A cytogenetic abnormality that refers to the translocation of the long arm (q25) of chromosome 3 and the long arm (q34) of chromosome 5. It is associated with the development of acute myeloid leukemia arising from myelodysplastic syndrome, acute myeloid leukemia with multilineage dysplasia, and acute myeloid leukemia with myelodysplasia-related changes. [from NCI]