We are updating the design of this site. Learn more.
Show more
ClinicalTrials.gov
ClinicalTrials.gov Menu
Trial record 7 of 15 for:    Alzheimer rosiglitazone

Rosiglitazone (Extended Release Tablets) As Adjunctive Therapy In Subjects With Mild To Moderate Alzheimer's Disease (REFLECT-3)

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT00348140
First Posted: July 4, 2006
Last Update Posted: September 4, 2017
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by (Responsible Party):
GlaxoSmithKline
  Purpose

Rosiglitazone (RSG) has been tested in clinical studies and is approved by the FDA as a treatment for type II diabetes mellitus, a disease that occurs when the body is unable to effectively use glucose. RSG XR, the investigational drug used in this study, is an extended-release form of RSG.

This study tests whether RSG XR safely provides clinical benefit to people with mild to moderate Alzheimer's disease (AD) when combined with one of the currently approved AD medications, Aricept®, Razadyne® or Exelon®. RSG XR is a new approach to AD therapy and this study tests a new way to treat AD by testing whether one's genetic makeup affects the response to the study drug. Clinical data suggesting that RSG may benefit AD patients was first seen in a small study performed at the University of Washington and then from a larger GSK study conducted in Europe and New Zealand. In the first study, subjects receiving RSG once daily for 6 months scored significantly better on 3 tests of memory and thought than those who did not receive RSG. In the GSK study, those that appeared to benefit most from treatment with RSG XR had a specific genetic pattern. They did not have the gene that caused them to produce the protein apolipoprotein E e4 (APOE e4). Subjects who have the APOE e4 gene may have two copies, one from each parent, or they may have only one APOE e4 gene meaning that they inherited either the APOE e2 or APOE e3 version of the gene, instead of APOE e4, from one of their parents. Subjects with one copy of the APOE e4 gene remained at their same level of thinking ability while those with two copies of the APOE e4 gene, continued to worsen during the 6-month treatment. The current study will more directly test the effectiveness or RSG XR on people who either have or lack the APOE e4 gene.


Condition Intervention Phase
Alzheimer's Disease Drug: Rosiglitazone Extended Release 2mg Drug: Rosiglitazone Extended Release 8mg Other: Placebo Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: A 54 Week, Double-blind, Randomised, Placebo-controlled, Parallel Group Study to Investigate the Effects of Rosiglitazone (Extended Release Tablets) as Adjunctive Therapy to Acetylcholinesterase Inhibitors on Cognition and Overall Clinical Response in APOE4-stratified Subjects With Mild to Moderate Alzheimer's Disease

Resource links provided by NLM:


Further study details as provided by GlaxoSmithKline:

Primary Outcome Measures:
  • Change From Baseline in Alzheimer's Disease Assessment Scale - Cognitive Subscale (ADAS-Cog) Total Score at Week 48, as a Function of APOE ε4 Status in APOE4 Negatives Cohort [ Time Frame: Baseline (Week 0) and Week 48 ]
    The 11-item ADAS-Cog assessed a range of cognitive abilities including memory, comprehension, orientation in time and place and spontaneous speech. Most items were evaluated by tests, but some were dependent on clinician ratings on a five point scale. Scores range from 0 to 70 with higher scores indicating greater dysfunction. Change from Baseline was calculated as value at scheduled time point minus Baseline value. Baseline was defined as value at Week 0. Estimated value was calculated by Active treatment minus Placebo. The adjusted means were presented. A hierarchical testing procedure was used to control for statistical tests in the two RSG dose groups and the genetic subgroups.

  • Change From Baseline in ADAS-Cog Total Score at Week 48, as a Function of APOE ε4 Status in All Except E4/E4s Cohort [ Time Frame: Baseline (Week 0) and Week 48 ]
    The 11-item ADAS-Cog assessed a range of cognitive abilities including memory, comprehension, orientation in time and place and spontaneous speech. Most items were evaluated by tests, but some were dependent on clinician ratings on a five point scale. Scores range from 0 to 70 with higher scores indicating greater dysfunction. Change from Baseline was calculated as value at scheduled time point minus Baseline value. Baseline was defined as value a t Week 0. Estimated value was calculated by Active treatment minus Placebo. The adjusted means were presented. A hierarchical testing procedure was used to control for statistical tests in the two RSG dose groups and the genetic subgroups.

