A Dose Finding Study to Investigate the Safety and Effectiveness of GSK1070806 in Adult Participants With Moderate to Severe Atopic Dermatitis

EASI scoring system is standardized clinical tool for assessment of extent (area) \& severity of atopic dermatitis(AtD). Severity of clinical signs of AtD (erythema, induration/papulation, excoriation \& lichenification) scored separately for each of 4 body regions (head \& neck, upper limbs, trunk \& lower limbs) on 4-point scale: 0=absent;1=mild;2=moderate;3=severe. EASI area score was based upon % body surface area with AtD in body region:0=0%, 1=1-9%;2=10-29%;3=30-49%;4=50-69%;5=70-89%;6=90-100%. Final EASI score was obtained by multiplying EASI area scores (0-6) with severity scores (0-3) of all 4 body regions; it ranges from 0 to 72, with higher scores= more severe or extensive condition. Baseline=last value/assessment before first dose of ST (Day1) based on date \& ToA \& treatment. Change from Baseline was calculated by subtracting Baseline value from the post-dose visit value. Percent CFB was calculated by dividing CFB value by Baseline value and multiplying it by 100.

EASI scoring system is standardized clinical tool for assessment of extent (area) \& severity of atopic dermatitis(AtD). Severity of clinical signs of AtD (erythema, induration/papulation, excoriation \& lichenification) scored separately for each of 4 body regions (head \& neck, upper limbs, trunk \& lower limbs) on 4-point scale: 0=absent;1=mild;2=moderate;3=severe. EASI area score was based upon % body surface area with AtD in body region:0=0%, 1=1-9%;2=10-29%;3=30-49%;4=50-69%;5=70-89%;6=90-100%. Final EASI score was obtained by multiplying EASI area scores (0-6) with severity scores (0-3) of all 4 body regions; it ranges from 0 to 72, with higher scores= more severe or extensive condition. Baseline was the last value/assessment before first dose of study treatment (Day1) based on date \& time of assessment \& treatment.

The Investigator Global Assessment (IGA) is a clinical tool for assessing the current state/severity of a participant's atopic dermatitis. It is a static 5-point morphological assessment of overall disease severity determined by the investigator, sub-investigator, or trained healthcare professional with required qualifications on a scale of 0 to 4 where, 0=clear, 1=almost clear, 2=mild, 3=moderate, and 4=severe. Higher score indicates high severity of disease. IGA 0/1 responders are participants whose IGA score is 'Clear' (0) or 'Almost Clear' (1) and had a reduction of >=2 points from Baseline at Week 16. Baseline was the last value/assessment before the first dose of study treatment (Day 1) based on date and time of the assessment and treatment.

PP-NRS is a patient reported measure of pruritus (itch) intensity assessing worst itch (in the past 24 hours). The values were evaluated using an 11-point scale (from 0 to 10), with 0 being no itch and 10 being the worst imaginable itch. Baseline was averaged from daily values from Day -7 to Day -1 prior to first dose of study treatment (Day 1); post-dose visit i.e. Week 16 used average of 7 daily values from Days 106 to 112 prior to Week 16 (Day 113). Change from Baseline (CFB) was calculated by subtracting Baseline value from the post-dose (PD) visit (Week 16) value.

PP-NRS is a patient reported measure of pruritus (itch) intensity assessing worst itch (in the past 24 hours). The values were evaluated using an 11-point scale (from 0 to 10), with 0 being no itch and 10 being the worst imaginable itch. Baseline was averaged from daily values from Day -7 to Day -1 prior to first dose of study treatment (Day 1); post-dose visit i.e. Week 16 used average of 7 daily values from Days 106 to 112 prior to Week 16 (Day 113).

EASI scoring system is standardized clinical tool for assessment of extent (area) \& severity of atopic dermatitis(AtD). Severity of clinical signs of AtD (erythema, induration/papulation, excoriation \& lichenification) scored separately for each of 4 body regions (head \& neck, upper limbs, trunk \& lower limbs) on 4-point scale: 0=absent;1=mild;2=moderate;3=severe. EASI area score was based upon % body surface area with AtD in body region:0=0%, 1=1-9%;2=10-29%;3=30-49%;4=50-69%;5=70-89%;6=90-100%. Final EASI score was obtained by multiplying EASI area scores (0-6) with severity scores (0-3) of all 4 body regions; it ranges from 0 to 72, with higher scores= more severe or extensive condition. Baseline was the last value/assessment before first dose of study treatment (Day 1) based on date \& time of assessment \& treatment.

