Prognostic Subgroups in B-Cell Chronic Lymphocytic Leukemia Defined by Specific Chromosomal Abnormalities

Abstract
Specific chromosomal abnormalities have been shown to affect the overall survival of patients with acute leukemia, but the possibility that specific chromosomal defects may influence the course of B-cell chronic lymphocytic leukemia (CLL) is controversial. We assessed this possibility as follows: blood mononuclear cells from 433 patients with B-cell CLL in five European centers were cultured with B-cell mitogens, and banded metaphases were studied.