SB705498 Proof of Concept Chamber Challenge in Subjects With Non Allergic Rhinitis

TSS was calculated based on a CDA challenge, done for 1 h in a controlled environmental exposure chamber which was validated for 14+/-5 degree C, <15% relative humidity and 5+/-3 ft/sec air velocity, 1 h and 24 h post dose on Day 1. TSS was calculated as the sum of the response for 3 components of nasal congestion, rhinorrhoea and post nasal drip. It was rated on a 4-point scale ranging from 0 to 3, where: 0=absent, 1=mild, 2=moderate, and 3=severe (symptom hard to tolerate). TSS score ranges from 0-9 with 0 representing an absence of symptoms and higher scores reflecting more severe symptoms. WM for TSS was calculated over the time interval 0 to 60 m after start of CDA challenge by calculating AUC of the TSS via the linear trapezoidal method then dividing by the total duration that the participant took to complete CDA challenge assessments. WM is reported as LS mean.

The individual components of TSS was calculated based on a CDA challenge, done for 1 h in a controlled environmental exposure chamber which was validated for 14+/-5 degree C, <15% relative humidity and 5+/-3 ft/sec air velocity, 1 h and 24 h post dose on Day 1. The individual component of TSS nasal symptoms were nasal congestion, rhinorrhoea (runny nose), and post nasal drip It was rated on a 4-point scale ranging from 0 to 3, where: 0=absent, 1=mild, 2=moderate, and 3=severe (symptom hard to tolerate). The score ranges from 0-3 with 0 representing an absence of symptoms and higher scores reflecting more severe symptoms. WM for TSS was calculated over the time interval 0 to 60 m after start of CDA challenge by calculating AUC of the TSS via the linear trapezoidal method then dividing by the total duration that the participant took to complete CDA challenge assessments. WM is reported as LS mean.

TSS was calculated as the sum of the response for 3 components of nasal congestion, rhinorrhoea and post nasal drip. It was rated on a 4-point scale ranging from 0 to 3, where: 0=absent, 1=mild, 2=moderate, and 3=severe (symptom hard to tolerate). TSS score ranges from 0-9 with 0 representing an absence of symptoms and higher scores reflecting more severe symptoms. For Day 1 to 14 of each study period, participants were asked to keep a diary to record their symptoms whilst at home provided by the clinical unit. Reflective rating represented the symptoms over the proceeding 12 h which was performed once daily in the evening (PM). The PM reflective rating was done approximately 12 h after dosing, but before bedtime. If any of the individual components were missing then the TSS was set to be missing for that participant at that timepoint.

The individual component of TSS nasal symptoms of nasal congestion, rhinorrhoea (runny nose) and post nasal drip was scored on a 4-point scale ranging from 0 to 3, where: 0=absent, 1=mild, 2=moderate, and 3=severe (symptom hard to tolerate). The scores of the individual components of TSS ranges from 0-3 with 0 representing an absence of symptoms and higher scores reflecting more severe symptoms. For Day 1 to 14 of each study period, participants were asked to keep a diary to record their symptoms whilst at home on a diary card provided by the clinical unit. Reflective rating represented the symptoms over the proceeding 12 h which was performed once daily in the PM. The PM reflective rating was done approximately 12 h after dosing, but before bedtime.

The assessment of sneezing was done based on a CDA challenge, for 1 h in a controlled environmental exposure chamber which was validated for 14+/-5 degree C, <15% relative humidity and 5+/-3 ft/sec air velocity, 1 h post dose on Day 1 and 1 h and 24 h post dose on Day 14 (Day 15). Sneezing was scored on a 4-point scale ranging from 0 to 3, where: 0=absent, 1=mild, 2=moderate, and 3=severe (symptom hard to tolerate). The score ranges from 0-3 with 0 representing an absence of symptoms and higher scores reflecting more severe symptoms. It was used to derive the WM CDA challenge value calculated over the time interval 0 to 60 m after start of CDA challenge and the maximum score. WM is reported as LS mean.

