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Ivosidenib for the treatment of relapsed or refractory acute myeloid leukemia with an IDH1 mutation

ABSTRACT Introduction Management of acute myeloid leukemia (AML) remains challenging, especially for relapsed or refractory (R/R) AML patients who display poor prognosis with conventional therapies. This underlined the need for new treatments in this population. Areas covered This review will focus on ivosidenib, an oral inhibitor of mutated isocitrate dehydrogenase 1 (IDH1) enzyme. Mechanisms of IDH1 mutations and their inhibition by ivosidenib will be cover, as well as clinical efficacy and safety of ivosidenib in R/R AML. Ivosidenib has been approved by the FDA for R/R AML patients with IDH1 mutation in July 2018 and for unfit AML patients with IDH1 mutation as first line treatment in May 2019. Expert commentary Ivosidenib induces impressive response rates in R/R AML, a population of bad prognosis. Nevertheless, primary and acquired resistances to ivosidenib have been recently described, underlining importance of the ongoing clinical trials with ivosidenib in combination with standard chemotherapy, hypomethylating agents or other targeted therapies.