Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Dose-Ranging And Efficacy Study of LY2439821 (An Anti-IL-17 Antibody) In Patients With Moderate-To-Severe Psoriasis
Brief Summary: The primary purpose for this study is to help answer the following research questions

* The safety of ixekizumab (LY2439821) and any side effects that might be associated with it.
* Whether ixekizumab can help participants with Psoriasis.
* How much ixekizumab should be given to participants.


Options:
A: Key Inclusion Criteria:

* Meeting classification criteria for psoriatic arthritis for a duration of disease of at least 3 months
* Prior failure (inefficacy or intolerance) of therapy with disease-modifying antirheumatic drugs; if patient had prior failure of methotrexate, he or she must have been taking at least 15 mg per week for at least 2 months
* If recent failure(inefficacy or intolerance) of a tumor necrosis factor α-blockade compound, participant must be washed out prior to first dose: 56 days for infliximab and 28 days for etanercept and adalimumab
* Disease activity as defined by a tender joint count of ≥3, swollen joint count of ≥3, and clinically detectable synovitis at screening and Day 01 (prior to infusion)
* Active psoriasis with a qualifying target lesion ≥2 cm in diameter
* Able to undergo magnetic resonance imaging
* Use of appropriate birth control by women of child bearing potential (WOCBP)

Key Exclusion Criteria:

* WOCBP who are unwilling or unable to use an acceptable method to avoid pregnancy for the entire study period and for up to 10 weeks after the last dose of investigational product
* Women who are pregnant or breastfeeding or who plan to become pregnant or to start breastfeeding during the duration of the study
* Women with a positive pregnancy test on enrollment or prior to investigational product administration.
* Participants scheduled for or anticipating joint replacement surgery.
* Those with a recent history of clinically significant drug or alcohol abuse
* Concomitant illness that in the investigator's opinion is likely to require systemic glucocorticosteroid therapy during the study (for example: moderate to severe asthma)
* Current symptoms of severe, progressive, or uncontrolled renal, hepatic, hematologic, pulmonary, cardiac, neurologic, ophthalmologic, or cerebral disease.
* Unwillingness or inability to undergo screening based on current local or country guidelines/standards to evaluate the presence of cancer
* Cancer within the last 5 years
* Current malignancy or signs of possible malignancy detected by screening procedures for which the workup to exclude malignancy has not been completed or malignancy cannot be excluded
* At risk for or history (within 3 years) of tuberculosis
* Any serious bacterial infection within the last 3 months, not treated and resolved with antibiotics, or any chronic bacterial infection (such as, but not limited to, chronic pyelonephritis, osteomyelitis, and bronchiectasis)
* Evidence of active or latent bacterial or viral infection infections at the time of potential enrollment
* Herpes zoster or cytomegalovirus resolving less than 2 months prior to signing informed consent
* Receipt of any live vaccines within 3 months of the anticipated first dose of study medication or anticipation of the need for a live vaccine at any time during and for 3 months after the duration of the study

Long-term period participants: Must have met eligibility criteria for short-term period and completed short-term (24-week) period of the study
B: Inclusion criteria:

* Male or female patients. Women of childbearing potential\* must be ready and able to use highly effective methods of birth control per ICH M3(R2) that result in a low failure rate of less than 1% per year when used consistently and correctly. A list of contraception methods meeting these criteria is provided in the patient information.

  \*Women of childbearing potential are defined as:
  * having experienced menarche and
  * not postmenopausal (12 months with no menses without an alternative medical cause) and
  * not permanently sterilized (e.g., tubal occlusion, hysterectomy, bilateral oophorectomy or bilateral salpingectomy).
* Age ≥ 18 years at screening
* Have a diagnosis of chronic plaque psoriasis (with or without psoriatic arthritis) for at least 6 months before the first administration of study drug. Duration of diagnosis may be reported by the patient.
* Have stable moderate to severe chronic plaque psoriasis with or without psoriatic arthritis at both Screening and Baseline (Randomization):

  * Have an involved body surface area (BSA) ≥ 10% and
  * Have a Psoriasis Area and Severity Index (PASI) score ≥ 12 and
  * Have a static Physician Global Assessment (sPGA) score of ≥ 3.
* Must be candidates for systemic therapy or phototherapy for psoriasis treatment, as assessed by the investigator
* Must be candidates for treatment with adalimumab (Humira®) according to local label as confirmed by the investigator.
* Signed and dated written informed consent prior to admission to the study in accordance with GCP and local legislation