  • Change From Baseline in ADAS-Cog Total Score at Week 48, as a Function of APOE ε4 Status in Full Population Cohort [ Time Frame: Baseline (Week 0) and Week 48 ]
    The 11-item ADAS-Cog assessed a range of cognitive abilities including memory, comprehension, orientation in time and place and spontaneous speech. Most items were evaluated by tests, but some were dependent on clinician ratings on a five point scale. Scores range from 0 to 70 with higher scores indicating greater dysfunction. Change from Baseline was calculated as value at scheduled time point minus Baseline value. Baseline was defined as value a t Week 0. Estimated value was calculated by Active treatment minus Placebo. The adjusted means were presented. A hierarchical testing procedure was used to control for statistical tests in the two RSG dose groups and the genetic subgroups.

  • Change From Baseline in Clinical Dementia Rating Scale - Sum of Boxes (CDR-SB) Score at Week 48, as a Function of APOE ε4 Status in APOE4 Negatives Cohort [ Time Frame: Baseline (Week 0) and Week 48 ]
    The CDR-SB was a validated clinical assessment of global function in patients with AD. Impairment was scored in each of 6 cognitive categories on a scale in which none = 0, questionable = 0.5, mild = 1, moderate = 2, and severe = 3. The 6 individual category ratings, or "box scores", can be added together to give the CDR-Sum of Boxes which ranges from 0 to 18 (severe impairment). Change from Baseline was calculated as value at scheduled time point minus Baseline value. Baseline was defined as value a t Week 0. Estimated value was calculated by Active treatment minus Placebo. The adjusted means were presented. Primary inference will be based on the week 48 treatment differences obtained from the MMRM model. A hierarchical testing procedure was used to control for statistical tests in the two RSG dose groups and the genetic subgroups.

  • Change From Baseline in CDR-SB Score at Week 48, as a Function of APOE ε4 Status in All Except E4/E4s Cohort [ Time Frame: Baseline (Week 0) and Week 48 ]
    The CDR-SB was a validated clinical assessment of global function in patients with AD. Impairment was scored in each of 6 cognitive categories on a scale in which none = 0, questionable = 0.5, mild = 1, moderate = 2, and severe = 3. The 6 individual category ratings, or "box scores", can be added together to give the CDR-Sum of Boxes which ranges from 0 to 18 (severe impairment). Change from Baseline was calculated as value at scheduled time point minus Baseline value. Baseline was defined as value a t Week 0. Estimated value was calculated by Active treatment minus Placebo. The adjusted means were presented. Primary inference will be based on the week 48 treatment differences obtained from the MMRM model. A hierarchical testing procedure was used to control for statistical tests in the two RSG dose groups and the genetic subgroups.

  • Change From Baseline in CDR-SB Score at Week 48, as a Function of APOE ε4 Status in Full Population Cohort [ Time Frame: Baseline (Week 0) and Week 48 ]
    The CDR-SB was a validated clinical assessment of global function in patients with AD. Impairment was scored in each of 6 cognitive categories on a scale in which none = 0, questionable = 0.5, mild = 1, moderate = 2, and severe = 3. The 6 individual category ratings, or "box scores", can be added together to give the CDR-Sum of Boxes which ranges from 0 to 18 (severe impairment). Change from Baseline was calculated as value at scheduled time point minus Baseline value. Baseline was defined as value a t Week 0. Estimated value was calculated by Active treatment minus Placebo. The adjusted means were presented. Primary inference will be based on the week 48 treatment differences obtained from the MMRM model. A hierarchical testing procedure was used to control for statistical tests in the two RSG dose groups and the genetic subgroups.


Secondary Outcome Measures:
  • Change From Baseline in ADAS-Cog Total Score at Weeks 8, 16, 24 and 36 [ Time Frame: Baseline (Week 0) and Week 8, 16, 24, 36 ]
    The 11-item ADAS-Cog assessed a range of cognitive abilities including memory, comprehension, orientation in time and place and spontaneous speech. Most items were evaluated by tests, but some were dependent on clinician ratings on a five point scale. Scores range from 0 to 70 with higher scores indicating greater dysfunction. Change from Baseline was calculated as value at scheduled time point minus Baseline value. Baseline was defined as value a t Week 0. It was calculated at Weeks 8, 16, 24 and 36. Full population data was presented.

  • Change From Baseline in CDR-SB Score at Weeks 12, 24 and 36 [ Time Frame: Baseline (Week 0) and Week 12, 24, 36 ]
    The CDR-SB was a validated clinical assessment of global function in patients with AD. Impairment was scored in each of 6 cognitive categories on a scale in which none = 0, questionable = 0.5, mild = 1, moderate = 2, and severe = 3. The 6 individual category ratings, or "box scores", can be added together to give the CDR-Sum of Boxes which ranges from 0 to 18 (severe impairment). Change from Baseline was calculated as value at scheduled time point minus Baseline value. Baseline was defined as value a t Week 0. Estimated value was calculated by Active treatment minus Placebo. The adjusted means were presented. It was calculated at Weeks 12, 24 and 36. Full population data was presented.

