Fig. 1.
Relationship of the time to leukemic/myelodysplastic transformation to (A) the age at diagnosis and (B) length of treatment with hydroxyurea in patients with essential transformation. (Data from Sterkers et al.1) The coefficient of correlation is as indicated in the charts. (□) Patients with 17p−; (○) patients without 17p−; (▴) present patient with M7 transformation.