Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Phase 2, Randomized, Open-Label Active-Comparator (Epoetin Alfa) Dose-Ranging Safety and Exploratory Efficacy Study of FG-4592 in Subjects With End-Stage Renal Disease Receiving Maintenance Hemodialysis (HD)
Brief Summary: The purpose of this study is to evaluate the efficacy and safety of FG-4592 in maintaining and/or correcting hemoglobin (Hb) given to subjects with End Stage Renal Disease (ESRD) on maintenance hemodialysis and receiving epoetin alfa.


Options:
A: Inclusion Criteria:

1. Subject has voluntarily signed and dated an informed consent form
2. Age 18 to 75 years
3. End-stage renal disease (ESRD) and receiving maintenance hemodialysis TIW for ≥4 months prior to Day 1
4. Hemoglobin (Hb) values in 4 screening visits and the mean Hb must be between 9.0 and 12.0 g/dL (inclusive), and the difference between them must be ≤1.5 g/dL.
5. Stable doses of IV or Subcutaneous injection of epoetin alfa, defined as follows:

   * Epoetin alfa dose range for 6 weeks prior to Day -7:

     3000 to 20,000 IU/week
   * Stable doses of epoetin alfa (i.e., the maximum epoetin alfa dose does not exceed 130% of the lowest dose of epoetin alfa taken in this period)
6. Complete Blood Count (CBC), Hematology, liver function blood tests within acceptable limits
7. Serum folate and vitamin B12 levels above the lower limit of normal (LLN)
8. Body weight: 40 to 100 kg (dry weight) inclusive
9. Body mass index (BMI): 16 to 38 kg/m2 inclusive
10. HD subjects: dialysis vascular access via native arteriovenous fistula or synthetic graft (not via catheter)

Exclusion Criteria:

1. Anticipated change in hemodialysis prescription or access during the screening or dosing period of the study
2. Any clinically significant infection or evidence of an underlying infection such as a white blood cell count (WBC) \> ULN during screening on two separate occasions,
3. Positive for any of the following: human immunodeficiency virus (HIV); hepatitis B surface antigen (HBsAg); anti-hepatitis C virus antibody (anti-HCV Ab)
4. History of chronic liver disease
5. New York Heart Association Class III or IV congestive heart failure
6. Chronic inflammatory disease other than glomerulonephritis that could impact erythropoiesis (e.g., systemic lupus erythematosis, rheumatoid arthritis, celiac disease) even if it is currently in remission
7. Active or chronic gastrointestinal bleeding, or a known coagulation disorder
8. Hemoglobinopathy (e.g., homozygous sickle-cell disease, thalassemia of all types, etc.)
9. Hematological disorders, including myelodysplastic syndrome, multiple myeloma, or pure red cell aplasia
10. History of hemosiderosis, hemochromatosis, polycystic kidney disease, or anephric
11. Active hemolysis or diagnosis of hemolytic syndrome
12. Known bone marrow fibrosis
13. Uncontrolled or symptomatic secondary hyperparathyroidism (PTH\>600ng/L)
14. Any prior organ transplantation
15. Drug-treated gastroparesis, short-bowel syndrome, or any other gastrointestinal condition that may lead to reduced absorption of study drug
16. History of alcohol or drug abuse; or a positive drug screen for a substance that has not been prescribed for the subject
17. Prior treatment with FG-4592
18. Use of traditional Chinese medicines (TCM) during the screening visit to Day 1 or plans to use TCM during the study unless approved in advance by the Medical Monitor
B: Inclusion Criteria:

1. Current clinical diagnosis of anemia due to CKD, baseline hemoglobin concentrations must be 7.0-10.0 g/dL (both inclusive) before the enrollment.
2. Ability to understand and give informed consent for participation.
3. Male or female patients diagnosed with CKD (stage III to V, not receiving dialysis) defined by estimated glomerular filtration rate (eGFR) using the CKD Epidemiology Collaboration (CKD-EPI) formula.
4. Male or female, 18 to 80 years of age.
5. Body weight \> 40 kg.
6. Subjects not on dialysis and not expected to start dialysis during the study period.
7. Patients must not be treated with erythropoiesis-stimulating agent (ESA) therapy within 6 weeks prior to enrollment.
8. Estimated GFR ≥10 mL/min/1.73 m2.
9. Serum ferritin ≥100 ng/mL and/or Transferrin Saturation \>20%.
10. No iron, folate or Vitamin B12 deficiency.
11. Females of childbearing potential, must agree to use one of the approved contraception methods, from screening until completion of the follow-up visit.

