Outcome
Type |
Measure |
Description |
Time frame |
Safety issue |
Primary |
Blood Oxygen Level Dependent (BOLD) Signal by Functional Magnetic Resonance Imaging (fMRI) Visual Nauseogenic Task |
BOLD signal fMRI Visual Nauseogenic Task data were to be collected at indicated time-points. The seed-to-voxel driven approach included a priori seed Regions of interest (ROIs) placed in brain areas subserving nausea-related processing included regions like interoceptive/sensory (insula, Dorsal anterior cingulate cortex [dACC]), emotional/affective (amygdala, Pregenual anterior cingulate cortex [pgACC]), and cognitive/evaluative (dorsolateral prefrontal cortex [dlPFC]/ Occipitofrontal Circumference [OFC]) brain areas, primary visual (V1) and extrastriate cortices. The primary endpoints of this exploratory study involved combining data from Part A and Part B. The purpose of Part A was decision making for Part B. Placebo was used to enable albiglutide and exenatide to be dosed at different times relative to MRI due to differences in Tmax, while preserving single-blind (similar to double dummy), hence data was to be reported in albiglutide, exenatide and off-therapy arms only. |
Up to Week 11 |
|
Primary |
Regional Cerebral Blood Flow (rCBF) by Functional MRI (fMRI)-Arterial Spin Labeling (ASL) |
Pseudo-Continuous Arterial spin labeling (pCASL) data were planned to be analyzed to assess rCBF within the brain during using functional MRI scans. Quality control of imaging data were planned to be performed by visual inspection with adequate data denoted by mean rCBF values over the gray matter within a previously defined normal range (i.e., 40-60 millimeter [mm]/100 gram [g] tissue/ minute [min]). In addition, all data were planned to undergo motion and physiological noise correction. Placebo was used to enable albiglutide and exenatide to be dosed at different times relative to MRI due to differences in Tmax, while preserving single-blind (similar to double dummy), hence data was reported in albiglutide, exenatide and off-therapy arms only. |
Up to Week 11 |
|
Primary |
Glutamate Concentration in Nausea-associated Brain Regions by Magnetic Resonance Spectroscopy (MRS) |
Glutamine/Glutamate (Glx) was planned to be analyzed using proton-density weighted magnetic resonance spectroscopy (1H-MRS). 1H-MRS analysis assessed regional differences in Glx concentrations, normalized as a ratio with creatine. MRS quantification of metabolites of interest were based on frequency domain analysis using a Linear Combination of Model spectra (LCModel). Cramer-Rao lower bounds (CRLBs), as reported from the LCModel analysis, were planned to be used to assess the reliability of the major metabolites and adequate Signal to noise ratio (SNR). CRLBs values less than 40% were further planned to be analyzed. Metabolite maps for each participant, and each session were planned to be calculated. Placebo was used to enable albiglutide and exenatide to be dosed at different times relative to MRI due to differences in Tmax, while preserving single-blind (similar to double dummy), hence data was reported in albiglutide, exenatide and off-therapy arms only. |
Up to Week 11 |
|
Primary |
Gama-aminobutyric Acid (GABA) Concentration in Nausea-associated Brain Regions by MRS |
GABA concentrations was planned to be analyzed using proton-density weighted 1H-MRS. 1H-MRS analysis assessed regional differences GABA concentrations, normalized as a ratio with creatine. MRS quantification of metabolites of interest were based on frequency domain analysis using a LC Model. CRLBs, as reported from the LC Model analysis, were planned to be used to assess the reliability of the major metabolites and adequate SNR. CRLBs values less than 40% were further planned to be analyzed. Metabolite maps for each participant, and each session were planned to be calculated. Placebo was used to enable albiglutide and exenatide to be dosed at different times relative to MRI due to differences in Tmax, while preserving single-blind (similar to double dummy), hence data was reported in albiglutide, exenatide and off-therapy arms only. |
Up to Week 11 |
|
Secondary |
Heart Rate Variability Using Autonomic Response Measures by MRI |
Heart rate variability was to be evaluated using autonomic response measure. All peripheral autonomic physiological signals were planned to be collected at 400 Hz using Chart Data Acquisition Software (ADInstruments) on a laptop equipped with a 16-channel Powerlab DAQ System (ADInstruments). Heart rate variability was to be reported as recorded by chart data acquisition software. Placebo was planned to be used to enable albiglutide and exenatide to be dosed at different times relative to MRI due to differences in Tmax, while preserving single-blind (similar to double dummy), hence data was reported in albiglutide, exenatide and off-therapy arms only. |
Up to Week 11 |
|
Secondary |
Number of Participants With Abnormal Electrocardiogram (ECG) Intervals Using Autonomic Response Measures by MRI |
