A novel t(9;22;11) translocation involving 11q24 in a patient with chronic myeloid leukemia: A case report.

Variant Philadelphia chromosome translocations involving chromosomes other than 9 and 22 have been reported in 5-10% of patients with chronic myeloid leukemia (CML). As part of the three-way variant t(9;22;11) in patients with CML, 11q24 is a novel region that has not previously been investigated. A 22-year-old male exhibiting chronic phase CML developed a recurrence of the same phase subsequent to the interruption of imatinib treatment and showed the same chromosomal abnormality, t(9;22;11)(q34;q11.2;q24), that was detected at the initial diagnosis. The recurrent CML responded well to imatinib therapy. These findings suggest that the three-way variant, t(9;22;11), involving 11q24 may be associated with a good prognosis and response to imatinib. This is the first report of three-way variant involving 11q24 in a patient with CML.