Concomitant Medications and Comorbidities Affect Early Response in CML Patients Treated with Imatinib: A Retrospective Analysis of 340 Patients from the Polish Adult Leukemia Group (PALG) Registry

Background : It has been consistently shown that early molecular response is associated with positive long-term outcome in terms of overall survival and progression-free survival in chronic myeloid leukemia (CML) patients treated with tyrosine kinase inhibitors (TKIs). Achieving a BCR-ABL(IS) <10% at three months has thereby become an important goal of treatment. According to current European LeukemiaNet recommendations, the optimal treatment response is defined as BCR-ABL(IS) ≤ 10% at three months and BCR-ABL(IS)<1% and/or complete cytogenetic response (CCyR) at six months. Factors influencing the early response are still largely unknown.