AML specialist Dr. Naval Daver provides an overview of the progress in the field of research, including a discussion of inhibitor therapies that have revolutionized AML therapy.
Dr. Naval Daver is an Associate Professor in the Department of Leukemia at The University of Texas MD Anderson Cancer Center. More about Dr. Daver here.
Dr. Daver, I know the field of AML research is advancing rapidly. Would you give us an overview of the current treatment types in AML?
There has been dramatic progress in the treatment of acute myeloid leukemia, especially in the last three years. We’ve had eight new drugs approved for the treatment of acute myeloid leukemia. The most progress I think that has happened so far is in the identification of particular molecular mutations and targeting those mutations with targeted therapies.
The mutations that are most important right now and have target options for FLT3 mutations, F-L-T-3, and the drugs that have been USDA-approved for this are an agent called Midostaurin, which is a first-generation FLT3 inhibitor and combination chemotherapy.
And then, more recently, another agent called Gilteritinib, as a single agent in relapse refractory FLT3 AML. The other mutational group that is also very important, and therapeutically needs to be checked, is IDH1 and IDH2. And there are now two IDH inhibitors, IDH1 inhibitor, Ivosidenib, and IDH2 inhibitor, Enasidenib, both of which have been approved by the United States FDA for relapse patients with IDH1, IDH2 mutations. So, I think it’s really critical now to check for particular molecular mutations and to appropriately add the particular targeted therapy or select the particular targeted therapy in patients who have the mutation.
The other major area of advancement, and probably, if not the most important breakthrough that has happened, is the development of a new drug called Venetoclax. This is a BCL2 inhibitor. It’s new in AML, but in fact, it has been used for many years in CLL, which is chronic lymphocytic leukemia.
And this drug, in combination with Azacitidine in the frontline setting in older patients with AML who are not good candidates for intensive induction, has shown very high response rates, almost 70 percent CR-CRi, which is more than double of the 20 to 25 percent we were getting with Azacitidine alone.
And it’s now been approved by the US FDA and, in my opinion, and many of the experts really is the new standard of care and should be used in all older patients who are not good candidates for intensive chemotherapy given both the very high response rates, as well as now mature data showing significantly improved overall survival and a good tolerability.
So, there are many other breakthroughs. But I think these targeted agents, and Venetoclax, probably are the most impactful today. And we’re focusing a number of new combinations building around this.