“…However, acquired RTs are also found in haematological malignancies with a frequency estimated at 1 in 300-400 patients. 4 In this case report, we describe the transmission of a constitutional RT from an unrelated, apparently healthy donor to a patient with AML who received an allogeneic BMT. The translocation found in the donor was most likely a constitutional abnormality, as it was not linked to any haematopoietic disease and was found as the only aberration.…”