A Clinical Trial to Test a Study Drug in Volunteers Who Develop Asthma Following Exercise

FEV1 was recorded in triplicate, with participant encouraged to inhale fully despite any presence of chest tightness. For FEV1, a pre-challenge Baseline was defined for each challenge time point as maximum of triplicate measurements performed prior to challenge. The maximal percentage change within 60 minutes following exercise challenge was derived by taking minimum (i.e., most negative) percentage change in FEV1 over 5, 10, 15, 30, 45 and 60 minutes post challenge. Percent change FEV1 = 100*(FEV1 - Pre-challenge FEV1)/ Pre-challenge FEV1. If the exercise challenge was not completed successfully (i.e. heart rate maintained at >=80% of the predicted value for 6 minutes), FEV1 maximal percent change (0-60)was set to be missing. Analysis was performed using a mixed effects model, including period, treatment and covariates for predose FEV1. Estimates and 95% confidence intervals for treatment difference between each active dose and placebo for each challenge time point were calculated.

FEV1 was recorded in triplicate, with participant encouraged to inhale fully despite any presence of chest tightness. For FEV1, a pre-challenge Baseline was defined for each challenge time point as maximum of triplicate measurements performed prior to challenge. The maximal percentage change within 60 minutes following exercise challenge was derived by taking minimum percentage change in FEV1 over 5, 10, 15, 30, 45 and 60 minutes post challenge. Percent change FEV1 = 100*(FEV1 - Pre-challenge FEV1)/ Pre-challenge FEV1. If the exercise challenge was not completed successfully (i.e. heart rate maintained at >=80% of the predicted value for 6 minutes), the FEV1 maximal percent change (0-60)was set to be missing. Analysis was performed using a mixed effects model, including period, treatment and covariates for predose FEV1. Estimates and 95% confidence intervals for treatment difference between each active dose and placebo for each challenge time point were calculated.

FEV1 was recorded in triplicate, with participant encouraged to inhale fully despite any presence of chest tightness. For FEV1, a pre-challenge Baseline was defined for each challenge time point as maximum of triplicate measurements performed prior to challenge.Weighted mean FEV1 percentage change recorded during 0-60 minutes post challenge was determined for each challenge, by dividing area under curve (AUC) for percent change from Baseline FEV1 measurements at 5, 10, 15, 30, 45 and 60 minutes post challenge by time interval. Actual times were used to determine time interval where available; otherwise planned relative time was used. If one or more FEV1 values were missing, AUC was calculated over time interval of available values. If intermittent values were missing over a participant's profile,it was assumed to be linear between 2 available values for calculation of AUC. Analysis was performed using a mixed effects model, including period, treatment and covariates for predose FEV1.

The time from maximal percentage change in FEV1 to recovery to within 5% of pre challenge Baseline (in minutes) was derived using actual sampling times. Time to FEV1 recovery= [SAS date/time of recovery(a) FEV1 - SAS date/time of FEV1 Maximum % Change0-60] / 60, where "a" is earliest recorded FEV1 either above pre-challenge Baseline or within 5% below pre challenge Baseline. Any unscheduled FEV1 measurements taken after last scheduled post challenge measurement was considered when deriving this endpoint. A corresponding censoring variable was derived for analysis to indicate whether recovery to within 5% of pre-challenge Baseline was achieved. The censoring variable was set to 1 if recovery to within 5% of Baseline was achieved. If recovery was not evident from data collected, time to recovery was calculated using the date/time of the last available post challenge FEV1 assessment and censoring variable was set to zero. Analysis was performed using a Cox proportional hazards model.

Rescue medication was provided to participants at any time and it was strongly recommended for participants with a FEV1 decrease of at least 40% following exercise challenge compared to Baseline. Rescue medication was administered 0 to 90 minutes post exercise challenge. Statistical analysis was supposed to be performed using logistic regression, however, the data was too sparse to permit any formal statistical analysis.

All participants rested for at least 10 minutes in the supine position prior to vital signs recordings. Vital signs Baseline values for SBP and DBP for each treatment period were calculated using the mean value of triplicate pre dose readings. Triplicate readings were taken at least five minutes apart. Assessment was performed at pre dose, 2 hours, 9.5 hours and 24 hours prior to exercise challenge.

