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A letter to the editor is presented which discusses the prognostic role of TET2 mutations BCL2L10 methylation profiling on patients with high risk of myelodysplastic syndrome with 5-azacytidine.

A letter to the editor is presented about different genomic imbalances in low and high grade hepatitis C virus related lymphomas that is published within the issue.

Fluorescence in situ hybridization and comparative genomic hybridization characterized 6p rearrangements in eight primary and in 10 secondary myeloid disorders (including one patient with Fanconi anemia) and found different molecular lesions in each group. In primary disorders, 6p abnormalities, isolated in six patients, were highly heterogeneous with different breakpoints along the 6p arm. Reciprocal translocations were found in seven. In the 10 patients with secondary acute myeloid leukemia/myelodysplastic syndrome (AML/MDS), the short arm of chromosome 6 was involved in unbalanced translocations in 7. The other three patients showed full or partial trisomy of the 6p arm, that is, i(6)(p10) (one patient) and dup(6)(p) (two patients). In 5/7 patients with unbalanced translocations, DNA sequences were overrepresented at band 6p21 as either cryptic duplications (three patients) or cryptic low-copy gains (two patients). In the eight patients with cytogenetic or cryptic 6p gains, we identified a common overrepresented region extending for 5–6 megabases from the TNF gene to the ETV-7 gene. 6p abnormalities were isolated karyotype changes in four patients. Consequently, in secondary AML/MDS, we hypothesize that 6p gains are major pathogenetic events arising from acquired and/or congenital genomic instability.Leukemia (2006) 20, 958–964. doi:10.1038/sj.leu.2404208; published online 13 April 2006 [ABSTRACT FROM AUTHOR]

A letter to the editor is presented on fusion transcription of TPM3/PDGFRB in chronic eosinophilic leukemia.

Leukemia (2002) 16, 955–956. DOI: 10.1038/sj/leu/2402490 [ABSTRACT FROM AUTHOR]