In summary, our results show that cytogenetic findings in patients with B-CLL in Iran are consistent with other reports with the exception of higher incidence of numerical abnormalities related to chromosome 21. High frequency of these abnormalities may be considered as characteristic features of B-CLL in Iran. Acknowledgements This work was supported by grants from Tehran University of Medical Sciences and Tarbiat Modarres University Research Council. We also thank Dr. M. Moazeni for his help and technical assistance. 2 Bloomfield CB, Goldman AI, Alimena G, et al.
Chromosome abnormalities identify high risk and low risk patients with acute lymphoblastic leukemia.
A genetic study of 15 cases. Giemsa banding patterns in chronic lymphocytic leukemia. Chromosome analyses in chronic lymphocytic leukemia and related B-cell neoplasms. Chromosome analysis in chronic lymphocytic leukemia and related B-cell neoplasms. 12 Delhome-Bachy M, Bertheas MF, Vasselon C, et al.