Application segmentation of the Antibody Based Therapeutics market delineates demand across therapeutic domains. Oncology remains the dominant driver, accounting for roughly 55 % of global sales, propelled by high‑incidence cancers such as breast, lung, and hematologic malignancies and by robust pipeline activity. Autoimmune disorders, including rheumatoid arthritis and psoriasis, contribute about 20 % of revenue, reflecting sustained adoption of checkpoint‑modulating antibodies and the emergence of next‑generation Fc‑engineered formats. Infectious diseases represent an emerging niche (~15 %) where antibodies target viral (e.g., SARS‑CoV‑2) and bacterial pathogens, supported by accelerated regulatory pathways during pandemics. The residual ~10 % falls under “Other,” encompassing ophthalmology, cardiovascular, and rare‑disease indications where antibody therapeutics are gaining foothold. Collectively, these application segments define the Antibody Based Therapeutics segmentation framework, each influencing overall market size through distinct clinical need, reimbursement dynamics, and pipeline maturity.