AC-4-130 (E6670-GRP)

AC-4–130 is a potent, selective inhibitor of the STAT5 SH2 domain that directly binds to STAT5, blocking its phosphorylation, dimerization, and nuclear translocation. It acts by disrupting STAT5-dependent gene transcription, effectively reducing pathological STAT5 activity in acute myeloid leukemia (AML).