Abstract

INTRODUCTION

BCR/ABL-negative myeloproliferative neoplasms are characterized by over-production myeloid lineages in the bone marrow. Polycythemia vera, essential thrombocythemia and primary myelofibrosis are the most common myeloproliferative neoplasms. The aim of this study was to analyse patient demographic characteristics, laboratory findings, mutational status together with complications, clinical course and survival.

METHODS

This study was conducted on patients diagnosed with myeloproliferative neoplasms between 2008 and 2019. Blood parameters, demographic information, mutation analysis, management, complications and follow-up periods were recorded. Survival rates were calculated and the effect of the parameters on overall survival was analyzed.

RESULTS

Evaluation was made of 247 patients, comprising 105 polycythemia vera, 126 essential thrombocythemia and 16 primary myelofibrosis patients. During follow-up, 11 polycythemia vera, 14 essential thrombocythemia and 2 primary myelofibrosis patients developed thromboembolic complications. Median overall survival could not be reached in polycythemia vera and essential thrombocythemia patient and determined as 70.3 months in primary myelofibrosis patients. Age, LDH, ferritin and platelet/lymphocyte ratio at the time of diagnosis and thromboembolic complications were determined to have a statistically significant effect on survival in all patients. Lower survival rates were seen in the primary myelofibrosis patients although thromboembolic complications were observed at similar rates in all 3 disease subgroups.

DISCUSSION AND CONCLUSION

In addition to known risk factors such as age and thromboembolic complications, parameters such as LDH, ferritin and PLR, which may be considered to indicate disease activity and inflammation, can also be used as prognostic markers.