FLJ10849, a septin family gene, fuses MLL in a novel leukemia cell line CNLBC1 derived from chronic neutrophilic leukemia in transformation with t(4;11)(q21;q23)

K. Kojima, I. Sakai, A. Hasegawa, H. Niiya, T. Azuma, Y. Matsuo, N. Fujii, M. Tanimoto, S. Fujita

Research output: Contribution to journalArticle

41 Citations (Scopus)


A t(4;11)(q21;q23) has been described in 50-70% of cases of infant acute lymphoblastic leukemia and, less frequently, in cases of pediatric and adult acute lymphoblastic leukemia and acute myeloid leukemia (AML). In t(4;11)(q21;q23) leukemias, the AF4 gene has been cloned as a fusion partner of the MLL gene. A human myeloid leukemia cell line, chronic neutrophilic leukemia (CNL)BC1, was established from a peripheral blood specimen of a patient with CNL in leukemic transformation. As with the original leukemia cells, the established line had a t(4;11)(q21;q23). We showed that the MLL gene on 11q23 was fused to the FLJ10849 gene on 4q21. The protein encoded by FLJ10849 belongs to the septin family, sharing highest homology with human SEPT6, which is one of the fusion partners of MLL in t(X;11)(q13;q23) AML. Our results suggest that FLJ10849 might define a new septin family particularly involved in the pathogenesis of 11q23-associated leukemia. The established cell line, CNLBC1, could provide a useful model for analyzing the pathogenesis of MLL-septin leukemias and chronic neutrophilic leukemia.

Original languageEnglish
Pages (from-to)998-1005
Number of pages8
Issue number5
Publication statusPublished - May 2004



  • 11q23
  • 4q21
  • Chronic neutrophilic leukemia
  • MLL
  • Septin

ASJC Scopus subject areas

  • Hematology
  • Oncology
  • Cancer Research

Cite this