| E.1 Medical condition or disease under investigation | 
| E.1.1 | Medical condition(s) being investigated | 
| advanced polycythemia vera or essential thrombocythemia  refractory to hydroxyurea |  | 
| MedDRA Classification | 
| E.1.2 Medical condition or disease under investigation | 
| 
| E.1.2 | Version | 9.1 |  
| E.1.2 | Level | LLT |  
| E.1.2 | Classification code | 10036057 |  
| E.1.2 | Term | Polycythaemia vera |  | 
| E.1.2 Medical condition or disease under investigation | 
| 
| E.1.2 | Version | 9.1 |  
| E.1.2 | Level | LLT |  
| E.1.2 | Classification code | 10015494 |  
| E.1.2 | Term | Essential thrombocythemia |  | 
| E.1.3 | Condition being studied is a rare disease | No | 
| E.2 Objective of the trial | 
| E.2.1 | Main objective of the trial | 
| To evaluate the safety and efficacy profile of three different  treatment regimens of INCB018424 administered to two groups  of patients; those with polycythemia vera (PV) and those with  essential thrombocythemia (ET). Patients in each group will be  refractory to hydroxyurea or for whom hydroxyurea is  contraindicated. |  | 
| E.2.2 | Secondary objectives of the trial | 
| To evaluate the relationship of changes in plasma and  whole blood PD biomarkers; JAK2V617F burden in blood;  and morphological, cytogenetic, and mutational status of  the bone marrow to clinical outcome and to plasma  concentrations of INCB018424   To evaluate the quality of life (QOL) in each patient  population by specifically assessing symptoms associated  with PV and ET and by using the validated EORTC QLQC30,  and by evaluating the relationship of changes in those  measures to treatment response |  | 
| E.2.3 | Trial contains a sub-study | No | 
| E.3 | Principal inclusion criteria | 
| Must be at least 18 years of age  2. Confirmed diagnosis of polycythemia vera or essential  thrombocythemia as determined by treating physician  (Guidelines in Appendix 10 and 11)  3. Patients should have disease refractory to hydroxyurea or for  whom treatment with hydroxyurea is contraindicated as  determined by the treating physician. Disease must be assessed  within 21 days prior to treatment initiation.  or  Patients who have refused further treatment with hydroxyurea  due to side effects. These patients must have had a trial with  hydroxyurea, and the treating physician must concur that discontinuing hydroxyurea is in the best interest of the patient.  4. Eastern Cooperative Oncology Group (ECOG) performance  status of 0, 1, or 2  5. Required baseline laboratory data include:  a) Hct > 45% for PV or phlebotomy required two times in  prior six months with at least one occurrence in prior three  months  b) Platelet count ≥ 125 x 109/L for PV patients  c) Platelet count > 650 x109/L for ET patients unless receiving  treatment  d) Absolute neutrophil count (ANC) ≥ 1.2 x 109/L for both  patient groups  e) Total bilirubin ≤ 2 x institutional upper limit of normal  (ULN) for both patient groups  f) Aspartate aminotransferase (AST) and alanine  aminotransferase (ALT) ≤ 2.5 x ULN for both patient  groups  g) Serum creatinine ≤ 2 x ULN for both patient groups  6. Females will be either postmenopausal for at least 1 year with  documented follicle stimulating hormone (FSH) > 30 IU/L or  surgically sterile for at least 3 months OR females of childbearing  potential who agree to take appropriate precautions to  avoid pregnancy (with at least 99% certainty) from Screening  through Follow-up. (Note: Permitted methods which are at least  99% effective in preventing pregnancy should be  communicated to the subjects and their understanding  confirmed). For all females, the urine pregnancy test result must be negative at Screening.  Males must agree to take appropriate precautions to avoid  fathering a child (with at least 99% certainty) from Screening  through Follow-up. (Note: Permitted methods which are at  least 99% effective in preventing pregnancy should be  communicated to the subjects and their understanding  confirmed.)  7. Is able to comprehend and is willing to sign an informed  consent form, indicating that the patient is aware of the nature  of the disease and has been informed of the procedures to be  followed, the experimental nature of the therapy, alternatives,  potential benefits, side effects, risks, and discomfort.  8. Willing and able to comply with scheduled visits, treatment  plan and laboratory tests. |  | 
| E.4 | Principal exclusion criteria | 
