Safety and Efficacy Study of Adalimumab in the Treatment of Plaque Psoriasis

The percentage of participants with a greater than or equal to 75% reduction (improvement) in Psoriasis Area and Severity Index (PASI) score at Week 12. PASI is a composite measure of the level of erythema (redness of the skin), induration (hardening of the skin), and desquamation (peeling of the skin) on 4 sites (head, upper extremities, trunk, and lower extremities), each of which are rated on a 5-point scale from 0 (no symptoms) to 4 (very marked). The possible range for PASI score is 0 to 72, with the highest score representing complete erythroderma of the severest possible degree; a decrease in score indicates improvement.

Time frame: Week 12

Population: Intent to Treat Population A (ITT\_A): all participants who were randomized at Week 0 (Baseline); Non-responder imputation (NRI): any participant who had a missing value at a specific visit as non-responder for that visit.

Short Form-36 is a generic 36-item questionnaire measuring health-related quality of life (HRQL) covering 2 summary measures: physical component summary (PCS) and mental component summary (MCS). The SF-36 consists of 8 subscales. The PCS is represented by 4 subscales: physical function, role limitations due to physical problems, bodily pain, and general health perception. The MCS is represented by 4 subscales: vitality, social function, role limitations due to emotional problems, and mental health. Participants self-report on items in a subscale that have choices per item. Summations of item scores of the same subscale give the subscale scores, which were transformed into a range from 0 to 100; zero= worst HRQL, 100=best HRQL. PCS and MCS scores were constructed as a T-score with a mean of 50 and standard deviation of 10 and no minimum or maximum score. The difference from baseline to week 12 in SF-36 PCS and MCS was calculated.

Time frame: Baseline to Week 12

Population: ITT\_A: all participants that were randomized in Week 0 (Baseline); LOCF: used the completed evaluation from the previous visit within the particular period for efficacy measures assessed to impute missing data at later visits in the same period. Baseline efficacy evaluations were not carried forward.

Short Form-36 is a generic 36-item questionnaire measuring health-related quality of life (HRQL) covering 2 summary measures: physical component summary (PCS) and mental component summary (MCS). The SF-36 consists of 8 subscales. The PCS is represented by 4 subscales: physical function, role limitations due to physical problems, bodily pain, and general health perception. The MCS is represented by 4 subscales: vitality, social function, role limitations due to emotional problems, and mental health. Participants self-report on items in a subscale that have choices per item. Summations of item scores of the same subscale give the subscale scores, which were transformed into a range from 0 to 100; zero= worst HRQL, 100=best HRQL. PCS and MCS scores were constructed as a T-score with a mean of 50 and standard deviation of 10 and no minimum or maximum score. The difference from baseline to week 12 in SF-36 PCS and MCS was calculated.

Time frame: Baseline to Week 24

Population: ITT\_B: all participants who received at least 1 dose of study drug in Period B; LOCF: used the completed evaluation from the previous visit within the particular period for efficacy measures assessed to impute missing data at later visits in the same period. Baseline efficacy evaluations were not carried forward.

The DLQI measures how much a subject's skin problem affected their life over the last week. The possible range for DLQI was 0 to 30, with a higher score indicating a more impaired quality of life; a decrease in score indicates improvement.

Time frame: Baseline, Week 3, and Week 12

Population: ITT\_A: all participants that were randomized in Week 0 (Baseline); NRI: any participant who had a missing value at a specific visit as non-responder for that visit.

The DLQI measures how much a participant's skin problem affected their life over the last week. The possible range for DLQI was 0 to 30, with a higher score indicating a more impaired quality of life; a decrease in score indicates improvement.

Time frame: Week 16 and Week 24

Population: ITT\_B: all participants who received at least 1 dose of study drug in Period B; NRI: any participant who had a missing value at a specific visit as non-responder for that visit.

The DLQI measures how much a subject's skin problem affected their life over the last week. The possible range for DLQI was 0 to 30, with a higher score indicating a more impaired quality of life; a decrease in score indicates improvement.

Time frame: Baseline, Week 3, and Week 12

Population: ITT\_A: all participants that were randomized in Week 0 (Baseline); NRI: any participant who had a missing value at a specific visit as non-responder for that visit.

The DLQI measures how much a participant's skin problem affected their life over the last week. The possible range for DLQI was 0 to 30, with a higher score indicating a more impaired quality of life; a decrease in score indicates improvement.

Time frame: Week 16 and Week 24

Population: ITT\_B: all participants who received at least 1 dose of study drug in Period B; NRI: any participant who had a missing value at a specific visit as non-responder for that visit.

The percentage of participants with a greater than or equal to 50%, 90%, or 100% reduction (improvement) in Psoriasis Area and Severity Index (PASI 50/90/100). PASI is a composite measure of the level of erythema (redness of the skin), induration (hardening of the skin), and desquamation (peeling of the skin) on 4 sites (head, upper extremities, trunk, and lower extremities), each of which are rated on a 5-point scale from 0 (no symptoms) to 4 (very marked). The possible range for PASI score is 0 to 72, with the highest score representing complete erythroderma of the severest possible degree; a decrease in score indicates improvement.

Time frame: Weeks 3, 7, and 12

Population: ITT\_A: all participants that were randomized in Week 0 (Baseline); NRI: any participant who had a missing value at a specific visit as non-responder for that visit.

