RecruitingPhase 3Drug trialIvosidenib and Azacitidine With or Without Venetoclax in Adult Patients With Newly Diagnosed IDH1-Mutated AML or MDS/AML Considered Ineligible for Intensive ChemotherapyThe standard treatment for patients with acute myeloid leukemia (AML) with an abnormality in the IDH1 gene, who are not eligible for intensive chemotherapy, is a combination of ivosidenib and azacitidine. In this study it is investigated whether adding venetoclax to the standard treatment can improve the outcome of the treatment of this specific form of AML. The safety is investigated and how well it works. In order to properly assess the value of venetoclax, the effect of venetoclax is compared with the effect of a placebo. A placebo is a product without an active ingredient, a 'fake medicinal product'.