Kaplan-Meier overall survival of patients with NDMM with del(1p32) according to the association with other HR CA. HR CAs are defined by the presence of del(17p), t(4;14), and/or gain(1q). The blue curve corresponds to patients with del(1p32) without other HR CAs, the yellow curve to patients with ≥1 CA, and the red curve to patients with ≥2 other HR CAs. P value is determined by the log-rank test comparison.