A der(14)t(1;14)(q12;p11) in chronic myelomonocytic leukemia.

Duplication of the long arm of chromosome 1 (1q) is widely reported in human neoplasia, including the myelodysplastic syndromes (MDS). So far, it has not been described as a single aberration in the chronic myelomonocytic leukemia (CMML), a subtype of MDS. Rather, trisomy 1q was always a part of complex chromosome changes affecting the subtypes of MDS other than CMML.

A novel t(2;17) in transformation of essential thrombocythemia to acute myelocytic leukemia.

A transformation of essential thrombocythemia to acute myelocytic leukemia (AML), myelodysplastic syndrome, or agnogenic myelocytic metaplasia is a relatively rare event. It occurs in 1%-4.5% of all patients with either treated or untreated essential thrombocythemia.