In the July 15, 1990 issue, Meeker et all described the molecular events underlying the (5;14)(q31;q32) translocation that occurs in acute lymphocytic leukemia (ALL) of B-lineage associated with eosinophilia. Observations of specific chromosomal translocations such as the t(5;14), which are associated with hematopoetic malignancies displaying a unique biologic or clinical characteristic, are im...