Tolomeo D, Bardini M, Venuto S, Visci G, Lonoce A, Calamo L, Cifola I, Severgnini M, Mastrodonato M, Semeraro D, Valsecchi L, Mauri M, La Starza R, Lucarelli M, Azzariti A, Serratì S, Ferrari A, Simonetti G, Martinelli G, Santoro N, Fumagalli M, Di Timoteo G, Saltarella I, Milani M, Spinelli O, Bertorello N, Cazzaniga G, Fazio G, Storlazzi CT. A novel KMT2A::AFF1-derived fusion circRNA regulates mitochondrial metabolism in t(4;11) B-cell acute lymphoblastic leukemia. Haematologica; https://doi.org/10.3324/haematol.2025.300437 [Early view].