Chronic myelogenous leukemia natural history
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
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Overview
Prognosis
In one analysis of several clinical studies, three different risk groups were identified based on a prognostic scoring system that includes several variables: age, spleen size, blast count, platelet count, eosinophil count and basophil count. In the lowest risk group, the median survival time was 98 months. In the middle group, the median was 65 months, and in the highest risk group, the median was about 42 months. Of all patients analyzed, the longest survival time was 117 months.[1] However, this study pre-dates the advent of treatments using targetted therapy. A follow-up on patients using imatinib published in the New England Journal of Medicine shows an overall survival rate of 89% after five years.[2]
The prognosis (chance of recovery) and treatment options depend on the following:
- The patient’s age.
- The phase of CML.
- The amount of blasts in the blood or bone marrow.
- The size of the spleen at diagnosis.
- The patient’s general health.
5-Year Survival
- Between 2004 and 2010, the 5-year relative survival of patients with CML was 59.9%.[3]
- When stratified by age, the 5-year relative survival of patients with CML was 80.2% and 37.1% for patients <65 and ≥ 65 years of age respectively.[3]
References
- ↑ Hasford J, Pfirrmann M, Hehlmann R, Allan NC, Baccarani M, Kluin-Nelemans JC, Alimena G, Steegmann JL, Ansari H (1998). "A new prognostic score for survival of patients with chronic myeloid leukemia treated with interferon alfa. Writing Committee for the Collaborative CML Prognostic Factors Project Group". Journal of the National Cancer Institute. 90 (11): 850–858. PMID 9625174.
- ↑ Druker BJ, Guilhot F, O'Brien SG; et al. (2006). "Five-Year Follow-up of Patients Receiving Imatinib for Chronic Myeloid Leukemia". 355 (20): 2408–2417. doi:10.1056/NEJMoa062867. PMID 17151364.
- ↑ 3.0 3.1 Howlader N, Noone AM, Krapcho M, Garshell J, Miller D, Altekruse SF, Kosary CL, Yu M, Ruhl J, Tatalovich Z,Mariotto A, Lewis DR, Chen HS, Feuer EJ, Cronin KA (eds). SEER Cancer Statistics Review, 1975-2011, National Cancer Institute. Bethesda, MD, http://seer.cancer.gov/csr/1975_2011/, based on November 2013 SEER data submission, posted to the SEER web site, April 2014.