ECGs intervals were to be evaluated for the participant during the scanning session using autonomic response measures. ECG signal were planned to be collected with an MRI-compatible participant Monitoring system (Biopac 150, Biopac Systems Inc.) through MRI-compatible electrodes (VerMed, Bellows Falls) placed on the chest. Placebo was planned to be used to enable albiglutide and exenatide to be dosed at different times relative to MRI due to differences in Tmax, while preserving single-blind (similar to double dummy), hence data was reported in albiglutide, exenatide and off-therapy arms only. |
Up to Week 11 |
|
Secondary |
Number of Participants With Abnormal Respiratory Rate Using Autonomic Response Measures by MRI |
Number of participants with abnormal respiratory rate are reported during imaging session was to be evaluated using autonomic response measures. All peripheral autonomic physiological signals were planned to be collected at 400 Hz using Chart Data Acquisition Software (ADInstruments) on a laptop equipped with a 16-channel Powerlab DAQ System (ADInstruments). Placebo was planned to be used to enable albiglutide and exenatide to be dosed at different times relative to MRI due to differences in Tmax, while preserving single-blind (similar to double dummy), hence data was reported in albiglutide, exenatide and off-therapy arms only. |
Up to Week 11 |
|
Secondary |
Number of Participants With Skin Conductance Level Using Autonomic Response Measures by MRI |
Skin conductance level was to planned to be evaluated with MRI-compatible bipolar Silver (Ag)/Silver chloride (AgCl) finger electrodes placed on the palmar aspect of the second and fourth fingers of the non-dominant (left) hand, prior to the MRI session. All peripheral autonomic physiological signals were planned to be collected at 400 Hz using Chart Data Acquisition Software (ADInstruments) on a laptop equipped with a 16-channel Powerlab DAQ System (ADInstruments). Placebo was planned to be used to enable albiglutide and exenatide to be dosed at different times relative to MRI due to differences in Tmax, while preserving single-blind (similar to double dummy), hence data was reported in albiglutide, exenatide and off-therapy arms only. |
Up to Week 11 |
|
Secondary |
Number of Participants With Abnormal Heart Rate for Session 1 |
Data of participants with abnormal heart rate (measured during site visits by sphygmomanometer) were reported. Participants with low and high heart rate has been presented. Potential clinical concern value for heart rate is < 50 beats per minute to > 120 beats per minute. Safety Population comprised of all participants who received at least one dose of the study treatment. |
Day 1: pre-MRI, 0.5 hour post-MRI; Day 4: -2 hours pre-MRI, 0.5 and 1 hour post MRI; Day 5; Day 8: -2 hour pre-MRI, 0.5 and 1 hour post-MRI |
|
Secondary |
Number of Participants With Abnormal Heart Rate for Session 2 |
Data of participants with abnormal heart rate (measured during site visits by sphygmomanometer) were reported. Participants with low and high heart rate has been presented. Potential clinical concern value for heart rate is < 50 beats per minute to > 120 beats per minute. |
Day 1: pre-MRI, 0.5 hour post-MRI; Day 4: -2 hours pre-MRI, 0.5 and 1 hour post MRI; Day 5; Day 8: -2 hour pre-MRI, 0.5 and 1 hour post-MRI |
|
Secondary |
Number of Participants With Abnormal Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) for Session 1 |
SBP and DBP were measured in supine position after 5 minutes rest. Data for Session 1 and 2 and for Pre and Post MRI has been presented. Potential clinical concern value for SBP is <100 millimeters of mercury (mmHg) and >170 mmHg. Potential clinical concern value for DBP is <50 mmHg and >110 mmHg. |
Day 1: pre-MRI, 0.5 hour post-MRI; Day 4: -2 hours pre-MRI, 0.5 and 1 hour post MRI; Day 5; Day 8: 0.5 and 1 hour post-MRI |
|
Secondary |
Number of Participants With Abnormal SBP and DBP for Session 2 |
SBP and DBP were measured in supine position after 5 minutes rest. Data for Session 1 and 2 and for Pre and Post MRI has been presented. Potential clinical concern value for SBP is <100 millimeters of mercury (mmHg) and >170 mmHg. Potential clinical concern value for DBP is <50 mmHg and >110 mmHg. |
Day 1: pre-MRI, 0.5 hour post-MRI; Day 4: -2 hours pre-MRI, 0.5 and 1 hour post MRI; Day 5; Day 8: 0.5 and 1 hour post-MRI |
|
Secondary |
Number of Participants With Abnormal Clinical Chemistry Parameters |
Clinical chemistry parameters included assessment of blood urea nitrogen (BUN), creatinine, epidermal growth factor receptor (eGRF), potassium, sodium, calcium, Aspartate transaminase (AST), Alanine transaminase (AST), Alkaline phosphatase, total and direct bilirubin, total protein and albumin. |
Up to Week 11 |
|
Secondary |
Number of Participants With Abnormal Hematology Parameters |
Hematology parameters included assessment of platelet count, red blood cell (RBC) count, hemoglobin, hemotocrit, RBC indices including mean corpuscular volume and mean corpuscular hemoglobin (MCH), and White blood cells (WBC) count with differential count including, neutrophils, lymphocytes, monocytes, eosinophils and basophils. |
