Application-centred market taxonomy dissects demand across four solid-tumour indications—breast, lung, pancreatic and others—each with distinct label breadth, line-of-therapy positioning and competitive intensity. Breast remains the largest revenue pocket owing to adjuvant/neoadjuvant regimens that lock in multi-cycle usage; however, growth is plateauing as CDK4/6 and ADC regimens move earlier in treatment algorithms. NSCLC represents the fastest-expanding slice, propelled by China’s 2021 provincial inclusion in EGFR-negative treatment pathways and continuing penetration of chemo-IO combinations despite immuno-oncology ascendancy. Pancreatic uptake skews toward second-line maintenance after FOLFIRINOX failure, so volumes hinge on prevalence-based incidence rather than share gains. Smaller cohorts (gastric, bladder, ovarian) collectively add single-digit contributions but serve as off-label buffers that smooth quarterly demand volatility. Taken together, this application mix explains why forecast CAGR diverges materially from paclitaxel-eluting-device markets and underlines the necessity of indication-level granularity when sizing the Nanoparticle Albumin–bound Paclitaxel market.