Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Phase 3, Multi-Center, Randomized, Placebo-Controlled, Double-Blind, Study of the Efficacy and Safety of Apremilast (CC-10004) in Subjects With Moderate to Severe Plaque Psoriasis of the Scalp
Brief Summary: This is a Phase 3, multicenter, randomized, placebo-controlled, double-blind study of the efficacy and safety of apremilast (CC-10004) in subjects with moderate to severe plaque psoriasis of the scalp.

Approximately 300 subjects with moderate to severe plaque psoriasis of the scalp will be randomized 2:1 to receive either apremilast 30 mg twice daily (BID) or placebo for the first 16 weeks.


Options:
A: Inclusion Criteria:

* Subject has provided informed consent prior to initiation of any study specific activities/procedures
* Male or female subject is ≥ 18 years of age at time of screening
* Subject is a candidate for systemic therapy or phototherapy in the opinion of the investigator
* Subject has moderate to severe plaque psoriasis (PsO) with involved body surface area (BSA) ≥ 10%, psoriasis area and severity index (PASI) ≥ 10 and static physician's global assessment (sPGA) ≥ 3 at screening and baseline
* Subject is currently receiving treatment with apremilast for moderate to severe plaque PsO or subject has discontinued treatment with apremilast for PsO within the past 3 months prior to screening
* Subject has failed therapy with apremilast for moderate to severe plaque PsO defined as either (1) failure to achieve adequate clinical response in the opinion of the investigator, (2) loss of adequate clinical response in the opinion of the investigator or (3) intolerability to apremilast in the opinion of the investigator
* Subject has received at least 4 weeks of apremilast treatment for moderate to severe plaque PsO (this only applies for subjects who are qualifying by failure to achieve adequate clinical response or loss of adequate clinical response, this does not apply for subjects who are qualifying by intolerability to apremilast)
* Subject has not had significant known weight increase or decrease (≥ 10%) during apremilast treatment
* Subject is \< 264 lbs at screening and baseline -Subject has a negative test for hepatitis B surface antigen, hepatitis B core antibody and hepatitis C antibody
* Subject has no known history of tuberculosis.

Exclusion Criteria:

Skin disease related

-Subject has active erythrodermic, pustular, guttate psoriasis, or medication induced psoriasis, or other skin conditions at the time of the screening visit (for example, eczema) that would interfere with evaluations of the effect of investigational product on PsO.

Other Medical Conditions

* Subject has one or more significant concurrent medical conditions per investigator judgment, including the following
* Poorly controlled diabetes
* Chronic kidney disease stage IIIb, IV, or V
* Symptomatic heart failure (New York Heart Association class II, III, or IV)
* Myocardial infarction or unstable angina pectoris within the past 12 months prior to randomization
* Uncontrolled hypertension
* Severe chronic pulmonary disease (eg, requiring oxygen therapy)
* Multiple sclerosis or any other demyelinating disease
* Liver disease
* Anemia
* Major chronic inflammatory disease or connective tissue disease other than psoriasis and/or psoriatic arthritis (for example, systemic lupus erythematosus with the exception of secondary Sjogren's syndrome)
* Subject has active malignancy, including evidence of cutaneous basal or squamous cell carcinoma or melanoma, Merkel cell carcinoma or history of cancer (other than fully resected and surgically cured cutaneous basal cell and squamous cell carcinoma) within 5 years before the first dose of investigational product.
B: Inclusion Criteria:

* 18 years or older with diagnosis for at least 12 months of moderate to severe plaque psoriasis covering at least 10% of body surface area
* A Psoriasis Area and Severity Index (PASI) score of 12 or greater
* Are considered to be candidates for systemic or light therapy
* Have no evidence of active or latent tuberculosis

Exclusion Criteria:

* Non-plaque or drug-induced forms of psoriasis
* Cannot discontinue current oral, injectible or topical therapy for psoriasis or cannot discontinue phototherapy (PUVA or UVB)
* Any uncontrolled significant medical condition
C: Inclusion Criteria:

Subjects must satisfy the following criteria to be enrolled in the study:

* Males or females, ≥ 18 years of age at the time of signing the informed consent document
* Be willing and able to adhere to the study visit schedule and other protocol requirements.
* Have a diagnosis of moderate to severe plaque psoriasis of the scalp at screening and baseline
* Must be a candidate for phototherapy and/or systemic therapy for either body or scalp psoriasis lesions.
* Have moderate to severe plaque psoriasis at screening and baseline
* Must be in good health (except for psoriasis) as judged by the Investigator, based on medical history, physical examination, 12-lead electrocardiogram (ECG), clinical laboratories, and urinalysis
* Must meet laboratory criteria
* Females of childbearing potential (FCBP)\* must have a negative pregnancy test at screening and baseline. While on investigational product (IP) and for at least 28 days after taking the last dose of investigational product, FCBP who engage in activity in which conception is possible - must use one of the approved contraceptive\*\* options described below:

