Trisomy 11 in a patient with Ph-negative chronic myelogenous leukemia

Trisomy 11 in myelodysplastic syndrome-derived acute myeloblastic leukaemias

Here we report 3 cases of trisomy 11 observed in 1 patient with secondary acute myeloblastic leukaemia and in 2 patients with spontaneous acute myeloblastic leukaemia. In all 3 patients, the picture of overt acute leukaemia arose following a clinically established myelodysplastic syndrome. These findings, together with the previously reported occurrence of trisomy 11 in myelodysplastic syndrome and in acute myeloblastic leukaemia, suggest that this abnormality can be considered specifically associated with myelodysplastic syndrome and with the subsequent and related acute myeloblastic leukaemia.

Myelodysplastic syndrome with trisomy 11 associated with polycythemia vera

A 52-year-old male with myelodysplastic syndrome (MDS) who had a prior history of polycythemia vera is reported. Chromosome analysis revealed that the bone marrow and blood cells at the MDS phase contained trisomy of chromosome 11 as the sole cytogenetic change. Trisomy 11 is rarely found in hematologic neoplasia, and all of the reported cases with trisomy 11 were diagnosed as having nonlymphocytic neoplasia. In this report, a correlation between the chromosome change and leukemia/MDS developed in polycythemia vera is discussed.

Trisomy 11 in acute lymphoblastic leukaemia

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Is trisomy 11 another nonrandom chromosomal anomaly in acute nonlymphocytic leukemia and myelodysplastic syndromes?

Four cases with trisomy 11 as the sole chromosomal anomaly are reported, three with de novo acute nonlymphocytic leukemia (ANLL) and one with a myelodysplastic syndrome (MDS) after treatment for multiple myeloma. In reviewing the literature, we found 19 additional cases with trisomy 11 as the sole cytogenetic defect. All patients except one were reported to have ANLL or MDS. Thus, it seems that trisomy 11 is another rare but nonrandom chromosomal anomaly in ANLL and MDS. So far, no apparently characteristic clinical or cytologic signs have been found in these cases.

Trisomy 11 in chronic myelomonocytic leukemia: report of two cases and review of the literature

Two cases of chronic myelomonocytic leukemia (CMMoL) with trisomy 11 as the sole chromosome abnormality are reported. A simple trisomy 11 also has been reported in 11 patients with myeloproliferative disorders, including CMMoL and acute nonlymphocytic leukemia (ANLL) in the literature. From data on these 13 patients, leukemia with trisomy 11 may be characterized by a nonlymphoid origin and myelomonocytic features. Patients with this abnormality were mostly elderly, and often had a preleukemic phase and a short survival. We propose that trisomy 11 and nonlymphocytic leukemia with myelomonocytic features may be a new association in human neoplasia.

Trisomy 11 in myelodysplasia

A case of pancytopenia with dysplastic changes in the bone marrow with trisomy 11 (+11) as the sole karyotypic anomaly in an adult male is described. The literature on +11, both as a primary (14 cases) and secondary (55 cases) cytogenetic event in hematologic disorders, is summarized and the findings are discussed. There is the possibility that +11 is a nonrandom chromosomal anomaly in some myelodysplastic disorders.