Overall AR score was obtained by adding minimal cross-sectional area (MCA) for right and left nostril. MCA1 was captured within the nose at a distance of 0 and 2.2 cm and MCA2 at 2.2 and 5.5 cm. MCA1 and MCA2 were captured simultaneously for each nostril, 3 measurements were obtained from each nostril which resulted in 12 data points. Absolute MCA for all regions in left or right nostril was calculated using the 3 acceptable measurements, calculating average of each of right and left MCA's and also by selecting minimum value from these averages to obtain minimum MCA for left and right nostril. Baseline is defined as the value on Day 1 pre- dose. Change from baseline was calculated by subtracting the baseline (Day 1 pre-dose) values from individual post-randomization values done immediately following CDA challenge. In case of missing baseline or post randomization value, the change from baseline was set to be missing. Adjusted mean is reported as LS mean.

The RQLQ is a 28-item, disease-specific quality of life questionnaire that measures the functional (physical, emotional, and social) problems troublesome to adults with allergies. The RQLQ has 28 questions in 7 domains (activities, sleep, non-nose/eye symptoms, practical problems, nasal symptoms, eye symptoms and emotional). All 28 questions were evaluated by the participant in an assessment diary over 2 weeks of treatment period and was rated on a 7-point severity scale ranging from 0 to 6, where 0=least severe to 6=extremely severe. Overall mean was calculated by summing all 28-item scores and dividing by total number of items in the questionnaire. RQLQ score ranges from 0-6 with 0 representing an absence of symptoms and higher scores reflecting more severe symptoms. Baseline was defined as the value on Day 1 pre- dose. Change from baseline was calculated by subtracting baseline (Day 1 pre-dose) values from individual post-randomization values. Adjusted mean is reported as LS mean.

The assessment of TOSS was done based on a CDA challenge, for 1 h in a controlled environmental exposure chamber which was validated for 14+/-5 degree C, <15% relative humidity and 5+/-3 ft/sec air velocity, 1 h post dose on Day 1 and 1 h and 24 h post dose on Day 14 (Day 15). TOSS was calculated as the sum of the symptom scores for 3 ocular symptoms of itching/burning eyes, tearing/watering eyes, and redness of eyes. It was rated on a 4-point severity scale ranging from 0 to 3, where: 0=absent, 1=mild, 2=moderate and 3=severe (symptom hard to tolerate, interferes with daily activities/sleeping). TOSS score ranges from 0-9 with 0 representing an absence of symptoms and 9 representing severe symptoms. These values were used to derive the WM (s) of the CDA challenge value and the maximum score. WM is reported as LS mean.

Blood samples for pharmacokinetic assessment were collected at pre-dose (0 h), 1, 2, 3 and 24 h post-dose on Day 1 and Day 14 of each period. The area under the plasma concentration-time curves from time zero (pre- dose) to 3 h, AUC (0-3) and the last quantifiable concentration, AUC (0-t) (24 h) was determined using the linear trapezoidal rule for increasing concentrations and the logarithmic trapezoidal rule for decreasing concentrations. The AUC of non-calculable (NC) due to non-quantifiable concentration measured as below lower limit of quantification (NQ) values were imputed by 0.5 x lowest observed AUC (i.e., AUC [0-3]: 0.5 x 6.4; AUC[0-t]: 0.5 x 6.3). Coefficient of variation (CVb [%]) was calculated as, CVb (%) = SQRT (exp [SD2-1]) x 100, where SQRT is the square root, exp is the exponent and SD is the standard deviation of the logarithmically transformed data. Analysis was done on the number of participants with non-missing observations (including imputed NC values).