| Females who are pregnant or are currently breastfeeding  2. Treatment with interferon alpha or anagrelide within 7 days and hydroxyurea within 1 day of starting INCB018424. All other  cytoreductive therapies for PV or ET or investigational  medications must be discontinued within 28 days of enrollment.  3. Patients diagnosed with another malignancy unless the  malignancy was cervical intraepithelial neoplasia or basal or  squamous cell skin cancer and the patient has been disease free  for > 3 years, unless approved by Sponsor.  4. Patients receiving therapy with intermediate or high dose  steroids greater than the equivalent of 10 mg prednisone per  day  5. Patients with known active hepatitis A, B, C or known  positivity for HIV  6. Uncontrolled inter-current illness or has any concurrent  condition that, in the Investigators opinion, would jeopardize  the safety of the patient or compliance with the protocol.  7. Clinically significant cardiac disease (NYHA Class III or IV)  8. Incomplete recovery from any prior surgical procedures or had surgery within 4 weeks prior to study entry  9. Presence of acute active infection requiring systemic  antimicrobials  10. Any current or planned therapy with CYP3A4 inhibitors or  inducers unless approved by the Sponsor  11. Prior treatment with any oral JAK inhibitor is not permitted  unless agreed to by both the investigator and the Sponsor. |  | 
| E.5 End points | 
| E.5.1 | Primary end point(s) | 
| Primary Endpoints for PV Patients  1. Complete, partial and overall (CR + PR) response rates will be  assessed for all PV patients treated with INCB018424.  Response will be assessed at individual time points, but to be a  confirmed response, it must be sustained for at least 2 months.  Safety and tolerability as assessed by monitoring frequency,  duration, and severity of adverse events graded using the  National Cancer Institute (NCI) Common Terminology Criteria  for Adverse Events (CTCAE) v3, and the results of laboratory,  electrocardiogram findings, vital sign measurements and  physical examinations.  Primary Endpoints for ET Patients  1. Complete, partial and overall (CR+PR) response rates will be  assessed for all ET patients treated with INCB018424.  Response will be assessed at individual time points but to be a  confirmed response it must be sustained for at least 2 months.  Safety and tolerability as assessed by monitoring frequency,  duration, and severity of adverse events graded using the  National Cancer Institute (NCI) Common Terminology Criteria  for Adverse Events (CTCAE) v3, and the results of laboratory,  electrocardiogram findings, vital sign measurements and  physical examinations. |  | 
| E.6 and E.7 Scope of the trial | 
| E.6 | Scope of the trial | 
| E.6.1 | Diagnosis | No | 
| E.6.2 | Prophylaxis | No | 
| E.6.3 | Therapy | No | 
| E.6.4 | Safety | Yes | 
| E.6.5 | Efficacy | Yes | 
| E.6.6 | Pharmacokinetic | Yes | 
| E.6.7 | Pharmacodynamic | Yes | 
| E.6.8 | Bioequivalence | No | 
| E.6.9 | Dose response | No | 
| E.6.10 | Pharmacogenetic | No | 
| E.6.11 | Pharmacogenomic | No | 
| E.6.12 | Pharmacoeconomic | No | 
| E.6.13 | Others | No | 
| E.7 | Trial type and phase | 
| E.7.1 | Human pharmacology (Phase I) | No | 
| E.7.1.1 | First administration to humans | No | 
| E.7.1.2 | Bioequivalence study | No | 
| E.7.1.3 | Other | No | 
| E.7.1.3.1 | Other trial type description |  | 
| E.7.2 | Therapeutic exploratory (Phase II) | Yes | 
| E.7.3 | Therapeutic confirmatory (Phase III) | No | 
| E.7.4 | Therapeutic use (Phase IV) | No | 
| E.8 Design of the trial | 
| E.8.1 | Controlled | No | 
| E.8.1.1 | Randomised | No | 
| E.8.1.2 | Open | No | 
| E.8.1.3 | Single blind | No | 
| E.8.1.4 | Double blind | No | 
| E.8.1.5 | Parallel group | No | 
| E.8.1.6 | Cross over | No | 
| E.8.1.7 | Other | No | 
| E.8.2 | Comparator of controlled trial | 
| E.8.2.1 | Other medicinal product(s) | Information not present in EudraCT | 
| E.8.2.2 | Placebo | Information not present in EudraCT | 
| E.8.2.3 | Other | Information not present in EudraCT | 
| E.8.3 | The trial involves single site in the Member State concerned | No | 
| E.8.4 | The trial involves multiple sites in the Member State concerned | Yes | 
| E.8.4.1 | Number of sites anticipated in Member State concerned | 4 | 
| E.8.5 | The trial involves multiple Member States | No | 
| E.8.6 Trial involving sites outside the EEA | 
| E.8.6.1 | Trial being conducted both within and outside the EEA | Yes | 
| E.8.6.2 | Trial being conducted completely outside of the EEA | Information not present in EudraCT | 
| E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |  | 
| E.8.7 | Trial has a data monitoring committee | No | 
| E.8.8 | Definition of the end of the trial and justification where it is not the last
                        visit of the last subject undergoing the trial |  | 
| E.8.9 Initial estimate of the duration of the trial | 
| E.8.9.1 | In the Member State concerned years | 2 | 
| E.8.9.1 | In the Member State concerned months | 0 | 
| E.8.9.1 | In the Member State concerned days |  | 
| E.8.9.2 | In all countries concerned by the trial years | 2 | 
| E.8.9.2 | In all countries concerned by the trial months | 0 |