Exclusion Criteria:

1. Prior chronic hemodialysis or chronic peritoneal dialysis treatment.
2. Intravenous iron within 14 days prior to enrollment.
3. Prior exposure of rhEPO analogues less than 04 weeks.
4. Red blood cell transfusion within 8 weeks prior to enrollment.
5. History of previous or concurrent cancer.
6. Serologic status reflecting active hepatitis B or C infection or Human immunodeficiency virus (HIV) infection.
7. Active infection prior to enrollment.
8. History of renal transplant.
9. Major surgery within 90 days of the first day of study drug dosing, and minor surgery within 30 days of the first day of study drug dosing.
10. Unable to swallow tablets or disease significantly affecting gastrointestinal function and/or inhibiting small intestine absorption such as; mal-absorption syndrome, resection of the small bowel or poorly controlled inflammatory bowel disease affecting the small intestine.
11. History of uncontrolled autoimmune hemolytic anemia, idiopathic thrombocytopenic purpura (ITP) or thalassemia.
12. Presence or a history of bleeding disorders or clinical conditions (e.g. gastrointestinal \[GI\] bleeding or constitutional disorders) that may increase risk of life-threatening bleeding.
13. History of stroke or intracranial hemorrhage within 6 months prior to enrollment.
14. History of severe allergic or hypersensitivity to investigational products and its excipients.
15. Requires or is receiving anticoagulation with warfarin or equivalent vitamin K antagonists or other medications within 28 days of the first dose of study drug that in the investigator's opinion, could compromise patient safety.
16. Pregnant and breastfeeding women.
17. Current life-threatening illness, medical condition or organ system dysfunction which, in the Investigator's opinion, could compromise the patient's safety.
18. Other laboratory abnormalities that, in the opinion of the investigator, would compromise the patient's safety or interfere with data interpretation.
19. Presence of other systemic disorders or diseases (e.g., respiratory, gastrointestinal, endocrine, immunological, dermatological, neurological, psychiatric disease or any other body system involvement) which, in the Investigator's opinion, could compromise the patient's safety.
20. History of significant alcoholism or drug abuse within the past 1 year. History or presence of significant smoking (more than 10 cigarettes per day) or consumption of tobacco/nicotine products (more than 10 times per day).
21. History of difficulty with donating blood.
22. History or presence of any clinically significant ECG abnormalities during screening.
23. Participants who have participated in any drug research study other than the present trial within past 3 months.
24. Participants who have donated one unit (350 ml) of blood in the past 3 months or history of whole blood transfusion in last 120 days prior to enrollment.
25. History of chronic inflammatory disease (RA, Celiac disease, UC, Crohns disease, Systemic Lupus Erythematosus \[SLE\]).
26. In case of Diabetes mellitus patients, glycosylated haemoglobin (HbA1c) \>9 %.
C: Inclusion Criteria:

* Subject with end-stage kidney disease (ESKD) on dialysis (including, hemodiafiltration, hemodialysis, and other modalities except for peritoneal dialysis) weekly or more than weekly
* Body weight \> 40 and ≤ 160 kg at screening
* Male or female subject ≥ 20 years of age at screening
* At least one kidney
* Not treated with ESAs and/or HIF-PH inhibitors within 8 weeks prior to randomization. However, in case of the patient washed out from ESAs, when the mean Hb (at least 2 central laboratory measurements must be taken ≥ 2 days apart before dialysis) has decrease to ≥ 0.5 dL from the Hb level (central laboratory measurement, before dialysis) after the last ESA administration, AND the interval from the last ESA administration to the study drug assignment was over 1 week for epoetin-alpha, 2 weeks for darbepoetin alpha or 4 weeks for epoetin beta pegol
* Mean of the last 2 Hb level (central laboratory measurement, before dialysis) during the screening period must be ≥ 8.0 and \< 10.0 g/dL (2 measurements must be taken ≥ 2 days apart and the difference between the 2 measurements must be \< 1.2 g/dL) with the last screening Hb measurement within 14 days prior to study drug assignment
* Ferritin ≥ 50 ng/mL at screening

Exclusion Criteria:

* New York Heart Association (NYHA) Class III or IV congestive heart failure
* History of cardio- (cerebro-) vascular events (e.g., unstable angina, myocardial infarction, stroke, pulmonary thromboembolism, and acute limb ischemia) within 6 months prior to randomization
* Sustained and poorly controlled arterial hypertension (defined as systolic BP≥ 180mmHg or diastolic BP ≥ 110mmHg) or hypotension (defined as systolic BP \< 90mmHg) at randomization
* Proliferative choroidal or retinal disease, such as neovascular age-related macular degeneration or proliferative diabetic retinopathy requiring invasive treatment (e.g., intraocular injections or laser photocoagulation)
D: Inclusion Criteria:

* ≥18 years of age
* Diagnosis of chronic kidney disease (CKD) with an estimated glomerular filtration rate ≤60 milliliters per minute per 1.73 square meter (mL/min/1.73 m\^2) at Screening and not expected to start dialysis within 6 months of Screening
* Mean Screening hemoglobin \<10.0 grams per deciliter (g/dL)
* Serum ferritin ≥100 nanograms per milliliter (ng/mL) and transferrin saturation (TSAT) ≥20% during Screening

Exclusion Criteria:

* Anemia due to a cause other than CKD or participants with active bleeding or recent blood loss
* Red blood cell transfusion within 8 weeks prior to randomization.
* Any erythropoietic stimulating agent within 8 weeks prior to randomization
* Uncontrolled hypertension
* Severe heart failure at Screening (New York Heart Association Class IV)
* Acute coronary syndrome (hospitalization for unstable angina or myocardial infarction), surgical or percutaneous intervention for coronary, cerebrovascular, or peripheral artery disease (aortic or lower extremity), surgical or percutaneous valvular replacement or repair, sustained ventricular tachycardia, hospitalization for heart failure, or stroke within 12 weeks prior to or during Screening
* Hypersensitivity to Darbepoetin or Vadadustat or to any of their excipients

Answer: A