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lüll Validation and comparison of contemporary prognostic models in primary myelofibrosis: analysis based on 334 patients from a single institution Tefferi A; Huang J; Schwager S; Li CY; Wu W; Pardanani A; Mesa RACancer 2007[May]; 109 (10): 2083-8BACKGROUND: Survival in primary myelofibrosis (PMF) is predicted by several prognostic scoring systems (PSSs); the most widely recognized is that of Dupriez. Two other PSSs, Cervantes and Mayo, were recently reported as being more useful in younger patients. The current study compares these 3 PSSs among all age groups. METHODS: The Mayo Clinic PMF database was queried to identify a consecutive series of patients in whom pretreatment bone marrow and complete blood count (CBC), obtained within 6 months of diagnosis, were available for review. RESULTS: Among 334 study patients (median age, 57 years), median survival was 70 months. Multivariable analysis of all 6 adverse prognostic factors utilized in the aforementioned PSSs (ie, hemoglobin <10 g/dL, leukocyte count <4 or >30 x 10(9)/L, constitutional symptoms, circulating blasts > or = 1%, platelet count <100 x 10(9)/L, absolute monocyte count > or = 1 x 10(9)/L) identified all but platelet count as being significant. The Mayo PSS, which is based on the 4 CBC-derived parameters (ie, hemoglobin, platelet, leukocyte, and monocyte counts), displayed a better hazard ratio profile compared with the other 2 PSSs in identifying long-lived patients as well as delineating intermediate-risk disease category. The latter effect was even more pronounced in patients younger than age 60 years. CONCLUSIONS: The Mayo PSS for survival in PMF is an objective CBC-derived prognostic model that might be superior in its performance over that of either the Dupriez and Cervantes PSSs.|Adolescent[MESH]|Adult[MESH]|Aged[MESH]|Aged, 80 and over[MESH]|Blood Cell Count[MESH]|Female[MESH]|Hemoglobins/analysis[MESH]|Humans[MESH]|Male[MESH]|Middle Aged[MESH]|Models, Statistical[MESH]|Primary Myelofibrosis/blood/*mortality[MESH]|Prognosis[MESH]|Risk Factors[MESH]|Survival Analysis[MESH]|Survival Rate[MESH] |