ASCO 2015 Highlights

Midostaurin, a multikinase inhibitor targeting FLT3 and KIT, is indicated for the treatment of patients with newly diagnosed, FLT3 mutation–positive acute myeloid leukemia (AML) in combination with standard induction and consolidation chemotherapy, based on demonstrations of superior survival outcomes versus placebo in the randomized, double-blind, phase 3 RATIFY trial. The Radius-X open-label expanded treatment protocol (ETP) was designed to provide access to midostaurin and obtain additional insights into the safety and tolerability profile of midostaurin in adult patients with newly diagnosed, FLT3 mutation–positive AML.

Enasidenib (AG-221) is a novel, small-molecule oral inhibitor of mutated IDH2 (mIDH2) proteins that is currently indicated for the treatment of adult patients with mIDH-positive relapsed or refractory (R/R) acute myeloid leukemia (AML). The phase 1 AG221-C-001 study demonstrated the clinical efficacy of enasidenib in patients with mIDH2 R/R AML. Given the limited treatment options for older patients with untreated AML, the current analysis sought to evaluate the clinical outcomes for older patients with previously untreated mIDH2 AML who received enasidenib monotherapy in the AG221-C-001 study.

Available preclinical and clinical evidence suggests that inhibition of PD-1/PD-L1 pathways increases antileukemic responses in acute myeloid leukemia (AML). Moreover, azacitidine treatment results in upregulation of PD-1 signaling, which is associated with azacitidine resistance. Based on this rationale, the current study evaluated the safety and efficacy of combination nivolumab plus azacitidine treatment in 2 patient cohorts: those with relapsed or refractory (R/R) AML with poor-risk features, and in elderly patients with untreated AML.

Atlanta, GA—A positron emission tomography (PET)-directed approach after standard chemotherapy can guide the need for consolidation radiation therapy in patients with diffuse large B-cell lymphoma (DLBCL). This approach can spare patients from further treatments, such as salvage chemotherapy and stem-cell transplant, as well as unnecessary radiation therapy, according to a study presented at ASH 2017.

Atlanta, GA—Interim results from a phase 1/2 study of the combination of brentuximab vedotin (Adcetris) and nivolumab (Opdivo) have demonstrated a high overall response rate (ORR) in patients with relapsed or refractory Hodgkin lymphoma. According to data presented at ASH 2017, 83% of patients responded to the combination, which included a 62% rate among efficacy-evaluable patients.

Atlanta, GA—Among patients with untreated follicular lymphoma, 75% achieved complete responses with the 3-drug combination of atezolizumab (Tecentriq), obinutuzumab (Gazyva), and bendamustine (Treanda), results of a small, preliminary clinical trial reported at ASH 2017 showed.

Atlanta, GA—Adding brentuximab vedotin (Adcetris) to doxorubicin, vinblastine, and dacarbazine (A+AVD) instead of the standard regimen with doxorubicin, bleomycin, vinblastine, and dacarbazine (ABVD) as frontline treatment for advanced Hodgkin lymphoma reduced the risk for disease progression, death, or the need for additional therapy by 23%, according to new data presented at ASH 2017.

Atlanta, GA—Single-agent daratum­umab (Darzalex) shows significant activity in smoldering multiple myeloma (SMM). The 12-month progression-free survival (PFS) rate with a long dosing schedule of daratumumab was 95%, and the median PFS was not yet reached in any of the 3 dosing schedules studied, announced Craig C. Hofmeister, MD, MPH, Associate Professor, Division of Hematology, the Ohio State University, Columbus, at ASH 2017.

Atlanta, GA—A maintenance regimen of lenalidomide (Revlimid) and elotuzumab (Empliciti) after autologous stem-cell transplant (ASCT) improved the quality of responses achieved with induction therapy in patients with multiple myeloma.

Atlanta, GA—Venetoclax (Venclexta) plus rituximab (Rituxan) achieved superior progression-free survival (PFS) and overall survival (OS) compared with standard-of-care bendamustine (Treanda/Bendeka) plus rituximab in patients with relapsed or refractory chronic lymphocytic leukemia (CLL). PFS improved by 81% and OS by 52% with venetoclax plus rituximab, and the depth of response was impressive—complete response and complete response with incomplete platelet recovery was 26.8%, and minimal residual disease negativity in peripheral blood was 83.5%.