The application dimension of the antibodies in oncology segmentation distinguishes four principal use‑cases that collectively drive market size. Solid‑tumor therapy remains dominant, accounting for roughly 55 % of revenue, as monoclonal antibodies target receptors such as HER2, EGFR, and VEGF across breast, lung, and colorectal cancers. Hematologic malignancies contribute about 30 % of sales, with agents directed at CD20, CD19, and CD38 delivering durable responses in lymphoma and multiple myeloma. Immune‑checkpoint modulation—including PD‑1/PD‑L1 and CTLA‑4 blockade—represents roughly 10 % of the market, reflecting its role in re‑activating T‑cell surveillance across multiple tumor types. Finally, combination regimens (antibody + chemotherapy, targeted small‑molecule, or radiotherapy) make up an estimated 5 % of the total, illustrating the incremental value generated when antibodies are integrated into multi‑modal protocols. These application segments are quantified in the accompanying pie‑chart, providing a clear visual of their relative weight within the overall antibodies in oncology market.