Efficacy and Safety of T-817MA in Patients With Mild to Moderate Alzheimer's Disease (US202)

ADAS-cog Change From Baseline to Week 52

The ADAS-cog (Alzheimer's Disease Assessment Scale-cognitive subscale) is a structured scale that evaluates memory (word recall, word recognition), reasoning (following commands), language (naming, comprehension), orientation, ideational praxis (placing letter in envelope) and constructional praxis (copying geometric designs). Ratings of spoken language, language comprehension, word finding difficulty, and ability to remember test instructions are also obtained. The test is scored in terms of errors, with higher scores reflecting poorer performance and greater impairment. Scores can range from 0 (best) to 70 (worse).

Time frame: Baseline and 52 weeks

CGIC

The ADCS-CGIC (Alzheimer's Disease Cooperative Study-Clinical Global Impression of Change) is a validated categorical measure of change in the patient's clinical condition between baseline and follow-up visits. It measures whether the effects of active treatment are substantial enough to be detected by a skilled and experienced clinician on the basis of a clinical interview and examination. It relies on both direct examination of the patient and an interview of the study partner. A skilled and experienced clinician who is blinded to treatment assignment rates the patient on a 7-point Likert scale, ranging from 1 (marked improvement) to 7 (marked worsening). It is suggested that the instrument has distinct clinical utility in assessing change in AD clinical trials.

Time frame: 52 weeks