New chromosomal alterations in a series of 23 splenic marginal zone lymphoma patients revealed by Spectral Karyotyping (SKY)

Splenic marginal zone lymphoma (SMZL) is a B-cell lymphoproliferative disorder with characteristic clinical, immunophenotypic, cytological and histological features. Some karyotypic abnormalities have been related to this disorder and most of them are usually complex and difficult to define. The aim of present study was to characterize new chromosomal aberrations involved in this disease. We performed conventional banding cytogenetics and Spectral Karyotyping (SKY) technique in 23 patients diagnosed with SMZL having a complex karyotype among a series of 160 SMZL cases. Del(7)(q22-q32) and trisomy 3/3q were the most common chromosomal aberrations. In addition, new translocations involving chromosomes 3, 6, 8, 9, 12 and 14q32 region were detected.