  • Change From Screening in Mini Mental State Examination (MMSE) Total Score [ Time Frame: Screening (Week -4) and Week 48 ]
    The MMSE consists of 11 tests of orientation, memory (recent and immediate), concentration, language and praxis. Scores range from 0 to 30, with lower scores indicating greater cognitive impairment. The scale is completed by the investigator, based on the performance of the participant. Change from screening was calculated as value at scheduled time point minus screening value. Baseline was defined as value a t Week 0. Estimated value was calculated by Active treatment minus Placebo. The adjusted means were presented. Full population data was presented.

  • Change From Baseline in Disability Assessment for Dementia (DAD) Total Score [ Time Frame: Baseline (Week 0) and Week 8, 16, 24, 48 ]
    The DAD assessed the ability of a participant to execute basic and instrumental activities of daily living (ADL) and leisure activities. The scale consists of 40 questions assessing basic and instrumental ADLs. This scale assessed a participants' ability to initiate, plan, and perform activities related to hygiene, dressing, continence, eating, meal preparation, telephoning, going on an outing, finance and correspondence, medications, leisure, and housework. Each item was scored as yes: 1, no: 0 and N/A: not applicable. Higher scores indicate less disability with a score of 100 indicating no disability and 0 indicating no functional ability. The percentage score was calculated as (DAD Total score /Total number of applicable items) multiplied by 100. Change from Baseline was calculated as value at scheduled time point minus Baseline value. Baseline was defined as value at Week 0. Full population data was presented.

  • Change From Baseline in Neuropsychiatric Inventory (NPI) Total Score [ Time Frame: Baseline (Week 0) and Week 8, 16, 24, 48 ]
    NPI is an assessment of frequency and severity of behavioral disturbances in dementia that comprised of 10 dimensions: delusions, hallucinations, dysphoria, apathy, euphoria, disinhibition, aggressiveness and agitation, irritability, anxiety, aberrant motor activity. Participant's caregiver asked about behavior in participant. If "Yes", informant then rated both severity on a 3-point scale, 1-mild to 3-severe (total range: 0-36) and frequency using a 4-point scale, 1-occasionally to 4-very frequently. Total score was frequency × severity. Distress was scored on 5-point scale, 0-no distress to 5-very severe or extreme. Total NPI score was calculated by adding all domain scores; NPI total score: 0-144 and NPI distress score: 0-60, higher scores indicated more severe behavioral disturbance. Change from Baseline was calculated as value at scheduled time point minus Baseline value. Baseline was defined as value at Week 0. Adjusted means were presented. Full population data was presented.

  • Change From Baseline in Domains of the Resource Utilization in Dementia Scale (RUD)- Q1 and Q2 Caregiver Hours [ Time Frame: Baseline (Week 0) and Week 12, 24, 36, 48 ]
    The RUD instrument was developed as a comprehensive tool to assess the amount of resource use among demented patients. RUD assessd both formal and informal resource use of the patient and the primary caregiver, making it possible to calculate costs from a societal perspective. Q1 corresponds to the number of hours during the last month the caregiver spent assisting the patient with toilet visits, eating, dressing, grooming, walking and bathing and Q2 corresponds to the number of hours during the last month the caregiver spent assisting the patient with shopping, food preparation, housekeeping, laundry, transportation, taking medication and managing financial matters. Change from Baseline was calculated as value at scheduled time point minus Baseline value. Baseline was defined as value at Week 0. Estimated value was calculated by Active treatment minus Placebo. The adjusted means were presented. Full population data was presented.

  • Change From Baseline in European Quality of Life -5 Dimensions (EQ-5D) Scale Total Score- Thermometer Score [ Time Frame: Baseline (Week 0) and Week 12, 36, 48 ]
    The EQ-5D Proxy is an assessment of quality of life and utility benefit. The EQ-5D Proxy is composed of two parts: part two is the visual analogue scale 'Thermometer'. Caregivers are asked to respond as they feel the participant would on dimensions of mobility, self-care, usual activities, pain/discomfort and anxiety/depression. The 'Thermometer' has endpoints of 100 (best imaginable health state) and 0 (worst imaginable health state). Change from Baseline was calculated as value at scheduled time point minus Baseline value. Baseline was defined as value a t Week 0. Estimated value was calculated by Active treatment minus Placebo. The adjusted means were presented. Full population data was presented.

