Please select the eligibility criteria that correspond to the clinical trial below.
Title: A PHASE 2A, RANDOMIZED, DOUBLE-BLIND, VEHICLE-CONTROLLED STUDY, TO CHARACTERIZE THE MECHANISM OF ACTION OF CRISABOROLE OINTMENT 2%, BY EVALUATION OF EFFICACY AND CHANGES IN SKIN BIOMARKERS, IN ADULT SUBJECTS WITH MILD TO MODERATE ATOPIC DERMATITIS, WITH A 4 WEEK OPEN-LABEL EXTENSION
Brief Summary: This study is being conducted to characterize the mechanism of action of crisaborole ointment 2%, by evaluation of efficacy and changes in key skin biomarkers in atopic dermatitis (AD) lesions treated with crisaborole ointment 2% over vehicle, in subjects with mild to moderate AD. Two identified AD skin lesions for each subject will be treated for the first 15 days, one with crisaborole ointment 2% and one with vehicle, in a blinded manner, and biopsies for biomarker analysis will be performed on the lesions. Following completion of the blinded treatment period, subjects will start the 28 day open label period during which all AD affected skin lesions will be treated with crisaborole ointment 2% twice daily.


Options:
A: Inclusion Criteria:

* Male or female subjects age 2-64.
* Stable or worsening atopic dermatitis affecting 5% or greater body surface area. Face and genital areas can be included in the body surface area determination and treatment area.
* The ability and willingness to follow all study procedures, attend all scheduled visits, and successfully complete the study.
* The ability to understand and sign a written informed consent/assent form, which must be obtained prior to treatment.

Exclusion Criteria:

* Known allergy to crisaborole or to any component of the formulations.
* The use of systemic therapy for atopic dermatitis within the past 4 weeks.
* Use of prescription topical therapy for atopic dermatitis (e.g., corticosteroids or retinoids) within the past 2 weeks.
* Use of any investigational therapy within the past 4 weeks.
* Pregnant females, females who are breast feeding, or females of childbearing potential who are not practicing an acceptable method of birth control (abstinence, birth control pill/patch, barrier with spermicidal jelly, IUD, etc.), as determined by the investigator. Acceptable contraception must be used during the entire study. A pregnancy test will be performed on females of childbearing potential at baseline and at 6 month and 12 month.
* Any other condition, which, in the judgment of the investigator, would put the subject at unacceptable risk for participation in the study.
B: Inclusion Criteria:

* Confirmed diagnosis of active atopic dermatitis (AD) with at least 6 month history prior to Screening and that has been clinically stable for 1 month.
* Investigator's Static Global Assessment (ISGA) of 2 (mild) or 3 (moderate) at Baseline.
* Body surface area (BSA) covered with AD of at least 0.5% and no more than 10% at Baseline, calculation excluding face, scalp, axilla, genitals, groin area, palms, back of the hands, and soles.
* Two lesions of AD at least 3 cm x 3 cm in size and at least 5 cm apart, with identical Lesion ISGA score of greater than/equal to 3.

Exclusion Criteria:

* Clinically infected AD or requires high potency topical corticosteroids or systemic (oral/injectable) corticosteroids to manage AD.
* History of angioedema or anaphylaxis to topical products or known sensitivity to components of crisaborole ointment 2%.
* History of cancer (except squamous or basal cell carcinoma or carcinoma in situ of the skin).
* Previous treatment with any topical or systemic PDE4 inhibitor unless stopped for the reason of lack of efficacy.
C: Inclusion Criteria:

* Participants diagnosed with atopic dermatitis (AD) as defined by the Hanifin and Rajka criteria.
* Participants with a history of AD for at least 2 years.
* Participants with an Investigator's Global Assessment (IGA) score of 2 to 3 at screening and baseline.
* Participants with body surface area (BSA) of AD involvement, excluding the face and intertriginous areas, of 3% to 20% at screening and baseline.
* Participants who agree to discontinue all agents used to treat AD from screening through the final follow-up visit.

Exclusion Criteria:

* Participants with evidence of active acute or chronic infections.
* Use of topical treatments for AD (other than bland emollients) within 2 weeks of baseline.
* Systemic immunosuppressive or immunomodulating drugs (eg, oral or injectable corticosteroids, methotrexate, cyclosporine, mycophenolate mofetil, azathioprine) within 4 weeks or 5 half-lives of baseline (whichever is longer).
* Participants with other dermatologic disease besides AD whose presence or treatments could complicate the assessment of disease (eg, psoriasis).
* Participants with a history of other diseases besides dermatologic disorders (eg, other autoimmune diseases) taking treatments that could complicate assessments.
* Participants with cytopenias at screening, defined as:

  * Leukocytes \< 3.0 × 10\^9/L.
  * Neutrophils \< lower limit of normal.
  * Hemoglobin \< 10 g/dL.
  * Lymphocytes \< 0.8 × 10\^9/L
  * Platelets \< 100 × 10\^9/L.
* Participants with severely impaired liver function (Child-Pugh Class C) or end-stage renal disease (ESRD) on dialysis or at least 1 of the following:

  * Serum creatinine \> 1.5 mg/dL.
  * Alanine aminotransferase (ALT) or aspartate aminotransferase (AST) ≥ 1.5 × upper limit of normal.
* Participants taking potent systemic cytochrome P450 3A4 inhibitors or fluconazole within 2 weeks or 5 half-lives, whichever is longer, before the baseline visit (topical agents with limited systemic availability are permitted).
* Participants who have previously received Janus kinase (JAK) inhibitors, systemic or topical (e.g., ruxolitinib, tofacitinib, baricitinib, filgotinib, lestaurtinib, pacritinib).
D: Inclusion Criteria:

* Males or females 2 years and older
* Has a clinical diagnosis of Atopic Dermatitis (AD) according to the criteria of Hanifin and Rajka
* Has AD involvement ≥ 5% Treatable %BSA (excluding the scalp)
* Has an ISGA score of Mild (2) or Moderate (3) at Baseline/Day 1
* All female subjects of childbearing potential must use acceptable methods of contraception from the Screening Visit continuously until 30 days after stopping study drug

Exclusion Criteria:

* As determined by the study doctor, a medical history that may interfere with study objectives
* Unstable AD or any consistent requirement for high potency topical corticosteroids
* History of use of biologic therapy (including intravenous immunoglobulin)
* Recent or anticipated concomitant use of systemic or topical therapies that might alter the course of AD
* Recent or current participation in another research study
* Females who are breastfeeding, pregnant, or with plans to get pregnant during the participation in the study
* Participation in a previous AN2728 clinical trial

Answer: B