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:

Part A:

* Able to provide written informed consent
* Healthy male or female between 18 to 45 years of age, inclusive at the time of screening
* Additional inclusion criteria apply

Part B:

* 18 - 55 years old inclusive at Screening
* Active but clinically stable, plaque psoriasis
* Psoriasis involving ≥ 10% of the body surface area
* A minimum PASI score of ≥ 10 obtained during the screening period
* Additional inclusion criteria apply

Exclusion Criteria:

Part A:

* History or evidence of a clinically significant disorder (including but not limited to cardiopulmonary, oncologic, renal, metabolic, hematologic or psychiatric), condition or disease that, in the opinion of the Investigator and Amgen physician would pose a risk to subject safety or interfere with the study evaluation, procedures or completion
* Underlying condition that predisposes the subject to infections (eg, uncontrolled diabetes - HbA1c \> 7%, history of splenectomy)
* Additional exclusion criteria apply

Part B:

* Active guttate, erythrodermic, or pustular psoriasis at the time of the screening visit
* Evidence of skin conditions other than psoriasis (eg, eczema) at the time of the screening visit or between the screening visit and study drug initiation that would interfere with evaluations of the effect of investigational product on psoriasis
* Any condition that, in the judgment of the investigator, might cause this study to be detrimental to the subject
* Additional exclusion criteria apply
B: Inclusion Criteria:

* Mild to moderate chronic plaque psoriasis (psoriasis vulgaris), with the duration of at least 6 months;
* A target plaque of at least 9 sq. cm.

Exclusion Criteria:

* Demonstrates "rebound" or "flare" of chronic plaque psoriasis;
* Non plaque form of psoriasis;
* Currently have or history of psoriatic arthritis;
* Current drug induced psoriasis;
* Currently on systemic therapy or was on systemic therapy for psoriasis within the previous 6 months;
* Currently on phototherapy for psoriasis or was on phototherapy within the previous 3 months
C: Inclusion Criteria:

* Diagnosis of Psoriasis for 6 mo.
* BSA 10%, PASI 12 or above, PGA 3 or above

Exclusion Criteria:

* Previous exposure to either etanercept or ABT-874
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