PIN1 and acute myeloid leukemia: ATRA has a role in downregulation of pin1 (Peptidylpropyl Cis/Trans Isomerase, NIMA-Interacting 1) in acute myeloid leukaemia (AML)41. Surprisingly, pin1 physically interacts with myc and both pin1 and myc are overexpressed in multiple cancers42.