Photo courtesy of Janssen
Daratumumab (Darzalex)
The Ministry of Health, Labor and Welfare in Japan has approved the use of daratumumab (DARZALEX®) in combination with lenalidomide and dexamethasone or bortezomib and dexamethasone to treat adults with relapsed or refractory multiple myeloma (MM).
Daratumumab is a human IgG1k monoclonal antibody that binds to CD38, which is highly expressed on the surface of MM cells.
The drug is being developed by Janssen Biotech, Inc. under an exclusive worldwide license from Genmab.
The approval of daratumumab is based on data from the phase 3 POLLUX and CASTOR trials.
In the POLLUX trial, researchers compared treatment with lenalidomide and dexamethasone to treatment with daratumumab, lenalidomide, and dexamethasone in patients with relapsed or refractory MM.
Patients who received daratumumab in combination had a significantly higher response rate and longer progression-free survival than patients who received the 2-drug combination.
However, treatment with daratumumab was associated with infusion-related reactions and a higher incidence of neutropenia.
Results from this trial were published in NEJM in October 2016.
In the CASTOR trial, researchers compared treatment with bortezomib and dexamethasone to treatment with daratumumab, bortezomib, and dexamethasone in patients with previously treated MM.
Patients who received the 3-drug combination had a higher response rate, longer progression-free survival, and a higher incidence of grade 3/4 adverse events than those who received the 2-drug combination.
Results from this trial were published in NEJM in August 2016.
