Edetate Calcium Disodium or Succimer in Treating Patients With Acute Myeloid Leukemia or Myelodysplastic Syndrome Undergoing Chemotherapy

This trial is testing whether two chelating drugs — edetate calcium disodium (EDTA) and succimer — which work by binding to and removing heavy metals from the body, can help people undergoing chemotherapy for acute myeloid leukemia (AML) or myelodysplastic syndrome (MDS, a condition where the bone marrow doesn't make enough healthy blood cells). **You may be eligible if...** - You are 18 years or older - OR you are between 1 and 17 years old and weigh at least 8 kg (with parent or guardian consent) - You have been diagnosed with AML or MDS and are undergoing chemotherapy - You or your legal representative can understand the study and voluntarily provide consent **You may NOT be eligible if...** - You weigh less than 8 kg (for pediatric patients) - You are unable to understand or consent to the study - You are pregnant or breastfeeding Talk to your doctor to see if this trial is right for you.