Exclusion criteria:

* Patients with

  * non-plaque forms of psoriasis (including guttate, erythrodermic, or pustular)
  * current drug-induced psoriasis (including an exacerbation of psoriasis from beta blockers, calcium channel blockers, or lithium)
  * active ongoing inflammatory diseases other than psoriasis that might confound trial evaluations according to investigator's judgment
* Previous exposure to ABBV-066
* Previous exposure to adalimumab (Humira®)
* Currently enrolled in another investigational study or less than 30 days or more from screening since completing another investigational drug or device study.
* Use of any restricted medication or any drug considered likely to interfere with the safe conduct of the study.
* Major surgery performed within 12 weeks prior to randomization or planned within 12 months after screening (e.g. hip replacement, removal aneurysm, stomach ligation).
* Known chronic or relevant acute infections, such as active tuberculosis (TB), human immunodeficiency virus (HIV) or viral hepatitis; QuantiFERON® TB test or purified protein derivative (PPD) skin test will be performed according to local labelling for Humira®. If the result is positive, patients may participate in the study if further work up (according to local practice/guidelines) establishes conclusively that the patient has no evidence of active TB. If presence of latent TB is established, then treatment should have been initiated and maintained according to local country guidelines.
* Any documented active or suspected malignancy or history of malignancy within 5 years prior to screening, except appropriately treated basal cell or squamous cell carcinoma of the skin or in situ carcinoma of uterine cervix.
* Evidence of a current or previous disease, medical condition (including chronic alcohol or drug abuse) other than psoriasis, surgical procedure (i.e., organ transplant), medical examination finding (including vital signs and electrocardiogram \[ECG\]), or laboratory value at the Screening Visit outside the reference range that in the opinion of the investigator is clinically significant and would make the study participant unreliable to adhere to the protocol or to complete the trial, compromise the safety of the patient, or compromise the quality of the data.
* History of allergy/hypersensitivity to a systemically administered biologic agent or its excipients
* Women who are pregnant, nursing, or who plan to become pregnant while in the trial
* Previous enrolment in this trial
C: Inclusion criteria:

* Body Mass Index (BMI) \>/= 18.5 and \< 40 kg/m²
* Patients with stable moderate to severe chronic plaque-type psoriasis with or without psoriatic arthritis involving \>/= 10% body surface area, with disease severity PASI \>/= 12 and sPGA score of moderate and above (score of at least 3) at screening visit and visit 2 (randomisation), as assessed by the investigator
* Psoriasis disease duration of at least 6 months prior to screening, as assessed by the investigator
* Patients must be candidates for systemic psoriasis treatment or phototherapy, as assessed by the investigator
* Patients must be suitable candidates for ustekinumab (Stelara®) therapy as given in the local labelling
* Patient must give informed consent and sign an approved consent form prior to any study procedures in accordance with GCP and local legislation

Exclusion criteria:

* Patients with guttate, erythrodermic, or pustular psoriasis and patients with drug-induced psoriasis, as diagnosed by the investigator
* Evidence of current or previous clinically significant disease, medical condition other than psoriasis, or finding of the medical examination (including vital signs and ECG), that in the opinion of the investigator, would compromise the safety of the patient or the quality of the data. This criterion provides an opportunity for the investigator to exclude patients based on clinical judgment, even if other eligibility criteria are satisfied. (Psoriatic arthritis is not considered an exclusion criterion)
* Gastrointestinal, hepatic, renal, respiratory, cardiovascular, metabolic, immunological or hormonal disorders, diseases of the central nervous system (such as epilepsy) or psychiatric disorders or neurological disorders, or history of orthostatic hypotension, fainting spells or blackouts, that in the investigator's judgement, could jeopardize the safe conduct of the study.
* Clinically important acute or chronic infections including hepatitis and HIV.

With regards to tuberculosis the following applies:

Have signs or symptoms suggestive of current active or latent TB upon medical history, physical examination and/or a chest radiograph (both posterior-anterior and lateral views, taken within 3 months prior to the first administration of study drug and read by a qualified radiologist).

