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Department of Immunology and Virology, Saitama Cancer Center Research Institute [K. S., H. M., T. K., J. N., K. E., M. O.], and Department of Hematology Clinic [N. M.] and Department of Laboratory Medicine [Y. K.], Saitama Cancer Center Hospital, 818, Komura, Ina, Saitama 362, Japan
2 To whom requests for reprints should be addressed.
The AML1 gene on chromosome 21 was rearranged by the t(8;21) chromosomal translocation in acute myeloid leukemia (AML). Southern blot analysis of 21 AML patients with t(8;21), including three with complex translocations, t(8;V;21), demonstrated that all the breakpoints occurred at random within a single intron between two coding exons of AML1. Clustering of the breakpoints in the restricted intron suggests the formation of a unique fusion gene between the AML1 gene and a presumable counterpart gene on chromosome 8. Nucleotide sequencing of the breakpoint region revealed that the translocation event was accompanied by deletion of a short stretch of nucleotides.
1 Supported in part by a Grant-in-Aid for a Comprehensive 10-year Strategy for Cancer Control from the Ministry of Health and Welfare; a Grant-in-Aid for Creative Basic Research (Human Genome Program) from the Ministry of Education, Science, and Culture; and a grant of Special Co-ordination Funds for Promotion of Science and Technology from the Science and Technology Agency of Japan.
The costs of publication of this article were defrayed in part by the payment of page charges. This article must therefore be hereby marked advertisement in accordance with 18 U.S.C. Section 1734 solely to indicate this fact.
Received 9/10/92. Accepted 10/26/92.
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