The clinical features and prognostic implications of PTPN11 mutation in adult patients with acute myeloid leukemia in China

Abstract

Abstract Background The clinical significance of protein tyrosine phosphatase nonreceptor type 11 mutation (PTPN11mut) in acute myeloid leukemia (AML) is underestimated. Methods We collected the data of AML patients with mutated PTPN11 and wild‐type PTPN11 (PTPN11wt) treated at our hospital and analyzed their clinical characteristics and prognosis. Results Fifty‐nine PTPN11mut and 124 PTPN11wt AML patients were included. PTPN11mut was more common in myelomonocytic and monocytic leukemia, and was more likely to co‐mutate with KRAS, KMT2C, NRAS, U2AF1, NOTCH1, IKZF1, and USH2A mutations than PTPN11wt. The overall survival for AML patients with PTPN11mut was significantly shorter than that for those with PTPN11wt (p = 0.03). The negative impact of PTPN11mut on overall survival was pronounced in the “favorable” and “intermediate” groups of ELN2017 risk stratification, as well as in the wild‐type NPM1 group (p = 0.01, p = 0.01, and p = 0.04). Conclusion PTPN11mut is associated with distinct clinical and molecular characteristics, and adverse prognosis in AML patients.

Keywords

• acute myeloid leukemia
• event‐free survival
• overall survival
• PTPN11