Conditions: Advanced B-cell Lymphoid Malignancies
Allocation: NA | Intervention model: SINGLE_GROUP
Enrollment: 10
Healthy volunteers: no

Brief summary:
This is a Phase 0/1 open-label, non-randomized, biomarker and pharmacodynamic study in patients with advanced B-cell lymphoid malignancies, including B-cell chronic lymphocytic leukemia (CLL), small lymphocytic lymphoma (SLL), acute lymphocytic leukemia (ALL), multiple myeloma (MM), Waldenström's macroglobulinemia (WM), mantle cell lymphoma, follicular lymphoma, or diffuse large B-cell lymphoma (DLBCL) who have failed at least one prior therapy and for whom no standard curative therapy exists. Patients with advanced stage disease are those whose disease is resistant or refractory to standard chemotherapy or biological therapies.

Detailed description:
This pilot study will evaluate whether the administration of roflumilast inhibits the activity of PDE4 and results in the modulation of AKT/mTOR pathways in patients with B-cell hematologic malignancies. Peripheral blood samples will be collected for the purpose of determining the pharmacodynamics of roflumilast on PDE4 activity and on biomarkers as related to GC resistance. Samples are obtained at baseline prior to starting study treatment, on Day 8 before the administration of the Day 8 study drugs (prednisone and roflumilast), and on Day 15. If a bone marrow biopsy is also performed prior to study treatment or at any time during treatment, a sample will be sent for analysis. Normal PBMC (and bone marrow when it is obtained) will be examined for changes in key targets related to the inhibition of PDE4 and potential reversal of glucocorticoid resistance. Biomarker blood samples will be analyzed in order to characterize the pharmacodynamics of roflumilast alone and in combination with prednisone on PDE4 activity and on biomarkers, such as phospho-AKT, phosphorylation levels of mTOR targets.

Arms:
arm 1: Roflumilast 500 mcg will be administered orally daily for 21 consecutive days (a 21-day cycle).

In Cycle 1, prednisone 60 mg/m2 up to a maximum of 100 mg oral (PO) daily will be taken on Days 8 through 14 at the same time as roflumilast.

In Cycle 2 and subsequent cycles, prednisone 60 mg/m2 PO up to a maximum of 100 mg daily will be taken on Days 1 through 7 at the same time as roflumilast.

Interventions: intervention 1: Prednisone intervention 2: Roflumilast
Intervention descriptions: intervention 1: Patients may receive additional courses of treatment with prednisone (and roflumilast) at the discretion of the investigator if they did not experience unacceptable toxicity and have stable disease or objectively responding disease. intervention 2: Patients may receive additional courses of treatment with roflumilast (and prednisone) at the discretion of the investigator if they did not experience unacceptable toxicity, and have stable disease or objectively responding disease.

Protocol document: