Figure 1. Cluster analysis of different subtypes of MM based on PCD-related genes. (A) Heatmap of sample clustering in MMRF-COMPASS with a total of k = 6. (B) Relationship KM curves of OS prognosis for six molecular subtypes. (C) Differences in PCD between molecular subtypes in the MMRF-COMPASS cohort. (D) Heat map of statistically significant different PCD levels in different subtypes. (E) Clinicopathological characteristics of the six molecular subtypes in the MMRF-COMPASS training cohort. **p < 0.01, ****p < 0.0001.