Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Phase 2, Multi-Center, Randomized, Double-Blind, Placebo-Controlled Study Comparing the Safety and Efficacy of Subcutaneous Injections of ABT-874 vs. Placebo in Subjects With Moderate to Severe Chronic Plaque Psoriasis
Brief Summary: The purpose of the study is to assess the safety and efficacy of ABT-874 in the treatment of moderate to severe chronic plaque psoriasis.


Options:
A: Inclusion Criteria:

* Present with chronic plaque psoriasis based on an investigator confirmed diagnosis of chronic psoriasis vulgaris for at least 6 months prior to baseline and meet the following criteria:

  * plaque psoriasis involving ≥10% body surface area (BSA) and absolute PASI score ≥12 in affected skin at screening and baseline
  * sPGA score of ≥3 at screening and baseline
* Candidate for biologic treatment for psoriasis.

Exclusion Criteria:

* Have a history or presence of cardiovascular, respiratory, hepatic, gastrointestinal, endocrine, hematological, neurological, or neuropsychiatric disorders or any other serious and/or unstable illness that, in the opinion of the investigator, could constitute a risk when taking investigational product or could interfere with the interpretation of data.
* Breastfeeding or nursing (lactating) women.
* Have had serious, opportunistic, or chronic/recurring infection within 6 months prior to screening.
* Have received live vaccine(s) (included attenuated live vaccines) within 1 month of screening or intend to during the study.
* Have any other skin conditions (excluding psoriasis) that would affect interpretation of the results.
* Have received systemic nonbiologic psoriasis therapy or phototherapy within 28 days prior to baseline.
* Have received topical psoriasis treatment within 14 days prior to baseline.
* Have received anti-tumor necrosis factor (TNF) biologics, or anti-interleukin (IL)-17 targeting biologics within 8 weeks prior to baseline.
* Have previous exposure to any biologic therapy targeting IL-23 (including ustekinumab), either licensed or investigational (previous briakinumab use is permitted).
B: Inclusion criteria:

1. Men or women ≥ 18 and ≤ 75 years of age at time of screening
2. Stable moderate to severe plaque psoriasis for at least 6 months before baseline
3. Moderate to severe psoriasis defined at screening and baseline by:

   Body surface area (BSA) affected by plaque psoriasis of 10% or greater, and PASI score of 12 or greater, and static physician's global assessment score of 3 or greater
4. No known history of active tuberculosis
5. Subject is a candidate for systemic therapy or phototherapy procedures
6. Previous failure, inadequate response, intolerance, or contraindication to at least 1 conventional anti-psoriatic systemic therapy

Exclusion Criteria:

1. Forms of psoriasis or other skin conditions at the time of the screening visit (eg, eczema)
2. Ongoing use of prohibited treatments
3. Prior use of 2 or more biologics for treatment of psoriasis
4. Previous receipt of adalimumab or a biosimilar of adalimumab

Other Inclusion/Exclusion criteria may apply
C: Inclusion Criteria for cases:

* past or current treatement with TNF-a antagonists
* either lymphoma severe bacterial infection opportunistic infection

Inclusion Criteria for controls:

* matched with cases by gender, age (+/- 5 years), underlying disease (rheumatoid arthritis, ankylosing spondylitis, Crohn's disease, or psoriasis)
* past or current treatement with TNF-a antagonists
* no lymphoma, severe bacterial infection, opportunistic infection (same as case)

Exclusion Criteria:

* none
D: Inclusion Criteria:

* Subject was age 18 or older and in good health (Investigator discretion) with a recent stable medical history.
* Subject had a clinical diagnosis of psoriasis for at least 6 months, and had moderate to severe plaque psoriasis

Exclusion Criteria:

* Subject had previously received systemic or biologic anti-IL-12 therapy
* Subject cannot discontinue systemic therapies and/or topical therapies for the treatment of psoriasis and cannot avoid UVB or PUVA phototherapy
* Subject is taking or requires oral or injectable corticosteroids
* Subject considered by the investigator, for any reason, to be an unsuitable candidate for the study
* Female subject who is pregnant or breast-feeding or considering becoming pregnant

Answer: D