Please select the eligibility criteria that correspond to the clinical trial below.
Title: Multicenter, Randomized, Double-blind, Placebo-controlled, Parallel-group Study to Evaluate the Efficacy, Safety & Tolerability of Two Doses of ACT-128800, an Oral S1P1 Receptor Agonist, Administered up to Twenty-eight Weeks in Patients With Moderate to Severe Chronic Plaque Psoriasis
Brief Summary: This study will assess the efficacy, safety and tolerability of two doses of ACT 128800 in patients with moderate-to-severe chronic plaque psoriasis.


Options:
A: Inclusion Criteria:

* Presents with chronic plaque psoriasis based on a confirmed diagnosis of chronic psoriasis for at least 6 months prior to randomization
* At least 10% Body Surface Area (BSA) of Psoriasis at screening and at randomization
* Static Physician Global Assessment (sPGA) score of at least 3 and Psoriasis Area and Severity Index (PASI) score of at least 12 at screening and at randomization
* Candidate for phototherapy and/or systemic therapy
* Men must agree to use a reliable method of birth control or remain abstinent during the study
* Women must agree to use reliable birth control or remain abstinent during the study and for at least 12 weeks after stopping treatment

Exclusion Criteria:

* Pustular, erythrodermic, and/or guttate forms of psoriasis
* History of drug-induced psoriasis
* Prior use of etanercept
* Clinically significant flare of psoriasis during the 12 weeks prior to randomization
* Concurrent or recent use of any biologic agent
* Received non-biologic systemic psoriasis therapy or phototherapy (including psoralens and ultraviolet A \[PUVA\], ultraviolet B \[UVB\]) within the previous 4 weeks; or had topical psoriasis treatment within the previous 2 weeks prior to randomization
* Cannot avoid excessive sun exposure or use of tanning booths for at least 4 weeks prior to randomization and during the study
* Have participated in any study with interleukin 17 (IL-17) antagonists, including ixekizumab
* Serious disorder or illness other than plaque psoriasis
* Serious infection within the last 3 months
* Breastfeeding or nursing (lactating) women
B: Inclusion Criteria: - Subjects who completed study 20030115 or 20030117 qualify to enroll into this study (provided that they meet all inclusion/exclusion criteria). - Heterosexually active men and women of child-bearing potential must agree to use a medically acceptable form of contraception throughout the study. - Subject or designee must have the ability to self-inject investigational product. - Subject must be capable of understanding and giving written voluntary informed consent. - Negative serum pregnancy test less than or equal to 14 days prior to the first dose of investigational product in all female subjects (except those surgically sterile or at least 5 years postmenopausal) Exclusion Criteria: - Active guttate, erythrodermic, or pustular psoriasis at the time of the baseline visit - Any adverse event or infection at the time of the baseline visit or at any time during the previous etanercept psoriasis study which, in the opinion of Amgen or the Investigator, would preclude participation in the study - Presence of a serious infection less than or equal to 30 days prior to the baseline visit - Evidence of skin conditions at the baseline visit (e.g., eczema) that would interfere with evaluations of the effect of investigational product on psoriasis - Previous receipt of anti-TNF agent(s) other than etanercept - Receipt of any investigational product(s), other than etanercept, less than or equal to 30 days prior to first dose of investigational product in this study - Receipt of anti-CD4 or diphtheria IL-2 fusion protein less than or equal to 24 weeks prior to first dose of investigational product in this study - Psoralen and ultraviolet A (PUVA) light therapy less than or equal to 14 days prior to first dose of investigational product in this study - Ultraviolet A (UVA) light therapy less than or equal to 14 days prior to first dose of investigational product in this study - Ultraviolet B (UVB) light therapy less than or equal to 14 days prior to first dose of investigational product in this study - Receipt of any other systemic psoriasis therapy or oral or parenteral corticosteroids less than or equal to 14 days prior to first dose of investigational product in this study - Pregnant or breast-feeding females - Significant concurrent medical conditions prior to enrollment, including: uncontrolled hypertension (defined as systolic blood pressure measurement of greater than 180 mm Hg or an untreated diastolic blood pressure of greater than 110 mm Hg); myocardial infarction less than or equal to 52 weeks prior to baseline visit; unstable angina pectoris; uncompensated congestive heart failure; severe pulmonary disease requiring hospitalization or supplemental oxygen therapy; diagnosis of multiple sclerosis or any other demyelinating disease; insulin-dependent diabetes mellitus; history of cancer (other than in-situ cervical cancer or resected cutaneous basal cell or squamous cell carcinoma) less than or equal to 5 years prior to administration of first dose of investigational product; open cutaneous ulcers; known human immunodeficiency virus (HIV), hepatitis B surface antigen (HbsAg) or hepatitis C virus (HCV) positive; any condition that might cause this study to be detrimental to the subject, in the judgment of the investigator.
C: Inclusion Criteria:

* Adult males and females aged 18 to 60 years (inclusive) with moderate to severe chronic plaque psoriasis who require systemic treatment.

Exclusion Criteria:

* Patients with other forms of psoriasis and patients who are currently treated for autoimmune disorders other than psoriasis.
* Systemic or topical treatments for psoriasis other than emollients. Ongoing bacterial, viral or fungal infections.

History or presence of malignancy.

* Additional inclusion and exclusion criteria apply with respect to medical conditions and concomitant treatments which could affect patients' risk from participating in the study.
D: Inclusion Criteria:

* Patients with chronic plaque type psoriasis having body surface area involvement of \> 20%
* Patients of either sex
* Females who have completed their family and are tubectomized or are postmenopausal i.e. no menstrual bleeding over at least 1 year
* Age range 18-65 years

Exclusion Criteria:

* Females of child bearing potential
* H/O hypersensitivity to acitretin
* Impaired hepatic function (serum bilirubin, AST, ALT and alkaline phosphatase \>1.5 times the upper limit of normal)
* Impaired renal function (serum creatinine \>1.5mg% in males and \>1.4 mg% in females)
* Hyperlipidemia
* BMI \>30 kg /m2
* H/O excessive alcohol use
* Diabetes mellitus
* Congestive heart failure
* Ischemic heart disease

Answer: C