چکیده (انگلیسی):

Objective/background: Myelodysplastic syndromes (MDSs) are a group of monoclonal
hematopoietic diseases consisting of a number of various entities. The presence of differences
in chromosomal content of cells within the same individual is known as chromosomal mosaicism.
The impact of mosaic pattern on the prognosis of MDS has been unclear. In this study,
we aimed to determine the impact of mosaic pattern on the survival of patients with MDS.
Methods: We retrospectively evaluated 119 patients diagnosed with MDS at the Trakya University
Faculty of Medicine, Department of Hematology. Giemsa–Trypsin–Giemsa banding was
used to evaluate chromosomal abnormality.
The effect of chromosomal abnormality mosaicism on overall survival and transformation to
acute leukemia was evaluated by Kaplan–Meier survival analysis.
Results: The mean age at diagnosis was 66.3 years, and the mean disease duration was
24.2 months. Chromosomal abnormality was observed in 32.5% of patients. Patients with chromosomal
abnormalities comprising at least 50% metaphases had significantly lower overall survival
than patients with abnormality comprising up to 50% of all abnormal metaphases
(p = .003). There were no differences in transformation to acute leukemia among patients with
higher and lower chromosomal mosaicism (p = .056).