The Efficacy of Galantamine Treatment on Attention in Patients With Alzheimer's Disease
This study will examine whether the administration of galantamine is effective for improvement of attention and more effective for patients with serious disturbance of attention by administering galantamine to patients with Alzheimer's dementia and performing an attention test on baseline, week 4 and 12.
|Study Design:||Endpoint Classification: Safety/Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
|Official Title:||The Efficacy of Galantamine Treatment on Attention in Patients With Alzheimer's Disease|
- Change From Baseline in Simple Reaction Time [ Time Frame: Baseline, Week 12 ] [ Designated as safety issue: No ]The Simple Reaction Time is a computerized attention test that evaluates the patient's reaction time when the color of the computer screen changes from black to white by performing a total of 70 times for six minutes.
- Change From Baseline in Choice Reaction Time [ Time Frame: Baseline, Week 12 ] [ Designated as safety issue: No ]The Choice Reaction Time is a computerized attention test that evaluates the reaction time and the number of errors by showing patients one card on the computer screen and making them find the same one among similar four cards. The test is performed a total of 12 times.
- Change From Baseline in Alzheimer's Disease Assessment Scale - Cognitive Subscale (ADAS-Cog) [ Time Frame: Baseline, Week 12 ] [ Designated as safety issue: No ]The Alzheimer's disease Assessment Scale-Cognitive subscale (ADAS-Cog) is an instrument used to assess cognitive dysfunction in individuals with Alzheimer disease and other dementias. It consists of 11 items, with scores ranging from 1 to 70. Maximum score is 70. Higher scores indicate worsening.
- Change From Baseline in Korean Version of Disability Assessment for Demential Scale (DAD-K) [ Time Frame: Baseline, Week 12 ] [ Designated as safety issue: No ]DAD-K is the Korean version of the Assessment for Dementia Scale, a tool developed to evaluate the Alzheimer patients' function including both basic and instrumental Activities of Daily Livings (ADL). It evaluates one function from various perspectives including behavior initiation, plan and preparation, and valid performance. It consists of 10 questions, each can score either 0 (no) or 1 (yes), if not applicable, patient will check on "not applicable (x)" which will not count in the calculation. Scores range from 0 to 100. Higher score represents better function
- Change From Baseline in Seoul-Instrumental Activities of Daily Livings (S-IADL) [ Time Frame: Baseline, Week 12 ] [ Designated as safety issue: No ]The Seoul-Instrumental Activities of Daily Living (S-IADL) assesses patients' abilities to perform instrumental and social activities of daily living. These include the ability to prepare a balanced meal, remember appointments, keep financial records, remember to take medication, and so on. It is composed of 15 items, with scores ranging from 0 to 45. Lower scores indicate better functioning.
|Study Start Date:||October 2006|
|Study Completion Date:||February 2009|
|Primary Completion Date:||February 2009 (Final data collection date for primary outcome measure)|
Orally administered Galantamine 8 mg/day for the first 4 weeks. Thereafter the dose will be increased to 16 mg/day. If tolerated, the dose of galantamine can be increased up to 24 mg/day.
This is an open label (all people know the identity of the intervention), multi-center, prospective study investigating the effect of galantamine on the attention of Alzheimer's dementia patients. The objectives of this study include the evaluation of the relationship between change in attention after 4 weeks of galantamine administration and to investigate the effect of study drug after 12 weeks administration (the difference in the improvement of attention after the administration of galantamine). The secondary objective of this study is to clarify the causal relationship between improvement of attention and activities of daily living (ADL). The design of this study is prospective, open-label, multi-center study. Study populations are probable Alzheimer's dementia patients diagnosed by NINCDS-ADRDA (National Institute of Neurological and Communicative Disorders and Stroke and the Alzheimer's disease and Related Disorders Association), DSM-IV (Diagnostic and Statistical Manual of Mental Disorders) criteria. The efficacy of study drug will be assessed by evaluating cognitive function, attention and behavioral symptoms before and after the treatment using the following assessment tools: ADAS-K-cog11 (Alzheimer's Disease Assessment Scale - cognitive subscale), computerized attention test and activities of daily living. Safety evaluations include adverse event monitoring and clinical lab tests. The patient is administered oral galantamine 8 mg/day for the first 4 weeks and then 16 mg/day. The dose of galantamine is increased up to 24 mg if tolerated.