Genomic arrays identify high-risk chronic lymphocytic leukemia with genomic complexity: a multi-center study.

Genomic arrays identify high-risk chronic lymphocytic leukemia with genomic complexity: a multi-center study.
Haematologica. 2020 Jan 23;:
Authors: Leeksma AC, Baliakas P, Moysiadis T, Puiggros A, Plevova K, van der Kevie-Kersemaekers AM, Posthuma H, Rodriguez-Vicente AE, Tran AN, Barbany G, Mansouri L, Gunnarsson R, Parker H, van den Berg E, Bellido M, Davis Z, Wall M, Scarpelli I, Österborg A, Hansson L, Jarosova M, Ghia P, Poddighe P, Espinet B, Pospisilova S, Tam C, Ysebaert L, Nguyen-Khac F, Oscier D, Haferlach C, Schoumans J, Stevens-Kroef M, Eldering E, Stamatopoulos K, Rosenquist R, Strefford JC, Mellink C, Kater AP
Abstract
Complex karyotype (CK) identified by chromosome-banding analysis (CBA) has shown prognostic value in chronic lymphocytic leukemia (CLL). Genomic arrays offer high-resolution genome-wide detection of copy-number alterations (CNAs) and could therefore be well equipped to detect the presence of a CK. Current knowledge on genomic arrays in CLL is based on outcomes of single center studies, in which different cutoffs for CNA calling were used. To further determine the clinical utility of genomic arrays for CNA assessment in CLL diagnostics, we retrospectively analyzed 2293 arrays from 13 diagnostic laboratories according to established standards. CNAs were found outside regions captured by CLL FISH probes in 34% of patients, and several of them including gains of 8q, deletions of 9p and 18p (p<0.01) were l...

Source: Haematologica - January 22, 2020 Category: Hematology Authors: Leeksma AC, Baliakas P, Moysiadis T, Puiggros A, Plevova K, van der Kevie-Kersemaekers AM, Posthuma H, Rodriguez-Vicente AE, Tran AN, Barbany G, Mansouri L, Gunnarsson R, Parker H, van den Berg E, Bellido M, Davis Z, Wall M, Scarpelli I, Österborg A, Han Tags: Haematologica Source Type: research