• Patients must have established and confirmed diagnosis of intermediate or adverse-risk AML according to the European LeukemiaNet 2022 classification criteria

• Previously untreated AML excluding hydroxyurea and all-trans retinoic acid (ATRA). ATRA would only be used for suspected AML

• Age ≥ 18 years. Because no dosing or adverse event data are currently available on the use of iadademstat in combination with venetoclax and azacitidine in patients \< 18 years of age, children are excluded from this study

• Eastern Cooperative Oncology Group (ECOG) performance status ≤ 2 (Karnofsky ≥ 60%)

• Patient is able to swallow oral medications

• Patient must have a body weight of at least 50 kg due to the use of flat doses

• Total bilirubin ≤ 1.5 x institutional upper limit of normal (ULN) OR direct bilirubin ≤ ULN for patients with total bilirubin levels \> 1.5 x ULN or ≤ 3 x ULN if patient has Gilbert's disease

• Aspartate aminotransferase (AST)(serum glutamic oxaloacetic transaminase \[SGOT\])/ alanine aminotransferase (ALT) (serum glutamic pyruvic transaminase \[SGPT\]) ≤ 3 × institutional ULN or \< 5 ULN if due to AML

• Chronic kidney disease (CKD)-epidemiology collaboration (EPI) glomerular filtration rate (GFR) ≥ 40 mL/min/1.73 m\^2

• Peripheral white blood cell (WBC) count \< 25 x 10\^9/L on day 1 prior to treatment initiation. Hydroxyurea for up to 2 weeks is allowed for cytoreduction until 24 hours prior to study treatment

• Human immunodeficiency virus (HIV)-infected patients on effective anti-retroviral therapy with undetectable viral load within 6 months are eligible for this trial

• For patients with evidence of chronic hepatitis B virus (HBV) infection, the HBV viral load must be undetectable on suppressive therapy, if indicated

• Patients with a history of hepatitis C virus (HCV) infection must have been treated and cured. For patients with HCV infection who are currently on treatment, they are eligible if they have an undetectable HCV viral load

• Patients with a prior or concurrent malignancy whose natural history or treatment does not have the potential to interfere with the safety or efficacy assessment of the investigational regimen are eligible for this trial

• Patients with known history or current symptoms of cardiac disease, or history of treatment with cardiotoxic agents, should have a clinical risk assessment of cardiac function using the New York Heart Association Functional Classification. To be eligible for this trial, patients should be class II or better. Patients with a troponin leak (i.e. elevated troponin levels at presentation without evidence of an active myocardial infarction (MI) are eligible

• The effects of iadademstat on the developing human fetus are unknown. For this reason and because LSD1 inhibitors as well as other therapeutic agents used in this trial are known to be teratogenic, females of child-bearing potential must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry, for the duration of study participation, and for 180 days after the last dose of study medication. Should a woman become pregnant or suspect she is pregnant while she or her partner is participating in this study, she should inform her treating physician immediately. Males with female partners of child-bearing potential treated or enrolled on this protocol must also agree to use adequate contraception prior to the study, for the duration of study participation, and 180 days after the last dose of study medication. Women of child-bearing potential agree not to donate or freeze egg(s) during the course of this study or within 180 days after receiving their last dose of study drug. Male patients agree not to donate sperm during the course of this study or within 180 days after receiving their last dose of study drug

• Ability to understand and the willingness to sign a written informed consent document. Legally authorized representatives may sign and give informed consent on behalf of study participants