Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Phase 3, Multi Site, Randomized, Double Blind, Placebo Controlled, Parallel Group Study Of The Efficacy And Safety Of 2 Oral Doses Of CP- 690,550 And 1 Subcutaneous Dose Of Etanercept In Subjects With Moderate To Severe Chronic Plaque Psoriasis
Brief Summary: To evaluate the efficacy of CP-690,550 as compared to etanercept and the safety of CP-690,550 for treatment of moderate to severe chronic plaque psoriasis.


Options:
A: Inclusion Criteria:

* Have had a diagnosis of plaque type psoriasis (psoriasis vulgaris);
* Have plaque-type psoriasis covering at least 10% of total body surface area
* Considered by dermatologist investigator to be a candidate for systemic therapy or phototherapy of psoriasis

Exclusion Criteria:

* Non-plaque or drug induced forms of psoriasis
* Cannot discontinue current systemic and/or topical therapies for the treatment of psoriasis
* Cannot discontinue phototherapy
* Any uncontrolled significant medical condition
B: 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
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: Key Eligibility Criteria

* Male or female
* Have had a diagnosis of plaque-type psoriasis at least 6 months prior to the first administration of study agent (subjects with concurrent psoriatic arthritis may be enrolled).
* Have plaque-type psoriasis covering at least 10% of their total BSA at screening and at the time of the first administration of study agent.
* Have a PGA score of ≥ 3 at screening and at the time of the first administration of study agent.

Answer: A