Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Phase 3, Randomized, 3-Part Study to Investigate the Efficacy and Safety of Dupilumab in Adult and Adolescent Patients With Eosinophilic Esophagitis (EoE)
Brief Summary: The primary objectives of the study by study part are:

Part A:

To determine the treatment effect of dupilumab compared with placebo in adult and adolescent patients with EoE after 24 weeks of treatment as assessed by histological and clinical measures and to inform/confirm the final sample size determination for Part B.

Part B:

To demonstrate the efficacy of dupilumab treatment compared with placebo in adult and adolescent patients with EoE after 24 weeks of treatment as assessed by histological and clinical measures.

Part C:

To assess the safety and efficacy of dupilumab treatment in adult and adolescent patients with EoE after up to 52 weeks of treatment as assessed by histological and clinical measures.

The secondary objectives of the study are:

* To evaluate the safety, tolerability, and immunogenicity of dupilumab treatment for up to 52 weeks in adult and adolescent patients with EoE
* To explore the relationship between dupilumab concentration and responses in adult and adolescent patients with EoE, using descriptive analyses
* To evaluate the effects of dupilumab on transcriptomic signatures associated with EoE and type 2 inflammation
* To demonstrate the efficacy of dupilumab treatment compared to placebo after 24 weeks and 52 weeks of treatment in adult and adolescent patients with EoE who have previously received swallowed topical corticosteroids


Options:
A: Inclusion Criteria:

* Diagnosis of eosinophilic esophagitis

Exclusion Criteria:

* Concomitant treatment with swallowed corticosteroids. Any prior use of swallowed corticosteroids will require a 4 week washout period.
* Pregnancy (all females of child bearing potential will have urine pregnancy test done at baseline).
* Evidence of pathologic eosinophilia in other locations in the GI tract.
* Participation in another research protocol
* Reduced Renal or Hepatic Function (all subjects will have a baseline creatinine and liver function panel drawn)
B: Key Inclusion Criteria (Parts A \& B):

* A documented diagnosis of EoE by endoscopic biopsy
* Baseline endoscopic biopsies with a demonstration on central reading of intraepithelial eosinophilic infiltration
* History (by patient report) of an average of at least 2 episodes of dysphagia (with intake of solids) per week in the 4 weeks prior to screening

Key Exclusion Criteria (Parts A \& B):

* Body weight ≤40 kg
* Prior participation in a dupilumab clinical trial, or past or current treatment with dupilumab
* Initiation or change of a food-elimination diet regimen or re-introduction of a previously eliminated food group in the 6 weeks prior to screening.
* Other causes of esophageal eosinophilia or the following conditions: hypereosinophilic syndrome and eosinophilic granulomatosis with polyangiitis (Churg-Strauss syndrome)
* Active Helicobacter pylori infection
* History of achalasia, Crohn's disease, ulcerative colitis, celiac disease, and prior esophageal surgery
* Any esophageal stricture unable to be passed with a standard, diagnostic, 9 to10 mm upper endoscope or any critical esophageal stricture that requires dilation at screening
* History of bleeding disorders or esophageal varices
* Pregnant or breastfeeding women, or women planning to become pregnant or breastfeed during the study

Key Exclusion Criteria (Part C):

* Participants who, during Part A or Part B, developed a serious adverse event (SAE) and/or adverse event (AE) deemed related to study drug, which in the opinion of the investigator could indicate that continued treatment with study drug may present an unreasonable risk for the participant
* Participants who became pregnant during Part A or Part B
* Participants who are prematurely discontinued from study drug due to an AE (patients who are prematurely discontinued from study drug due to lack of efficacy are eligible to enter Part C)
* Patients who did not undergo endoscopy with biopsies prior to receiving rescue treatment

Note: Other inclusion/ exclusion criteria apply
C: Inclusion Criteria:

* Healthy volunteers:

  1. A condition of good health based upon the results of medical history, physical examination, vital signs, laboratory profile and ECG.
  2. BMI 18 to 29, inclusive.
* Mild asthma patients:

  1. Diagnosis of well-controlled, mild to moderate asthma by GINA guidelines for \> or = to 6 months
  2. A condition of good health (than mild to moderate asthma) based upon the results of medical history, physical examination, vital signs laboratory profile and EDG.
  3. BMI 18 to 34, inclusive.

Exclusion Criteria:

1. Asthma exacerbation within 8 weeks of Study Day 1.
2. Clinically significant allergic reaction to any drug, biologic, food, or vaccine.
3. History of allergic reaction or significant sensitivity to constituents of study drug.
4. Receipt of any investigational product within 30 days or 5 half-lives (whichever is longer) prior to study drug administration.
5. Subject is a smoker or has a history of smoking within the 6-month period preceding study drug administration.
6. Current enrollment in another clinical study.
D: Major Inclusion Criteria:

* Signed informed consent
* Male or female patients, 18 to 75 years of age
* Confirmed clinicopathological diagnosis of EoE according to established diagnostic criteria:

(A) Clinical symptoms of esophageal dysfunction (B) Peak eosinophils ≥ 15 in at least 1 high-power field (hpf)

- Active symptomatic and histological EoE at baseline

Major Exclusion Criteria:

* Clinically and endoscopically suspicion for gastroesophageal reflux disease, achalasia, or sklerodermia
* Gastroesophageal reflux disease and PPI-responsive esophageal eosinophilia
* Other clinical evident causes than EoE for esophageal eosinophilia
* Any concomitant esophageal disease and relevant gastro-intestinal disease (celiac disease, inflammatory bowel disease, oropharyngeal or esophageal bacterial, viral, or fungal infection)
* Any relevant systemic disease (e.g., AIDS, active tuberculosis)
* Abnormal hepatic function at screening visit, liver cirrhosis, or portal hypertension
* Abnormal renal function at screening
* History of cancer in the last five years (except for non-metastatic cancers, e.g., basalioma)
* History of esophageal surgery at any time or of esophageal dilation procedures within the last 8 weeks prior to screening visit
* Upper gastrointestinal bleeding within 8 weeks prior to screening visit
* Concomitant, or within the 4 weeks prior to screening visit, treatment with systemic therapies for any reason that may affect assessment of primary and secondary endpoints, i.e., systemic glucocorticoids, histamine antagonists, mast cell stabilizers, leukotriene receptor antagonists, biologics, or immunosuppressants
* Concomitant, or within the 2 weeks prior to screening visit, treatment with topical therapies for any reason that may affect assessment of primary and secondary endpoints, i.e., topical glucocorticoids or inhaled sodium cromoglycate
* Installation of dietary restrictions within 4 weeks prior to screening visit or during treatment
* Intake of grapefruit containing food or beverages during the treatment with study medication
* Known intolerance/hypersensitivity to study drug
* Existing or intended pregnancy or breast-feeding

Answer: B