SCORAD was used to standardize the extent and severity of AtD. It consisted of 3 components i.e., A=extent or affected BSA assessed as a % of each defined body area and reported as sum of all areas, with a maximum score of 100%.B=severity of 6 specific symptoms of AtD (redness, swelling, oozing/crusting, excoriation, skin thickening/lichenification, dryness) assessed using following scale: none=0,mild=1,moderate=2, or severe=3 (for a maximum of 18 total points) \& C=pruritus (itch) \& sleep loss scored by participants on VAS, where "0"=no itch(or no sleeplessness) \& "10"=worst imaginable itch(or sleeplessness) with a maximum score of 20. SCORAD total score was calculated using these 3 aspects: extent (A: 0-100), severity (B: 0-18), \& subjective symptoms (C: 0-20) using the formula: A/5 + 7*B/2+ C. SCORAD total score ranged from 0 to 103, where 0=no disease to 103=severe disease. Higher values of SCORAD=worse outcome.

The BSA assessment estimates the extent of disease or skin involvement with respect to AtD and is expressed as a percentage of total body surface area. BSA were determined by the Investigator or designee using the participant's palm = 1% rule i.e. the surface area of the participant's palm (including fingers) is approximately 1% of the total BSA. Investigators applied this rule to quickly estimate the percentage of skin affected by AtD without complex calculations (for example- if the affected area equals 10 palms, this corresponded to approximately 10% BSA involvement). Baseline was the last value/assessment before the first dose of study treatment (Day 1) based on date and time of the assessment and treatment. Change from Baseline was calculated by subtracting Baseline value from the post-dose visit (Week 16) value.

SCORAD was used to standardize the extent and severity of AtD. It consisted of 3 components i.e., A=extent or affected BSA assessed as a % of each defined body area and reported as sum of all areas, with a maximum score of 100%.B=severity of 6 specific symptoms of AtD (redness, swelling, oozing/crusting, excoriation, skin thickening/lichenification, dryness) assessed using following scale: none=0,mild=1,moderate=2, or severe=3 (for a maximum of 18 total points) \& C=pruritus (itch) \& sleep loss scored by participants on VAS, where "0"=no itch(or no sleeplessness) \& "10"=worst imaginable itch(or sleeplessness) with a maximum score of 20. SCORAD total score was calculated using these 3 aspects: extent (A: 0-100), severity (B: 0-18), \& subjective symptoms (C: 0-20) using the formula: A/5 + 7*B/2+ C. SCORAD total score ranged from 0 to 103, where 0=no disease to 103=severe disease. Higher values of SCORAD=worse outcome.

SP-NRS is a patient reported measure assessing worst level of skin pain (in the past 24 hours). The values were evaluated using an 11-point scale from 0 to 10, with 0 being no pain and 10 being the worst pain imaginable. Baseline was averaged from daily values from Day -7 to Day -1 prior to first dose of study treatment (Day 1); post-dose visit i.e. Week 16 used average of 7 daily values from Days 106 to 112 prior to Week 16 (Day 113). Change from Baseline was calculated by subtracting Baseline value from the post-dose visit (Week 16) value.

The PROMIS sleep disturbance 8b is a PRO instrument designed to assess participant's self-reported sleep disturbance for which the recall period is the past 7 days. It measures perceptions of sleep quality, depth, and restoration associated with sleep. It contains 8 questions (hence "8b"), these questions are rated using 5-point verbal rating scale (i.e., 1 = very much to 5 = not at all). These are summed to get a total score which ranges from 8 to 40, with higher scores indicating greater severity of sleep disturbance. Baseline was the last value/assessment before the first dose of study treatment (Day 1) based on date and time of the assessment and treatment. Change from Baseline was calculated by subtracting Baseline value from the post-dose visit (Week 16) value.

The FACIT-Fatigue scale is a short, 13-item measure that assesses participant's self-reported fatigue and its associated impact for daily activities over the past week. The items are rated on a 5-point Likert-type scale: (i.e., 0 = very much to 4 = not at all), where a higher score indicates a better outcome (no fatigue). The total score was derived by summing rating of all 13 items, which ranges from 0 to 52, with 0 being the worst possible score and 52 indicating no fatigue. Higher score indicates an improvement in the participant's health status and decrease in the score indicates worse fatigue/quality of life (QoL). Baseline was the last value/assessment before the first dose of study treatment (Day 1) based on date and time of the assessment and treatment. Change from Baseline was calculated by subtracting Baseline value from the post-dose visit (Week 16) value.

