Prognostic value of serum progranulin in de novo adult acute myeloid leukemia patients

Elevated serum progranulin (PGRN) levels have been associated with a wide range of different human malignancies. However, data available on the role of PGRN in hematological malignancies are limited. Measurement of the PGRN level in serum of adult de novo acute myeloid leukemia (AML) patients using enzyme-linked immunosorbent assay (ELISA) was performed. The mean serum PGRN level in AML patients was higher than that in controls (346.08 pg/ml ± 64.46 vs 155 pg/ml ± 63 respectively; p = 0.001). After a mean duration of follow-up equaling 140 days, patients with high serum PGRN (i.e., higher than 370.5 pg/ml) had inferior overall survival (OS) in comparison to patients with low serum PGRN (i.e., lower than 370.5 pg/ml) (OS = 25% vs 60.7%, mean survival = 107 days vs 256.5 days, p = 0.007). On the other hand, remitted patients on day 28 with high serum PGRN (i.e., higher than 307.5 pg/ml) did not differ from those with low serum PGRN (i.e., lower than 307.5 pg/ml) regarding disease-free survival (DFS) (DFS = 78.6% vs. 87.5%, mean survival = 301.3 days vs. 283.5 days, p = 0.789). Moreover, the serum PGRN level was associated with inferior OS (p = 0.024) on multivariate analysis. Adult de novo AML patients have elevated serum PGRN levels and a high PGRN level is associated with an inferior OS.