All participants rested for at least 10 minutes in the supine position prior to vital signs recordings. Vital signs Baseline values for HR for each treatment period were calculated using the mean value of triplicate pre dose readings. Triplicate readings were taken at least five minutes apart. Assessment was performed at pre dose, 2 hours, 9.5 hours and 24 hours prior to exercise challenge.

All participants rested for at least 10 minutes in the supine position prior to ECG recordings. ECG Baseline values for each treatment period was calculated using the mean value of triplicate pre dose readings. Triplicate readings were taken at least five minutes apart. Assessment was performed at pre dose, 2 hours, 9.5 hours, 24 hours prior to exercise challenge and 60 minutes following exercise challenge at 2 hours. Participants with not clinically significant (NCS) abnormal values were reported. Potential clinical importance range for the ECG parameters are as follows: absolute QTc interval >450 millisecond (msec), increase from Baseline QTc >60 msec, PR interval <110 and >220 msec and QRS interval <75 and >110 msec. No participants reported clinically significant abnormal values.

Blood samples were collected for the assessment of clinical chemistry parameters for albumin and total protein at pre dose and 25 hours and 30 minutes. Participants had to fast for at least 8 hours prior to visit. During treatment periods, fasting continued until a light meal was allowed 1 hour post dose.

Blood samples were collected for the assessment of clinical chemistry parameters for ALP, ALT, AST and GGT at pre dose and 25 hours and 30 minutes. Participants had to fast for at least 8 hours prior to visit. During treatment periods, fasting continued until a light meal was allowed 1 hour post dose.

Blood samples were collected for the assessment of clinical chemistry parameters for direct bilirubin, total bilirubin and creatinine at pre dose and 25 hours and 30 minutes. Participants had to fast for at least 8 hours prior to visit. During treatment periods, fasting continued until a light meal was allowed 1 hour post dose.

Blood samples were collected for the assessment of clinical chemistry parameters for calcium, chloride, glucose, potassium, sodium and urea/BUN at pre dose and 25 hours and 30 minutes post dose. Participants had to fast for at least 8 hours prior to visit. Participants fasted for glucose blood sample. During treatment periods, fasting continued until a light meal was allowed 1 hour post dose.

Blood samples were collected for the assessment of hematology parameters for basophils, eosinophils, lymphocytes, monocytes, TN, platelet count, WBC at pre dose and 25 hours and 30 minutes post dose. Participants had to fast for at least 8 hours prior to visit. During treatment periods, fasting continued until a light meal was allowed 1 hour post dose.

Blood samples were collected for the assessment of hematology parameters for hemoglobin and MCHC at pre dose and 25 hours and 30 minutes post dose. Participants had to fast for at least 8 hours prior to visit. During treatment periods, fasting continued until a light meal was allowed 1 hour post dose.

Blood samples were collected for the assessment of hematology parameters for hematocrit at pre dose and 25 hours and 30 minutes post dose. Participants had to fast for at least 8 hours prior to visit. During treatment periods, fasting continued until a light meal was allowed 1 hour post dose.

Blood samples were collected for the assessment of hematology parameter for MCH at pre dose and 25 hours and 30 minutes post dose. Participants had to fast for at least 8 hours prior to visit. During treatment periods, fasting continued until a light meal was allowed 1 hour post dose.

Blood samples were collected for the assessment of hematology parameter for MCV at pre dose and 25 hours and 30 minutes post dose. Participants had to fast for at least 8 hours prior to visit. During treatment periods, fasting continued until a light meal was allowed 1 hour post dose.

Blood samples were collected for the assessment of hematology parameter for RBC at pre dose and 25 hours and 30 minutes post dose. Participants had to fast for at least 8 hours prior to visit. During treatment periods, fasting continued until a light meal was allowed 1 hour post dose.

An AE is any untoward medical occurrence in a participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. An SAE is any untoward medical occurrence that, at any dose results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/birth defect and medically significant.

Analysis LTB4 levels in the blood samples indicated the extent of LTB4 inhibition following administration of GSK2190915 compared to Baseline. Baseline was the pre dose value. Change from Baseline was calculated by subtracting the Baseline values from the individual post-randomization values.

Analysis of LTE4 levels in the urine samples indicated the extent of LTE4 inhibition following administration of GSK2190915 compared to Baseline. Baseline was the pre dose value. Change from Baseline was calculated by subtracting the Baseline values from the individual post-randomization values.

PK samples were supposed to be collected at 10 minutes prior to the exercise challenge at 2 hours, 9.5 hours and 24 hours.