The Treatment for Accelerated-Phase CML segmentation by application distinguishes four principal usage scenarios: first‑line therapy, second‑line therapy, combination regimens, and salvage therapy. First‑line therapy, administered immediately after diagnosis, drives the largest share of the market because it captures the majority of newly identified patients and anchors long‑term drug adoption. Second‑line therapy follows inadequate response or intolerance to initial agents, contributing a substantial secondary revenue stream as clinicians switch to alternative TKIs or add cytoreductive agents. Combination regimens, which pair TKIs with chemotherapy or novel immunotherapies, represent a growing niche driven by clinical trial evidence of synergistic efficacy, thereby expanding the overall market footprint. Finally, salvage therapy—reserved for patients refractory to multiple lines—adds a high‑value, low‑volume segment that sustains demand for next‑generation agents. Collectively, these application categories shape the revenue distribution, with each segment’s clinical prevalence directly influencing the total market size for accelerated‑phase CML treatments.