A Complex Ph1Translocation in a Patient with Primary Thrombocythaemia

Abstract
Routine blood examination of a 27 yr old [human] female revealed a platelet count of 2000 .times. 109[cells]/l. Bone marrow cells showed the Philadelphia chromosome which was 1 product of a complex rearrangement of chromosomes 9, 22 and X. Her platelet count was lowered by plateletphoresis and chemotherapy [nitrogen mustard, busulphan]. She remains in good health 19 mo. later, but her thrombocythemia is considered to be an early manifestation of chronic myeloid leukemia.