A Study to Assess the Safety of Single Doses of GSK189075 in Subjects With Type 1 Diabetes Mellitus

Data for number of participants who presented one or more adverse events (serious or non serious) was reported. An AE was defined as any untoward medical occurrence (MO) in a participant temporally associated with the use of a medicinal product (MP), whether or not considered related to the MP and can therefore be any unfavourable and unintended sign (including an abnormal laboratory finding), symptom, or disease temporally associated with its use. The SAE was any untoward MO that, at any dose, results in death, life threatening, persistent or significant disability/incapacity, results in or prolongs inpatient hospitalization, congenital abnormality or birth defect, that may not be immediately life-threatening or result in death or hospitalization but may jeopardize the participant or may require medical or surgical intervention to prevent one of the other outcomes listed in this definition.

A hypoglycemic event was defined as symptoms of hypoglycemia confirmed by a blood glucose value below normal limits [less than 3.89 millimoles per liter (mmol/L)] or 70 milligrams per deciliter (mg/dL). Symptoms of hypoglycemia without confirmed blood glucose values were reported as AEs instead of hypoglycemic events. Number of participants with hypoglycemic events were reported.

SBP and DBP were obtained during each treatment period at the indicated time points. Measurements were made with the participant lying semi-recumbent having rested in this position for at least 10 minute before the initial reading.

Heart rate was obtained during each treatment period at indicated time points. Measurements were made with the participants lying semi-recumbent having rested in this position for at least 10 minutes before the initial reading.

Standard semi-recumbent 12-lead ECG was obtained after the participant rested for a minimum of 10 minutes (If questionable abnormality was noted on the ECG, 2 more measurements were allowed to provide an average of 3 measurements). Number of participants with abnormal ECG were reported.

Clinical Chemistry data for parameters: Alanine Amino Transferase (ALT), Albumin, Alkaline Phosphatase (ALP), Aspartate Amino Transferase (AST), Bicarbonate, Calcium, Chloride, Creatine Kinase, Creatinine, Gamma Glutamyl Transferase (GGT), Glucose, Lactate Dehydrogenase, Magnesium, Phosphorus, Potassium, Total Bilirubin, Sodium, Total protein, triglycerides and urea/BUN was reported. Data for number of participants with abnormal clinical Chemistry data was presented.

Data for abnormal Hematology parameters: Basophils, Eosinophils, Hematocrit, Hemoglobin, Lymphocytes, Mean Corpuscle Hemoglobin (MCH), Mean Corpuscle Volume (MCV), Monocytes, Platelet count, Red Blood Cell (RBC), Reticulocytes, Total Neutrophils, White Blood Cell (WBC) were reported. Data for number of participants with abnormal Hematology were reported.

Urine sample was collected at screening, Day -2 (18:00h) and Day 1 (7:45h) for determination of urine osmolality which was measured in Millimole per kilogram (mmol/kg).

Creatinine clearance was calculated and reported in Milliliters per minute (mL/min) on Day 1 of each period for each collection interval 0-4, 4-8, 8-12, 12-16 and 16-24 hour, as well as the combined intervals of 0-12 and 0-24 hour. For urine measurements, participants were instructed to void within 30 minutes before administration of study medication.

On Day 1, fluid intake, urine volume and number of micturations were recorded over the intervals for each of the following dosing periods: 0-4h, 4-8h, 8-12h, 12-16h and 16-24h. From these measures, fluid balance was calculated over the 24-hour period. Fluid Balance=total fluid intake minus total urine volume. The 0-24h amounts of total Fluid Intake, total urine output, and fluid balance were calculated by adding the amounts collected during these time intervals.

The plasma measurements at specified time points on Day 1 were collected. Derived plasma glucose parameters were presented.

AUC(0-10) was the plasma glucose weighted mean AUC for 0 to 10 h post-dosing and AUC(0-4) was the plasma glucose weighted mean AUC for 0 to 4 h post-dosing. Incremental Adjusted Weighted Means were presented.

UGE was assessed for timed subintervals up to 24h post-dose. Urine samples were collected at intervals: 0-4h, 4-8h, 8-12h, 12-16h and 16-24h on study days. The 0-24h amounts excreted in urine were calculated by adding the amounts collected during these time intervals.

Filtered glucose in the urine was assessed at indicated time points and was presented as Percentage. The 0-12h and 0-24h amounts Percent of filtered glucose in the urine were calculated by adding the amounts collected during these time intervals.

Urine volume was recorded over intervals : 0-4h, 4-8h, 8-12h, 12-16h and 16- 24h on Day 1 for each dosing period. Mean total Urine volume over 24 hours was presented.

Urine samples for calculating creatinine clearance were obtained over the intervals: 0-4h, 4-8h, 8-12h, 12-16h and 16-24h. Mean creatinine clearance over 0-24 H was presented.

AUC(0-last) was defined as area under the plasma concentration vs. time curve from time zero (time of dosing) to the last time point with measurable analyte concentration and AUC(0-inf) was defined as area under the plasma concentration vs. time curve from time zero to infinite time. Blood samples were collected on time points: Pre-dose, 0.25 h, 0.5 h, 0.75 h, 1 h, 1.5 h, 2 h, 2.5 h, 3 h, 4 h, 6 h, 8 h, 12 h, and 16 h of each treatment period.

Plasma samples for pharmacokinetic analysis were drawn at indicated time points of each treatment period. Cmax was defined as maximal measured plasma concentration over the time span specified. Values were reported as Geometric Means with respective Geometric Coefficient of Variation (% CV).

Tmax was defined as the time to the maximum or "peak" concentration of a drug observed after multiple administration. T1/2 was defined as the time to when half of the total amount of a particular substance is eliminated from the body. Blood samples obtained during indicated time points. T1/2 was calculated as t1/2 = ln2/λz, with λz (the terminal elimination rate-constant) estimated from log-linear regression analysis of the terminal phase of the plasma concentration-time profile.Tmax and t1/2 values for GSK189075 were presented.

AUC(0-4) was defined as AUC from time zero to 4 hours post dose. Blood samples were collected on time points: Pre-dose, 0.25 h, 0.5 h, 0.75 h, 1 h, 1.5 h, 2 h, 2.5 h, 3 h, 4 h, 6 h, 8 h, 12 h, and 16 h of each treatment period.

Oral clearance is a measure of the rate at which the drug is cleared from the body via metabolism. Blood samples were collected on time points: Pre-dose, 0.25 h, 0.5 h, 0.75 h, 1 h, 1.5 h, 2 h, 2.5 h, 3 h, 4 h, 6 h, 8 h, 12 h, and 16 h of each treatment period

Blood samples were collected on time points: Pre-dose, 0.25 h, 0.5 h, 0.75 h, 1 h, 1.5 h, 2 h, 2.5 h, 3 h, 4 h, 6 h, 8 h, 12 h, and 16 h of each treatment period to obtain the metabolite to parent AUC ratio for GSK189074

Blood samples were collected on time points: Pre-dose, 0.25 h, 0.5 h, 0.75 h, 1 h, 1.5 h, 2 h, 2.5 h, 3 h, 4 h, 6 h, 8 h, 12 h, and 16 h of each treatment period to obtain the metabolite to parent AUC ratio for GSK279782