MAb doubles ORR, PFS in rel/ref MM

Safety

Dr Dimopoulos said AEs were comparable between the treatment arms. He pointed out that neutropenia was less common with EPd compared to Pd, despite similar pomalidomide dose intensity. And exposure-adjusted hematologic AEs and infections were lower with EPd than with Pd.

Ninety-seven percent of patients in the EPd arm and 95% in the Pd arm had at least 1 AE.

Grade 3-4 nonhematologic AEs (in the EPd and Pd arms, respectively) included constipation (2% and 0%), hyperglycemia (8% and 7%), bone pain (3% and 0%), dyspnea (3% and 2%), fatigue (0% and 4%), respiratory tract infection (0% and 2%), and upper respiratory tract infection (0% and 2%).

Grade 3-4 hematologic AEs (in the EPd and Pd arms, respectively) included anemia (10% and 20%), neutropenia (13% and 27%), thrombocytopenia (8% and 5%), and lymphopenia (8% and 2%).

Grade 3-4 AEs of special interest (in the EPd and Pd arms, respectively) included infections (13% and 22%), vascular disorders (3% and 0%), cardiac disorders (7% and 4%), and neoplasms (2% and 11%).

There were 5 grade 5 AEs in the EPd arm and 8 in the Pd arm.

In the EPd arm, grade 5 AEs included infection (n=3), cardiac failure, and general physical health deterioration.

In the Pd arm, grade 5 AEs included malignant neoplasm progression (n=4), infection, multiple organ failure and infection, myocardial infarction, and plasma cell myeloma.