  • Change From Baseline in EQ-5D Scale Total Score- Utility Score [ Time Frame: Baseline (Week 0) and Week 12, 36, 48 ]
    The EQ-5D Proxy is an assessment of quality of life and utility benefit. The EQ-5D Proxy is composed of two parts: part one is the five dimensional Health State Classification. The Utility score is a caregiver rating of health status on dimensions of mobility, self-care, usual activities, pain/discomfort, and anxiety/depression. Answers to each question were responded to on a 3-point scale which indicates the level of impairment (level 1= no problem; level 2=some or moderate problem(s) and level 3=unable, or extreme problem with higher scores indicating greater dysfunction. Change from Baseline was calculated as value at scheduled time point minus Baseline value. Baseline was defined as value a t Week 0. Estimated value was calculated by Active treatment minus Placebo. The adjusted means were presented. Full population data was presented.

  • Change From Baseline in Alzheimer's Carer's Quality of Life Instrument (ACQLI) Score [ Time Frame: Baseline (Week 0) and Week 12, 36, 48 ]
    The ACQLI is an assessment of caregiver quality of life. This instrument consisted of 30 questions exploring various aspects of carer's quality of life. Each of the questions had two point response, and the 30 questions were summed to provide a total score. Items were assumed to be unidimensional (i.e., represent a single variable) and were scored 0/1 (false/true) before summation into a total score with a 0-30 range. To ease comparisons between scales, ACQLI scores were transformed to range between 0-100 (100: worse). Change from Baseline was calculated as value at scheduled time point minus Baseline value. Baseline was defined as value a t Week 0. Estimated value was calculated by Active treatment minus Placebo. The adjusted means were presented. Full population data was presented.

  • Change in ADAS-Cog Total Score for Observed Cases at Week 54 Compared to Week 48 [ Time Frame: Week 48 and Week 54 ]
    The 11-item ADAS-Cog assessed a range of cognitive abilities including memory, comprehension, orientation in time and place and spontaneous speech. Most items were evaluated by tests, but some were dependent on clinician ratings on a five point scale. Scores range from 0 to 70 with higher scores indicating greater dysfunction. It was of interest to compare the single blind phase data between the treatment groups defined based on the double blind treatment group. This analysis only included participants who received at least one dose of single-blind medication. Change from Baseline was calculated as value at scheduled time point minus Baseline value. Baseline was defined as value at Week 0. Full population data was presented.

  • Change in CDR-SB Total Score for Observed Cases at Week 54 Compared to Week 48 [ Time Frame: Week 48 and Week 54 ]
    The CDR-SB was a validated clinical assessment of global function in participants with AD. Impairment was scored in each of 6 cognitive categories on a scale in which none = 0, questionable = 0.5, mild = 1, moderate = 2, and severe = 3. The 6 individual category ratings, or "box scores", can be added together to give the CDR-Sum of Boxes which ranges from 0 to 18 (severe impairment). It was of interest to compare the single blind phase data between the treatment groups defined based on the double blind treatment group. This analysis only included participants who received at least one dose of single-blind medication. Change from Baseline was calculated as value at scheduled time point minus Baseline value. Baseline was defined as value at Week 0. Full population data was presented.

  • Change From Baseline in Glycosylated Hemoglobin (HbA1c) at Week 48 [ Time Frame: Baseline (Week 0) and Week 48 ]
    Blood samples were collected for assessments of HbA1c levels at Baseline and up to Week 48. Change from Baseline was calculated as value at scheduled time point minus Baseline value . Baseline was defined as value at Week 0. Endpoint treatment differences which were adjusted to take account of missing data are derived. Full population data was presented.

  • Number of Participants With On-treatment Adverse Events (AEs), Serious Adverse Events (SAEs) and Severity of AEs [ Time Frame: Upto Week 48 ]
    AE was defined as any untoward medical occurrence in a participant temporarily associated with the use of a medicinal product, whether or not considered related to the medicinal product. SAE was any untoward medical occurrence that, at any dose results in death, was life threatening, required hospitalization or prolongation of existing hospitalization, resulted in disability/incapacity, was a congenital anomaly/birth defect or was considered as medically significant.

  • Number of Participants With Change From Baseline in Vital Signs of Clinical Concern at Any Time on Treatment- Weight [ Time Frame: Upto Week 54 ]
    Body weight was measured at all visits, without shoes and wearing light clothing. The assessment was performed a t Baseline and up to Week 54. Change from Baseline was calculated as value at scheduled time point minus Baseline value. Baseline was defined as value at Week 0. Full population data was presented.

