Fig. 1.
Overall survival according to the number of unfavorable factors.
(A) Chromosome 13 deletions (Δ13). (B) Δ13, β2m ≥ 2.5 mg/L. (C) β2m ≥ 2.5 mg/L, isotype IgA associated to β2m ≥ 2.5 mg/L. (D) Δ13, β2m ≥ 2.5 mg/L, isotype IgA associated to β2m ≥ 2.5 mg/L. O/N indicates number of deaths per number of patients. P < .0001 in all panels.