A Study to Find the Maximum Tolerated Dose of the Experimental Combination of the Drugs INC424 and BKM120 in Patients With Primary or Secondary Myelofibrosis

A Phase Ib, Open-label, Multi-center, Two-arm, Dose-finding Study to Assess Safety and Efficacy of the Oral Combination or INC424 (INC424) and BKM120 in Patients With Primary Myelofibrosis (PMF), Postpolycythemia Vera-myelofibrosis (PPV-MF), or Post-essential Thrombocythemia-myelofibrosis (PET-MF)

The purpose of this phase Ib clinical trial is to evaluate the safety of the combination of INC424 and BKM120 in the myelofibrosis population and to establish the maximum tolerated dose and or the Recommended Phase II dose of the combination guided by the Bayesian dose escalation model. INC424 has shown efficacy in myelofibrosis (MF) and is approved in the US and EU for the treatment of MF. BKM120 is a PI3K inhibitor. Preclinical and early clinical experience support inhibition of the PI3K/mTOR pathway in MF as aberrant activation of the pathway has been observed in MF models and may contribute to the pathogenesis of the disease.

Inclusion Criteria:

• Diagnosed with PMF, PPV-MF or PET-MF irrespective of JAK2 mutation status
• Myelofibrosis patients requiring therapy must be classified as intermediate risk level 1 )1 or more prognostic factors defined by IWG) with at least one criteria other than age
• Must have palpable spleen of at least 5 cm from the costal margin to the point of greatest splenic profusion at Screening
• Must have active symptoms of MF (one symptom score of at least 5 or two symptom scores of at least 3 at Screening) (per MFSSF 0-10)
• PLT counts > or = 75X 10^9/L at Screening or Cycle 1 Day 1 (not with aid of transfusions

Exclusion Criteria:

• Pregnant or nursing women
• WOCBP not using highly effective methods of contraception
• Sexually active males who refuse condom use
• Previous Treatment with one of the following: PI3 K inhibitors and AKT inhibitors; JAK inhibitors that resulted in clinically significant toxicities per the Investigator;
• Patients who have had splenic irradiation within 12 months prior to Screening
• Patients with specific mood disorders
• Any history of bleeding diathesis
• Patients receiving the following treatments / medications:

EIAED within 2 wks. prior to study treatment; medication known to prolong QT interval or induce Torsades de Pointes; treatment with potent systemic systemic inhibitor or systemic inducer of CYP3A4; any use of drug that interferes with coagulation or inhibits PLT function

-current and willing candidates for a stem cell transplantation