  • Number of Participants With Change From Baseline in Vital Signs of Clinical Concern at Any Time on Treatment- Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) [ Time Frame: Upto Week 54 ]
    SBP and DBP of participants were recorded in sitting posture as vital sign at each visit. The blood pressure (BP) values were identified as of potential clinical concern if the values were out of the reference range (for SBP, 90 to 140 mmHg and DBP, 50 to 90 mmHg) or meet a change from baseline criterion. The change from baseline criterion for SBP, was increase from Baseline (high) if increased by more than or equal to (>=) 40 mm Hg from Baseline; decrease from Baseline (low) if decreased by >= 30 mmHg from Baseline. For DBP, increase from baseline (high) if increased by >=30 mmHg from baseline; decrease from Baseline (low) if decreased by >= 20 mmHg from Baseline. Baseline was defined as value at Week 0.

  • Number of Participants With Change From Baseline in Vital Signs of Clinical Concern at Any Time on Treatment- Heart Rate (HR) [ Time Frame: Upto Week 54 ]
    HR of participants were recorded in sitting posture as vital sign at each visit. The HR values were identified as of potential clinical concern if the values were out of the reference range (50 to 100 beats per minute) or meet a change from baseline criterion. The change from baseline criterion for HR, was increase from Baseline (high) if increased by more than or equal to (>=) 30 from Baseline; decrease from Baseline (low) if decreased by >= 30 from Baseline. Baseline was defined as value at Week 0. Full population data was presented.

  • Change From Baseline in Weight [ Time Frame: Baseline (Week 0) and Weeks 4, 8, 12, 16, 24, 36, 48, 54 ]
    Body weight was measured at all visits, without shoes and wearing light clothing. The assessment was performed at Baseline, Weeks 4, 8, 12, 16, 24, 36, 48, 54. Change from Baseline was calculated as value at scheduled time point minus Baseline value. Baseline was defined as value at Week 0. Full population data was presented.

  • Change From Baseline in Hemoglobin [ Time Frame: Baseline (Week 0) and Weeks 4, 16, 36, 48 ]
    Hematology parameters were assessed at Baseline, Weeks 4, 16, 36, 48. Change from Baseline was calculated as value at scheduled time point minus Baseline value. Baseline was defined as value at Week 0. Full population data was presented.

  • Change From Baseline in Hematocrit [ Time Frame: Baseline (Week 0) and Weeks 4, 16, 36, 48 ]
    Hematology parameters were assessed at Baseline and up to Week 48. Change from Baseline was calculated as value at scheduled time point minus Baseline value. Baseline was defined as value at Week 0.

  • Any Time on Treatment Differences in Frequencies of Hematology Data Outside the Reference Range [ Time Frame: Up to Week 48 ]
    Haematology parameters were identified as of PCC (high [H], low [L]), if the values were out of the reference range (RR). The range for parameters was: platelet (100AV-500AV), red blood cell (RBC , 0.8-1.2), hemoglobin (L: female [F]:10, male [M]:11; H: F:16.5-AV, M:18), hematocrit (0.8-1.2), white blood cell (WBC, 3-15), Total neutrophils (ANC- absolute Neutrophil count) (0.75-1.5), lymphocytes (0.75-1.5), monocyte s (0.75-2), eosinophils (none -2), basophils (none -2), mean corpuscle volume (MCV, 0.8-1.2), mean corpuscular hemoglobin (MCH, 0.8-1.2), mean corpuscular hemoglobin concentration (MCHC , 0.8-1.2), red cell distribution width (RDW, 0.8-1.2), Neutrophil bands (none-1) and segmented neutrophils (0.75-1.3). Full population data was presented.

  • Any Time on Treatment Differences in Frequencies of Clinical Chemistry Data Outside the Reference Range [ Time Frame: Upto Week 48 ]
    Clinical chemistry parameters were identified as of PCC (High, Low), if values were out of RR: Alanine amino transferase (ALT,none-120 [250percent upper limit of RR, ULRR ]),Album in (0.75-2),Aldolase(1.1-1.1),Aspartate amino transferase (AST,none-105 (3-64y),137.5(65+y),>250 percent ULRR), Alkaline phosphatase(ALP,none-312.5 (20+y),>250percent ULRR),blood urea nitrogen(BUN)/Creatinine ratio(none-1.25),BUN(none-11),Chloride(80-115),Calcium (0.75-1.25),Carbon dioxide(CO2,15-40) content,Creatinine (22,<50percent lower limit of RR [LLRR ]-155, >125percent ULRR),Creatine phosphokinase(CPK,none-1.25),Gamma glutamyl transferase(GGT,none-2.5),Glucose (3.6-7.8),HbA1C, High density lipoprotein (HDL,0.65-none),Lactate dehydrogenase (LDH,none -2), Low density lipoprotein(LDL,none-1.25),Magnesium (0.5-2),Potassium (3-5.5),Phosphorus inorganic(0.5-1.5), Sodium (130-150), Total protein (0.8-1.5),Total cholesterol(none -1.5),Direct Billirubin.