Option 1: Any one of the following highly effective methods: hormonal contraception (oral, injection, implant, transdermal patch, vaginal ring); intrauterine device (IUD); tubal ligation; or partner's vasectomy; OR Option 2: Male or female condom (latex condom or nonlatex condom NOT made out of natural \[animal\] membrane \[for example, polyurethane\]; PLUS one additional barrier method: (a) diaphragm with spermicide; (b) cervical cap with spermicide; or (c) contraceptive sponge with spermicide.

\*A female of childbearing potential is a sexually mature female who 1) has not undergone a hysterectomy (the surgical removal of the uterus) or bilateral oophorectomy (the surgical removal of both ovaries) or 2) has not been postmenopausal for at least 24 consecutive months (that is, has had menses at any time during the preceding 24 consecutive months).

\*\* The female subject's chosen form of contraception must be effective by the time the female subject is randomized into the study (for example, hormonal contraception should be initiated at least 28 days before randomization).

Exclusion Criteria:

The presence of any of the following will exclude a subject from enrollment:

* Other than psoriasis, history of any clinically significant uncontrolled disease.

Any condition, including the presence of laboratory abnormalities, which would place the subject at unacceptable risk if he/she were to participate in the study.

* Pregnant or breast feeding
* Hepatitis B surface antigen positive at screening
* Anti-hepatitis C antibody positive at screening
* Active tuberculosis (TB) or a history of incompletely treated TB
* Clinically significant abnormality on 12-lead electrocardiogram (ECG) at screening
* History of positive human immunodeficiency virus (HIV), or have congenital or acquired immunodeficiency (eg, common variable immunodeficiency disease)
* Active substance abuse or a history of substance abuse within 6 months prior to signing the informed consent form.
* Bacterial infections requiring treatment with oral or injectable antibiotics, or significant viral or fungal infections, within 4 weeks of signing the informed consent form.
* Malignancy or history of malignancy, except for treated (i.e., cured) basal cell or squamous cell in situ skin carcinomas or treated (i.e., cured) cervical intraepithelial neoplasia (CIN) or carcinoma in situ of the cervix with no evidence of recurrence within 5 years of signing the informed consent.
* Prior history of suicide attempt at any time in the subject's life time prior to signing the informed consent and randomization, or major psychiatric illness requiring hospitalization within the last 3 years prior to signing the informed consent.
* Psoriasis flare/rebound within 4 weeks of signing the informed consent form or between the screening and baseline visits.
* Topical therapy within 2 weeks prior to randomization; Conventional systemic therapy for psoriasis within 4 weeks prior to randomization; Intralesional corticosteroids on the scalp within 2 weeks prior to randomization; Phototherapy treatment of body or scalp psoriasi lesions within 4 weeks prior to randomization; Biologic therapy between 12 weeks to 24 weeks prior to randomization
* Use of any investigational drug beginning 4 weeks prior to randomization, or 5 pharmacokinetic/pharmacodynamic half-lives, if known (whichever is longer)
* Prolonged sun exposure or use of tanning booths or other ultraviolet (UV) light sources
* Prior treatment with apremilast
* History of allergy or hypersensitivity to any components of the Investigational product.
D: Inclusion Criteria:

1. Subjects must be able to understand and communicate with the investigator and comply with the requirements of the study and must give a written, signed and dated informed consent before any study related activity is performed. Where relevant, a legal representative will also sign the informed consent according to local laws and regulations.
2. Subjects who complete Week 52 of study CAIN457A2304 or complete Week 40 of study CAIN457A2307
3. Subjects expected to benefit from participation in the extension study, as assessed by the subject and investigator

Exclusion Criteria:

1. A protocol deviation in the core studies which according to the investigator will prevent the meaningful analysis of the extension study for the individual subject
2. Ongoing use of prohibited psoriasis or non-psoriasis treatments. Time period from last use of prohibited treatments in the core study to first dose of study drug in this extension study.
3. Subjects expected to be exposed to an undue safety risk if participating in the trial
4. Current severe progressive or uncontrolled disease which in the judgment of the investigator renders the subject unsuitable for the trial
5. Plans for administration of live vaccines during the study period
6. Pregnant or nursing (lactating) women, where pregnancy is defined as the state of a female after conception and until the termination of gestation, confirmed by a positive hCG laboratory test (\>10 mIU/mL).

Answer: C