Kaplan-Meier plot of OS considering the influence of del(16q), β2m, t(4;14), and/or del(17p). The continuous and dashed lines indicate the absence and presence of del(16q), respectively, in combination with high (≥ 5.5 mg/L) or low (< 5.5 mg/L) β2m and the presence of t(4;14) and/or del(17p).