  • Changes From Baseline in Electrocardiogram (ECG) Parameters- HR [ Time Frame: Baseline (Week 0) and Weeks 4, 8, 16, 24, 36, 48, 54 ]
    Triplicate 12-lead ECG measures was obtained digitally, approximately one minute apart after the participant had rested in the supine position in a quiet room (no TV, minimal talking) for atleast 10 minutes. The ECG parameters includes HR. The assessments were performed at Baseline and up to Week 54. Change from Baseline was calculated as value at scheduled time point minus Baseline value . Baseline was defined as value at Week 0. Full population data was presented.

  • Changes From Baseline in ECG Parameters- RR Interval, QT Interval, QTcB, QTcF, PR Interval and QRS Duration [ Time Frame: Baseline (Week 0) and Weeks 4, 8, 16, 24, 36, 48, 54 ]
    Triplicate 12-lead ECG measures was obtained digitally, approximately one minute apart after the participant had rested in the supine position in a quiet room (no TV, minimal talking) for atleast 10 minutes. The ECG parameters includes PR interval, QRS duration, QT - uncorrected interval, QTc Bazett (QTcB), QTc Fridericia (QTcF) and RR interval. The assessments were performed at Baseline and up to Week 54. Change from Baseline was calculated as value at scheduled time point minus Baseline value. Baseline was defined as value at Week 0. Full population data was presented.

  • Change From Baseline in HbA1c up to Week 54 [ Time Frame: Baseline (Week 0) and Weeks 12, 24, 36, 48, 54 ]
    Blood samples were collected for assessments of HbA1c levels at Baseline, Weeks 12, 24, 36, 48, 54. Change from Baseline was calculated as value at scheduled time point minus Baseline value. Baseline was defined as value at Week 0.

  • Change From Baseline in Short Term Memory Assessment [ Time Frame: Baseline (Week 0) and upto Week 48 ]
    The 11-item ADAS-Cog assessed a range of cognitive abilities including memory, comprehension, orientation in time and place and spontaneous speech. Most items were evaluated by tests, but some were dependent on clinician ratings on a five point scale. Scores range from 0 to 70 with higher scores indicating greater dysfunction. Questions 1 (word recall) and 7 (word recognition) of ADAS-Cog questionnaire was summed to get a short term memory assessment. The score for Question 1 was calculated as the mean number of words not recalled over the trials for which data was available. If data for all three trials was missing, or if the score for Question 7 was missing then the short term memory score will also be set to missing. Change from Baseline was calculated as value at scheduled time point minus Baseline value. Baseline was defined as value a t Week 0. Estimated value was calculated by Active treatment minus Placebo. The adjusted means were presented.


Enrollment: 1468
Actual Study Start Date: July 12, 2006
Study Completion Date: March 20, 2009
Primary Completion Date: March 20, 2009 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Arm 1
Rosiglitazone Extended Release 2mg OD
Drug: Rosiglitazone Extended Release 2mg
Rosiglitazone Extended Release 2mg OD
Experimental: Arm 2
Rosiglitazone Extended Release 8mg OD
Drug: Rosiglitazone Extended Release 8mg
Rosiglitazone Extended Release 8mg OD
Placebo Comparator: Arm 3
Placebo
Other: Placebo
Placebo

Detailed Description:
A 54-week, double-blind, randomized, placebo-controlled, parallel-group study to investigate the effects of rosiglitazone (extended release tablets) as adjunctive therapy to acetylcholinesterase inhibitors on cognition and overall clinical response in APOE e4-stratified subjects with mild to moderate Alzheimer's disease (REFLECT-3)
  Eligibility

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


Ages Eligible for Study:   50 Years to 90 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

A subject will be eligible for inclusion in this study only if all of the following criteria apply:

  • Male or female subject with a clinical diagnosis of probable Alzheimer's disease in accordance with NINCDS-ADRDA criteria (Appendix 2).

(Note: National Institute of Neurological and Communicative Disorders and Stroke (NINCDS) and Alzheimer's Disease and Related Disorders Association (ADRDA).)