The percentage of participants with a greater than or equal to 50%, 90%, or 100% reduction (improvement) in Psoriasis Area and Severity Index (PASI 50/90/100). PASI is a composite measure of the level of erythema (redness of the skin), induration (hardening of the skin), and desquamation (peeling of the skin) on 4 sites (head, upper extremities, trunk, and lower extremities), each of which are rated on a 5-point scale from 0 (no symptoms) to 4 (very marked). The possible range for PASI score is 0 to 72, with the highest score representing complete erythroderma of the severest possible degree; a decrease in score indicates improvement.

Time frame: Weeks 16, 19, and 24

Population: ITT\_B: all participants who received at least 1 dose of study drug in Period B; NRI: any participant who had a missing value at a specific visit as non-responder for that visit.

The percentage of participants with a greater than or equal to 75% reduction (improvement) in Psoriasis Area and Severity Index (PASI), other than Week 12. PASI is a composite measure of the level of erythema (redness of the skin), induration (hardening of the skin), and desquamation (peeling of the skin) on 4 sites (head, upper extremities, trunk, and lower extremities), each of which are rated on a 5-point scale from 0 (no symptoms) to 4 (very marked). The possible range for PASI score is 0 to 72, with the highest score representing complete erythroderma of the severest possible degree; a decrease in score indicates improvement.

Time frame: Weeks 3 and 7

Population: ITT\_A: all participants that were randomized in Week 0 (Baseline); NRI: any participant who had a missing value at a specific visit as non-responder for that visit.

The percentage of participants with a greater than or equal to 75% reduction (improvement) in Psoriasis Area and Severity Index (PASI). PASI is a composite measure of the level of erythema (redness of the skin), induration (hardening of the skin), and desquamation (peeling of the skin) on 4 sites (head, upper extremities, trunk, and lower extremities), each of which are rated on a 5-point scale from 0 (no symptoms) to 4 (very marked). The possible range for PASI score is 0 to 72, with the highest score representing complete erythroderma of the severest possible degree; a decrease in score indicates improvement.

Time frame: Weeks 16, 19, and 24

Population: Intent to Treat Population B (ITT\_B): all participants who received at least 1 dose of study drug in Period B; NRI: any participant who had a missing value at a specific visit as non-responder for that visit.

The Physician's Global Assessment (PGA) is a 6-point scale used to measure the severity of disease at the time of the physician's evaluation of the participant ranging from 'clear' (meaning no signs of plaque) to 'severe.'

Time frame: Baseline and Weeks 3, 7, and 12

Population: ITT\_A: all participants that were randomized in Week 0 (Baseline); NRI: any participant who had a missing value at a specific visit as non-responder for that visit.

The Physician's Global Assessment (PGA) is a 6-point scale used to measure the severity of disease at the time of the physician's evaluation of the participant ranging from 'clear' (meaning no signs of plaque) to 'severe.'

Time frame: Weeks 16, 19, and 24

Population: ITT\_B: all participants who received at least 1 dose of study drug in Period B; NRI: any participant who had a missing value at a specific visit as non-responder for that visit.

The Physician's Global Assessment (PGA) is a 6-point scale used to measure the severity of disease at the time of the physician's evaluation of the participant ranging from 'clear' (meaning no signs of plaque) to 'severe.'

Time frame: Baseline and Weeks 3, 7, and 12

Population: ITT\_A: all participants that were randomized in Week 0 (Baseline); NRI: any participant who had a missing value at a specific visit as non-responder for that visit.

The Physician's Global Assessment (PGA) is a 6-point scale used to measure the severity of disease at the time of the physician's evaluation of the participant ranging from 'clear' (meaning no signs of plaque) to 'severe.'

Time frame: Weeks 16, 19, and 24

Population: ITT\_B: all participants who received at least 1 dose of study drug in Period B; NRI: any participant who had a missing value at a specific visit as non-responder for that visit.

Psoriasis Area and Severity Index (PASI), is a composite measure of the level of erythema (redness of the skin), induration (hardening of the skin), and desquamation (peeling of the skin) on 4 sites (head, upper extremities, trunk, and lower extremities), each of which are rated on a 5-point scale from 0 (no symptoms) to 4 (very marked). The possible range for PASI score is 0 to 72, with the highest score representing complete erythroderma of the severest possible degree; a decrease in score indicates improvement.

Time frame: Baseline to Week 12

Population: ITT\_A: all participants that were randomized in Week 0 (Baseline); Last observation carried forward (LOCF): used the completed evaluation from the previous visit within the particular period for efficacy measures assessed to impute missing data at later visits in the same period. Baseline efficacy evaluations were not carried forward.

PASI is a composite measure of the level of erythema (redness of the skin), induration (hardening of the skin), and desquamation (peeling of the skin) on 4 sites (head, upper extremities, trunk, and lower extremities), each of which are rated on a 5-point scale from 0 (no symptoms) to 4 (very marked). The possible range for PASI score is 0 to 72, with the highest score representing complete erythroderma of the severest possible degree; a decrease in score indicates improvement.

Time frame: Baseline to Week 24

Population: ITT\_B: all participants who received at least 1 dose of study drug in Period B; LOCF: used the completed evaluation from the previous visit within the particular period for efficacy measures assessed to impute missing data at later visits in the same period. Baseline efficacy evaluations were not carried forward.