[Efficacy of three prognostic scoring systems on evaluating the prognosis for patients with chronic myeloid leukemia].

OBJECTIVE: To retrospectively analyze the efficacy of three prognostic scoring systems on evaluating the prognosis for patients with chronic myeloid leukemia (CML) in chronic phase (CP).
METHODS: In this retrospective cohort study, we collected 234 patients with CML in CP, who were treated with imatinib mesylate (IM). Patients were stratified into low-, intermediate- and high- risk groups according to three scoring systems (Sokal, Hasford and EUTOS), respectively. We compared the agreement of overall survival (OS), progression free survival (PFS), event free survival (EFS) in CML patients stratified by three prognostic scoring systems. The median for follow-up was 20.5 months.
RESULTS: EUTOS scoring system: In the low- and high-risk groups, the 5-year OS was 94.6% and 84.7% (P=0.011), 5-year EFS was 92.6% and 77.6% (P=0.001), and 5-year PFS was 95.3% and 82.4% (P=0.001), respectively. While stratified by Sokal or Hasford scoring system, there was no significant the correlation between low-, intermediate- and high- risk groups with the prognosis for CML patients (P>0.05). Compared with Sokal and Hasford scoring system, the outcome of EUTOS prognostic scoring system showed highly accordance with 5-year expect OS, PFS and EFS of CML patients.
CONCLUSION: EUTOS scoring system could predict the long-time outcome of CML-CP patients better than Sokal and Hasford scoring system. Chang of treatment may affect the prognostic value of EUTOS scoring system.