Currently, several RARA, RARB, or RARG fusions have been reported with at least 17 alternative partner genes in patients with APL, including PLZF, NPM1, NUMA, STAT5B, PRKAR1A, BCOR, FIP1L1, OBFC2A, GTF2I, TBLR1, IRF2BP2, NUP98, FNDC3B, PML, STAT3, CPSF6, and so forth [140] (Figure 3). Here, RARB is linked to acute promyelocytic leukemia.