Results suggest that the targeted ATO+ATRA therapy strategy might offer similar efficacy to the chemotherapy-based regimen. In the 154 patients who were evaluable for response, complete remission was achieved in all patients (100%) in the ATO+ATRA arm and 95 percent in the AIDA arm. EFS was observed in 97 percent in the ATO+ATRA arm, with one death and two relapses, compared to 86.7 percent in the AIDA arm, in which seven deaths and four relapses were observed. Overall survival, DFS, and CIR rates were 98.7 percent, 97 percent, and 1.6 percent, respectively, in the ATO+ATRA arm, versus 91.1 percent, 91.6 percent, and 4.3 percent, respectively, in the AIDA arm. Additionally, fewer side effects (fever, low neutrophil and platelet counts) were observed in the ATO+ATRA arm.
"This is one of the first times that we can report the success of a treatment strategy for an acute leukemia that relies solely on targeted molecular therapy," said Francesco Lo-Coco, MD, lead author and Chairman of the APL subcommittee of the Italian GIMEMA group and Professor of Hematology at University Tor Vergata in Rome, Italy. "Our results are an important step toward the further utilization of targeted therapies for other types of leukemia, as we begin to focus on improving the overall treatment experience for patients by offering new strategies that deliver the same efficacy as traditional options with considerably lower toxicity."
Dr. Lo-Coco will present this study during the Plenary Scientific Session on Sunday, December 9, at 3:45 p.m. EST at the Georgia World Congress Center in Hall B5, Level 1, Building B.
|Contact: Andrea Slesinski|
American Society of Hematology