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

BACKGROUND: 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. METHODS: Measurement of the PGRN level in serum of adult de novo acute myeloid leukemia (AML) patients using enzyme-linked immunosorbent assay (ELISA) was performed. RESULTS: 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. CONCLUSION: Adult de novo AML patients have elevated serum PGRN levels and a high PGRN level is associated with an inferior OS.