Up to Week 11 |
|
Secondary |
Number of Participants With Abnormal Urinalysis |
Urinalysis parameters included assessment of specific gravity, microscopic analysis, and potential of hydrogen (pH), glucose, protein, blood and ketones by dipstick method. |
Up to Week 11 |
|
Secondary |
Number of Participants With Abnormal Glycemic Parameters |
Glycemic parameters included assessment of capillary blood glucose and fasting plasma glucose. |
Up to Week 11 |
|
Secondary |
Number of Participants With Non-serious Adverse Events (AE) With Incidence > = 2 % and Serious AEs (SAE) |
An AE is any untoward medical occurrence in a clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. Any untoward event resulting in death, life threatening, requires hospitalization or prolongation of existing hospitalization; results in disability/incapacity, congenital anomaly/birth defect or any other situation according to medical or scientific judgment were categorized as SAE. Data of participants with non-serious AEs ( with incidence >= 2%) and SAEs has been presented. Placebo was included to maintain the single blind only; similar to double dummy. |
Up to Week 13 |
|
Secondary |
Nausea Ratings Scale to Rate Nausea Sensation Using Autonomic Response Measures by MRI |
Nausea ratings were planned to be collected during motion sickness provocation using a 0-4 numerical rating scale (NRS), where 1 is rated as minimal nausea experienced and 4 as severe nausea was experienced. Participants were asked to press buttons on a MRI compatible button-box to rate nausea from 0 to 4. Placebo was planned to be used to enable albiglutide and exenatide to be dosed at different times relative to MRI due to differences in Tmax, while preserving single-blind (similar to double dummy), hence data was reported in albiglutide, exenatide and off-therapy arms only. |
Up to Week 11 |
|
Secondary |
Gastrointestinal (GI) Visual Analogue Scale (VAS) for Assessment of Nausea for Session 1 |
Participant completed VAS to record their perception of stomach fullness, hunger, nausea, bloating and abdominal pain. The VAS was represented by lines, 100 millimeter in length, anchored with words describing the most negative rating on the left and the most positive rating on the right. Scores ranged from 0 mm to 100 mm. Scores of 0 mm are worst (most negative rating on the left) and scores of 100 mm are best (most positive rating on the right). NA indicates that data were not available as standard deviation could not be calculated due to low number of participants. |
Day 1 (Pre-MRI and 0.5 hour post-MRI); Day 4 (Pre-MRI and 0.5 hour post-MRI); and Day 8 (Pre-MRI and 0.5 hour post-MRI) |
|
Secondary |
GI VAS for Assessment of Nausea for Session 2 |
Participant completed VAS to record their perception of stomach fullness, hunger, nausea, bloating and abdominal pain. The VAS was represented by lines, 100 millimeter in length, anchored with words describing the most negative rating on the left and the most positive rating on the right. Scores ranged from 0 mm to 100 mm. Scores of 0 mm are worst (most negative rating on the left) and scores of 100 mm are best (most positive rating on the right). NA indicates that data were not available as standard deviation could not be calculated due to low number of participants. |
Day 1 (Pre-MRI and 0.5 hour post-MRI); Day 4 (Pre-MRI and 0.5 hour post-MRI); and Day 8 (Pre-MRI and 0.5 hour post-MRI) |
|
Secondary |
Motion Sickness Assessment Questionnaire (MSAQ) for Assessment of Nausea for Session 1 |
Participant completed MSAQ to quantify the severity of different dimensions of nausea induced by motion sickness. There were total 16 items: 4 related to gastro-intestinal (GI), 5 related to central (C), 3 related to peripheral (P) and 4 related to sopite-related (SR). All items were scored individually on a scale of 1-9 where 1 means 'not at all severe' and 9 means 'severe', with higher score indicates more severity. Individual 16 items with their scores are presented. NA indicates that data were not available as standard deviation could not be calculated due to low number of participants. |
Day 1 0.5 hour post-MRI; Day 4 0.5 hour post-MRI; and Day 8 0.5 hour post-MRI |
|
Secondary |
MSAQ for Assessment of Nausea for Session 2 |
Participant completed MSAQ to quantify the severity of different dimensions of nausea induced by motion sickness. There were total 16 items: 4 related to gastro-intestinal (GI), 5 related to central (C), 3 related to peripheral (P) and 4 related to sopite-related (SR). All items were scored individually on a scale of 1-9 where 1 means 'not at all severe' and 9 means 'severe', with higher score indicates more severity. Individual 16 items with their scores are presented. NA indicates that data were not available as standard deviation could not be calculated due to low number of participants. |
Day 1 0.5 hour post-MRI; Day 4 0.5 hour post-MRI; and Day 8 0.5 hour post-MRI |
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