Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Randomised, Double-Blind, Active-Controlled, Two-Treatment, Crossover, Multinational, Multicentre Study to Compare Two Pancreatic Enzyme Products in the Treatment of Exocrine Pancreatic Insufficiency in Subjects With Cystic Fibrosis
Brief Summary: The purpose of the study is to further evaluate the safety and efficacy of EUR-1008 as compared to Kreon® in the treatment of exocrine pancreatic insufficiency associated with Cystic Fibrosis in subjects 12 years of age and older.


Options:
A: Inclusion Criteria:

1. Definitive diagnosis of CF based on the following:

   * One clinical feature consistent with CF and
   * Either a genotype with 2 identifiable mutations known to cause CF or a sweat chloride concentration \>60 mEq/L by pilocarpine iontophoresis
2. Pancreatic insufficiency documented by a monoclonal faecal elastase (FE) 100 μg/g stool at screening (test results within the previous 12 months are acceptable)
3. Currently receiving pancreatic enzyme replacement therapy
4. Adequate nutritional status based on the following: body mass index (BMI) \>19 kg/m2 in adult subjects or a BMI percentile 10th percentile for age in adolescent (12 to 17 years age group) subjects
5. Are clinically stable with no evidence of concomitant illness or acute upper or lower respiratory tract infection that requires antibiotics during the 7-day interval prior to screening and preceding entry into this clinical study

Exclusion Criteria:

1. Age \<12 years
2. Known contraindication, hypersensitivity, or intolerance to pork or other porcine PEPs
3. Current uncontrolled diabetes mellitus
4. History of solid organ transplantation
5. History of surgery affecting the bowel function and weight gain
B: Observational Study

Inclusion Criteria:

1. Signed informed consent
2. Males or females no more than three and one half (3.5) months of age at enrollment
3. Documentation of a CF diagnosis as evidenced by:

   1. One or more of the following: one or more clinical features consistent with the CF phenotype OR a positive newborn screening (NBS) OR a positive pre-natal screen

      AND
   2. One or more of the following: sweat chloride ≥ 60 mEq/liter by quantitative pilocarpine iontophoresis test (QPIT) OR two well-characterized mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene
4. Enrolled in the Cystic Fibrosis Foundation Patient Registry. (Patients may enroll in the Registry at Enrollment Visit if not previously enrolled.)

Exclusion Criteria:

1. Children unable to take full oral feeds
2. Any serious or active medical condition, which in the opinion of the investigator, contributes to malabsorption, interferes with normal growth, or would otherwise interfere with subject's treatment, assessment, or compliance with the protocol.
3. Gestational age less than 35 weeks and/or birth weight \< 2.5 kg.
C: Inclusion Criteria:

* Male and female patients aged ≥12 years from the date of informed consent
* Confirmed diagnosis of CF at screening
* Confirmed EPI by historical (within past 12 months) CFA \<70% without use of PERTs or current fecal elastase \<50 µg/g stool at screening
* Currently receiving PERT with a commercially available pancreatic enzyme
* Currently on stable treatment with proton pump inhibitors or H2 receptor antagonists
* Clinically stable condition without evidence of acute respiratory disease or any other acute condition

Exclusion Criteria:

* History of fibrosing colonopathy
* History of significant bowel resection, in the opinion of the investigator, or solid organ transplant
* History of being refractory to pancreatic enzyme replacement
* Current diagnosis or history of distal intestinal obstruction syndrome
* Current diagnosis of small intestinal bacterial overgrowth, ileus or acute abdomen
* A body mass index percentile \<10%
D: Inclusion Criteria:

CF cohort:

Diagnosis of CF determined by

* a sweat chloride of \>60 mEq/L and/or
* detection of 2 disease causing CFTR mutations with evidence of organ involvement.

Healthy controls:

* Age-matched

Exclusion Criteria:

CF cohort:

* Lacking ability to cooperate of patients /their families, respectively

Healthy controls:

* Other diseases causing abdominal symptoms (Inflammatory bowel disease (IBD), alpha 1 antitrypsin deficiency, celiac disease, food allergy, gastroenteritis, etc.)

Answer: A