SB-705498 Dental Pain Study After Tooth Extraction

Pain intensity was assessed using VAS. These assessments were then summarized to give a weighted mean score. The VAS was a subjective assessment of post-operative pain intensity. The participants rated the pain intensity at the time of assessment by marking a line on a 100 millimeter (mm) (0 to 100 mm) long scale. A line placed on the extreme left (0 mm) indicated no pain and extreme right (100 mm) indicated worst pain imaginable. This scale has no subscales. Only those participants available at the specified time points were analyzed.

Pain intensity was assessed using VRS. Participants also used a 4-point categorical VRS for the subjective assessment of postoperative pain. The score and it corresponding intensity was such that 0= no pain, 1= mild, 2= moderate and 3= severe. The VRS was collected as an independent measure of the participant's pain and was not prospectively correlated to the study participant's numerical score (number of millimeters) on the VAS. Participants were provided with a worksheet with a list of adjectives to read and they were asked to select the word by checking the box that best described their level of pain. The number associated with the adjective chosen by the participant constituted the pain intensity. Baseline (Day 1) value was the value obtained immediately prior to administration of study drug. The change from Baseline was calculated by subtracting the Baseline values from the individual post-randomization values.

Pain intensity was assessed using VAS. The VAS was a subjective assessment of post-operative pain intensity. The participants rated the pain intensity at the time of the assessment by marking a line on a 100 millimeter (mm) (0 to 100 mm) long scale. A line placed on the extreme left (0 mm) indicated no pain and extreme right (100 mm) indicated worst pain imaginable. This scale has no subscales. The Baseline (Day 1) value was the value obtained immediately prior to administration of study drug. The change from Baseline was calculated by subtracting the Baseline values from the individual post-randomization values.

Duration of Analgesic Effect (Time to First Rescue medication from study drug administration) is presented. Ibuprofen 400 mg was provided as rescue medication to be taken as required. The time when the rescue medication was administered was recorded on the case report form.

Participants subjectively assessed their overall impression (global evaluation) of the study medication using a 4-point categorical scale, where 1= poor, 2= fair, 3= good and 4= excellent. Participants were provided with a list of adjectives and were asked to select the word by checking the box that best rated the study medication that they received for pain relief. The number associated with the adjective chosen by the participant constituted the global evaluation score. The study coordinator or designee transcribed the number corresponding to the selected adjective onto the case report form. The Global Evaluation was completed prior to receiving the first rescue medication, at 10 hours post-dose and prior to discharge from the unit.

Pain intensity was assessed using VAS. VAS was a subjective assessment of post-operative pain intensity. Participants rated the pain intensity at the time of assessment by marking a line on a 100 mm (0 to 100 mm) long scale. A line placed on extreme left, i.e., 0 mm indicated no pain and extreme right that is 100 mm indicated worst pain imaginable. This scale has no subscales.

Ibuprofen 400 mg was provided as rescue medication to be taken as required. The time that rescue medication was administered was recorded on the case report form. Number of participants requiring rescue medication up to 10 hour post-dose are presented.

Ibuprofen 400 mg was provided as rescue medication to be taken as required. The time that rescue medication was administered was recorded on the case report form. Number of participants using the second rescue medication from the time the first rescue medication was used are presented.

AE is any untoward medical occurrence in a participant or clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of a medicinal product. For marketed medicinal products, this also includes failure to produce expected benefits (i.e., lack of efficacy), abuse or misuse.

ECGs were recorded with the participant lying supine, having rested in this position for at least 5 minutes before each recording. Full 12 lead ECGs were recorded using an ECG device that automatically calculated the heart rate and measured PR, QRS, RR, QT and QT, QT corrected by Bazett's formula (QTcB) and QT corrected by Fridericia's formula (QTcF) intervals. Paper ECG traces were recorded at a standard paper speed of 25 millimeter/second and gain of 1mVolt/10 millimeter, using 2.5x4 format with lead II rhythm strip. Cardiac intervals were checked by a physician and then transcribed into the case report form. Number of participants with abnormal (not clinically significant [NCS] and clinically significant [CS]) ECG findings are presented.

Continuous ambulatory Holter ECG monitoring was performed for a 24-hour period at screening (Day -14 to Day -1) and from pre-dose (post surgery) to approximately 20 hours post-randomization. Number of participants with second degree atrioventricular block over 24 hours by Holter tape are presented.

Supine SBP and DBP measurements were performed with the participant in a supine position after the participant has rested for at least 5 minutes. Assessment was completed pre-dose and then at 2, 4, 6, 8, 10 and discharge (approximately 24 hour) post randomization. Baseline (Day 1) value was the value obtained immediately prior to administration of study drug. The change from Baseline was calculated by subtracting the Baseline values from the individual post-randomization values.

Tympanic temperature was assessed at screening, pre-dose and then at 2, 4, 6, 8, 10 and discharge (approximately 24 hours) post-Baseline. Temperature was also recorded at the follow-up visit. The Baseline (Day 1) value was the value obtained immediately prior to administration of study drug. The change from Baseline was calculated by subtracting the Baseline values from the individual post-randomization values.

Hematology parameters included hemoglobin, packed cell volume, mean cell hemoglobin, mean cell hemoglobin concentration, red blood cell count, white blood cell (WBC) count, platelets and differential WBC count. Clinical chemistry parameters included sodium, potassium, urea, creatinine, total protein, albumin, total bilirubin, aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase, gamma glutamyl transferase (GGT), lactate dehydrogenase, calcium, magnesium, phosphate, cholesterol, high density lipoprotein cholesterol, triglycerides, glucose and creatinine kinase. Only those parameters for which at least one value of potential clinical concern was reported are presented.

Urinalysis parameters included protein, glucose, ketones, bilirubin, blood, urobilinogen, urine leukocyte esterase (ULE) test for detecting WBC (via dipstick method). The dipstick test gives results in a semi-quantitative manner, and results for urinalysis parameter of urine can be read as negative, Trace, +, ++, +++ and ++++ indicating proportional concentrations in the urine sample. The results above ++ that is ++, +++ and ++++ were reported as abnormal and the corresponding parameters were considered as abnormal parameters. Number of participants with abnormal urinalysis parameters were reported.

Cannulation of the forearm vein was performed prior to surgery for serial pharmacokinetic blood sampling. The cannula was kept patent by means of a 0.9% saline lock. Blood was sampled via the intravenous cannula with 1 mL of blood being withdrawn prior to each sample and discarded. Venipuncture was allowed if necessary (e.g., cannulation failure).

Cannulation of the forearm vein was performed prior to surgery for serial pharmacokinetic blood sampling. The cannula was kept patent by means of a 0.9% saline lock. Blood was sampled via the intravenous cannula with 1 mL of blood being withdrawn prior to each sample and discarded. Venipuncture was allowed if necessary (e.g., cannulation failure).

Cannulation of the forearm vein was performed prior to surgery for serial pharmacokinetic blood sampling. The cannula was kept patent by means of a 0.9% saline lock. Blood was sampled via the intravenous cannula with 1 mL of blood being withdrawn prior to each sample and discarded. Venipuncture was allowed if necessary (e.g., cannulation failure).