Please select the eligibility criteria that correspond to the clinical trial below.
Title: Multicenter, Open-label, Active-controlled, Randomized Study to Evaluate the Efficacy and Safety of an age-and Body Weight-adjusted Rivaroxaban Regimen Compared to Standard of Care in Children With Acute Venous Thromboembolism
Brief Summary: The purpose of this study is to evaluate comparative efficacy and safety of rivaroxaban to standard of care in children with acute venous thromboembolism.


Options:
A: Inclusion criteria:

* Male or female subjects 0 to less than 18 years of age at the time of informed consent / assent
* Documented diagnosis of clinically stable VTE (e.g. DVT, PE, central line thrombosis, sinus vein thrombosis) per investigator judgment, initially treated (minimum of 5 to 7 days, but not longer than 21 days) with parenteral anticoagulation therapy, such as unfractionated heparin (UFH) or a low molecular weight heparin (LMWH).
* Clinical indication for at least 3 month of treatment with anticoagulants for the VTE episode defined under the above inclusion criterion.
* Written informed consent provided by the patient's parent or legal guardian and assent provided by the patient (if applicable) at the time of informed consent form (ICF) signature according to local regulations.

Exclusion criteria:

* Conditions associated with an increased risk of bleeding
* Renal dysfunction (eGFR \< 50 mL/min/1.73m\^2 using the Schwartz formula) or requirement for dialysis. eGFR retesting during the screening period is allowed (once).
* Active infective endocarditis
* Subjects with a heart valve prosthesis requiring anticoagulation.
* Hepatic disease:

Active liver disease, including known active hepatitis A, B or C or, Persistent alanine aminotransferase (ALT) or aspartate transaminase (AST) or alkaline phosphatase (AP) \> 3 × upper limit of normal (ULN) within 3 months of screening

* Pregnant or breast feeding females. Females who have reached menarche and are not using a medically accepted contraceptive method per local guidelines. Acceptable methods of birth control must be used in a correct and consistent manner
* Patients in stratum 3 (0 to \< 2 years) with gestational age at birth \< 37 weeks or with body weight lower than the 3rd percentile
* Anemia (hemoglobin \< 80g/L) or thrombocytopenia (platelet count \< 80 x 109/L) at screening. Transfusions during the screening period are allowed, provided that a satisfactory hemoglobin or platelet level is attained prior to visit 2
* Patients who have taken prohibited or restricted medication within one week of the first dose of study medication other than medication for prior VTE treatment and P-glycoprotein inhibitors..
* Patients who have received an investigational drug in the past 30 days prior to screening
* Patients who are allergic/sensitive to any component of the study medication including solvent
* Patients or parents/legal guardians considered unreliable to participate in the trial per investigator judgment or any condition which would present a safety hazard to the patient based on investigator judgment
* Patients or parents/legal guardians who are unwilling or unable to undergo or permit repeat of the baseline imaging tests required to confirm thrombus resolution at study day 84 (or eEOT, whichever comes first) or in whom repeating such imaging tests at these pre-specified time points may not be medically in the patient's best interest. Examples may include unwarranted radiation exposure as a result of a repeat CT scan at day 84 for a patient with an isolated case of pulmonary embolism evaluated at baseline solely by a CT scan. In such cases, the baseline radiological assessment (e.g. CT) may be supplemented with an acceptable non-radiological assessment at baseline (e.g. MRI) which could then be repeated at day 84 hence alleviating any potential unwarranted radiation exposure.
* Further exclusion criteria apply
B: Inclusion criteria:

* Acute symptomatic uni- or bilateral Deep Vein Thrombosis (DVT) of the leg involving proximal veins, and/or Pulmonary Embolism (PE)
* Male or female, being 18 years of age or older
* Written informed consent for study participation

Exclusion criteria:

* Persistent symptoms of VTE
* PE requiring urgent intervention
* Use of vena cava filter
* Contraindications to anticoagulant therapy
* Allergy to study medications
* Elevated Aspartate-aminotransferase (AST) or Alanine-aminotransferase (ALT) \> 3x Upper Limit of Normal (ULN) or known liver disease expected to have an impact on survival
* Severe renal impairment
* Patients considered unsuitable for inclusion
C: Inclusion Criteria:

* Children aged birth to \< 18 years with confirmed venous thromboembolism who receive initial treatment with therapeutic dosages of UFH (unfractionated heparin), LMWH (low molecular weight heparin) or fondaparinux and require anticoagulant therapy for at least 90 days. However, children aged birth to \< 2 years with catheter-related thrombosis require anticoagulant therapy for at least 30 days.
* For children younger than 6 months:

  * Gestational age at birth of at least 37 weeks.
  * Oral feeding/nasogastric/gastric feeding for at least 10 days.
  * Body weight ≥2600 g

Exclusion Criteria:

* Active bleeding or bleeding risk contraindicating anticoagulant therapy
* An estimated glomerular filtration rate (eGFR) \< 30 mL/min/1.73 m\*2 (in children younger than 1 year, serum creatinine results above 97.5th percentile excludes participation)
* Hepatic disease which is associated with either: coagulopathy leading to a clinically relevant bleeding risk, or ALT\> 5x upper level of normal (ULN) or total bilirubin \> 2x ULN with direct bilirubin \> 20% of the total
* Platelet count \< 50 x 109/L
* Sustained uncontrolled hypertension defined as \> 95th age percentile
* Life expectancy \< 3 months
* Concomitant use of strong inhibitors of both cytochrome P450 isoenzyme 3A4 (CYP3A4) and P-glycoprotein (P-gp), including but not limited to all human immunodeficiency virus protease inhibitors and the following azole antimycotics agents: ketoconazole, itraconazole, voriconazole, posaconazole, if used systemically
* Concomitant use of strong inducers of CYP3A4, including but not limited to rifampicin, rifabutin, phenobarbital, phenytoin and carbamazepine
* Childbearing potential without proper contraceptive measures, pregnancy or breast feeding
D: Inclusion Criteria:

* Men and women ≥ 18 years of age
* Clinical diagnosis of DVT or PE

Exclusion Criteria:

* Contraindications for enoxaparin or warfarin
* Active bleeding or high risk for serious bleeding
* Short life expectancy
* Uncontrolled high blood pressure
* Significantly impaired kidney or liver function

Answer: C