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- Title
Additional lesions identified by genomic microarrays are associated with an inferior outcome in low‐risk chronic lymphocytic leukaemia patients.
- Authors
Rigolin, Gian Matteo; Traversa, Alice; Caputo, Viviana; Del Giudice, Ilaria; Bardi, Antonella; Saccenti, Elena; Raponi, Sara; Ilari, Caterina; Cafforio, Luciana; Giovannetti, Agnese; Pizzuti, Antonio; Guarini, Anna; Foà, Robin; Cuneo, Antonio
- Abstract
Summary: We explored the relevance of genomic microarrays (GM) in the refinement of prognosis in newly diagnosed low‐risk chronic lymphocytic leukaemia (CLL) patients as defined by isolated del(13q) or no lesions by a standard 4 probe fluorescence in situ hybridization (FISH) analysis. Compared to FISH, additional lesions were detected by GM in 27 of the 119 patients (22.7%). The concordance rate between FISH and GM was 87.4%. Discordant results between cytogenetic banding analysis (CBA) and GM were observed in 45/119 cases (37.8%) and were mainly due to the intrinsic characteristics of each technique. The presence of additional lesions by GM was associated with age > 65 years (p = 0.047), advanced Binet stage (p = 0.001), CLL‐IPI score (p < 0.001), a complex karyotype (p = 0.004) and a worse time‐to‐first treatment in multivariate analysis (p = 0.009). Additional lesions by GM were also significantly associated with a worse time‐to‐first treatment in the subset of patients with wild‐type TP53 and mutated IGHV (p = 0.025). In CLL patients with low‐risk features, the presence of additional lesions identified by GM helps to identify a subset of patients with a worse outcome that could be proposed for a risk‐adapted follow‐up and for early treatment including targeted agents within clinical trials.
- Subjects
LYMPHOCYTIC leukemia; FLUORESCENCE in situ hybridization; CHRONIC leukemia; CHRONIC lymphocytic leukemia
- Publication
British Journal of Haematology, 2023, Vol 202, Issue 5, p953
- ISSN
0007-1048
- Publication type
Article
- DOI
10.1111/bjh.18946