A Study of Picankibart in Patients With Active Psoriatic Arthritis

The ACR20 response is defined as ≥20% improvement in swollen joint count (66 joints) and tender joint count (68 joints) and ≥20% improvement in 3 of following 5 assessments: participant's assessment of pain using Visual Analog Scale (VAS; 0-100 millimeter [mm], 0 mm=no pain and 100 mm=worst possible pain), participant's global assessment of disease activity by using VAS (scale ranges from 0 mm to 100 mm, [0 mm= very well to 100 mm= very poor]), physician's global assessment of disease activity using VAS (scale ranges from 0 to 100), [0 = no arthritis to 100 = extremely active arthritis], participant's assessment of physical function measured by Health Assessment Questionnaire-Disability Index (HAQ-DI, defined as a 20-question instrument assessing 8 functional areas. The derived HAQ-DI ranges from 0, indicating no difficulty, to 3, indicating inability to perform a task in that area) and C-reactive protein (CRP).

The DAS28-CRP is a measure of disease activity based on swollen and tender joint counts in 28 joints, CRP and the participant's global assessment of disease activity. The range of DAS28-CRP score is 0-10. Higher score means more disease activity.

The ACR50 response is defined as ≥50% improvement in swollen joint count (66 joints) and tender joint count (68 joints) and ≥50% improvement in 3 of following 5 assessments: participant's assessment of pain using Visual Analog Scale (VAS; 0-100 millimeter [mm], 0 mm=no pain and 100 mm=worst possible pain), participant's global assessment of disease activity by using VAS (scale ranges from 0 mm to 100 mm, [0 mm= very well to 100 mm= very poor]), physician's global assessment of disease activity using VAS (scale ranges from 0 to 100), [0 = no arthritis to 100 = extremely active arthritis], participant's assessment of physical function measured by Health Assessment Questionnaire-Disability Index (HAQ-DI, defined as a 20-question instrument assessing 8 functional areas. The derived HAQ-DI ranges from 0, indicating no difficulty, to 3, indicating inability to perform a task in that area) and C-reactive protein (CRP).

The ACR70 response is defined as ≥70% improvement in swollen joint count (66 joints) and tender joint count (68 joints) and ≥70% improvement in 3 of following 5 assessments: participant's assessment of pain using Visual Analog Scale (VAS; 0-100 millimeter [mm], 0 mm=no pain and 100 mm=worst possible pain), participant's global assessment of disease activity by using VAS (scale ranges from 0 mm to 100 mm, [0 mm= very well to 100 mm= very poor]), physician's global assessment of disease activity using VAS (scale ranges from 0 to 100), [0 = no arthritis to 100 = extremely active arthritis], participant's assessment of physical function measured by Health Assessment Questionnaire-Disability Index (HAQ-DI, defined as a 20-question instrument assessing 8 functional areas. The derived HAQ-DI ranges from 0, indicating no difficulty, to 3, indicating inability to perform a task in that area) and C-reactive protein (CRP).

HAQ-DI measures improvement in physical function/disability. It is defined as a 20-question instrument assessing 8 functional areas. The derived HAQ-DI ranges from 0, indicating no difficulty, to 3, indicating inability to perform a task in that area.

The SF-36 Health determined participants' overall quality of life by assessing 1) limitations in physical functioning due to health problems; 2) limitations in usual role because of physical health problems; 3) bodily pain; 4) general health perceptions; 5) vitality; 6) limitations in social functioning because of physical or emotional problems; 7) limitations in usual role due to emotional problems; and 8) general mental health. Items 1-4 comprise the physical component of the SF-36. Scores on each item were summed and averaged (range = 0-100) and a positive change from Baseline indicates improvement.

Percentage of participants with complete resolution of enthesitis (inflammation at tendon/ligament attachments) or dactylitis (sausage-digit swelling).

Percentage of participants who achieve at least 75% or 90% or 100% reduction in Psoriasis Area and Severity Index (PASI) score, assessing skin lesion severity in psoriatic arthritis patients.

The vdH-mTSS is a measure of change in joint health. X-rays of hands and feet are obtained at screening, Week 26 and Week 56. Totals for hands and feet for erosion scores (range 0 to 320) and joint space narrowing scores (range 0 to 208) were calculated and added to obtain the vdH-mTSS (range = 0 [normal] to 528 [maximal disease]). An increase in vdH-mTSS from baseline represents disease progression and/or joint worsening.

An AE is any untoward medical occurrence, which does not necessarily have a causal relationship with treatment.

An SAE is an AE that results in death, is life-threatening, results in or prolongs hospitalization, results in congenital anomaly, persistent or significant disability/incapacity, spontaneous or elective abortion, or requires intervention to prevent a serious outcome.

Plasma concentration of picankibart is evaluated at each scheduled dosing timepoint. Cmax is the highest concentration of a drug in the blood.

Plasma concentration of picankibart is evaluated at each scheduled dosing timepoint. AUC represents the area under the concentration-time curve and gives insight into the extent of exposure to a drug and its clearance rate from the body.

ADAs are immune system-produced antibodies that specifically bind to therapeutic drugs, potentially altering their pharmacokinetics, efficacy, or safety.

NAbs are ADAs that inhibit the drug's biological function by blocking target interaction.