Clinical analysis of chromosome abnormalities in patients with chronic lymphocytic leukemia

Objective To discuss the relationship between chromosome abnormalities and disease progress and prognosis in chronic lymphocytic leukemia (CLL). Methods The karyotype of 56 patients with CLL were analyzed, and combined probe was applied to do fluorescence in situ hybridization (FISH) detection. Results Conventional cytogenetics detection found abnormal karyotype in 26 cases (46.4 %), by comparing the median overall survival (OS), the normal karyotype group (>31.9 months) and abnormal group (24.0 months) had statistically difference (χ2 = 6.60, P 0.05), the OS of patients with p53 or ATM gene abnormality was significantly shorter than that of normal patients. Compared with the patients without genetic abnormality and with 1, 2 or 3 kinds of gene abnormalities, the patients with 4 kinds of gene abnormalities had minimum median OS. According to the modified installment Rai, the OS rate of low and intermediate risk group was higher than that of low risk group (χ2 = 10.61, P< 0.05). According to the modified installment Binet stage,the OS rate of stage C was lower than that of stage B (χ2 = 6.60, P< 0.05). Conclusion The prognosis of CLL patients in same risk group is very strong heterogeneity, cytogenetics changes and biological indicator are the important prognostic factors of CLL. Key words: Leukemia, lymphocytes, chronic; Cytogenetics; Prognosis