Have history of latent or active TB prior to screening, except for patients who have documentation of having completed an adequate treatment regimen at least 6 months prior to the first administration of study agent.

Have positive IGRA testing (QuantiFERON-TB Gold) within 2 months prior to or during screening, in which active TB has not been ruled out, except for patients with history of latent TB and documentation of having completed an adequate treatment regimen at least 6 months prior to the first administration of study agent.

* Have had a live vaccination \</= 12 weeks prior to randomisation (visit 2). Patients must agree not to receive a live vaccination during the study. No BCG vaccines should be given for one year prior to randomisation (visit 2), during the study and for one year after last administration of study drug (according to the Stelara® SPC).
* History of clinically significant hypersensitivity to a systemically administered biologic agent or its excipients
* History of malignancy in the past 5 years or suspicion of active malignant disease except treated cutaneous squamous cell or basal cell carcinoma
* Has received any therapeutic agent directly targeted to IL-12, IL-23 (including ustekinumab (Stelara®))
* Use of biologic agents within 12 weeks (infliximab, etanercept, adalimumab, other biologics) prior to treatment, systemic anti-psoriatic medications or phototherapy within 4 weeks prior to treatment, or topical anti-psoriasis medications within 2 weeks prior to treatment
D: Inclusion Criteria Common to Both Part A:

* Participant must have active plaque psoriasis covering at least 10% body surface area and a PASI score of at least 12 at screening and at randomization.
* Participant is a candidate for systemic therapy
* Participant has a Static Physician's Global Assessment (sPGA) score of at least 3 at screening and at randomization

Inclusion Criterion Specific to Part B

* Participant has completed the treatment period for part A (at least through week 20)

Inclusion Criterion Specific to Part C

* Participant has completed the treatment period for part B

Exclusion Criteria Common to Part A, B and C:

* Participant has pustular, erythrodermic and/or guttate forms of psoriasis
* Participant has had a clinically significant flare of psoriasis during the 12 weeks prior to study entry
* Participant has recently used any biologic agent/monoclonal antibody within the following washout periods: etanercept \>28 days, infliximab or adalimumab \>56 days, alefacept \>60 days, ustekinumab \>8 months, or any other biologic agent/monoclonal antibody \>5 half-lives prior to baseline
* Participant has received systemic psoriasis therapy (such as psoralen and ultraviolet A \[PUVA\] light therapy, cyclosporine, corticosteroids, methotrexate, oral retinoids, mycophenolate mofetil, thioguanine, hydroxyurea, sirolimus, azathioprine) or phototherapy (including ultraviolet B or self-treatment with tanning beds) within the previous 4 weeks; or had topical psoriasis treatment within the previous 2 weeks prior to randomization (exception: class 6 \[mild, such as desonide\] or 7 \[least potent, such as hydrocortisone\] topical steroids will be permitted for use limited to the face, axilla, and/or genitalia)
* Participant has donated more than 500 mL of blood within the last month
* Participant has another serious disorder or illness
* Participant has suffered a serious bacterial infection (for example, pneumonia, and cellulitis) within the last 3 months
* Participant has a history of uncontrolled high blood pressure
* Participant has clinical laboratory test results at entry that are outside the normal reference range
* Participant is currently participating in or were discontinued within the last 30 days from another clinical trial involving an investigational drug
* Participant is a woman who is lactating or breast feeding
* If a participant is a woman and could become pregnant during this study, she must talk to the study doctor about the birth control that you will use to avoid getting pregnant during the study
* If a participant is post menopausal woman, she must be at least 45 years of age and have not menstruated for the last 12 months
* If a participant is a woman between 40-45 years of age, test negative for pregnancy, and have not menstruated during the last 12 months only, she must have an additional blood test to see if you can participate
* If the participant is male, he must agree to reduce the risk of female partner becoming pregnant during the study

Exclusion Criteria Specific to B:

* If a participant experienced a serious adverse event during Part A considered possibly related to ixekizumab
* If a participant experienced an adverse event during Part A that the study doctor believes continued ixekizumab treatment could cause harm to the participant.

Exclusion Criteria Specific to C:

* If a participant experienced a Serious Adverse Event during Part B considered possibly related to ixekizumab
* If a participant experienced an adverse event during Part B that the study doctor believes continued ixekizumab treatment could cause harm to the participant.

Answer: D