Compared to non-pPCL MM, Ras mutations, including KRAS and NRAS, were particularly common in the t(14;16), t(14;20), t(4;14), and hyperdiploid subgroups, while TP53 mutations were highest in the t(11;14) (Supplementary Fig. 3). The gene discussed is NRAS; the disease is Miyoshi myopathy.