Study of Safety, Tolerability, and Efficacy of Secukinumab in Subjects With Moderate to Severe Nail Psoriasis

Percent Change From Baseline in NAPSI Score

The NAPSI is a tool to assess psoriatic nail involvement in patients with nail psoriasis. Each nail is divided with imaginary horizontal and longitudinal lines into quadrants. Each nail is given a score for nail matrix psoriasis (0-4) and nail bed psoriasis (0-4) depending on the presence of any of the features of nail psoriasis in that quadrant. Each nail gets a nail matrix score and a nail bed score, the total of which is the NAPSI score for that nail ranging from 0 to 8. All 10 fingernails are assessed giving a total NAPSI score ranging from 0 to 80. A negative change from baseline indicates improvement.

Time frame: baseline, 16 weeks, 132 weeks

Percentage of Participants Achieving Psoriasis Area and Severity Index 75 (PASI75) and Investigator Global Assessment (IGA Mod 2011) Response 0 or 1 Over Time up to Week 16 of the Treatment Compared to Placebo and Over Time up to Week 132

PASI is a combined assessment of lesion severity and affected area into a single score: 0 (no disease) to 72 (maximal disease). Body is divided into 4 areas for scoring (head, arms, trunk, legs; each area is scored by itself and scores are combined for final PASI. For each area, percent of skin involved is estimated: 0 (0%) to 6 (90-100%), and severity is estimated by clinical signs, erythema, induration and desquamation; scale 0 (none) to 4 (maximum). Final PASI = sum of severity parameters for each area\* area score weight of section (head: 0.1, arms: 0.2 body: 0.3 legs: 0.4). The IGA scale referred exclusively to the participant's disease at the time of the assessment. The scores are: 0 = clear, 1 = almost clear, 2 = mild, 3 = moderate, 4 = severe and 5 = very severe. To be considered IGA responder at any point in time, the patient must have an IGA score of 0 or 1 and have achieved a reduction of at least two points on the IGA scale from baseline.