The BFI is a self-administered questionnaire developed to assess fatigue severity. The BFI has 9 items. BFI- Item 3 assesses the worst level of fatigue during the past 24 hours. Participants report their worst level of fatigue daily, for the previous 24 hours, using a numerical rating scale ranging from 0 (no fatigue) to 10 (as bad as you can imagine). The BFI item 3 score ranges from 0 to 10, higher score indicates worst outcome. Baseline was averaged from daily values from Day -7 to Day -1 prior to first dose of study treatment (Day 1); post-dose visit i.e. Week 16 used average of 7 daily values from Days 106 to 112 prior to Week 16 (Day 113). Change from Baseline was calculated by subtracting Baseline value from the post-dose visit (Week 16) value.

POEM is a 7-item questionnaire that assesses symptoms of dryness, itching, flaking, cracking, sleep loss, bleeding, and weeping over the last week. Each item is scored from 0 to 4, where 0 = 'no days', 1 = '1 to 2 days', 2 = '3 to 4 days', 3 = '5 to 6' days, and 4 = 'every day'). The total score was derived by summing scores of all 7-items. Total score ranges from 0 (absent disease) to 28 (severe disease). Higher score indicates poor QoL. Baseline was the last value/assessment before the first dose of study treatment (Day 1) based on date and time of the assessment and treatment. Change from Baseline was calculated by subtracting Baseline value from the post-dose (Week 16) visit value.

The DLQI is a 10-item questionnaire that asks participants to evaluate the degree that their skin disease has affected their QoL. Each question was evaluated on a 4-point scale (range 0 to 3) where, 0 = not at all, 1= a little, 2= a lot, 3= very much, higher scores indicated more impact on quality of life. Scores from all 10 questions were added up to give DLQI total score. The total DLQI score ranges from 0 (not at all) to 30 (very much). Higher scores indicated more impaired quality of life. Baseline was the last value/assessment before the first dose of study treatment (Day 1) based on date and time of the assessment and treatment. Change from Baseline was calculated by subtracting Baseline value from the post-dose visit (Week 16) value.

HADS was a validated 14-item self-reported questionnaire to assess states of anxiety and depression over the past week. HADS consisted of 2 subscales: HADS-Anxiety (HADS-A) scale and HADS-Depression (HADS-D) scale. HADS-A assessed state of generalized anxiety. It comprised of 7 items. Each item was rated on a 4-point scale, with scores ranging from 0 (no, not at all) to 3 (yes, definitely), where higher scores indicated more anxiety/depression symptoms. HADS-A total score was calculated as the sum of all 7 items with score ranging from 0 (no presence of anxiety) to 21 (severe feeling of anxiety); higher score indicated greater severity of anxiety. Baseline was the last value/assessment before the first dose of study treatment (Day 1) based on date and time of the assessment and treatment. Change from Baseline was calculated by subtracting Baseline value from the post-dose visit (Week 16) value. Data of HADS-anxiety subscale score has been presented.

HADS was a validated 14-item self-reported questionnaire to assess states of anxiety and depression over the past week. HADS consisted of 2 subscales: HADS-Anxiety (HADS-A) scale and HADS-Depression (HADS-D) scale. HADS-D assessed state of depression. It comprised of 7 items. Each item was rated on a 4-point scale, with scores ranging from 0 (no, not at all) to 3 (yes, definitely), where higher scores indicated more anxiety/depression symptoms. HADS-D total score was calculated as the sum of all 7 items with score ranging from 0 (no presence of depression) to 21 (severe feeling of depression); higher score indicated greater severity of depression. Baseline was the last value/assessment before the first dose of study treatment (Day 1) based on date and time of the assessment and treatment. Change from Baseline was calculated by subtracting Baseline value from the post-dose visit (Week 16) value. Data of HADS-depression subscale score has been presented.

The WPAI-AD is a concise,6-item questionnaire that evaluates the impact of atopic dermatitis on both work and daily activities, yielding 4 percentage-based impairment scores, each range from 0 to 100%. Higher values=greater impairment. Calculation of these 4 scores are as follows: 1. Work time missed due to health (Absenteeism) (%)=hours missed due to health divided by (hours missed due to health+hours missed for other reasons+hours actually worked) *100. 2. Impairment while working due to health (Presenteeism) (%)=Question (Q)5 score (from 0 to 10) divided by 10*100. 3. Overall work impairment due to health (%)=Absenteeism+(1-Absenteeism fraction)*Presenteeism. 4. Activity impairment due to health (%)=Q6 score (from 0 to 10) divided by 10*100.Baseline was the last value/assessment before the first dose of study treatment (Day1) based on date and time of the assessment and treatment. CFB was calculated by subtracting Baseline value from the post-dose visit (Week 16) value.

