of normal and/or bilirubin greater than 1.5 times the upper limit of normal) or uncontrolled thyroid disease.
8. Uncontrolled hypertension with systolic BP =160 and/or diastolic =95 mmHg. Subjects with controlled hypertension with systolic BP < 160 mmHg and diastolic <95 mmHg for at least 4 weeks are acceptable.
9. Systolic BP <100 mmHg and/or diastolic <60 mmHg.
10. Subjects with a QTc of >450ms or >480ms if they have bundle branch block or other ECG abnormalities which, in the opinion of the investigator is clinically significant in that they may increase safety risk.
11. History of hypersensivity to GSK239512 or its excipients.
12. T
Study & Design
- Study Type
- Interventional clinical trial of medicinal product
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method
- Secondary Outcome Measures
Name Time Method