  • Subject has mild to moderate Alzheimer's disease as defined by a MMSE score 10 to 26 inclusive at Screening.
  • Hachinski Ischemia Score ≤ 4 at Screening (See Appendix 3).
  • Age ≥50 and ≤90 years.
  • At least 6 months of ongoing acetylcholinesterase inhibitor therapy for Alzheimer's disease, with stable dosing for at least the last 2 months (and with no intent to change for the duration of the study).
  • Current use of medication is in accordance with the criteria listed in Table 2 (Permitted Medications, Section 8.1).
  • Female subjects must be post-menopausal (i.e. >1 year without menstrual period), surgically sterile, or agree to use adequate method of contraception (Appendix 4) for the duration of the study. Female subjects who are pre-menopausal or who have been post-menopausal for <1 year must undertake pregnancy testing (urine test) at Visit 1, which must be negative.
  • Brain CT or MRI scan performed within the past 12 months or at Screening, showing no evidence of any other potential cause of dementia other than Alzheimer's disease.

(Note: Questionable CT or MRI scans should be discussed with the medical monitor, using central imaging guidelines.)

  • Neurological exam without focal changes (excluding changes attributable to AD or peripheral trauma).
  • Subject has the ability to comply with procedures for cognitive and other testing.
  • Subject lives with (or has substantial periods of contact with) a regular caregiver who is willing to attend all visits, oversee the subject's compliance with protocol-specified procedures and study medication, and report on subject's status.

(Note: A non-cohabiting caregiver must spend sufficient time with the subject so that, in the opinion of the Investigator, the caregiver can reliably assess cognitive function, activities and behavior, and report on the subject's compliance and health. As caregiver time spent with a potential subject is anticipated to be highly variable across countries and cultures, GSK will consider a variety of different measures by which this stipulation may be met, and GSK should be consulted if adequacy of a caregiver situation is in doubt. However, as guidance, the ability for a caregiver to meet his/her expected responsibilities for this study would normally be possible when the caregiver spends no less than 10 hours per week with the subject, divided over multiple days.)

  • Subject has provided full written informed consent prior to the performance of any protocol-specified 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.

(Note: Consent by legally acceptable representative is allowed where this is in accordance with local laws, regulations and ethics committee policy.)

  • Caregiver has provided full written informed consent on his/her own behalf prior to the performance of any protocol-specified procedure.
  • Subjects considered for enrolment must have a QTc (either QTc B (Bazett's correction) or QTc F (Fridericia's correction)) <450msec at Visit 1, with the exception of subjects with bundle branch block (for whom either QTc B or QTc F must be <480msec).

(Note: For the purposes of these criteria, QTc B is defined as (QT interval [msec]) / (square root of RR interval [seconds]); and QTc F is defined as (QT interval [msec]) / (cube root of RR interval [seconds]).)

Exclusion Criteria:

A subject will not be eligible for inclusion in this study if any of the following criteria apply:

  • Diagnosis of possible, probable, or definite vascular dementia in accordance with NINDS-AIREN criteria (Appendix 5).

(Note: National Institute of Neurological Disorders and Stroke (NINDS) and Association Internationale pour la Recherche et l'Enseignement en Neurosciences (AIREN).)

  • History or evidence of any other CNS disorder that could be interpreted as a cause of dementia: e.g. cerebrovascular disease (stroke, hemorrhage), structural abnormality, epilepsy, infectious or inflammatory/demyelinating CNS conditions, Parkinson's disease.
  • Evidence of the following disorders: current vitamin B12 deficiency, positive syphilis serology, or active thyroid dysfunction (particularly that suggestive of hypothyroidism), including abnormally high or low serum levels of thyroid stimulating hormone (TSH), that are clinically significant in the opinion of the investigator.

(Note: Testing is required for each parameter only when no result is available from previous 12 months.)

  • History of Type 1 diabetes mellitus or secondary diabetes mellitus.
  • Type 2 diabetes mellitus where the subject is being treated with insulin, a PPARγ agonist, or an insulin secretagogue (e.g. a sulfonylurea or glitinide).
  • Any patient with an HbA1c ≥8.5%. (See Section 6.3.8.4 for Safety Measures for Enrolled Subjects with Type 2 Diabetes Mellitus.)
  • History or clinical/investigational evidence of congestive heart failure defined by the New York Heart Association criteria (Class I to IV cardiac status; Appendix 6).
  • History of cardiovascular event within the last 6 months (i.e. intervention, percutaneous coronary intervention, vascular surgery, acute coronary syndrome [non Q-wave myocardial infarction, Q-wave myocardial infarction, unstable angina] or significant arrhythmia; or major intervention (e.g. cardiac surgery or angiography plus stenting) scheduled).
  • 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, major depressive disorder (according to DSM-IV) in the past year, or current active depression requiring initiation of treatment.

(Note: If not currently treated, but active depression is suspected, the Cornell Scale for Depression in Dementia (CSDD, Appendix 7) can be used by the Investigator as a guide for deciding whether a prospective subject requires treatment. If the subject has a CSDD score >7, the Investigator should decide if the subject has depression in need of prescribed medication, and a CSDD >12 is considered a strong indicator that treatment is needed. Subjects will be allowed to re-screen after their depression has been adequately managed for >3 months.)

