A high proportion of cells carrying trisomy 12 is associated with a worse outcome in patients with chronic lymphocytic leukemia.

Related Articles

A high proportion of cells carrying trisomy 12 is associated with a worse outcome in patients with chronic lymphocytic leukemia.

Hematol Oncol. 2016 Jun;34(2):84-92

Authors: González-Gascón Y Marín I, Hernández-Sánchez M, Rodríguez-Vicente AE, Sanzo C, Aventín A, Puiggros A, Collado R, Heras C, Muñoz C, Delgado J, Ortega M, González MT, Marugán I, de la Fuente I, Recio I, Bosch F, Espinet B, González M, Hernández-Rivas JM, Hernández JÁ, Grupo Español de Leucemia Linfática Crónica (GELLC), Grupo Cooperativo Español de Citogenética Hematológica (GCECGH)

Abstract
The prognosis of chronic lymphocytic leukemia (CLL) patients displaying trisomy 12 (+12) remains unclear. In this study, we analyzed the influence of the proportion of cells with +12, and other clinical and biologic factors, in time to first therapy (TTFT) and overall survival (OS), in 289 patients diagnosed with CLL carrying +12. Median OS was 129 months. One hundred seventy-four patients (60.2%) presented +12 in <60% of cells. TTFT and OS for this subgroup were longer than for the subgroup with +12 in ≥60% of cells, with a median TTFT of 49 months (CI95%, 39-58) vs 30 months (CI95%, 22-38) (P = 0.001); and a median OS of 159 months (CI95%, 119-182), vs 96 months (CI95%, 58-134) (P = 0.015). Other factors associated with a shorter TTFT were: Binet stage, B symptoms, lymphadenopathy, splenomegaly, high lymphocyte count, 11q-, high β2 microglobulin, and high LDH. In the multivariate analysis, clinical stage, +12 in ≥60% of cells, high lymphocyte count, B symptoms, and 11q- in addition, resulted of significance in predicting shorter TTFT. Significant variables for OS were: Binet stage, lymphadenopathy, splenomegaly, high LDH, high β2 microglobulin, 11q-, and CD38. In the multivariate analysis, only Binet stage, 11q-, and high β2microglobulin significantly predicted shorter OS. CLL with +12 entails a heterogeneous group with intermediate prognosis. However, a high proportion of cells carrying +12 separates a subgroup of patients with poor outcome. Copyright © 2015 John Wiley & Sons, Ltd.

PMID: 25689772 [PubMed - indexed for MEDLINE]

http://ift.tt/2kAd91y