Trial of Revumenib Plus FLA Chemotherapy for Children With Relapsed or Refractory NUP98-rearranged AML."

The goal of this clinical trial is to learn if Revumenib in combination with Fludarabine and Cytarabine can treat children with NUP98-rearranged relapsed or refractory Acute Myeloid Leukemia. The main question it aims to answer is: What is the Best Overall Response Rate by morphologic response criteria after up to two cycles of revumenib in combination with fludarabine and cytarabine (FLA) chemotherapy? Participants will receive up to two cycles of Revumenib in combination with fludarabine and cytarabine with intrathecal triple therapy. Participant may also receive a stem cell transplant followed by Revumenib monotherapy if it is necessary. Up to 27 children and young adults will be enrolled.