  • History or presence of 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.
  • Clinically significant peripheral edema at the time of screening.
  • Current or recent drug or alcohol abuse or dependence (defined by DSM-IV criteria for substance-related disorders), or recent or remote history of the same if that could be a contributing factor to the dementia.
  • Systolic blood pressure >165 or <90 mmHg or diastolic blood pressure >95 or <60 mmHg at the time of screening.
  • Clinically significant anemia (i.e. hemoglobin <11 g/dL for males or <10 g/dL for females) or presence of hemoglobinopathies which would prevent accurate assessment of HbA1c.
  • Abnormal kidney function tests (>1.5 times the upper limit of normal (ULN)).
  • ALT, AST, or alkaline phosphatase values >2.5 times the ULN, total bilirubin values >1.5 times the ULN, or history of severe hepatobiliary disease (e.g. hepatitis B or C, or cirrhosis, Child-Pugh Class B/C).

(Note: For subjects with a diagnosis of Gilberts Syndrome and an isolated increase in total bilirubin >1.5 ULN, fractionation should be performed. If all of the following conditions are met, the patient may enter or remain in the study, even if total bilirubin >1.5 ULN:

  • an elevated unconjugated (indirect) bilirubin;
  • the percentage of direct bilirubin <35%;
  • ALT, AST, and alkaline phosphatase <2.5 ULN if subject is in screening (<2.0 ULN for Canadian subjects only), or ≤3 ULN if subject is already randomized into the study)
  • History of a bone marrow transplant.
  • Subject is unable (with assistance, if appropriate) to take study medication as prescribed throughout the study or is at risk of non-compliance with study medication or procedures.
  • Subject is an immediate family member or employee of the participating Investigator, of any of the participating site staff, or of GSK.
  • In France, a subject is neither affiliated with nor a beneficiary of a social security category.
  • The French subject has participated in any study using an investigational drug during the previous 30 days or 5 half-lives (whichever is longer).
  • Cognitive tasks prescribed for cognitive rehabilitation and performed under medical supervision are prohibited for 6 months prior to Screening, as well as for the duration of the study.
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00348140


  Show 194 Study Locations
Sponsors and Collaborators
GlaxoSmithKline
Investigators
Study Director: GSK Clinical Trials GlaxoSmithKline
  More Information

Additional Information:
Publications:
Study Data/Documents: Dataset Specification  This link exits the ClinicalTrials.gov site
Identifier: AVA102670
For additional information about this study please refer to the GSK Clinical Study Register
Statistical Analysis Plan  This link exits the ClinicalTrials.gov site
Identifier: AVA102670
For additional information about this study please refer to the GSK Clinical Study Register
Individual Participant Data Set  This link exits the ClinicalTrials.gov site
Identifier: AVA102670
For additional information about this study please refer to the GSK Clinical Study Register
Informed Consent Form  This link exits the ClinicalTrials.gov site
Identifier: AVA102670
For additional information about this study please refer to the GSK Clinical Study Register
Study Protocol  This link exits the ClinicalTrials.gov site
Identifier: AVA102670
For additional information about this study please refer to the GSK Clinical Study Register
Clinical Study Report  This link exits the ClinicalTrials.gov site
Identifier: AVA102670
For additional information about this study please refer to the GSK Clinical Study Register
Annotated Case Report Form  This link exits the ClinicalTrials.gov site
Identifier: AVA102670
For additional information about this study please refer to the GSK Clinical Study Register

Responsible Party: GlaxoSmithKline
ClinicalTrials.gov Identifier: NCT00348140     History of Changes
Other Study ID Numbers: AVA102670
First Submitted: June 30, 2006
First Posted: July 4, 2006
Results First Submitted: April 21, 2017
Results First Posted: September 4, 2017
Last Update Posted: September 4, 2017
Last Verified: August 2017
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: Yes
Plan Description: Patient-level data for this study will be made available through www.clinicalstudydatarequest.com following the timelines and process described on this site.
URL: http://

Keywords provided by GlaxoSmithKline:
adjunctive therapy
moderate
Alzheimer's disease
apolipoprotein E
mild
rosiglitazone
cognition

Additional relevant MeSH terms:
Alzheimer Disease
Rosiglitazone
Dementia
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Tauopathies
Neurodegenerative Diseases
Neurocognitive Disorders
Mental Disorders
Cholinesterase Inhibitors
Hypoglycemic Agents
Physiological Effects of Drugs
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Cholinergic Agents
Neurotransmitter Agents