MELBOURNE, Australia & MENLO PARK, Calif.--(BUSINESS WIRE)--ChemGenex Pharmaceuticals (ASX: CXS, NASDAQ: CXSP) notes the publication of new clinical data relevant to the development strategy for Ceflatonin® (homoharringtonine). The paper “Targeted therapy and the T315I mutation in Philadelphia-positive leukemias” by researchers Simona Soverini and colleagues at the University of Bologna, Italy (Haematologica Volume 92, pages 401-404) offers insight into the growing therapeutic challenge presented by the T315I Bcr-Abl point mutation in patients with chronic myeloid leukemia (CML). The T315I Bcr-Abl mutation is associated with the development of resistance to tyrosine kinase inhibitor drugs such as imatinib (Gleevec®).