A Phase 1/2, Open-Label, Dose Escalation, Safety and Tolerability Study of INCB050465 and Itacitinib in Subjects With Previously Treated B-Cell Malignancies (CITADEL-101)

Inclusion Criteria:

* Aged 18 years or older, with lymphoid malignancies of B-cell origin including:

  1. Indolent / aggressive B-cell non-Hodgkin's lymphoma (NHL)

     * EXCLUDING: Burkitt's lymphoma and precursor B lymphoblastic leukemia/lymphoma
     * INCLUDING: any non-Hodgkin's B cell malignancy such as chronic lymphocytic leukemia (CLL) and rare non-Hodgkin's B- cell subtypes such as hairy cell leukemia, Waldenström macroglobulinemia (WM), mantle cell leukemia (MCL), and transformed NHL histologies
  2. Hodgkin's lymphoma (HL)
* Life expectancy of 12 weeks or longer
* Subject must have received ≥ 1 prior treatment regimen(s)
* The subject must not be a candidate for potentially curative therapy including hematopoietic stem cell transplantation, except where one of the standard therapy regimen combinations may be used prior to transplantation per standard medical practice

Exclusion Criteria:

* Has history of brain metastasis, spinal cord compression (unless treated, asymptomatic, and stable on most recent imaging and enrolling in expansion cohort), or lymphoma involving the central nervous system (CNS)
* Has an Eastern Cooperative Oncology Group (ECOG) performance status of ≥ 3 (≥ 2 during dose escalation)
* Received allogeneic hematopoietic stem cell transplant within the last 6 months, or has active graft versus host disease (GVHD) following allogeneic transplant, or currently receiving immunosuppressive therapy following allogeneic transplant
* Received autologous hematopoietic stem cell transplant within the last 3 months
* Inadequate marrow reserve assessed by hematologic laboratory parameters
* Inadequate renal or liver function
* Known HIV infection, or hepatitis B virus (HBV) or hepatitis C virus (HCV) viremia or at risk for HBV reactivation