An AE is any untoward medical occurrence in a clinical study participant, temporally associated with use of a study intervention, whether or not considered related to study intervention. Any untoward medical occurrence that, at any dose, results in death, Is life threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, Is a congenital anomaly/birth defect in the offspring of a study participant, abnormal pregnancy outcomes, Is a suspected transmission of any infectious agent via an authorized medicinal product and medically important were categorized as SAE. AESIs of the study drug includes serious and opportunistic infections, serious hypersensitivity reactions and injection site reactions.

Blood samples were collected to analyze hematology parameter: hemoglobin. Baseline was the last value/assessment before the first dose of study treatment (Day 1) based on date and time of the assessment and treatment. Change from Baseline was calculated by subtracting Baseline value from the post-dose visit (Week 16) value.

Blood samples were collected to analyze Hematology Parameters: Basophils, Eosinophils, Leukocytes, Lymphocytes, Monocytes, Neutrophils and Platelets. Baseline was the last value/assessment before the first dose of study treatment (Day 1) based on date and time of the assessment and treatment. Change from Baseline was calculated by subtracting Baseline value from the post-dose visit (Week 16) value.

Blood samples were collected to analyze hematology parameter: erythrocytes. Baseline was the last value/assessment before the first dose of study treatment (Day 1) based on date and time of the assessment and treatment. Change from Baseline was calculated by subtracting Baseline value from the post-dose visit (Week 16) value.

Blood samples were collected to analyze hematology parameter: hematocrit. Baseline was the last value/assessment before the first dose of study treatment (Day 1) based on date and time of the assessment and treatment. Change from Baseline was calculated by subtracting Baseline value from the post-dose visit (Week 16) value.

Blood samples were collected to analyze hematology parameter: Prothrombin International Normalized Ratio. Baseline was the last value/assessment before the first dose of study treatment (Day 1) based on date and time of the assessment and treatment. Change from Baseline was calculated by subtracting Baseline value from the post-dose visit (Week 16) value.

Blood samples were collected to analyze clinical chemical parameters: Alanine Aminotransferase (ALT), Alkaline Phosphatase (ALP), Aspartate Aminotransferase (AST) and Gamma-Glutamyl Transferase (GGT). Baseline was the last value/assessment before the first dose of study treatment (Day 1) based on date and time of the assessment and treatment. Change from Baseline was calculated by subtracting Baseline value from the post-dose visit (Week 16) value.

Blood samples were collected to analyze clinical chemical parameters: Total Bilirubin, Direct Bilirubin, and Creatinine. Baseline was the last value/assessment before the first dose of study treatment (Day 1) based on date and time of the assessment and treatment. Change from Baseline was calculated by subtracting Baseline value from the post-dose visit (Week 16) value.

Blood samples were collected to analyze chemistry parameters: glucose and urea. Baseline was the last value/assessment before the first dose of study treatment (Day 1) based on date and time of the assessment and treatment. Change from Baseline was calculated by subtracting Baseline value from the post-dose visit (Week 16) value.

Blood samples were collected to analyze chemistry parameter: albumin. Baseline was the last value/assessment before the first dose of study treatment (Day 1) based on date and time of the assessment and treatment. Change from Baseline was calculated by subtracting Baseline value from the post-dose visit (Week 16) value.

Blood samples were collected to analyze chemistry parameter: Estimated Glomerular Filtration Rate. Baseline was the last value/assessment before the first dose of study treatment (Day 1) based on date and time of the assessment and treatment. Change from Baseline was calculated by subtracting Baseline value from the post-dose visit (Week 16) value.

The laboratory measurements included hematology and clinical chemistry. The parameters evaluated were albumin, glomerular filtration rate from creatinine adjusted for body surface area, glucose, potassium, sodium, alanine aminotransferase, alkaline phosphatase, aspartate aminotransferase, creatinine, gamma glutamyl transferase, activated partial thromboplastin time, hemoglobin, leukocytes, lymphocytes, neutrophils, platelets, prothrombin international normalized ratio, eosinophils, and fibrinogen. Worst case grade increase from Baseline grade was evaluated for all the laboratory tests that were gradable by NCI CTCAE. Data is presented for only those parameters for which participants had worst case >= Grade 3 abnormalities.