Blood samples for pharmacokinetic assessment were collected at pre-dose (0 h), 1, 2, 3 and 24 h post-dose on Day 1 and Day 14 of each period. The first occurrence of Cmax was determined directly from the raw concentration-time data on Day 1 and Day 14 where, NQs were imputed to zero or missing and lower limit of quantification was 2.5 nanogram per millilitre (ng /mL). Logarithmically transformed data is reported for Cmax. CVb (%) was calculated as, CVb (%) = SQRT (exp [SD2-1]) x 100, where SD is the standard deviation of the logarithmically transformed data. Analysis was done on the number of participants with non-missing observations (including imputed NC values).

Blood samples for pharmacokinetic assessment were collected at pre-dose (0 h), 1, 2, 3 and 24 h post-dose on Day 1 and Day 14 of each period. Tmax was determined directly from the raw concentration-time data on Day 1 and Day 14 where, NQs were imputed to zero or missing and lower limit of quantification is 2.5 ng /mL. Analysis was done on the number of participants with non-missing observations (including imputed NC values)

An AE is defined as 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 defined as 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, or is a congenital anomaly/birth defect, may jeopardize the participant or may require medical or surgical intervention to prevent one of the other outcomes listed in this definition, associated with liver injury and impaired liver function defined as alanine aminotransferase >=3 x upper limit of normal (ULN), and total bilirubin >=2 x ULN or international normalised ratio >1.5. AEs were classified as potentially drug-related, based on the investigator's judgement.

ECGs were obtained on Day 1 (pre-dose) and Day 14 (pre- dose) of each period. Single 12-lead ECGs was obtained at each timepoint during the study using an ECG machine that automatically calculated the heart rate (HR) and measures PR, QRS, QT, and QTc intervals. Participants with abnormal (not clinically significant), abnormal (clinically significant) and no result were presented.

The PCI values of hematology parameters were obtained by multiplying a fixed factor to the site's upper or lower limit normal ranges for each of the parameter. The factors were white blood cell count (WBC): 0.67 for relative low; 1.82 for relative high, haemoglobin (Hb) relative high: male - 1.03; female - 1.13, haematocrit (relative high): male - 1.02; female - 1.17, platelets: 0.67 for relative low; 1.57 for relative high, neutrophils (relative low): 0.83, lymphocytes (relative low): 0.81.

The PCI values of albumin, calcium, glucose, potassium, sodium and total CO2 were obtained by multiplying a fixed factor to the site's upper or lower limit normal ranges for each of the parameter. The factors were albumin (relative low): 0.86, calcium: 0.91 for relative low; 1.06 for relative high, glucose: 0.71 for relative low; 1.41 for relative high, potassium: 0.86 for relative low; 1.10 for relative high, sodium: 0.96 for relative low; 1.03 for relative high and total CO2: 0.86 for relative low; 1. 14 for relative high.

The PCI values of clinical chemistry parameters were creatinine: low- male is <75 micromoles per litre (mcmol/L); low- female is <65 mcmol/L; high- male >110 mcmol/L; high- female >95 mcmol/L, BUN: high is >1.5 x ULN millimole per litre (mmol/L), uric acid: low- male is <180 mcmol/L; low- female is <120 mcmol/L; high- male >480 mcmol/L; high- female >420 mcmol/L, cholesterol: low is <3.9 mmol/L; high is >6.5 mmol/L [if age <=40, if age >40- high is >6.55 mmol/L], triglycerides: low- <0.5 mmol/L; high- >2.0 mmol/L, LDH: >220 units per lire (U/L). For high alanine aminotransferase (ALT); aspartate aminotransferase (AST); alkaline phosphatase is >=2 x ULN U/L. Total bilirubin high is >=1.5 x ULN mcmol/L, gamma glutamyltransferase (GGT) high: male- >60 U/L; female > 40 U/L.

The PCI values of vital signs were SBP: <85 and >160 millimetres of mercury (mmHg), DBP of <45 and >100 mmHg, HR of <40 and >110 beats per minute (bpm) and body temperature of <36 and >37.5oC.